International Buffalo Information Center (IBIC) BUFFALO BULLETIN ISSN : 0125-6726 Aims IBIC is a specialized information center on water buffalo. Established in 1981 by Kasetsart University (Thailand) with an initial financial support from the International Development Research Center (IDRC) of Canada. IBIC aims at being the buffalo information center of buffalo research community through out the world. Main Objectives 1. To be world source on buffalo information 2. To provide literature search and photocopy services 3. To disseminate information in newsletter 4. To publish occasional publications such as an inventory of ongoing research projects Buffalo Bulletin is published quarterly in March, June, September and December. Contributions on any aspect of research or development, progress reports of projects and news on buffalo will be considered for publication in the bulletin. 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Publisher International Buffalo Information Center, Office of the University Library, Kasetsart University Online availible http://ibic.lib.ku.ac.th/e-Bulletin Advisory Board Prof. Dr. Charan Chantalakhana Prof. Dr. John Lindsay Falvey Prof. Dr. Metha Wanapat Mr. Antonio Borghese Dr. Aree Thunkijjanukij Miss Wanphen Srijankul Editorial Member Dr. Pakapan Skunmun Dr. Kalaya Bunyanuwat Prof. Dr. Federico Infascelli Thailand Faculty of Veterinary and Agricultural Science, University of Melbourne, Australia Department of Animal Science, Faculty of Agriculture, Khon Kaen University, Thailand International Buffalo Federation, Italy International Buffalo Information Center, Office of the University Library, Kasetsart University, Thailand International Buffalo Information Center, Office of the University Library, Kasetsart University, Thailand Thailand Department of Livestock Development, Thailand Department of Veterinary Medicine and Animal Science, University of Naples Federico II, Italy Dr. Rafat Al Jassim Prof. Dr. Nguyen Van Thu Prof. K. 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Prof. Dr. Asif Nadeem Prof. Dr. Raul Franzolin School of Agriculture and Food Sciences, Faculty of Science, The University of Queensland, Australia Department of Animal Sciences, Faculty of Agriculture and Applied Biology, Can Tho University, Vietnam Department of Livestock Production and Management, College of Veterinary Science, India Virtual University of Pakistan, Pakistan Institute of Biochemistry and Biotechnology, University of Veterinary and Animal Sciences, Pakistan Departamento de Zootecnia, Universidade de São Paulo, Brazil Editor Dr. Sunpetch Sophon Journal Manager Mr. Chalermdej Taterian Assistant Journal Manager Miss Jirawadee Wiratto Faculty of Veterinary Technology, Thailand Medicine, Mahanakorn of International Buffalo Information Center, Office of the University Library, Kasetsart University, Thailand International Buffalo Information Center, Office of the University Library, Kasetsart University, Thailand BUFFALO BULLEITN IBIC, KASETSART UNIVERSITY, P.O. BOX 1084, BANGKOK 10903, THAILAND E-mail : libibic@ku.ac.th Tel : 66-2-9428616 ext. 344 Fax : 66-2-9406688 Buffalo Bulletin (March 2015) Vol.34 No.1 CONTENTS Page Case Report An outbreak of trypanosomosis in buffaloes caused by diminazene resistant Trypanosoma evansi G. Ponnudurai, S. Sivaraman, N. Rani and C. Veerapandian.........................................................1 Original Article Evaluation of urea molasses multi-nutrient blocks containing alternate feed resources in buffaloes M. Choubey, M. Wadhwa and M.P.S. Bakshi...................................................................................5 Effect of supplementation of Tinospora cordifolia on lactation parameters in early lactating Murrah buffaloes N.A. Mir, P. Kumar, S.A. Rather, F.A. Sheikh and S.A. Wani............................................................17 Prevalence and seasonal variation in ixodid ticks on buffaloes of Mathura district, Uttar Pradesh, India Geeta Patel, Daya Shanker, Amit Kumar Jaiswal, Vikrant Sudan and Santosh Kumar Verma...............................................................................................................21 Sedative, analgesic and cardiopulmonary effects of midazolam-butorphanol premedication in water buffaloes (Bubalus bubalis) Deepti Bodh, Kiranjeet Singh, Jitender Mohindroo, Sashi Kant Mahajan and Narinder Singh Saini.................................................................................................................29 Prevalence and antibiogram of bacterial pathogens from subclinical mastitis in buffaloes Z. Ali, U. Dimri and R. Jhambh........................................................................................................41 Macro and micro mineral profile in forage and blood plasma of water buffaloes with respect to seasonal variation Sushma Chhabra, S.N.S. Randhawa and S.D. Bhardwaj.................................................................45 Buffalo Bulletin (March 2015) Vol.34 No.1 CONTENTS Page Original Article A study on the prevalence of pathological abnormalities of the ovaries and oviducts diagnosed at post mortem of buffaloes in Mosul O.I. Azawi and A.J. Ali...................................................................................................................51 Effect of vitamin E and mineral supplementation on biochemical profile and reproductive performance of buffaloes H.M. Khan, T.K. Mohanty, M. Bhakat, A.K. Gupta, A.K. Tyagi and G. Mondal...........................63 Effect of vitamin E and mineral supplementation during peri-partum period on BCS, body weight and calf performance in Murrah buffaloes H.M. Khan, T.K. Mohanty, M. Bhakat, A.K. Gupta and G. Mondal..............................................79 Study on micro-mineral status of buffaloes during peripartum period in different season H.M. Khan, T.K. Mohanty, M. Bhakat, A.K. Gupta, A.K. Tyagi and G. Mondal...........................86 Lifetime performance of Murrah buffaloes hot and humid climate of Tamil Nadu, India A.K. Thiruvenkadan, S. Panneerselvam and R. Rajendran...........................................................92 Effect of season on semen quality parameters in Murrah buffalo bulls M. Bhakat, T.K. Mohanty, A.K. Gupta, S. Prasad, A.K. Chakravarty and H.M. Khan.................100 Milk yield and composition and efficiency of nutrients for milk production in Jaffrabadi buffaloes on rations supplemented with varying levels of bypass fat H.H. Savsani, K.S. Murthy, P.U. Gajbhiye, P.H. Vataliya, A.R. Bhadaniya, V.A. Kalaria, S.N. Ghodasara and S.S. Patil.................................................................................113 Real time PCR- an approach to detect meat adulteration Rajni Kumari, D.N. Rank, Sanjay Kumar, C.G. Joshi and S.V. Lal...............................................124 The use of tropical of multiproposes trees as a feed supplement to Thai swamp buffaloes (Bubalus bubalis) reciving a basal diet of pangola hay Thongsuk Jetana, Sunworn Usawang and Sunpetch Sophon........................................................130 Case Report Buffalo Bulletin (March 2015) Vol.34 No.1 AN OUTBREAK OF TRYPANOSOMOSIS IN BUFFALOES CAUSED BY DIMINAZENE RESISTANT TRYPANOSOMA EVANSI G. Ponnudurai*, S. Sivaraman, N. Rani and C. Veerapandian ABSTRACT trypanosomosis. Consequent to this all the animals were treated with Antrycide Pro-salt as prophylactic measures. An outbreak of trypanosomosis caused by diminazine resistant Trypanosoma evansi was recorded in 6.9 percent of buffaloes in an organised government farm during the month of August’2012. A total of 144 buffaloes are being maintained at the district livestock farm, Orathanadu, Thanjavur district of Tamil Nadu. Initially, 2 animals had developed the clinical symptoms of fever (104oC), oedema of the legs, pale visible mucous Keywords: trypanosomosis, buffaloes, diminazene resistant strain, India INTRODUCTION Trypanosomosis is one of the important haemoprotozoan diseases affecting wide range of domestic and wild animals in India. Horse has been incriminated as natural host for this haemoflagellate, while cattle, buffalo and camel act as reservoir hosts and they usually exhibit subclinical form of disease. However, the reservoir hosts may also suffer with clinical trypanosomosis, if they are subject to stress. Since the disease is endemic throughout India, it causes heavy economic losses to the farmers in terms of morbidity, mortality, abortion, infertility, reduced milk yield and various neurological disorders resulting into death of the affected animals. In India, diminazene aceturate, Quinapyramine sulphate and chloride (Antrycide Prosalt) and Quinapyramine sulphate (Antrycide) are currently available drugs for treatment and prophylactic use against trypanosomosis in domestic animals. But drug resistance is now a severe and increasing problem in trypanosome (Witola et al., 2005 and Shaba et al., 2006). The present paper membrane, frequent micturition and anorexia. The examination of thin blood smear showed the presence of Trypanosoma evansi with parasitaemia level of +++. Subsequently the affected animals were first treated with diminazene aceturate at the rate of 3.5 mg /Kg body wt i/m. The examination of blood smear on the next day of diminazene aceturate treatment showed the presence of Trypanosoma evansi without any reduction in the parasitaemia level. But, blood smear obtained after Antrycide Prosalt, at the dose rate of 7.4 mg/ Kg b.wt- s/c , treatment free of T.evansi and hence it was presumed that the buffaloes might have been infected with diminazene aceturate resistant strain of Trypanosoma evansi. In addition, examination of blood smears collected from the remaining animals revealed that eight animals were found to carry Trypanosoma evansi with a moderate parasitaemia level of ++, without showing any clinical signs of Department of Veterinary Parasitology, Veterinary College and Research Institute, Orathanadu, Tamil Nadu, India, *E-mail: ponnuvet@gmail.com 1 Buffalo Bulletin (March 2015) Vol.34 No.1 reports an outbreak of trypanosomosis in buffaloes caused by Diminazine aceturate resistant strain of T. evansi. showed typical clinical symptoms of clinical trypanosomosis with parasitaemia level of +++, while the remaining 8 animals though they harboured moderate parasitaemia level of ++, did not exhibit any symptoms (Figure 1). The findings of the present investigation are in consonance with Lang (2001) who recorded trypanosomosis in an average of 7.97 percent buffaloes in delta areas in Vietnam by blood smear examination and immunodiagnostic method. Lang (1984) also reported that buffaloes suffered with surra had heavy clinical signs and died more when they meet a lot of environmental stress and the light infection rates in buffaloes could be associated with the environmental factors rather than host factors, but this observations do not corroborate with the findings of the present study. Because, the hot and humid climatic conditions prevailed here during month of August might definitely have caused much stress to animals, despite of this barring two animals others did not exhibit any clinical signs. This observation is in agreement with Aulakh (2003) who reported that buffaloes exhibited latent infection and more than 50-80 percent of infections are cryptic and undetectable by direct microscopy. In this case, intriguingly Trypanosoma evansi with parasitaemia level of +++ was observed in the blood smear obtained after diminazene treatment (Figure 2). But the drug Antrycide Prosalt, given on subsequent day, was able to clear the parasites clearly. These observations have prompted to suspect that animals might have been infected with diminazene resistant strain of Trypanosoma evansi. The observations recorded in the present case are akin to the findings of Elamin et al. (1982) who stated that single doses of 3.5 mg/ HISYORY AND OBSERVATIONS The buffalo unit of District Livestock Farm (DLF), Orathanadu, Thanjavur district, is located inside the newly started Orathanadu Veterinary College campus in Tamil Nadu. A total of 144 buffaloes are being maintained there. The department of Parasitology received the blood smears obtained from buffalo with a history of fever (104°C), oedema of the legs, frequent micturition and pale visible mucus membrane. The blood smears were stained with Giemsa stain and examined under oil immersion. The affected animals were initially treated with Diminazine aceturate 3.5 mg / kg b.wt – i.m and then with Antrycide Prosalt 7.4 mg/kg b.wt s/c. After each treatment blood smears were collected and examined to ascertain that whether parasites are eliminated or not. The blood smears were also collected from remaining animals and screened for Trypanosoma evansi. Animals those found to be harboured T.evansi without clinical signs and animals which diagnosed negative for T.evansi as well were treated with Antrycide Prosalt 7.4 mg/kg b.wt s/c. A day after the treatment, the blood smears were collected from T.evansi infected animals and examined to monitor post treatment parasitaemia level. RESULTS AND DISCUSSIONS In the present investigation, of the 144 buffaloes 10 animals (6.9 %) were found positive for trypanosomosis. But, only two animals kg of berenil were less effective against T.evansi in mice. Gill (1991) also stated that there are variable reports on the therapeutic efficacy of diminazene 2 Buffalo Bulletin (March 2015) Vol.34 No.1 Figure 1. Parasitaemia before Diminazene aceturate treatment. Figure 2. Parasitaemia after Diminazene aceturate treatment. 3 Buffalo Bulletin (March 2015) Vol.34 No.1 aceturate in buffaloes. In a similar vein Singh and Joshi (1991) observed that prophylactically single dose of diminazene (10 mg/kg) was not effective as there was persistence of T. evansi in buffaloes 48 and 30 days after treatment. They also reported that Quinapyramine and isometamedium were good therapeutic agents but prophylactically Quinapyramine proved better than isometamedium. In contrast, Aulakh (2003) reported that there was progressive decrease in number of trypanosomes immediately after treatment and blood smear was cleared of trypanosomes within eight hours of treatment with berenil (Diminazene aceturate) 5 mg/kg body weight. (caused by T. evansi) in the northern provinces of Vietnam, p. 165-172. In Results of study on Veterinary Science and Technique from 1979-1985 of NIVR. Agriculture Publishing House, Hanoi, Vietnam. Lang, P.S. 2001. Studies on incidence and control of Trypanosomiasis in buffaloes caused by Trypanosoma evansi steel 1885 in North Vietnam, p. 1-8. In Proceedings of Buffalo Workshop, Vol. 1. Hanoi, Vietnam. Shaba, P., O.P. Sharma, N.P. Kurade, J.R. Rao, R.K. Singh, N.N. Pandey and Bhanu Prakash. 2006. In vitro antitrypanosomal activity and cytotoxicity of methanolic extract of Plumbago zeylanica against Trypanosoma evansi. J. Vet. Pub. Health, 4: 31-36. Singh, B. and S.J. Joshi. 1991. Epidemiology, clinicopathology and treatment of clinical Trypanosoma evansi infection in buffalo (Bubalus bubalis). Indian Vet. J., 68: 975979. Witola, W.H., A. Tsuda, N. Inoue, K. Ohashi and M. Onuma. 2005. Acquired resistance to berenil in a cloned isolate of Trypanosoma evansi is associated with upregulation of a novel gene, TeDR40. Parasitology, 131: 635-646. ACKNOWLEDGEMENT Authors thank Deputy Director and Veterinary Assistant Surgeons working in the DLF, Orathanadu for the support extended to carry out the study. REFERENCES Aulakh, G.S. 2003. Haemato-biochemical and therapeutic studies on haemoprotists in bovines. M.V. Sc., Thesis, Punjab Agricultural University, Ludhiana, India. Elamin, E.A., A.M. Homeida and S.E. Adam. 1982. The efficacy of berenil (diminazene aceturate) against Trypanosoma evansi infection in mice. J. Vet. Pharmacol. Ther., 5: 259-265. Gill, B.S. 1991. Trypanosomes and Trypanosomiosis in Indian Livestock. ICAR Publication, New Delhi, India. p. 2-12. Lang, P.S. 1984. Epidemiology of Trypanosomiasis 4 Buffalo Bulletin (March 2015) Vol.34 No.1 Original Article EVALUATION OF UREA MOLASSES MULTI-NUTRIENT BLOCKS CONTAINING ALTERNATE FEED RESOURCES IN BUFFALOES M. Choubey, M. Wadhwa and M.P.S. Bakshi* ABSTRACT compared to control group. The blood urea nitrogen (BUN) was higher (P<0.05) in animals offered UMMBs as compared to animals in control group. The purine derivatives (PDs) excreted in the urine were comparable in all the groups. All the animals gained weight, but the differences were statistically non significant. It was concluded that WB and TP could be incorporated into UMMBs without any adverse effect on palatability, nutrient utilization, rumen metabolites or health of buffaloes. The present study was undertaken to formulate and compare the nutritional worth of conventional urea molasses multinutrient block (UMMB) with UMMB containing waste bread (WB) and/or tomato pomace (TP) in buffaloes. Wheat flour in the UMMB was replaced with WB and oiled mustard cake with TP. The in vitro digestibility of nutrients, release of ammonia and partitioning factor were statistically comparable. UMMB containing WBTP resulted in higher total volatile fatty acids (VFAs) production and availability of metabolizable energy (ME). 20 male Murrah buffaloes (442.1±6.3 kg BW) were randomly distributed into five equal groups. The animals in control group were offered 2 kg conventional concentrate mixture supplemented with 5 kg green fodder and 9 kg wheat straw. Same feeding schedule was followed for animals in the experimental groups, except that in place of 2 kg conventional concentrate mixture, only 1 kg conventional concentrate mixture was offered with ad lib conventional UMMB or the one containing WB, TP or WBTP. The daily intake of block varied from 1.08 kg (conventional) to 1.84 kg (TP). The DM intake was comparable in all the groups. Supplementation of UMMBs in the diet of experimental animals improved (P<0.05) the digestibility of CP and TCA-N concentration in the rumen resulted in higher (P<0.05) N-retention as Keywords: in-vitro/in-vivo, nutrient availability, rumen metabolites, tomato pomace, urea molasses multinutrient block, waste bread INTRODUCTION The poor quality crop residues constitute the bulk of dry matter consumed by the ruminants under field conditions (Bakshi and Wadhwa, 2011). The enrichment of such poor quality roughages with urea and other NPN resources like UMMB improved the nutrient utilization (Bakshi et al., 1986; Wadhwa and Bakshi, 2011a,b) and improved milk production (Lamba et al., 2002), thus helped to save oil seed cake/concentrate for vulnerable species. The demand and cost of conventional energy (starch/wheat flour) and protein (groundnut/ mustard cake) supplements have escalated due Department of Animal Nutrition, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, India, *E-mail: bakshimps@yahoo.com 5 Buffalo Bulletin (March 2015) Vol.34 No.1 to dynamic explosion of human population and urbanization. There is a dire need to exploit alternate energy and protein supplements for ruminants. Waste bread (left over, unsold, fungal infested etc.) available in abundance, is an excellent source of cooked bypass starch and protein. Tomato pomace is another potential feed resource (consisting of tomato peels, seeds and damaged tomatoes) a good source of lycopene, a pigment that gives colour WB, while mustard cake was replaced with TP on nitrogen basis. The required quantity of molasses and urea were weighed and mixed in a 25 kg capacity iron pan. The guar gum was added to the urea-molasses mixture as a binder in UMMBs. A premix of other ingredients was prepared (CaO was the last ingredient added to this premix) and added to iron pan with rapid stirring. Heat generated at this stage, converted the contents into a semi-solid mass, which was put into rectangular die of block making machine. The solidified UMMBs were packed into polythene bag. to meat and is a known antioxidant. However, till date neither WB nor TP has been used in the formulations of UMMB. This study was therefore, planned to formulate UMMBs containing alternate energy and protein supplements like WB and/or TP and compare these with conventional UMMB and to assess the effect of such UMMBs on nutrient utilization in buffaloes. In-vitro and in-vivo evaluation of different UMMBs The net gas production, digestibility of nutrients and availability of ME from different UMMBs was assessed by in vitro gas production technique (Menke et al., 1979). For in vivo evaluation 20 male Murrah buffaloes (5-6 yr old of 442.1±6.3 kg body weight) were randomly distributed into five equal groups. The animals in the control group were fed 2 kg conventional concentrate mixture (maize 30, mustard cake 10, solvent extracted mustard cake 20, rice bran 15, solvent extracted rice bran 22, mineral mixture 2 and common salt 1 percent each) supplemented with 5 kg green fodder and 9 kg wheat straw (NRC, 2001). Same feeding schedule was followed for animals in the experimental groups, except that in place of 2 kg conventional concentrate mixture, only 1 kg conventional concentrate mixture was offered with ad lib conventional UMMB or the one containing WB, TP or WBTP. The animals were weighed for 3 consecutive days at 15 days interval before feeding and the feeding schedule was adjusted accordingly. At the termination of experimental period, a 7-day metabolism trial was conducted. The samples of MATERIALS AND METHODS Procurement of alternate energy and energy cum protein supplements Waste bread procured from Cremica Industries, Phillaur, was sun dried for 14 h in order to eliminate the aflatoxin, if any (Gowda et al., 2005). The sundried, ground waste bread was got tested for the level of mycotoxins, from the Department of Veterinary Microbiology, GADVASU. The tomato pomace (containing tomato peels, seeds and damaged tomatoes) was procured free of cost from Nijjar Agro Industries, Amritsar. The tomato pomace was sun dried and finely ground. Preparations of UMMBs Iso-nitrogenous and iso-caloric UMMBs were prepared by manipulation of feed ingredients (Table 1) in a block-making machine. In experimental blocks wheat flour was replaced with 6 Buffalo Bulletin (March 2015) Vol.34 No.1 from each animal were collected for 3 consecutive days at 2 hourly intervals, starting from zero and continuing up to 12 h post-feeding. The rumen liquor samples were strained through four layered muslin cloth and few drops of saturated mercuric chloride solution were added to arrest the microbial activity. The samples of strained rumen liquor (SRL) were pooled for the respective animal and the pH was measured immediately and the samples were stored in a refrigerator till analyzed. The SRL samples were analyzed for TCA- precipitable nitrogen, non-protein nitrogen (NPN), ammonical nitrogen (AOAC, 2005) and total VFAs (Barnett and Reid, 1957). WB, TP, different UMMBs, concentrate mixture, wheat straw, green fodder, feed residue and faeces were analyzed for their proximate constituents (AOAC, 2005), cellulose (Crampton and Maynard, 1938) and other cell wall constituents (Robertson and Van Soest, 1981). The urine sample (10 ml) was kept in a vial containing 0.5 ml of 20% H2SO4 to keep the pH below 3 and analyzed for allantoin (Young and Conway, 1942), uric acid (Trivedi et a1., 1978) and creatinine (Folin and Wu, 1919). Purines absorbed were calculated from the daily urinary PD excreted (IAEA, 1997). Collection and analysis of rumen liquor samples The rumen studies were conducted on three rumen fistulated male buffaloes for assessing the effect of supplementing different blocks on the rumen metabolites. After 30 days adaptation on a particular ration, the rumen liquor samples Collection and analysis of blood samples At the termination of metabolism trial blood samples were collected (in heparin and sodium flouride + oxalate vials) from the juglar vein of animals at 4 h post parandial. The serum Table 1. Ingredient composition of different urea molasses multinutrient blocks (UMMBs), g/3 kg lick. Ingredients Conventional WB TP WBTP Molasses 900 900 900 900 Urea Mustard cake Deoiled rice bran Wheat flour Waste bread Tomato pomace Mineral mixture Calcium oxide Salt Guar gum 300 300 300 304 300 300 315 300 319 300 450 450 450 450 450 300 450 450 300 450 120 120 60 120 115 60 120 105 60 120 95 60 WB- Waste bread-UMMB; TP- Tomato pomace-UMMB; WBTP-Waste bread tomato pomace-UMMB. 7 Buffalo Bulletin (March 2015) Vol.34 No.1 was separated and stored at 0oC till analyzed. The analysis was conducted on Erba (Mannheim) Chem 5X (Transasia). The serum collected with sodium fluoride and oxalate was used for assay of blood glucose (Trinder, 1969), total protein (Henry et al., 1974), albumin (Doumas et al., 1971), globulin was calculated by difference between total protein and albumin, urea (Evans, 1968), calcium (Henry and Dryer, 1963) and phosphorus (Amador and Urban, 1972). The data were analyzed by simple ANOVA (Snedecor and Cochran, 2004) by using SPSS (2007) version 16 and means were compared by using Tukey’s b test. feedstuffs. In-vitro evaluation of different UMMBs The net gas production and digestibility of OM and NDF; release of ammonia and partitioning factor were similar in all the blocks (Table 3). The TVFAs production varied from 8.95 (TPUMMB) to 9.75 meq/dl (Conventional-UMMB). Replacement of cereal grains with WB (both in WB and WBTP blocks) showed no significant effect on the production of TVFA, and level was statistically comparable (P>0.05) to that of ConventionalUMMB. However, replacement of mustard cake with TP alone (TP-UMMB) resulted in depression (P<0.05) in TVFAs as compared to that produced from the Conventional-UMMB. The availability of ME from different blocks varied from 5.71 (WBUMMB) to 6.03 MJ/kg DM (WBTP-UMMB). A combination of WB and TP (WBTP-UMMB) proved to be a better option as far as production of VFAs and availability of ME was concerned. These results showed that the incorporation of WB and/or TP in the blocks would not affect nutrient utilization. RESULTS AND DISCUSSION Chemical composition of the feedstuffs The WB used in this study had negligible level of mycotoxins. The WB and TP contained 12.5 and 20.9% CP, 1.3 and 11.0% EE respectively on dry matter basis (Table 2). WB is an excellent source of bypass starch (Bhargava, 2008). Besides energy and protein, TP is a good source of phosphorus, essential fatty acids (linoleic acid), lysine, vitamin E and lycopene, a pigment which gives a typical colour to meat and acts as an antioxidant (Wenli et al., 2001; Kravchenko et al., 2003). The cell wall constituent i.e. NDF, ADF, cellulose and hemi cellulose were much higher in TP as compared to that in WB. The total ash content was comparable in all UMMBs. The high ash content in the blocks could be due to high level of mineral mixture used (150 g vs. 10 g/kg). The comparable CP (41.2 to 41.7%) and EE (1.2 to 1.83%) in different UMMBs revealed that the blocks were iso nitrogenous and iso caloric. The WB had the lowest cell wall constituents followed by different blocks and other Impact on feed consumption and digestibility of nutrients The daily intake of concentrate mixture was higher (P<0.05) in the control group as compared to those offered UMMBs (Table 4). But within the UMMB groups, it was comparable. The daily intake of UMMBs varied from 1.08 kg (Conventional-UMMB) to 1.84 kg (TP-UMMB). The comparable DM intake in all the experimental groups suggested that incorporation of WB and/or TP did not have any negative effect on palatability of blocks, rather improved the consumption of wheat straw. Tiwari et al. (1990) and Toppo et al. (1997) also observed increased consumption of DM in the 8 9 2.8 97.2 12.5 1.3 10.0 2.0 1.5 8.0 Total ash OM CP EE NDF ADF Cellulose Hemicellulose 93.1 20.9 11.0 68.0 53.0 38.0 15.0 6.9 TP 90.5 21.4 4.1 30.0 14.0 8.0 15.5 9.5 Concentrate mixture WB- Waste bread; TP- Tomato pomace. WB Constituents 72.4 41.2 1.4 11.0 6.3 2.0 4.8 27.6 Conventional Table 2. Chemical composition of waste bread and tomato pomace, % DM. 72.8 41.4 1.2 10.0 6.0 2.0 4.0 27.2 WB UMMBs 72.9 41.6 1.83 13.5 7.5 3.0 6.0 27.1 TP 73.5 41.7 1.83 12.0 7.3 2.5 4.8 26.5 WBTP 86.8 20.8 2.0 46.0 35.0 18.0 11.0 13.2 Green 92.5 3.4 1.0 78.0 50.5 41.0 27.5 7.5 Wheat straw Buffalo Bulletin (March 2015) Vol.34 No.1 Buffalo Bulletin (March 2015) Vol.34 No.1 Table 3. In vitro utilization of nutrients from different UMMBs. Parameter Conventional WB TP WBTP PSE NGP, ml/g DM/24h OMD, % NDFD, % PF 95.70 94.49 93.64 93.44 0.51 69.87 10.39 3.84 69.57 10.27 3.89 69.26 10.15 3.83 69.45 10.39 3.85 0.10 0.11 0.03 NH3-N, % 0.058 0.057 0.057 0.056 0.00 TVFA, meq/dl ME, MJ/kg DM 9.75 5.78ab 9.50 5.71a 8.95 5.89b 9.50 6.03c 0.12 0.04 b ab a ab NGP- Net gas production; D-Digestibility; PF- Partitioning factor; Figures with different superscripts in a row differ significantly (P<0.05). Table 4. Consumption of different feedstuffs, kg/d. Feedstuffs Conc. Mixture UMMB Wheat straw Green fodder Total DM Control UMMBs PSE Conventional WB TP WBTP 1.84b 0.92a 0.92a 0.92a 0.92a 0.09 -7.34 1.08 7.78 1.30 8.15 1.84 8.10 1.22 7.88 0.06 0.16 1.01 0.80 0.80 0.80 0.80 0.04 10.98a 12.06b 12.01b 12.12b 11.96b 0.12 62.10 b 62.31 58.40 59.58 2.11 18.88 81.12 9.33 90.67 19.82 80.18 8.89 91.11 18.52 81.48 8.94 91.06 19.70 80.30 9.17 90.83 0.40 0.40 0.65 0.64 52.62 55.81 66.83b 47.75 41.44 51.64 55.89 65.79b 48.25 40.56 53.64 56.52 64.06b 48.25 41.43 51.70 55.74 62.77b 47.94 41.08 1.43 1.25 2.53 1.44 1.64 Water, l/d 46.58 Roughage to concentrate ratio Concentrate 18.25 Roughage 81.75 Green 12.44 Straw 87.56 Digestibility of nutrients, % DM 48.10 OM 51.18 CP 41.30a NDF 46.00 ADF 38.08 a b ab Figures with different superscripts in a row differ significantly (P<0.05). 10 ab Buffalo Bulletin (March 2015) Vol.34 No.1 UMMB supplemented groups. The higher water intake (P<0.05) in animals offered UMMBs as compared to animals in the control group could be due to higher intake of urea and minerals through blocks. The water consumption by animals offered blocks was statistically comparable. The supplementation of UMMBs improved (P<0.05) the digestibility of crude protein in comparison to un-supplemented control group. Tiwari et al. (1990) and Toppo et al. (1997) also observed similar results for CP digestibility in UMMB supplemented groups. The supplementation of UMMBs improved (P>0.05) the digestibility of DM, OM and cell wall constituents in comparison to that of control, but the differences were statistically non significant. was higher (P<0.05) in animals offered UMMB supplemented diets as compared to conventional control group. But within the UMMB supplemented groups the differences were statistically non significant. Although, BUN was higher in treatment groups, but no symptoms of urea toxicity was observed during the study period and all animals were found to be active and in good health. The possibility of less heat generation (by CaO during mixing) required to produce maillard product, could not be ruled out. The plasma concentration of different parameters was within the range of values (Jain, 1996; Kaneko, 1997). Impact on urinary excretion of purine derivatives Allantoin, uric acid and the total purine derivatives excreted in urine of animals were comparable in all the groups (Table 6). Allantoin constituted the major (83-91%) proportion of total PD excreted in urine. The purine derivates absorbed and microbial protein synthesized in the rumen and in turn utilized in the lower gastro-intestinal tract were also comparable in all the groups, indicating that nutrients from different UMMBs were utilized effectively. Impact on rumen metabolites and blood profile The TVFA concentration in the rumen was comparable in all the groups while pH remained almost constant throughout the study (Table 5). It indicated that higher consumption of different blocks did not have any adverse effect on rumen environment. The NPN concentration was highest (P<0.05) in the rumen liquor of animals offered control diet, while it was lowest in the animals offered diet supplemented with UMMB containing WB and TP. Ammonia-N as expected was higher (P<0.05) in rumen liquor of animals offered diet supplemented with UMMBs (except that in WBTP-UMMB), confirming the earlier reports (Toppo et al., 2000; Jain et al., 2005). The efficient utilization of NPN resulted in higher concentration of TCA-N in WBTPL group as compared to other groups, confirming that WBTPL provided nutrients synchronized in energy and protein. Supplementing the control diet with different UMMBs did not have any significant impact on the blood profile of animals. However, the BUN level Nitrogen utilization and body weight changes The N-intake was higher (P<0.05) in the animals offered different iso-nitrogenous blocks as compared to control group (Table 7). It could be due to higher N content in blocks than that of conventional control concentrate mixture and higher licking of block (1.08 to 1.84 kg/animal/ day) as compared to expected intake (500 g/ animal/d). The urinary-N excretion was higher (P<0.05) in animals offered UMMBs as compared to those in control group. The urinary-N excretion was statistically comparable in animals offered 11 Buffalo Bulletin (March 2015) Vol.34 No.1 Table 5. Supplementation of UMMBs and rumen metabolites. Parameter Control Rumen metabolites pH 6.83 TVFA, meq/dl 9.10 TCA-N, mg/dl 48.60 NPN, mg/dl 35.91b NH3-N, mg/dl 11.14 Blood profile, mg/dl Glucose 48.14 BUN 21.32a Total protein, 6.64 g/dl Albumin (A), 1.90 g/dl Globulin (G), 4.75 g/dl A:G 0.40 Calcium 10.45 Phosphorus 8.18 UMMBs WB Conventional TP WBTP PSE 6.85 9.47 41.83 33.13ab 15.46 6.90 9.00 38.29 23.88a 12.97 6.88 9.00 42.16 24.40a 12.10 6.80 9.13 48.32 26.11ab 10.39 0.01 0.28 1.59 1.60 0.72 49.75 47.48b 47.52 44.28b 58.52 38.25b 50.55 44.20b 1.74 2.54 7.30 7.66 7.54 6.76 0.25 2.08 2.30 2.16 2.12 0.07 5.22 5.36 5.38 4.56 0.21 0.40 10.82 9.31 0.45 11.62 10.22 0.41 11.59 11.36 0.51 10.96 11.06 0.02 0.32 0.66 Figures with different superscripts in a row differ significantly (P<0.05). 12 Buffalo Bulletin (March 2015) Vol.34 No.1 Table 6. Supplementation of blocks and urinary purine derivatives in adult buffaloes. Parameter Allantoin (A), mM/d Uric acid (UA), mM/d Purine derivatives (PD), mM/d Creatitine, mM/d A as % of PD UA as % of PD Purines absorbed, mM/d MNS, g/d Control UMMBs WB Conventional TP WBTP PSE 35.0 31.86 27.43 28.24 31.92 1.76 7.50 7.74 2.59 4.42 3.12 1.04 42.50 39.60 30.02 32.66 35.04 2.70 37.26 44.19 37.43 48.29 36.72 1.98 84.32 15.68 83.26 16.74 91.12 8.88 86.00 14.00 90.97 9.03 1.41 1.41 186.65 164.70 83.58 103.16 119.02 23.49 135.70 119.75 60.76 75.01 86.53 17.07 Table 7. Supplementation of blocks and nitrogen retention in adult buffaloes, g/d. Parameter Control Nitrogen balance, g/day N-Intake 131.57a Faecal-N 77.00 Urinary-N 33.41a N-outgo 110.41 N-Retained 21.16a BV 15.68 Body weight changes Initial BW, kg 437.98 Final BW, kg 450.64 Gain in BW 350.18 g/d Conventional UMMBs WB TP WBTP PSE 201.69b 66.93 59.71b 126.64 75.04b 36.88 220.31b 74.47 53.33ab 127.8 92.51b 41.52 207.14b 74.77 56.71ab 131.48 75.57b 36.62 213.10b 79.32 51.94ab 131.26 81.83b 38.44 8.03 2.45 3.10 5.55 7.24 3.32 441.05 451.65 445.58 457.50 438.28 454.25 447.85 466.52 6.39 4.64 386.74 409.72 603.85 359.55 107.58 Figures with different superscripts in a row differ significantly (P<0.05). 13 Buffalo Bulletin (March 2015) Vol.34 No.1 UMMBs. The N retention was higher (P<0.05) in animals offered UMMBs as compared to control group. The apparent biological value was also higher (P>0.05) in the animals supplemented with blocks as compared to those in control group. Bakshi, M.P.S. and M. Wadhwa. 2011. Nutritional status of dairy animals in different regions of Punjab State in India, Indian J. Anim. Sci., 81: 52-58. Bakshi, M.P.S., V.K. Gupta and P.N. Langar. 1986. Fermented straw as a complete basal ration for ruminants, Agr. Wastes, 16: 37-46. Barnett, A.J.G. and R.L. Reid. 1957. Studies on the production of volatile fatty acids from the grass in artificial rumen.1. Volatile fatty acid production from fresh grass, J. Agr. Sci., 13: 315-321. Bhargava, A. 2008. Study on waste bread as non conventional energy supplement for buffalo calves. M.V. Sc. Thesis, Guru Angad Dev Veterinary and Animal Sciencies University, Ludhiana, India. Crampton, E.W. and L.A. Maynard. 1938. The relation of cellulose and lignin content to the nutritive value of animal feeds. J. Nutr., 15: 383-395. Doumas, B. T., W. A. Watson and H. G. Briggs. 1971. Albumin standards and the measurements of serum albumin with bromocresol green. Clin. Chim. Acta, 31: 87-96. Evans, R.T. 1968. Manual and automated methods for measuring urea based on a modification of its reaction with diacetyl monoxime and thiosemicarbazide. J. Clin. Pathol., 21: 527529. Folin, D. and H. Wu. 1919. A system of blood analysis. J. Biol. Chem., 38: 81-110. Gowda, N.K.S., V. Malathi, R.U. Suganthi and A. Raghvendra. 2005. Effect of dry heat and sunlight on the aflatoxin content in compounded feed. Indian J. Anim. Nutr., 22: 132-134. Henry, R. J. and R. L. Dryer. 1963. Standard Method of Clinical Chemistry, Vol. 4, Academic Changes in live weight The average daily gain in weight of all the animals offered diet supplemented with UMMB was higher than that of control group, but the differences were statistically non significant. The animals offered diet supplemented with UMMB containing TP gave the highest gain/d (603.85 g/d) while gain was lowest (350.18 g/d) for unsupplemented control group. CONCLUSION It was concluded that non-conventional feed resources like waste bread and tomato pomace could be incorporated into UMMBs without any adverse effect on palatability, nutrient utilization, rumen metabolites or health of animals. Above all the preparation of UMMB could be economized and conventional ingredients could be spared for more vulnerable species. REFERENCES Amador, E. and J. Urban. 1972. Simplified serum Phosphorous analysis by continuous flow UV Spectrophotometry, Clin. Chem., 18: 601-604. Association of Official Analytical Chemists. 2005. Official Methods of Analysis, 18th ed., (Association of Official Analytical Chemists, Arlington) 14 Buffalo Bulletin (March 2015) Vol.34 No.1 Press, New York, USA. p. 205. Henry, R.J., D.C. Canon and J.W. Winkelman. 1974. Clinical Chemistry, Principles and Techniques, 2nd ed. Hagerstown, MD: Harper and Row. International Atomic Energy Agency. 1997. Estimation of rumen microbial protein production from purine derivatives in urine. International Atomic Energy Agency, IAEA-TECDOC- 945, Vienna. Jain, N.C. 1996. Schalm’s Veterinary Hematology, 5th revised ed. Lea and Febiger, Philadelphia, USA. Jain, N., S.P. Tiwari and P. Singh. 2005. Effect of urea molasses mineral granules (UMMG) on rumen fermentation pattern and blood biochemical constituents in goat kids fed sola (Aeschonomene indica Linn) grass based diet. Vet. Arch., 75: 521-530. Kaneko, J.J. 1997. Clinical Biochemistry of Domestic Animals, 5th revised ed.Academic National Research Council. 2001. Nutrient Requirements of Dairy Cattle, 7th revised ed. National Research Council. National Academic Press, Washington, DC., USA. Robertson, J.B. and P.J. Van Soest. 1981. The detergent system of analysis and its application to human foods. In James, W.P.T. and O. Theander (eds.) The Analysis of Dietary Fibre in Food. Marcel Dekker, Inc., New York, USA. Snedecor, G. W. and W. G. Cochran. 2004. Statistical Methods, Oxford and IBH Publications, New Delhi. Statistical packages for Social Sciences (SPSS), 2007. Version 16, SPSS Inc., Linois, USA. Tiwari, S.P., U.B. Singh and U.R. Mehra. 1990. Urea molasses mineral blocks as afeed supplement: effect on growth and nutrient utilization in buffalo calves. Anim. Feed Sci. Tech., 29: 333-341. Toppo, S., U.R. Mehra and R.S. Dass. 2000. Effect of urea supplementation to urea molasses mineral block (UMMB) lick on nutrient utilization and rumen fermentation pattern in crossbred cattle. Indian J. Anim. Nutr., 70: 415-418. Toppo, S., A.K. Verma, R.S. Dass and U.R. Mehra. 1997. Nutrient utilization and rumen fermentation pattern in crossbred cattle fed different planes of nutrition supplemented with urea molasses mineral block. Anim. Feed Sci. Tech., 64: 101-112. Trinder, P. 1969. Determination of glucose in blood using glucose- oxidase with an alternate oxygen accepter. Ann. Clin. Biochem., 6: 24-27. Trivedi, R.C., L. Rebar and E. Berka. 1978. New enzymatic method for serum uric acid at 500 nm. Clin. Chem., 24: 1908-1910. Press, Inc., New York, USA. Kravchenko, L.V., S.V. Morozov, N.A. Beketova, V.P. Deryagina, L.I. Avreneva and V.A. Tutelyan. 2003. Antioxidant status of rats receiving lycopene in different doses. Bulletin Exp. Biol. Med., 135: 353-357. Lamba, J.S., M. Wadhwa and M.P.S. Bakshi. 2002. Effect of feeding naturally fermented urea wheat straw on the productive and reproductive performance of milch buffaloes. Bubalus bubalis, 89(2): 72-79. Menke, K.H., L. Raab, A. Salewski, H. Steingass, D. Fritz and W. Schneider. 1979. The estimation of digestibility and metabolizable energy content of ruminant feedstuff from the grass production when they are incubated with rumen liquor in vitro. J. Agr. Sci., 93: 217222. 15 Buffalo Bulletin (March 2015) Vol.34 No.1 Wadhwa, M. and M.P. S. Bakshi. 2011a. Processing and evaluation of poor-quality crop residues as livestock feed, p. 51-55. In Makkar, H.P.S. (ed.) FAO Animal Production and Health Proceedings, ‘Successes and Failures with Animal Nutrition Practices and Technologies in Developing Countries. Rome, Italy. Wadhwa, M. and M.P.S. Bakshi. 2011b. Ureamolasses-multinutrient blocks/licks: a blend of nutrients for ruminants, p. 35-39. In Makkar, H.P.S. (ed.) FAO Animal Production and Health Proceedings, ‘Successes and Failures with Animal Nutrition Practices and Technologies in Developing Countries. Rome, Italy. Wenli, Y., Z. Yaping, X. Zhen, J. Hui and W. Dapu. 2001. The antioxidant properties of lycopene concentrate extracted from tomato paste. J. Am. Oil. Chem. Soc., 78: 697-670. Young, E.G. and C.F. Conway. 1942. On the estimation of allantoin by Riminic-Schryver reaction. J. Biol. Chem., 142: 839-852. 16 Buffalo Bulletin (March 2015) Vol.34 No.1 Original Article EFFECT OF SUPPLEMENTATION OF TINOSPORA CORDIFOLIA ON LACTATION PARAMETERS IN EARLY LACTATING MURRAH BUFFALOES N.A. Mir1,*, P. Kumar1, S.A. Rather2, F.A. Sheikh3 and S.A. Wani4 ABSTRACT SNF % however significant change was observed in milk protein % of treatment group compared to control group. No significant difference in total milk Ig was observed between control and treatment group. The DMI showed an increasing trend with significant difference from day 11 up to day 75 of lactation between control and treatment. The present study was conducted to study production parameters of lactating Murrah buffaloes supplemented with Tinospora cordifolia. Twelve lactating Murrah buffaloes in early stage of lactation were selected from the herd of National Dairy Research Institute Karnal, Haryana. The buffaloes were divided into two groups of six animals each. One group was taken as control and the other group supplemented with Tinospora cardifolia 120 g/ animal/day from day 3 to day 75 of lactation was taken as treatment group. All the buffaloes were hand milked throughout the experimental period. Keywords: Murrah buffaloes, Bubalus bubalis, Tinospora cordifolia, lactating INTRODUCTION Buffalo is the major source of milk production and contributes more than 54% of annual milk production in India. The buffalo has evoked worldwide interest as an animal with potential for meeting the emerging demand for meat, milk and work in developing countries. Further, in countries like India, the buffalo is the major milch animal, accounting for more than 50% of the milk produced. However it is well known fact that large amount of milk produced is not because of higher productivity but because of the higher population of animals. The low productivity of buffaloes is primarily due to poor genetic potential, inadequate supply of nutrients and unscientific Milk samples from mixed whole milking were collected early in the morning in sterilized milk sampling bottles from all the animals upto 75th day of lactation. The milk samples were analyzed for somatic cell count, composition and milk total immunoglobulin’s. The milk yield was recorded daily. Significant increase (P<0.05) in milk yield of treatment group as compared to control group was obtained. The milk somatic cell count was significantly lower in treatment group as compared to control group. The milk composition (fat %, protein %, lactose % and SNF %) was estimated using LactoScan milk analyzer. No significant change was observed in milk fat %, lactose % and DCP Division, 2ABC Division, 3DCN Division, 4 DX Division, National Dairy Research Institute, Karnal, Haryana, India, *E-mail: mir643@rediffmail.com 1 17 Buffalo Bulletin (March 2015) Vol.34 No.1 MATERIALS AND METHODS approach in feeding. Hence in order to improve the productivity of buffaloes, there is need to adopt scientific feeding strategies. Guduchi (Tinospora cordifolia) is a large glabrous deciduous climbing shrub belonging to family Menispermaceae. It is one of the most versatile rejuvenating herbs found throughout tropical Indian subcontinent. Commonly known as a rasayan plant, it is widely used in veterinary folk, ayurveda and other systems of medicine for its general tonic, immunomodulatory, antioxidant, antibacterial, hepatoprotective and anti-inflammatory properties (Krishna et al., 2009). Guduchi itself means the “one which protects our body” and Amrita means “the nectar that confers immortality”. In Hindi the plant is commonly known as ‘giloya’, which is a Hindu mythological term that refers to the heavenly elixir that has saved celestial beings from old age and keeps them eternally young. Though every part of plant has therapeutic value the stem is used in most of the medicinal preparations. It is claimed that the plant climbing up the Neem tree is said to be the best as synergy between these two bitter plants enhances guduchi’s efficacy. A variety The experiment was conducted in cattle yard of National Dairy Research Institute, Karnal, Haryana, India. Twelve early lactating murrah buffaloes were selected from institute herd. The animals were in 2nd lactation number with the mean body weight of 480 kg. The experiment was conducted during the months of april to june. Animal experimentation was performed in compliance with regulations set by the cattle yard, NDRI and approved by the Institutional Animal Ethics committee. The nutrient requirements of animals were met by feeding concentrate mixture and green fodders as per NRC 1989 .Animals had round the clock access to ad libitum fresh water. The dried cylindrical stem pieces of Tinospora cordifolia were collected from the local ayurvedic shop. Authentication of the stem was performed by the ayurvedic doctor in the institute health complex. The stems were ground to powder form in a medicinal herb grinding machine, weighed and packed in polythene. The animals under treatment group were fed dried guduchi stem powder by mixing it in small amount of concentrate 120g/day for a period of 72 days after calving(from day 3rd postpartum upto 75th day postpartum). The control animals were fed equal amount of concentrate without guduchi powder for similar period. Both control and treatment buffaloes were hand milked throughout experimental period. Milk samples from mixed whole milking were collected early in the morning in sterilized milk sampling bottles from all the animals upto 75th day of lactation on days 3, 11,19, 27, 35, 43, 51, 59, 67 and 75 of lactation. Milk samples were analyzed for somatic cell count by the method of (Singh and Ludri 2001). Milk composition (Fat %, SNF %, Lactose of constituents belonging to different classes such as alkaloids, diterpenoid lactones, glycosides, ecdysteroids, sesquiterpenoids, phenolics, aliphatic compounds and polysaccharides have been isolated from Tinospora cordifolia ( Singh et al., 2003). In present times, Tinospora cordifolia has been subjected for numerous chemical, Pharmacological, Pre-clinical and clinical investigations and many new therapeutic applications have been indicated, however in buffaloes no study has been conducted regarding supplementation of Tinospora cordifolia. Thus present study was undertaken to study the effect of supplementation of Tinospora cordifolia on lactation parameters of murrah buffaloes during early lactation. 18 Buffalo Bulletin (March 2015) Vol.34 No.1 infusion of hydromethanolic extract of Tinospora cordifolia in bovine subclinical mastitis initially enhanced somatic cell count but a significant reduction in somatic cell count was observed on day 15 of the treatment period. % and protein %) was estimated using Lacto Scan milk analyzer (Netco Company), The milk samples were maintained at 28-32oC at the time of analysis ,which is the calibration temperature of analyzer. Milk total immunoglobulin’s were estimated by zinc sulphate turbidity method of( McEvan and Fisher, 1970). Dry matter intake was estimated at weekly intervals. Milk composition There was no significant difference (P>0.05) in the milk fat%, SNF% and lactose% of control and treatment groups of lactating Murrah buffaloes, however there was significant (P.<0.05) difference in milk protein % of control and treatment groups, being higher in treatment group as compared to control group. However no literature is available in large animals for comparison of our study. RESULTS AND DISCUSSION Milk yield The overall average milk yield of control and treatment group of lactating murrah buffaloes was 7.19±0.10 and 8.00±0.12 kg/day. The milk yield of treatment group of buffaloes was significantly (P<0.05) higher from 12-19th day Dry matter intake The overall average dry matter intake in control and treatment groups was 11.27 and 11.88 (kg/day). The dry matter intake showed an increasing trend with significant difference between control and treatment group from day 15th up to 75th day postpartum. The percent increase in dry matter intake of treatment group as compared to control group was 5.13%. The increasing trend of dry matter intake during the period of our study is supported by Ingvartsen and Anderson, 2000; they reported that increase in dry matter intake during the lactation is the result of greater sensation of hunger caused by the rapid increase in nutrient demand. However no literature is available in large animals for comparison of our study. of lactation. There was 10.10% increase in milk yield of treatment group as compared to control group of buffaloes. (Mallick and Prakesh, 2011 a)also reported significant increase in milk yield of guduchi supplemented cows as compared to untreated control group. Somatic cell count Milk somatic cell count was higher on day 3rd of lactation in both control and treatment group and decreased thereafter, but the reduction was more in treatment group as compared to control group. The overall average of somatic cell count was significantly lower (P<0.05) in treatment group as compared to control group of buffaloes. Similar results were reported by (Mallick and Prakash, 2011b), they reported that somatic cell count was significantly higher in untreated control cows through the period of experiment as compared to guduchi supplemented group of cows. (Mukherjee et al, 2006) also reported that intramammary Milk total immunoglobulin’s The overall average of milk total immunoglobulin level of control and treatment group of lactating murrah buffaloes was 2.00±1.55 and 2.01±1.54 mg/ml. No significant difference (P>0.05) was observed in milk total immunoglobulin 19 Buffalo Bulletin (March 2015) Vol.34 No.1 levels in neonatal calf serum. Clin. Chim. Acta., 17: 155. Mukherjee, P.K., K. Maiti, K. Mukherjee and P.J. Houghton. 2006. Leads from Indian medicinal plants with hypoglycemic potentials. J. Ethnopharmacol., 106: 1-28. National Research Council. 1989. Nutrient Requirements of Dairy Cattle, 6th revised ed. National Academy of Science, Washington, DC. Singh, M. and R.S. Ludri. 2001. Influence of stages of lactation, parity and season on somatic cell counts in cows. Asian Austral. J. Anim., 14(12): 1775-1780. Singh, S.S., S.C. Pandey, S. Srivastava, V.S. Gupta, B. Patro and A.C. Ghosh. 2003. Chemistry and medicinal properrties of Tinospora cordifolia (Guduchi). Indian J. Pharmacol., 35: 83-91. level of control and treatment group of lactating murrah buffaloes during the experimental period. CONCLUSION Supplementation of Tinospora cordifolia increased milk production (10%) and milk quality in terms of reduction in somatic cell count. Supplementation of Tinospora cordifolia also enhanced dry matter intake (5%) of lactating murrah buffaloes, however there is need to carry out study in large group of animals and isolation of various constituents of Tinospora cordifolia for studying their pharmacological actions in bovines at cellular level. REFERENCES Ingvartsen, K.L. and J.B.Andersen. 2000. Integration of metabolism and intake regulation: a review focusing on periparturient animals. J. Dairy Sci., 83: 1573-1597. Krishna, K., B. Jigar and P. Jagruti. 2009. Guduchi (Tinospora cordifolia): Biological and Medicinal properties, a review. Int. J. Alt. Med., 6(2): 1-12. Mallick, S. and B.S. Prakash. 2011a. Effects of supplementation of Tinospora cordifolia to crossbred cows peripartum. Anim. Reprod. Sci., 123(1-2): 5-13. Mallick, S. and B.S. Prakash. 2011b. Influence of feeding Tinospora cordifolia on lactation parameters in crossbred cows. J. Anim. Physiol. An. N. doi:10.1111/j.14390396.2011.01228.x. McEvan, A.D. and E.W. Fisher. 1970. A turbidity test for estimation of immunoglobulin 20 Buffalo Bulletin (March 2015) Vol.34 No.1 Original Article PREVALENCE AND SEASONAL VARIATION IN IXODID TICKS ON BUFFALOES OF MATHURA DISTRICT, UTTAR PRADESH, INDIA Geeta Patel1, Daya Shanker1, Amit Kumar Jaiswal1, Vikrant Sudan1,* and Santosh Kumar Verma2 ABSTRACT INTRODUCTION Considering the economic impact of various ticks species on livestock, the present study was projected for epidemiological characterize of common ticks infesting water buffaloes. The present study was conducted between July 2010 and June 2011 period at various locations of Mathura region. A total of 635 water buffaloes were examined randomly. The overall prevalence of ticks infestation among buffaloes alone was found out to be 51.81%. The highest and lowest prevalence was reported in month of September (69.09%) and January (37.74%), respectively. Based on seasonal prevalence, highest tick infestation was found in rainy season (61.14%), followed by summer (50.95%) while lowest in the winter (43.46%). Overall highest age wise prevalence was noticed in the young ones (74.17%) followed by grownups (60.93%) and lowest in adults (36.33%). Buffalo-the incredible Asian dairy animal, is commonly known as ‘Black Diamond’, for its versatile role in socioeconomic upliftment of its owners from the rural agricultural communities. The major constraints in achieving maximum financial gain from these animals are the diverse disease conditions caused by ecto and endo parasites (Bianchin et al., 2007). A single female engorged tick is responsible for daily loss of 0.5 to 2 ml of blood, 8.9 ml of milk and 1 gram of body weight. Losses attributable to ticks are caused either directly, through tick worry, blood loss, damage to hides and udders, injection of toxins (and loss of body weight gain or indirectly through transmission of disease pathogens, milk yield reduction, stunted growth (FAO, 2004). The global economic losses due to tick infestation has been estimated as 14000 to 18000 million US $ annually in which India has a share of 498.7 million US $ (Minjauw and Mc. Lead, 2003). A large amount of data is available for the ecto and endo parasites of cattle, but when it comes to buffaloes and that too ectoparasites, the Keywords: buffaloes, Bubalus bubalis, prevalence, ticks Department of Parasitology, College of Veterinary Sciences and Animal Husbandry, U. P. Pandit Deen Dayal Upadhyaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go Anusandhan Sansthan (DUVASU), Mathura, India, *E-mail: viks.sudan@gmail.com 2 Department of Pathology, College of Veterinary Sciences and Animal Husbandry, U. P. Pandit Deen Dayal Upadhyaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go Anusandhan Sansthan (DUVASU), Mathura, India 1 21 Buffalo Bulletin (March 2015) Vol.34 No.1 the season wise prevalence are given in Graphs 1 and 2, respectively. During the study of age-wise tick infestation, overall maximum percentages of positive cases (74.17%) were noticed in the group I (up to 1 year) followed by 60.93 % in group II (1–3 years) and minimum tick infestation (36.33%) was observed in group III (> 3 years) (Graph 3). During the study period, ixodid ticks belonging — Hyalomma anatolicum anatolicum and Boophilus microplus were recorded both in pure and mixed infestation in different seasons (Figure 1). Hyalomma spp. infestation was observed in 294 buffaloes (46.29%) examined for tick infestation. Pure infestation of Hyalomma spp. was seen in 245 buffaloes (38.58%) and mixed with Boophilus spp. in 49 (7.71%) cases. Pure Boophilus spp. infestation was seen in 84 buffaloes (13.23%). Besides these, H. marginatum issaci and H. dromedarii were also collected from some of the buffaloes. The most common feeding sites for adult ticks were neck, axilla, belly, groin, udder, perineal regions and tail (Figure 2, 3). During study period, a total of 635 buffaloes were examined from different localities of Mathura district for the presence of ixodid ticks and their prevalence was found out to be 51.81%. Contrary to this, Mishra (1984); Sharma (1984); Kumar (1996) and Vatsya et al. (2007) had earlier reported that prevalence of ixodid ticks in buffaloes to be 61.0%, 33.50% and 38.06% respectively, from various agro climatic regimes across India. Difference among the results might be due to variation in geographical locations, climatic conditions of the experimental area, region and method of study and selection of samples (Patel et al., 2012). Month wise prevalence of ticks in buffaloes was found maximum in September (69.09%) and minimum in the month of January (37.74%). The difference in tick infestation in different month was literature seems restricted to finger tips. Therefore, the present study was undertaken to know the prevalence of ticks in relation to the different month of the year, different seasons of the year, age of the animals, sites of their attachment and identification of ticks up to species level. MATERIALS AND METHODS Area of study Systematic survey on ixodid ticks of buffaloes was undertaken at various locations of Mathura district (Uttar Pradesh, India) during the period from July 2010 to June 2011. The selected areas were visited once a week to determine the seasonal pattern of tick infestation and to observe variation in prevalence of tick infestation with respect of host (age, species) and environmental determinants. Collection and identification of ixodid ticks The adult ticks were gently plucked up from the body of the host by hand manipulation or with the aid of blunt pointed forceps without damaging their mouth parts. The specimens were kept in separate plastic containers and the date, host, age, locality and site of collection were entered on the label of each container. These samples were transported to the laboratory for further studies and identification using standard keys (Sen and Fletcher, 1962; Walker et al., 2003). RESULTS AND DISCUSSION The overall prevalence of ticks during the study period was found to be 51.81%. The month wise prevalence of ticks throughout the year and 22 Buffalo Bulletin (March 2015) Vol.34 No.1 Graph 1. Month wise variation in the prevalence of ticks. Graph 2. Season wise variation in prevalence of ticks. 23 Buffalo Bulletin (March 2015) Vol.34 No.1 Graph 3. Age wise variation in prevalence of ticks. may be due to the change in the climatic condition. The present study revealed that the prevalence rate of ticks is highest in rainy season (61.14%) followed by summer (50.95%) and least in winter season (43.46%). Although the animals were infested with ticks throughout the year but their number increased following rains. Thus, rainfall (humidity) seemed to be an important macroclimatic factor influencing seasonal variation in tick infestation (Vatsya et al., 2007). The decrease infestation rates during extreme winters in the month of December, January and February was sup-positively due to the drop in the temperature (13.02oC). At low temperature ticks (36.33%). Lower rate of tick infestations in adults could be attributed to acquired resistance incidental to repeatedly exposed of host to low grade field infestations during the prolonged growth and development period (Mishra,1984; Das, 1994). It is important to note that the cattle are mostly infested with Boophilus spp., while buffaloes are mostly infested with Hyalomma spp. (Papadopoulos et al., 1996; Patel et al., 2012). Buffaloes have less dense hair coat and have access to mud for wallowing which might cause dropping of ticks and hence less infested with Boophilus spp. (Khan, 1986). In present study, four species of ticks were identified as B. microplus, H. a. anatolicum, H. dromedari and H. marginatus issaci. Pure Hyalomma spp. infestation was found to be 38.58% and pure Boophilus species infestation was 5.51%. Aberrant infestation with H. dromedarii (a camel tick) and. H. marginatus issaci (a small ruminant tick) might be attributed to frequent contact of buffaloes and grazing on forest land having free access of camels and small ruminants (Chhabra et al., 1983). try to protect themselves by entering in diapauses leading to delayed morphogenesis and reduced behavioural activities (Gray, 1991; Denlinger, 1985). The infestation rate of ticks was found maximum in group I animals consisting of young ones below 1 year of age (74.17%) followed by group II animals consisting of between 1-3 years of age (60.93%) and minimum in group III animals consisting of animals of more than 3 years of age 24 Buffalo Bulletin (March 2015) Vol.34 No.1 a) B. microplus (anterior end) b) B. microplus (posterior end) d) H. anatolicum anatolicum (posterior end) c) H. anatolicum anatolicum (anterior end) e) H. marginatum issaci (anterior end) f) H. marginatum issaci (posterior end) g) H. dromedarii (anterior end) h) H. dromedarii (posterior end) Figure 1. Various species of ticks on buffaloes identified in the present study. 25 Buffalo Bulletin (March 2015) Vol.34 No.1 Figure 2. Buffalo calf infested with ticks. Figure 3. Tail of buffalo infested with ticks. 26 Buffalo Bulletin (March 2015) Vol.34 No.1 Denlinger, D. 1985. Hormonal control of diapause, p. 353-412. In Kerkutt, G.A. and L.I. Gilbert (eds.) Comprehensive Insect Physiol., Biochemistry and Pharmacol. Vol. 8. New York Pergamon Press. F.A.O. 2004. Resistance Management and Integrated Parasite control in Ruminants- Guidelines, Module I- Ticks: Acaricide Resistance: Diagnosis, Management and Prevention. Food and Agriculture Organization, Animal Production and Health Division, Rome: 2577. Gray, J.S. 1991. The development and seasonal activity of the tick Ixodes ricinus: A vector of Lyme borreliosis. Med. Vet. Entomol., 79: 323-333. Kumar, R. 1996. Studies on tick infestations in cattle and buffaloes. M.V.Sc. Thesis, C.S.A. University of Agriculture and Technology Kanpur, (U.P.). p. 1-178. Minjauw, B. and A. McLeod. 2003. Tick-borne diseases and poverty. The impact of ticks and tick born diseases on the livelihood of small scale and marginal livestock owners in India and eastern and southern Africa. Research Report, DFID Animal Health Programme, Centre for Tropical Veterinary Medicine, University of Edinburg, UK. Mishra, S.C. 1984. A note on the incidence and control of ixodid ticks at Bhubaneswar. Cheiron, 13(1): 5-8. Papadopoulos, B., P.C. Morel and A. Aeschlimann 1996. Ticks of domestic animals in the Macedonia region of Greece. Vet. Parasitol., 63(1/2): 25-40. Patel, G., D. Shanker, A.K. Jaiswal, V. Sudan and S.K. Verma. 2012. Prevalence and seasonal variation in ixodid ticks on cattle of Mathura district, Uttar Pradesh. J. Parasit. Dis., DOI In conclusion, management practices and animal holdings influence the tick infestations on the body of the host. Evidently, in tropics and sub tropics, distribution of ixodid ticks is mainly governed by the rainfall and precipitation. Effective ixodid tick control strategies ought to be mainly focused upon the seasonal periodicity of the dominant tick species and their susceptibility to the acaricide, based on in vitro testing, to minimize production losses incidental to ixodid tick infestations, besides scientific management of grazing lands and other strategies most suited in the endemic areas of ambient temperature and rainfall request to be evolved. ACKNOWLEDGMENT The authors are very grateful to Hon’ble Vice Chancellor DUVASU for making the facilities available. REFERENCES Bianchin, I., J.B. Catto, A.N. Kichel Torres and M.R. Honer 2007. Effect of the control of endo and ectoparasites on weight gains in crossbred cattle (Bos Taurus taurus× Bos Taurus indicus) in the central region of brazil. Trop. Anim. Health Pro., 39(4): 287296. Chhabra, M.B., N.S. Ruprah and S.K. Gupta. 1983. Ixodid ticks on bovines in Haryana- A preliminary report. Cherion, 12: 298-303. Das, S.S. 1994. Prevalence of ixodid ticks infestation on farm animals in Pantnagar, tarai of Uttar Pradesh. J. Parasit. Appl. Anim. Biol., 3: 71- 73. 27 Buffalo Bulletin (March 2015) Vol.34 No.1 10.1007/s12639-012-0154-8. Sen, S.K. and T.B. Fletcher 1962. Veterinary Entomology and Acarology for India. Indian council of Agricultural Research, New Delhi. Soulsby, E.J.L. 2006. Helminths, Arthropods and th Protozoa of Domesticated Animals, 7 ed. Bailliere Tindall and Cassel Ltd., London. p. 444-475. Vatsya, S., C.L. Yadav, R.R. Kumar and R. Garg. 2007. Seasonal activity of Boophilus microplus on large ruminants at an organised livestock farm. J. Vet. Parasitol., 21(2): 125-128. Walker, A.R., A. Bouattour, J.L. Camicas, A. Estrada Pena, I.G. Horak, A.A. Latif, R.G. Pegram and P.M. Preston. 2003. Ticks of Domestic Animals in Africa: A Guide to Identification of Species. Bioscience Reports. 221p. 28 Buffalo Bulletin (March 2015) Vol.34 No.1 Original Article SEDATIVE, ANALGESIC AND CARDIOPULMONARY EFFECTS OF MIDAZOLAMBUTORPHANOL PREMEDICATION IN WATER BUFFALOES (BUBALUS BUBALIS) Deepti Bodh1,*, Kiranjeet Singh1, Jitender Mohindroo2, Sashi Kant Mahajan2 and Narinder Singh Saini2 ABSTRACT in water buffaloes as this combination provided adequate sedation, analgesia and muscle relaxation with only transient changes in cardiopulmonary parameters. The study was conducted in 12 water buffaloes of either sex, aged 3 to 8 years and weighing 400-500 kg, to evaluate and compare the sedative, analgesic and cardiopulmonary effects of intravenous midazolam-butorphanol combination with midazolam. Animals were randomly divided into two groups: Group I (midazolam) and group II (midazolam-butorphanol) having six animals in each group. Midazolam (0.2 mg/kg, i.v.) in group I and midazolam-butorphanol (0.2 mg/kg and 0.02 mg/kg, i.v.) combination in group II was used for premedication. Thiopentone sodium (5%) (10 mg/ kg, i.v) was used as induction agent in both the groups. Better degree of sedation, analgesia and muscle relaxation was observed in midazolambutorphanol group. Heart rate decreased significantly after premedication in midazolambutorphanol group. Respiratory rate decreased nonsignificantly while rectal temperature decreased significantly (p<0.01) after premedication in both the groups. Halothane concentration required to maintain adequate depth of anaesthesia was lower in midazolam-butorphanol group. The results showed that midazolam-butorphanol combination (0.2 mg/kg and 0.02 mg/kg) can be used safely for premedication during halothane anaesthesia Keywords: midazolam, butorphanol, halothane, thiopentone sodium, water buffaloes INTRODUCTION Use of sedatives before induction of anaesthesia is well established in veterinary practice. Preoperative use of sedatives improve the quality of induction and decrease drug related adverse effects by reducing the amount of injectable and inhalant anaesthetics (Kojima et al., 2002; Sano et al., 2003). Midazolam has mild cardiovascular and respiratory effects and is commonly used as a mild tranquillizer, muscle relaxant and anticonvulsant (Lemke, 2007). It has supra-additive effect with opioids and barbiturates. The combined effect of barbiturate and benzodiazepine is mediated through benzobarbiturate-GABA receptor supramolecular complex in which each site when occupied modulates the other (Tverskoy et al., 1988; Vinik et al., 1994). Butorphanol, an opioid agonistantagonist has good analgesic, antitussive and 1 Division of Surgery, Indian Veterinary Research Institute, Izatnagar, Uttar Pradesh, India, *E-mail: deeptibodh@yahoo.in; dips.vet@gmail.com 2 Department of Veterinary Surgery and Radiology, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, Punjab, India 29 Buffalo Bulletin (March 2015) Vol.34 No.1 with the help of pulse oxymeter. Systolic, diastolic and mean arterial pressure was measured with the help of non-invasive blood pressure (NIBP) monitor whose cuff was applied around the base of tail. The degree of sedation, analgesia and muscle relaxation was graded on 1 to 4 scoring scale. Onset of sedation was recorded by observing behavioural changes after premedication and was graded as: 1 (no sedation) = animal standing alert with its head high and all reflexes present, 2 (mild sedation) = decreased alertness with no reduction in palpebral and pin prick reflexes; 3 (moderate sedation) = animal calm, minimal restraint needed, eyelids partially closed, sluggish palpebral reflex and partial ventromedial rotation of eye; 4 (deep sedation) = animal completely calm, no restraint needed, eyelids closed, very weak palpebral reflex, complete ventromedial rotation of eye. The quality of induction was evaluated five min after administration of thiopentone sodium and was graded as 1 (poor) = animal excited, frequent attempts to stand after recumbency, massive regurgitation and inability to intubate trachea; 2 (moderate) = mild excitement, mild regurgitation, slightly longer tracheal intubation time and slightly prolonged induction; 3 (good) = no excitement, no regurgitation, no gag reflex, 4 (excellent) = smooth and rapid induction, easy and quick tracheal intubation, no regurgitation. Quality of analgesia was recorded by observing animal’s response to deep pin prick with a 22 G hypodermic needle at every 15 minutes interval. Analgesia was graded as 1 (no analgesia) = strong response to pin prick; 2 (mild analgesia) = weak response to pin prick; 3 (Moderate analgesia) = occasional response to pin prick; 4 (Excellent analgesia) = no response to pin prick. Extent of muscle relaxation was recorded sedative effect (Pfeffer et al., 1980). It induces only mild sedation and has minimum adverse effects to the cardiovascular system (Greene et al., 1990; Trim, 1983). There are only few reports available on the use of midazolam-butorphanol combination as preanaesthetic in water buffaloes. The present study was therefore, designed to evaluate the sedative, analgesic and cardiopulmonary effects of midazolam-butorphanol combination in water buffaloes. MATERIALS AND METHODS The study was conducted in 12 water buffaloes of either sex, aged 3-8 years and weighing 400-500kg. Buffaloes were randomly divided into two groups: group I (M) and group II (MB) having 6 animals in each group. All buffaloes were kept off feed for 24 h and water was withheld for 12 h prior to onset of anaesthesia. Different surgical procedures like ventral hernia (n=3), plating (n=3), diaphragmatic hernia (n=3), prepubic tendon rupture repair (n=2), excision of large tumorous mass on neck (n=1) were performed with buffaloes restrained either in lateral or dorsal recumbency. Midazolam (0.2 mg/kg i.v.) in group I (M) and midazolam (0.2 mg/kg, i.v.) + butorphanol (0.02mg/kg, i.v.) combination mixed in a single syringe in group II (MB) was used for premedication. Thiopentone sodium (5%) was used as induction agent in both the groups. Following induction, jaw was opened using a mouth gag and endotracheal intubation was performed. Anaesthesia was maintained with halothane and oxygen mixture via a semi-closed rebreathing system. The vaporizer setting was adjusted according to depth of anaesthesia after monitoring animal’s response to various reflexes. Haemoglobin oxygen saturation value was obtained 30 Buffalo Bulletin (March 2015) Vol.34 No.1 between the two groups. Paired‘t’ test was used to compare the means at different intervals with their respective base values in each group. For non parametric observations the Kruskal-Wallis one way test (Stiegel and Castellan, 1988) was used to compare the means between the two groups. by observing relaxation of muscles of limb, jaw and tail and was graded as: 1 (no relaxation) = tightly closed jaws and stiff limbs; 2 (mild relaxation) = moderate resistance to opening of jaw and bending of limbs; 3: moderate relaxation (mild resistance to opening of jaw and bending of limbs; 4 (good relaxation) = no resistance to opening of the jaw and bending of the limbs. The degree of abolition of palpebral, corneal, pin prick and rectal pinch reflex was graded as: 1 (intact and strong reflex); 2 (mildly depressed reflex); 3 (sluggish reflex); 4 (complete loss of reflex). The extent of salivation was graded as 1 (no salivation); 2 (mild salivation); 3 (moderate salivation); 4 (profuse salivation). Quality of recovery was graded as 1 (poor) = prolonged struggling, premature attempts to stand; 2 (moderate) = transient excitement along with some struggling; 3 (good) = smooth, easy transition to alertness, resumption of sternal position, 4 (excellent) = smooth, excitement free, animal standing of its own. Physiological parameters like heart rate (HR) (beats/min), respiratory rate (RR) (breaths/ minute) and rectal temperature (RT) (ºC) was recorded at base i.e. 0 minute, 5 minutes after premedication and at 5, 15, 30, 45, 60, 90 and 120 minutes after induction of anaesthesia. Haemodynamic parameters like systolic blood pressure (SBP) (mm of Hg), diastolic blood pressure (DBP) (mm of Hg), mean arterial pressure (MAP) (mm of Hg) and haemoglobin oxygen saturation (SpO2) (%) were recorded at the above time interval in both the groups. RESULTS AND DISCUSSION The study was conducted to evaluate and compare the sedative, analgesic and cardiopulmonary effects of midazolam-butorphanol combination with midazolam in water buffaloes. Addition of butorphanol to midazolam brought about clinically appreciable changes in sedation, analgesia and muscle relaxation without any adverse effects on cardiopulmonary parameters. The quality of sedation was better in group II (MB) as compared to group I (M) and the difference between two groups was statistically significant (p<0.05). Mean sedation scores of 2.75±0.40 and 3.75±0.25 were reported in group I (M) and II (MB), respectively. In group I, out of six buffaloes, two gained score 4, three scored 3 and remaining one scored 2 while in group II(MB), out of six buffaloes, four gained score of 4 and remaining two scored 3 (Figure 1). Signs of sedation appeared early in buffaloes of group II (MB) (30 sec to 1 minute) as compared to group I (M) (1 to 2 minutes). Excitement immediately after premedication was observed in 2 buffaloes belonging to group I (M) while none of the buffaloes in group II (MB) showed any signs of excitement. Better sedation produced by midazolam (0.2 mg/kg b.wt.) + butorphanol (0.02 mg/kg b.wt.) combination in group II (MB) might be due to combined sedative effect of both the drugs. Midazolam as a single agent has a mild sedative effect but it shows additive or synergistic Statistical Analysis Analysis of variance (ANOVA) and Duncan’s multiple range test (DMRT) was used to compare the means at different time intervals 31 Buffalo Bulletin (March 2015) Vol.34 No.1 activity when administered with other sedatives (Cwiek et al., 2009).The analgesic and sedative effect of butorphanol is due to two subtypes of μ receptors: μ1-receptors that act above the level of the spinal cord, and μ2-receptors that act within the spinal cord (Boothe, 2001). Moderate quality of induction was observed in buffaloes of group I (M), with a mean induction score of 3.25 ± 0.25. In group II (MB), the quality of induction was good, with mean induction score of 3.75 ± 0.25 (Figure 2). Laryngeal reflex diminished early in group II (MB) and the time taken for endotracheal intubation was (MB) as compared to group I (M). Analgesia with complete abolition rectal pinch reflex for longer duration was observed in buffaloes of group II (MB) as compared to group I (M) (Figure 5). Midazolam does not have analgesic property, however addition of μ opioid agonist butorphanol in group II (MB) might have resulted in deeper and adequate level of analgesia (Pfeffer et al., 1980). Midazolam is found to have a considerable effect on the nociceptive transmission in superficial dorsal horn (Kohno et al., 2006) and cause pain relief (Akhlaghi and Rajaei, 2008). Similar findings were reported by Itamoto et al. (2000) in dogs, where addition of 0.1 significantly (p<0.05) less in group II (MB) (26.25 ± 1.75) as compared to group I (M) (30.00 ± 3.39). A synergistic interaction between midazolam and butorphanol could be responsible for the abolition of laryngeal reflex and better conditions for endotracheal intubation in group II (MB). Similar synergism between opioid and midazolam was observed in humans (Ben Shlomo et al., 1990) and animals (Kissin et al., 1986). Significant (p<0.05) increase in the score for palpebral reflex was observed after premedication in group II (MB) while in group I (M), the increase was non-significant (Figure 4). A non-significant increase in the score for corneal reflex followed by a significant (p<0.05) increase in the score for rotation of eyeball was observed within 5 minutes of preanaesthetic administration in both the groups. Moderate abolition of palpebral and corneal reflex observed after premedication in both groups was found similar to the observations of Kaur and Singh (2004) who reported loss of eyelash reflex, mild to moderate palpebral reflex and full corneal reflex after midazolam administration (0.2 mg/kg i.v.) in bovines. Completely ventral and ventromedial rotation of eyeball for a longer duration was observed in buffaloes of group II mg/kg butorphanol to medetomidine or midazolam produced adequate analgesic effect. The extent of muscle relaxation was assessed by relaxation of jaw tone and limbs, respectively. The score for limb relaxation increased significantly (p<0.05) in group II(MB) compared to a non-significant (p>0.05) increase in group I(M) (Figure 6). Better degree of muscle relaxation observed in buffaloes of group II (MB) might be attributed to the synergistic interaction between midazolam and butorphanol. Midazolam is a benzodiazepine derivative known to have good muscle relaxant action (Hellyer et al., 1991; Ilkew et al., 1998). Although, opioids by themselves do not induce muscle relaxation, however, their additive or synergistic interaction with benzodiazepine might have caused enhanced muscle relaxation in buffaloes of group II (MB). No statistically significant (p>0.05) difference between the two groups regarding degree of salivation was reported. However, salivation was moderate following midazolam administration in group I (M) while it was mild after midazolambutorphanolpremedication in group II (MB). Court and Greenbalt (1992) and Butola and Singh (2007) reported similar findings in dogs where drooling 32 Buffalo Bulletin (March 2015) Vol.34 No.1 during maintainence period in both groups may be attributed to the hypotensive effect of halothane. Similar observation was reported in cattle (Short et al., 1968) and buffaloes (Gahlawat et al., 1986). No significant difference in respiratory rate was observed after premedication in both the groups. Significant (p<0.01) hypoxemia observed after induction in both the groups might be due to the respiratory depressant effect of thiopentone sodium, as the barbiturates can cause significant cardiovascular and respiratory depression (Carpenter et al., 2005). Respiratory rate decreased nonsignificantly after premedication followed by a significant (p<0.01) decrease after induction in buffaloes of both the groups (Figure 9). Rectal temperature decreased significantly (p<0.05) after midazolam butorphanol premedication in group II (MB) while in group I (M), the decrease was non-significant (Figure 10). Reduced muscle activity along with deep sedation induced by midazolam-butorphanol combination in group II (MB) might have led to the decrease in rectal temperature in this group. Significant (p<0.05) hypothermia observed after induction and throughout maintainence period in both the groups could be due to reduced basal metabolic rate and muscle activity on one hand and depression of thermoregulation on the other which might have resulted in hypothermia (Ponder and Clarke, 1980). A non significant decrease in blood pressure was recorded after premedication in both the groups while after induction and during maintenance, blood pressure was found to decrease significantly (p<0.05) at few intervals in both the groups (Figure 11). However, in both the groups hypotension was a consistent finding during maintainence with halothane and the severity of saliva was seen after midazolam administration. Opioids, on the other hand decrease the production of saliva in mouth and this may explain for mild salivation reported after midazolam butorphanol premedication in group II (MB). Significant (p<0.01) difference in the amount of halothane used was observed between the two groups. Halothane concentration required to maintain adequate depth of anaesthesia was 3.25 ±0.50 % and 2.75 ±0.25 % in group I(M) and group II (MB), respectively (Figure 7). More halothane sparing effect of midazolam butorphanol combination in group II (MB) might be due combined analgesic and/or sedative effects of both the drugs. Midazolam decreases the MAC of potent inhaled anesthetics in humans (Inagaki et al.,1993) and animals (Hall et al., 1988). Studies in humans suggested that midazolam produced marked reduction of halothane MAC at serum concentration lower than that required to cause sleep (Inagaki et al., 1993). A plasma midazolam concentration of 539 ng mL-1 reduced halothane MAC by up to 70% in the same study. Heart rate decreased significantly (p<0.05) after midazolam-butorphanol administration in group II (MB) while in group I (M), the decrease in heart rate was non-significant (Figure 8). Midazolam has minimal cardiovascular depressant effects (Gross et al., 1990; Tranquilli et al., 1991) and although butorphanol posses less cardiovascular effect than classical opiate agonists, it can cause a decrease in cardiac rate secondary to increased parasympathetic tone and mild decrease in arterial blood pressure (Taylor et al., 1988). Decrease in heart rate after thiopentone administration in both groups of the present study supported the findings in buffaloes administered with thiopentone sodium and glyceryl guiacolate (Agrawal et al., 1983). Significant (p<0.05) decrease in heart rate observed 33 Buffalo Bulletin (March 2015) Vol.34 No.1 of Teaching Veterinary Clinical Complex, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana (Punjab), India for providing the facilities of Diagonostic Clinical Complex. We would also like to thank Dr. Ravi, Senior Scientist, Department of Biotechnology, Indian Veterinary Research Institute, Izatnagar, Uttar Pradesh, India and Dr. Samita, Associate Professor, Department of Biostatistics, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana (Punjab), India for their great help in statistical analysis. of hypotension was closely related to the depth of anaesthesia. Similar hypotensive effect of halothane has also been demonstrated in cattle (Short et al., 1968), dogs (Steffey et al., 1975) and horses (Smith, 1969).Significant (p<0.05) decrease in SpO2 after premedication in group II (MB) might be due to the respiratory depression caused by the combined effect of sedatives used. A decrease in SpO2 value after medetomidine and butorphanol anaesthesia was noticed in buffalo calves (Malik, 2008; Ahmed, 2009). Decrease in SpO2 at few intervals was observed after induction in both the groups (Figure 12). However, at other intervals, decrease in SpO2 was only transient and was fairly Declaration A prospective, randomized, blinded study protocol was used and was approved by the State Veterinary Authorities and informed consent was obtained from the owners. The experiments performed comply with the current laws of the country. maintained throughout most of the observation period. The scores for recovery quality in buffaloes of group I (M) and group (MB) were 3.75±0.25 and 3.25±0.25, respectively. No statistically significant difference in the time of recovery was observed between the two groups. The results showed that the combination of midazolam with butorphanol (0.2 mg/kg and 0.02 mg/kg) for the purpose of premedication in water buffaloes induces high-quality sedation, analgesia and muscle relaxation.The combination considerably reduces the amount of inhalant anaesthetics used and produces transient changes in cardiopulmonary parameters. Midazolambutorphanol combination can be used safely for premedication during halothane anaesthesia in water buffaloes. REFERENCES Agrawal, K.B, B. Prashad and V.K. Sobti. 1983. Physiological and biochemical effects of glyceryl guaiacolate-thiopentone sodium anaesthesia in buffalo calves. Indian J. Vet. Surg., 4: 64-69. Ahmed, R. 2009. Evaluation of halothane anaesthesia following induction with propofol or thiopental in acepromazine/ medetomidine-butorphanol premedicated buffaloes. M.V.Sc. Thesis, Deemed University, IVRI, Izatnagar, India. Akhlaghi, M. and M. Rajaei. 2008. The effect of intramuscular midazolam on postoperative pain resulting from herniorraphy. J. Med. Sci., 8: 302-305. Ben-Shlomo, I., H. abd-el-Khalim, J. Ezry, S. Zohar AKNOWLEDGEMENTS The authors are grateful to Dr. S. K. Uppal, Professor, Department of Veterinary Medicene and Dr. S. Prabhakar, Professor-cum-head, Department 34 Buffalo Bulletin (March 2015) Vol.34 No.1 Figure 1. Mean ± SE of score for sedation quality in group I (M) and group II (MB). Figure 2. Mean ± SE of score for induction quality in group I (M) and group II (MB). Figure 3. Mean ± SE of score for Intubation time in group I (M) and group II (MB). 35 Buffalo Bulletin (March 2015) Vol.34 No.1 Figure 4. Mean ± SE of score for palpebral reflex in group I (M) and group II (MB). Figure 5. Mean ± SE of score for rectal pinch reflex in group I (M) and group II (MB). Figure 6. Mean ± SE of score for limb relaxation in group I (M) and group II (MB). 36 Buffalo Bulletin (March 2015) Vol.34 No.1 Figure 7. Mean ± S.E. of halothane (%) used at various intervals group I (M) and group II (MB). Figure 8. Mean ± SE of heart rate (beats/min) at different time intervals in group I (M) and group II (MB). Figure 9. Mean ± SE of respiratory rate (breaths/min) in group I (M) and group II (MB). 37 Buffalo Bulletin (March 2015) Vol.34 No.1 Figure 10. Mean ± SE of rectal temperature (°C) in group I (M) and group II (MB). Figure 11. Mean ± SE of mean arterial pressure (mm Hg) in group I (M) and group II (MB). Figure 12. Mean ± SE of hemoglobin oxygen saturation (mm Hg) in group I (M) and group II (MB). 38 Buffalo Bulletin (March 2015) Vol.34 No.1 and M. Tverskoy. 1990. Midazolam acts synergistically with fentanyl for induction of anaesthesia. Brit. J. Anaesth., 64: 45-47. 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Evaluation of halothane anaesthesia with and without thiopentone sodium induction in spontaneously ventilating buffalo calves. Arch. Exper. Vet. Med. Leipzig., 40: 861-869. Greene, S.A, S.M. Hartsfield and C.L.Tyner. 1990. Cardiovascular effects of butorphanol in halothane anesthetised dogs. Am. J. Vet. Res., 8: 1276-1279. Gross, M.E., W.J. Tranquilli, J.C. Thurmon, G.J. Benson, W.A. Olson. 1990. Haemodynamic effects of intravenous midazolam-xylazine- butorphanol in dogs. Vet Surg., 19: 173180. Hall, R.I., I.M. Schwieger, C.C. Jr. Hug. 1988. The anesthetic efficacy of midazolam in the enflurane-anesthetized dog. Anesthesiology, 68(6): 862-866. Hellyer, P.W., L.C. Freeman and J.A. Hubbell. 1991. Induction of anesthesia with diazepamketamine and midazolam-ketamine in greyhounds. Vet. Surg., 20:143-147. Ilkew, J.E., C. Suter, D. McNeal, T.B. Farver and E.P. Steffey. 1998. The optimal intravenous dose of midazolam after intravenous ketamine in healthy awake cats. J. Vet. Pharmacol. Ther., 21: 54-61. Inagaki, Y., K. Sumikawa and I. Yoshiya. 1993. Anaesthetic interaction between midazolam and halothane in humans. Anaesth. Analg., 76: 613-617. Itamoto, K., Y. Hikasa, T. Sakonjyu, H. Hito, T. Takuta and K. Takase. 2000. Anaesthetic and cardiopulmonary effects of balanced anaesthesia with medetomidine, midazolam and butorphanol in dogs. J. Vet. Med. Sci., 47: 411-420. Kaur, A. and S.S. Singh. 2004. Clinical effects of midazolam-ketamine and midazolamthiopentone anaesthesia in bovines. Indian J. Vet. Surg., 25: 80-82. Kissin, I., J.O. III Mason and E.L. Jr. Bradley. 1986. Morphine and fentanyl interactions with thiopental in relation to movement response to noxious stimulation. Anesth. Analg., 65: 1149-1154. Kohno, T., A. Wakai, T. Ataka, M. Ikoma, T. Yamakura and H. Baba. 2006. Actions of midazolam on excitatory transmission in dorsal horn neurons of adult rat spinal cord. Anesthesiology, 104: 338-343. 39 Buffalo Bulletin (March 2015) Vol.34 No.1 effects of halothane and halothane nitrous oxide anaesthesia in dogs: Spontaneous ventilation. Am. J. Vet. Res., 36: 197-200. Stiegel, S. and J.J. Castellan. 1988. Non Parametric Statistics for Behavioural Sciences. Mc Graw Hill, Singapore. Taylor, P.M., A.P. Browning and C.P. Harris. 1988. Detomidine – butorphanol sedation in equine clinical practice. Vet. Rec., 123: 388390. Thurmon, J.C., W.J. Tranquilli and G.J. Benson. 1996. Lumb and Jone’s Veterinary Anaesthesia, 3rd ed. Willium and Wilkins, USA. Tranquilli, W. J., M.E. Gross and J. Thurmon. 1991. Evualation of three midazolam xylazine mixtures: preliminary trials in dogs. Vet. Surg., 19: 168-172. Trim, C.M. 1983. Cardiopulmonary effects of butorphanol tartrate in dogs. Am. J. Vet. Res., 44: 329-331. Tverskoy, M., G. Fleyshman, E.L. Jr. Bradley and I. Kissin. 1988. Midazolam thiopental anaesthetic interaction in patients. Anaesth. Analg., 67: 342-345. Vinik, H.R, E.L. Bradley and I. Kissin. 1994. Triple anaesthetic combination: Propofolmidazolam-alfentanil. Anaesth. Analg., 78: 354-358. Kojima, K., R. Nishimura, T. Mutoh , S.H. Hong, M. Mochizuki and N. Sasaki. 2002. Effects of medetomidine-midazolam, acepromazinebutorphanol, and midazolam-butorphanol on induction dose of thiopental and propofol and on cardiopulmonary changes in dogs. Am. J. Vet. Res., 63: 1671-1679. Lemke, K.A. 2007. Anticholenergics and sedatives, p. 203-239. In Tranquilli, W.J., J.C. Thurmon and K.A. Grimm (eds.) Lumb and Jones Veterinary Anesthesia and Analgesia, 4th ed. Wiley/Blackwell Publishing Ltd., Oxford. Malik, V. 2008. Standardization of propofol and ketamine for constant rate infusion and their comparative evaluation with halothane anaesthesia in buffaloes. Ph. D. Thesis, Deemed University, IVRI, Izatnagar (UP), India. Pfeffer, M., R.D. Smyth, K.A. Pittman and P.A. Nardella. 1980. Pharmacokinetics of subcutaneous and intramuscular butorphanol in dogs. J. Pharm. Sci., 69: 801-803. Ponder, S.W. and W.G. Clarke. 1980. Prolonged depression of thermoregulation after xylazine administration to cats. J Vet. Pharmacol. Ther., 3: 203-207. Sano, T., R. Nishimura, M. Mochizuki and N. Sasaki. 2003. Effects of midazolambutorphanol, acepromazine-butorphanol and medetomidine on an induction dose of propofol and their compatibility in dogs. J. Vet. Med., 65: 1141-1143. Short, C.E., A.S. Keats, D. Liotta and C.W. Hall. 1968. Anaesthesia for cardiac surgery in calves. Am. J. Vet. Res., 29: 2287-2294. Smith, M. 1969. Indirect measurement of blood pressure. Nord. Vet. Med., 21: 312. Steffey, E.P., J.R. Gillespie, J.D. Berry, E.J Eger and E.A. Rhode. 1975. Circulatory 40 Buffalo Bulletin (March 2015) Vol.34 No.1 Original Article PREVALENCE AND ANTIBIOGRAM OF BACTERIAL PATHOGENS FROM SUBCLINICAL MASTITIS IN BUFFALOES Z. Ali, U. Dimri and R. Jhambh* may reduce the chances of treatment failure and the economic losses. ABSTRACT The present investigation was carried out to study the prevalence of bacterial pathogens responsible for subclinical mastitis in buffaloes and their antibiogram pattern to selected antibiotics. The study was carried out on lactating buffaloes maintained at the Cattle and Buffalo farm, Indian Veterinary Research Institute, Izatnagar, India. Screening for subclinical mastitis was done by California Mastitis Test (CMT) and Somatic Cell Count (SCC) in milk. The buffaloes showing CMT score ≥ 2 and SCC ≥ 0.5 million/ml of milk were considered for isolation and identification of bacterial pathogens by cultural examination and requisite biochemical tests. Fifteen out of 48 lactating buffaloes were found positive for subclinical mastitis, affecting one or two quarters, giving a prevalence of 31.25%. Out of them, 9 (60%) were found positive for Staphylococcus aureus, 3 (20%) positive for Streptococcus agalactiae, 1 (7.69%) for other streptococci and 2 (13.33%) for E. coli. The antibiogram of the bacterial isolates to standard antibiotic discs determined by disc diffusion method revealed the highest sensitivity to ciprofloxacin and enrofloxacin followed by cefotaxime, cloxacillin, erythromycin, amoxycillin in decreasing order and least sensitivity to penicillin G. Judicious use of antibiotics based on antibiotic sensitivity and pharmacokinetics in mastitis control Keywords: antibiogram, bacterial pathogens, buffaloes, prevalence, subclinical mastitis INTRODUCTION Mastitis, defined as inflammation of the mammary gland, is a major disease affecting dairy animals worldwide. Based upon severity of the inflammation, it can be classified into sub-clinical, clinical and chronic forms. Out of which subclinical form as difficult to detect due to the absence of any visible indications has major cost implications associated with decreased milk production (Viguier et al., 2009). In India, annual economic loss to dairy industry due to subclinical mastitis is estimated to be Rs. 43653 million (Dua, 2001). It primarily occurs in response to intramammary bacterial infection (Zhao and Lacasse, 2008). Therefore, a bacteriological diagnosis, prevalence study in the herd and proper selection of antibiotic based on antibiotic sensitivity are critical for rational and effective control of mastitis. Based upon these facts, the present investigation was carried out to study the prevalence of bacterial pathogens responsible for subclinical mastitis in buffaloes and the antibiogram pattern of the isolates to selected Division of Medicine, Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, India, E-mail: jhambricky@gmail.com 41 Buffalo Bulletin (March 2015) Vol.34 No.1 factors such as herd size, milking parlor hygiene, variation in systems of feeding and management etc. Out of total 15 cases of subclinical mastitis, 9 (60%) were found positive for Staphylococcus aureus based on growth characteristics on Mannitol salt agar, 3 (20%) positive for Streptococcus agalactiae based on growth characteristics on Edward’s media and Hotis test, 1 (7.69%) for other streptococci and 2 (13.33%) for E. coli based on growth characteristics on MacConkey’s agar and EMB agar plates. The present study revealed a predominance of Staphylococcus aureus followed by Streptococcus agalactiae in subclinical mastitis in buffaloes, which is similar to the finding by Khan and Muhammad (2005). Staphylococcus aureus and Streptococcus agalactiae are the most common contagious pathogens of bovine mammary gland. S. aureus is a major pathogen responsible for subclinical mastitis (Radostits et al., 2007) while S. agalactiae is still a significant cause of chronic mastitis where control measures for contagious mastitis are not used (Keefe, 1997). Thus, the present study reveals the predominance of contagious form of subclinical mastitis at the farm that needs to be controlled with appropriate measures to prevent further spread. On the other hand, a low prevalence of subclinical mastitis due to E. coli and other streptococci infection which are considered environmental pathogens (Radostits et al., 2007) suggests the improved sanitation and hygienic practices at the farm. The antibiogram of the bacterial isolates revealed highest sensitivity to ciprofloxacin and enrofloxacin followed by cefotaxime, cloxacillin, erythromycin, amoxycillin in decreasing order and least sensitivity to penicillin G. Similar antibiogram pattern of bacterial isolates has been recorded by Awandkar et al. (2009) and Harini and Sumathi (2010) from bovine clinical and subclinical antibiotics. MATERIALS AND METHODS The present study was carried out on lactating buffaloes under different phases of lactation maintained at the Cattle and Buffalo farm, Indian Veterinary Research Institute, Izatnagar, India. Screening of the buffaloes for subclinical mastitis was done by estimation of Somatic Cell Count (SCC) in milk from individual quarters indirectly by California Mastitis Test (CMT) as per Schlam and Noorlander (1957) and directly as per Schlam et al. (1971). The buffaloes showing CMT score ≥ 2 and SCC ≥ 0.5 million/ml of milk were considered for isolation and identification of bacterial pathogens. Milk samples collected in sterile vials from affected quarters was subjected to bacterial isolation and identification by cultural examination and requisite biochemical tests by the method of Quinn et al. (2004). Further, the sensitivity of each bacterial isolate to standard antibiotic discs viz. penicillin (10 units/disc), amoxycillin (10 μg/disc), cloxacillin (30 μg/disc), erythromycin (15 μg/disc), ciprofloxacin (5 μg/ disc), enrofloxacin (10 μg/disc) and cefotaxime (10 μg/disc) was determined by disc diffusion method (Bauer et al., 1966). RESULTS AND DISCUSSION Out of 48 lactating buffaloes, 15 were found positive for subclinical mastitis affecting one or two quarters giving a prevalence of 31.25%. Joshi & Gokhle (2006) documented a lower (5 to 20%) prevalence of subclinical mastitis in buffaloes. Higher prevalence may be dependent on many 42 Buffalo Bulletin (March 2015) Vol.34 No.1 REFERENCES mastitis respectively. Poor sensitivity to penicillin G and amoxycillin may be due to production of β-lactamase enzyme by resistant strains of isolates owing to their frequent use at the farm for mastitis control. On the other hand, higher sensitivity to ciprofloxacin, enrofloxacin, cefotaxime might be explained on the basis of their less frequent use at the farm. Antimicrobial susceptibility determined in vitro has been considered as a prerequisite for treatment. However, activity in vitro does not guarantee efficacy in vivo as pharmacokinetics of the antimicrobial substance greatly affects its suitability for mastitis treatment (Pyöräla, 2009). Enrofloxacin is an antibacterial under class fluoroquinolones, exclusively developed for use in animals. Ciprofloxacin is a major, active metabolite of enrofloxacin formed by the de-ethylation of enrofloxacin. Both of them tend to be concentrated in milk of lactating animals (Idowu et al., 2010), so presents the potent options for management of subclinical mastitis in buffaloes. Awandkar, S.P., N.V. Khode, V.M. Sardar and M.S. Mendhe. 2009. Prevalence and current antibiogram trend of mastitic agents in Udgir and its Vicinity, Maharashtra State, India. Int. J. Dairy Sci., 4(3): 117-122. Bauer, A.W., W.M.M. Kieby, J.C. Shrenis and M. Turck. 1966. Antibiotic susceptibity testing by a standardized single disc diffusion method. Am. J. Clin. Pathol., 45: 453-496. Dua, K. 2001. Incidence, etiology and estimated economic losses due to mastitis in Punjab and in India- An update. Indian Dairyman, 53(10): 41-48. Harini, H. and B.R. Sumathi. 2010. Screening of bovine milk samples for sub-clinical mastitis and antibiogram of bacterial isolates. Vet. World, 4(8): 358-359. Idowu, O.R., J.O. Peggins, R. Cullison and J.V. Bredow. 2010. Comparative pharmacokinetics of enrofloxacin and ciprofloxacin in lactating dairy cows and beef steers following intravenous administration of enrofloxacin. Res. Vet. Sci., 89: 230-235. Joshi, S. and S. Gokhale. 2006. Status of mastitis as an emerging disease in improved and periurban dairy farms in India, Ann. N. Y. Acad. Sci., 1081: 74-83. Keefe, G.P. 1997. Streptococcus agalactiae mastitis: A review. Can. Vet. J., 38: 429-437. Khan, A.Z. and G. Muhammad. 2005. Quarterwise comparative prevalence of mastitis in buffaloes and crossbred cows. Pak. Vet. J., 25(1): 9-12. Pyöräla, S. 2009. Treatment of mastitis during lactation. Irish Vet. J., 62: 40-44. Quinn, P.J., M.E. Carter, B. Markey and G.R. Carter. 2004. Clinical Veterinary Microbiology, CONCLUSION The present study revealed a high prevalence of subclinical mastitis in lactating buffaloes with the predominance of Staphylococcus aureus followed by Streptococcus agalactiae which are the most common contagious pathogens of bovine mammary gland. The antibiogram revealed the highest sensitivity to ciprofloxacin and enrofloxacin followed by cefotaxime, cloxacillin, erythromycin, amoxycillin, penicillin G in decreasing order of sensitivity. Judicious use of antibiotics based on antibiotic sensitivity and pharmacokinetics in mastitis control may reduce the chances of treatment failure and the economic losses. 43 Buffalo Bulletin (March 2015) Vol.34 No.1 Mosby. Elsevier Limited, Philadelphia, USA. Radostits, O.M., D.C. Blood, C.C. Gay and P.D. Constable. 2007. Veterinary Medicine: Diseases of Cow, Buffalo, Horse, Sheep, Goat and Pig, 10th ed. Saunders Elsevier Limited, Philadelphia, USA. Schlam, O.W. and D.O. Noorlander. 1957. Experiments and observations leading to development of the California mastitis test. J. Am. Vet. Med. Assoc., 130: 199-204. Schlam, O.W., E.J. Carrol and N.C. Jain. 1971. Bovine Mastitis. Lea and Febiger, Philladelphia. p. 128-129. Viguier, C., S. Arora, N. Gilmartin, K. Welbeck and R. O’Kennedy. 2009. Mastitis detection: current trends and future perspectives. Trends Biotechnol., 27(8): 486-493. Zhao, X. and P. Lacasse. 2008. Mammary tissue damage during bovine mastitis: Causes and control. J. Anim. Sci., 86(1): 57-65. 44 Buffalo Bulletin (March 2015) Vol.34 No.1 Original Article MACRO AND MICRO MINERAL PROFILE IN FORAGE AND BLOOD PLASMA OF WATER BUFFALOES WITH RESPECT TO SEASONAL VARIATION Sushma Chhabra, S.N.S. Randhawa and S.D. Bhardwaj ABSTRACT INTRODUCTION The present study was carried out to assess the levels of some macro and micro minerals in blood plasma of water buffaloes and forage consumed by these ruminants in the central region of Punjab, India using apparently health animals during two consecutive seasons of the year. Blood plasma samples were obtained from the animals twice during each season, and analyzed for calcium, inorganic phosphorous, copper, inorganic iodine, zinc, manganese and iron levels. The results showed that concentrations of all the minerals studied in plasma were comparable in both the seasons with the exception of zinc and phosphorus which were significantly higher in winter. Analysis of forages collected showed that the variations in the fodder mineral concentrations corresponded to the plasma mineral variations, indicating a direct plant-animal relationship and showing the need of supplementation of the deficient minerals during summer season for these animals at the place where the livestock were being reared. Farm animals derive most of their mineral requirements from their feed and fodder. Therefore, all the factors that influence mineral content of the fodder determine the mineral intake of animals, especially the agro-climatic and environmental factors like climate, soil type, species and stage of maturity (Suttle, 2010) and the adequacy of the diet in essential minerals can be determined by analysis of animals’ plasma mineral status and of forages which are the sole sources of minerals for the requirements of the animals. Mineral imbalances have been established in many parts of Punjab, India (Singh, 2002), where intensive agricultural practices having been practiced for over decades but only fragmentary data is available concerning the mineral status of livestock and forages. There is need for information on this aspect, in which problems of mineral nutrition exist. The main objectives of this investigation were, therefore, to determine mineral imbalances and particularly to find out the effect of season on the levels of some essential minerals in forages and plasma of animals Keywords: buffaloes, minerals, profile, plasma, forage Department of Veterinary Medicine, College of Veterinary Science, Guru Angad Dev Veterinary and Animal Sciences University (GADVASU) , Ludhiana, Punjab, India 45 Buffalo Bulletin (March 2015) Vol.34 No.1 MATERIALS AND METHODS animals was collected, oven dried (overnight at 65ºC) and ground fodder samples were digested on hot plate with sulphuric acid and hydrogen peroxide and their mineral contents (Cu, Mn, Zn, Fe, Ca) were estimated by Atomic Absorption Spectrophotometer. Phosphorus content of fodder was estimated by Vanado molybdate phosphoric yellow colour method in nitric acid system using Spectronic-20. A base line survey on mineral (Ca, Pi, Zn, Cu, Fe, Mn and PII) status of dairy animals and fodder was conducted in a total of 67 dairy units of 29 villages of central Punjab during months of June in summer and January in winter. Average temperature during the experimental year was 38 ± 5ºC during summer and 14 ± 5ºC during winter. A total of 188 buffaloes were selected randomly without considering any health problem or mineral deficiency symptoms. Statistical analysis Statistical analysis of the data was done by method described by Singh et al. (1998). Chemical Analyses Blood Blood samples from 188 buffaloes were collected in sterile test tubes containing anticoagulant (heparin). The samples were centrifuged at 3000 rpm fro 30 minutes at room temperature to separate plasma. The plasma samples were stored in small aliquots in mineral free glass vials at -10º C until analysis. Two milliliters of plasma was digested with nitric acid and perchloric acid and after digestion the volume was made upto 10 ml with double distilled water for micro-mineral analysis, whereas plasma was used as such for Ca and Pi of estimations. Concentrations of various plasma minerals viz. Zn, Cu, Fe and Mn were measured by Atomic Absorption Spectrophotometer (SpectraAA 20 plus, Varian, Melbourne, Australia) and plasma Pi was estimated by method of Taussky and Shorr (1953). Plasma Ca was estimated by Autoanalyser using diagnostic reagent kits (Bayer Diagnostic India Ltd., Baroda) by cresolphthalein complexone method whereas plasma inorganic iodine (PII) was determined by the method of Aumont and Tressol (1987). Fodder Fodder which was being fed to these RESULTS The mineral contents of blood plasma and forage samples are summarized in Table 1 and 2, respectively. The plasma samples contained higher levels (P<0.05) of Zn and Pi during winter as compared to summer. The variations in Zn and P in the forage were also found to be significant (P<0.05), with higher levels of these elements during winter compared to during summer. Forage had statistically non-significant (P>0.05) levels of Ca, Fe, Cu and Mn during both seasons; contents of the Ca, Fe, Cu were higher during winter than those during summer though the difference was not statistically significant. The concentrations of other minerals in the plasma between the seasons was not statistically significant (P>0.05), with nonstatistically significant higher levels of Ca, Fe and PII minerals during winter than during summer. DISCUSSION The functions of the minerals in animal 46 Buffalo Bulletin (March 2015) Vol.34 No.1 Table 1. Mean plasma concentrations (Mean ± SE) and deficiency rate of different minerals during summer and winter seasons in buffaloes. Element Zn (μmol/l) Fe (μmol/l) Cu (μmol/l) Mn (μmol/l) PII (ng/ml) Ca (mg/dl) Pi (mg/dl) Summer 10.90 ± 0.45 (76.19) 47.53 ± 2.07 (4.17) 12.68 ± 0.35 (23.81) 0.82 ± 0.04 (20.83) 43.44 ± 3.15 (88.69) 8.92 ± 0.26 (41.07) 4.27 ± 0.20 (56.55) Winter 22.20*± 2.53 (21.81) 51.93 ± 5.92 (9.57) 12.68 ± 1.45 (23.40) 0.80 ± 0.09 (13.30) 49.09 ± 4.05 (84.57) 9.74 ± 0.30 (26.06) 4.99*± 0.20 (37.77) Figures in parenthesis show prevalence rate of deficiency . * Winter v/s summer difference (P<0.05) Table 2. Mean concentrations (Mean ± SE) of different minerals in summer and winter fodders. Element CLa Cu(ppm) Mn (ppm) Zn(ppm) Fe(ppm) Ca(%) P(%) <10.0 <30.0 <30.0 <30.0 0.30 0.25 Summer Meanb ±SEc 3.03 ± 0.17 19.25 ± 1.19 7.93 ± 0.61 239.18 ± 12.88 0.46 ± 0.05 0.24 ± 0.01 Winter Meanb ±SEc 3.83 ± 0.29 15.60 ±1.03 17.39*±1.77 294.81 ± 40.48 0.77 ± 0.11 0.31*± 0.01 a = Critical level (McDowell 2003) b = Least square mean from samples from all the districts in both the seasons c = SE of least square means * = Winter v/s summer difference (P<0.05) 47 Buffalo Bulletin (March 2015) Vol.34 No.1 both seasons were within the normal physiological range as per McDowell (1992). Baruah and Baruah (1997) also recorded no seasonal variation in mean plasma Cu levels of Jersey heifers. On the other hand, Goswami et al (1993) observed significant seasonal changes in plasma Cu levels. The overall prevalence of hypocuprosis among buffaloes was 23.40 and 23.81percent in winter and summer, respectively (Table 1). Similar overall mean plasma Mn levels in buffaloes during both the seasons (Table 1) were above the critical level of 0.37 μmol/l (Hidiroglou 1979). There was a wide variation in the plasma Mn levels (0 – 2.48 μmol/l) among buffaloes whereby many of the buffaloes were found to have nondetectable plasma Mn values in both the season. The overall deficiency percentage of Mn during winter was lower (13.30%) than that in summer (20.8%). These results corroborated with findings of Sawhney and Kehar (1961) who reported that Mn stores in liver and kidneys got depleted in hot and dry season and got repleted in winter. Mean plasma inorganic iodine (PII) level was higher during winter. The values during both the seasons were well below the critical level of 104.9 ng/ml (Rogers,1992). Lundgren and Johnson (1964) had reported that the low levels of PII could be due to higher environmental temperature. Jain (1990) found low iodine content of soil in Punjab which supports the present findings. High percentage of sub-clinical iodine deficiency was observed during summer (88.7) as well winter (84.6) seasons. Overall mean plasma Ca level in winter was higher. Higher plasma Ca levels in winter could be attributed to the significantly (P<0.01) higher levels of Ca found in winter fodder (Table 2). Earlier, Behera et al (2005) had also reported higher plasma Ca during winter season in sheep. physiology are interrelated: seldom can they be considered as single minerals with independent and self-sufficient roles (Ozdemir et al., 2006). The mineral elements are not synthesized in the body but are supplied by the feed. Their concentrations in the body fluids will therefore depend on the mineral contents of feed and forage, the level of dietary sources intake, and the availability of minerals (Suttle, 2010). Plant forages make up the bulk of the diet consumed by the livestock. Many environmental and plant factors affect the mineral concentrations of forage plants; these include ,species or strain/ variety, soil type, the climatic of seasonal conditions during plant growth, stage of maturity of forage plants and other management practices. The data reported here indicate that most of the macro and micro minerals studied are higher in the winter season both in the animal blood and forages compared to those during summer season indicating a direct plant-animal relationship. Mean plasma Zinc (Zn) level was significantly higher in winter (Table 1). Considering the critical limit of 12.2 μmol/l, the prevalence rate of Zn deficiency among buffaloes was 21.81 and 76.19 percent in winter and summer, respectively (Table 1). These findings could be correlated to significantly higher plasma Zn levels in winter season. Yadav et al (2002) had also reported lower incidence of Zn deficiency among buffaloes during winter. Plasma iron levels varied non-significantly among both the seasons but the mean plasma Fe values in the present study were much higher than the normal range of 17.9 - 35.8 μmol/l (Radostits et al., 2000). High Fe contents of fodder (Table 2) against the dietary requirement of 50 ppm (NRC 1989) appeared as the main factor behind elevated plasma Fe concentrations. Overall mean plasma Cu levels during 48 Buffalo Bulletin (March 2015) Vol.34 No.1 Tuli, V.P. Dixit and S.L. Bhela. 1993. Blood and seminal plasma trace mineral concentrations during different seasons in crossbred bulls Indian J. Anim. Sci., 63: 430-433. Hidiroglou, M. 1979. Manganese in ruminant nutrition. Can. J. Anim. Sci., 59: 217. Jain, R. 1990. Dietary intakes of iodine in selected goitre endemic and non-endemic areas of Punjab. Ph.D. Dissertation, Punjab Agricultural University, Ludhiana, India. Lundgren, R.G. and H.D. Johnson. 1964. Effects of temperature and feed intake on thyroxine Overall mean plasma inorganic phosphorus (Pi) level in winter was significantly (P<0.05) higher than the summer season (Table1). Higher winter levels could be attributed to the significantly (P<0.05) higher fodder levels (Table2) The overall prevalence of hypophosphataemia among buffaloes was 37.77 and 56.55 percent in winter and summer, respectively (Table 2). These findings of low prevalence in winter could be due to significantly higher Pi levels in plasma and fodder in the winter season. Similar prevalence rate (38.0%) of deficiency had been reported by Yadav et al (2002) among buffaloes of Haryana during winter. Thus, it can be concluded that alteration in the levels of different micro and macro minerals in the plasma corresponded to the fodder mineral variations, indicating a direct plantanimal relationship and showing the need of supplementation of the deficient minerals during summer season for these animals at the place where the livestock were being reared. I131 disappearance rates of cattle. J. Anim. Sci., 23: 28-31. McDowell, L.R. 1992. Minerals in Animal and Human Nutrition. Academic Press Inc, New York. NRC, 1996. National Academy of Sciences-National Research Council, 7th ed. Washington DC. Ozdemir, M., M. Cinar, S. Haliloglu and A. Eryavuz. 2006. Effects of defaunation and dietary nitrogen source on plasma and wool of lambs. Turk. J. Vet. Anim. Sci., 30: 367373. Radostits, O.M., C.C. Gay, D.C. Blood and K.W. Hinchcliff. 2000. Veterinary Medicine: A Textbook of Diseases of Cattle, Sheep, Pig, Goat and Horses. W.B. Saunders Harcourt Publishers Ltd., London. Rogers, P.A.M. 1992. Iodine deficiency in cattle. Irish Vet. News, September issue, p. 14-17. Sawhney, P.C. and N.D. Kehar. 1961. Investigation of trace element manganese. Part III. Variations in the manganese content of blood and tissues of cattle. Ann. Biochem. Exptl. Med., 21: 125-128. Singh, R. 2002. Epidemiological, clinicobiochemical and therapeutic studies on REFERENCES Aumont, G. and J.C. Tressol. 1987. Rapid method for the direct determination of inorganic iodine in plasma using ion-exchange chromatography and the Sandell and Kolthoff reaction. Analyst, 112: 875-877. Baruah, A. and K.K. Baruah. 1997. Studies on serum micro-minerals in Jersey heifers during different seasons. Indian Journal of Animal Health, 236: 115-116. Behera, P.C., N. Sharma and P.C. Bisoi. 2005. Seasonal variation of clinically important blood biochemical constituents of lambs. Indian Vet. J., 82: 26-28. Goswami, S.C., S.N. Mehta, G.C. Georgie, R.K. 49 Buffalo Bulletin (March 2015) Vol.34 No.1 trace elements deficiency in dairy animals and sheep of sub-mountainous region. Ph. D. Dissertation, Punjab Agricultural University, Ludhiana, India. Singh, S., M.L Bansal, T.P. Singh and R. Kumar. 1998. Statistical Methods for Research Workers. Kalyani Publishers, New Delhi. p. 287-301. Suttle, N.F. 2010. Mineral Nutrition of Livestock, 4th ed, Midlothian, UK. Taussky, H.H. and E. Shorr. 1953. A micro colorimetric method for the determination of inorganic phosphorus. J. Biol. Chem. 202: 675-685. Yadav, P.S., A.B. Mandal and D.V. Dahiya, 2002. Feeding pattern and mineral status of buffaloes in Panipat district of Haryana state. Anim. Nutr. Feed Techn., 2: 127-138. 50 Buffalo Bulletin (March 2015) Vol.34 No.1 Original Article A STUDY ON THE PREVALENCE OF PATHOLOGICAL ABNORMALITIES OF THE OVARIES AND OVIDUCTS DIAGNOSED AT POST MORTEM OF BUFFALOES IN MOSUL O.I. Azawi* and A.J. Ali major problems in buffalo herds in Mosul leading to slaughtered and economic losses. ABSTRACT The objective of the present study was to determine the prevalence of ovarian abnormalities and oviduct abnormalities of Iraqi buffaloes. Buffalo cow reproductive tracts were collected at random intervals slaughtered at Mosul abattoir, from January 2006 to August 2010. A total of 405 of mature primiparous and pluriparous genital tracts were examined. Ovaries were inspected for cross lesions and oviductal lesions were included in this study. Hydrosalpinx and pyosalpinx were diagnosed and evaluated by measurement using ruler and caliper. Salpingitis was classified into chronic, subacute and acute according to histological examination. Out of the 405 buffalo genital tracts examined, various abnormalities with different degrees of severity were observed in 216 (53.3%) of cases. Twenty two (5.4%) were pregnant and the remaining 41.2% (167/405) were macroscopically normal. Follicular cyst, luteal cyst, cystic corpus luteum, paraovarian cyst, ovarian sarcoma, inactive ovaries, senility anestrous, pyosalpinx, hemosalpinx, obstruction of oviduct, salpingitis, double oviduct were recorded. In a conclusion, the current study disclosed that, ovarian and oviductal abnormalities seem to be an important problem with possible subsequent infertility and sterility in buffalo cows in Mosul. The high proportions of hydrosalpinx and ovarobursal adhesions are the Keywords: ovarian abnormalities, follicular cyst, luteal cyst, ovarobursal adhesions, oviductal abnormalities, hydrosalpinx, pyosalpinx, buffalo cow INTRODUCTION Genital organ disorders are important cause of infertility and sterility in buffalo cows causing high economic losses (Azawi 2006, 2008; Azawi et al. 2008a). The ovaries and oviducts are important for controlling estrous cycle, hormonal production, fertilization and the maintenance of the embryo until its arrival in the uterus. Ovarian pathology and oviductal abnormalities are common diseases in domestic mammals, especially cattle and buffaloes (McEntee 1990; Azawi et al. 2008b). Abnormalities of the buffaloes reproductive organs had been reported in surveys in Iraq (Alwan et al. 2001; AlFahad et al. 2004; Azawi et al., 2008c), India (Rao and Sreemannarayana 1983; Sar et al. 1996), Egypt (Ghaneem et al. 2002) and Iran (Moghaddam and Mamoei 2004). The animals presented in all the above surveys did not included detailed pathological causes of certain abnormalities of the ovaries and oviducts. The aim of this study was to Department of Surgery and Theriogenology, College of Veterinary Medicine, University of Mosul, Mosul, Iraq, *E-mail: azawihh@yahoo.com 51 Buffalo Bulletin (March 2015) Vol.34 No.1 was no CL or CH and without > 5 mm diameter follicle (s) was regarded as being in anestrous due to old age or senility. Specimens with oviductal lesions were included in this study. Hydrosalpinx and pyosalpinx were diagnosed and evaluated by measurement using ruler and caliper. Salpingitis was classified into chronic, subacute and acute according to histological examination. The patience of each uterine tube was checked by injecting 5 ml of colored fluid (Indian ink) near the junction of the uterine tube with the corresponding uterine horn. Biopsies (approximately 1 cm3) were obtained from each oviducts affected with hydrosalpinx, pyosalpinx, salpingitis and oviductal obstruction of samples included in this study. The biopsy was immediately placed into bottle containing 10% formal saline solution and stored at 4°C till preparation for sectioning, which was included dehydration, clearing, embedding, sectioning and staining were performed as the methods described study the prevalence of ovarian abnormalities and oviduct abnormalities of buffaloes. MATERIALS AND METHODS Buffalo cow reproductive tracts were collected at random intervals slaughtered at Mosul abattoir, from January 2006 to August 2010. A total of 405 of mature primiparous and pluriparous genital tracts were examined. The specimens were transported to the college of veterinary medicine, university of Mosul. Each specimen was examined grossly in the laboratory in order to exclude any specimen containing reproductive abnormality. Pregnant specimens were discarded. All cases were examined for presence of fetuses. Then the vagina, uterus, uterine tubes and ovaries were visually inspected for cross lesions. The vagina and uterus were opened up to utero-tubal junction and examined. Ovaries were inspected for cross lesions and the number of corpora albicantia (CA) and side of the ovary with corpus luteum (CL) recorded. A pair of ovaries with either a corpus hemorrhagicum (CH), a large CL and > 5 mm follicle (s) in diameter or a regressing CL with follicle (s) > 6 mm in diameter were classified as active and the animals as cycling. When there was no CL or CH or the presence of a regressed CL without > 5 mm in diameter follicle (s), such ovaries were classified as inactive and the animals as noncycling. A regressing CL coupled with an incomplete involuted uterus was classified as postparturient anestrous. Corpora albicantia replacing the corpora lutea of pregnancy are large and tend to persist indefinitely (Roberts, 1986). They are more prominent in buffaloes, and can therefore be used to estimate the parity of an animal (Jainudeen et al., 1983). An animal with more than 7-10 CA and there by Luna (1968). RESULTS AND DISCUSSION Reproductive organs from 405 animals were examined; 5.4% (22/405) of the animals were pregnant, 41.2% (167/405) were cycling. Various abnormalities with different degrees of severity were observed in 216 (53.3%) of cases. The prevalence of the various ovarian and oviductal abnormalities of buffaloes is presented in Table 1. Ovarian abnormalities Follicular cysts (Figure 1) are recorded in six (1.5%) cases. The average diameter was 32.8 ± 1.3 mm. Luteal cysts (Figure 2) was diagnosed in one (0.2%) buffalo cow. Cystic corpora lutea were encountered unilaterally in five (1.2%) cases. The 52 Buffalo Bulletin (March 2015) Vol.34 No.1 corpora lutea had an average diameter of the cystic cavity in the center of the corpora lutea varied considerably from 6 to 18 mm. Twenty six (6.4%) cases had ovarobursal adhesions (Figure 3 and 4). The severity of ovarobursal adhesions ranged from mild strands of connective tissue between the ovary and the bursa (34.6%) to severe adhesions (65.4%), when the ovary was completely encapsulated in fibrous tissue. Paraovarian cysts were found in 18 (4.4%) of the cases, they were generally single (Figure 5), but double and triplet were also recorded. These cysts were filled with thick mucoid fluid. One ovarian tumor (Figure 6) was examined histologically and was confirmed to be ovarian sarcoma. Out of 405 examined genital tracts, 6 (1.5%) were found to be inactive ovaries. While five (1.2%) were found as senility anestrous. Oviductal abnormalities Hydrosalpinx (Figure 7 and 8) was found in 20 (4.9%) cases. In these cases dilatation of oviduct due to clear amber fluid accumulation were detected. In eight cases extreme dilatation were observed with the oviduct having maximum diameter of 30 mm. Pyosalpinx (Figure 9) was recorded in nine (2.2%) characterized by dilatation of the oviduct due to thick whitish-yellowish pyogenic fluid. Three cases (0.7%) of oviducts Table 1. Prevalence of various kinds of abnormalities in ovaries and oviducts in buffaloes. Abnormalities Follicular cyst Luteal cyst Cystic corpus luteum Paraovarian cyst Ovarobursal adhesions Ovarian sarcoma Inactive ovary Senility anestrous Total Abnormalities Hydrosalpinx Pyosalpinx Hemosalpinx Obstruction Salpingitis Adhesions-salpingitis Double oviducts Total No. 6 1 5 18 26 1 6 5 Ovary % 1.5 0.2 1.2 4.4 6.4 0.2 1.5 1.2 Right Left 4 (0.9) 1 (0.2) 1 (0.2) 14 (3.5) 15 (3.7) 2 (0.5) 0 4 (0.9) 4 (0.9) 11 (2.7) 68 Oviducts No. % 20 4.9 9 2.2 3 0.7 6 1.5 5 1.2 7 1.7 1 0.2 Right Left 15 (3.7) 6 (1.5) 5 (1.7) 3 (0.7) 51 53 Buffalo Bulletin (March 2015) Vol.34 No.1 filled with bloody discharge were recorded. Obstruction of oviduct was observed in six (1.5%) cases and salpingitis was found in five (1.2%) cases. Adhesions between mesosalpinx and perisalpingeal tissues were observed seven (1.7%). One case (0.2%) of double oviduct (Figure 10) was found in the left side of the tracts examined. Histological examination confirmed the diagnosis of double oviduct. Microscopic examination of the oviducts with hydrosalpinx showed mucosal atrophy and dilatation of oviduct lumen without any signs of inflammation characterized by no infiltration of inflammatory cell (Figure 11). While pyosalpinx showed mucosal atrophy and dilatation of uterine tube lumen with signs of severe inflammation including higher infiltration of lymphocytes and sloughing of the mucosa epithelial layer lining uterine tubes. The data obtained from this study reflect the high incidence of gross lesions in buffalo ovaries and oviducts. Most of these lesions were acquired as manifested by the high incidence of follicular cyst, luteal cyst, cystic corpus luteum, paraovarian cyst, ovarobursal adhesions, ovarian sarcoma, inactive ovary, senility anestrous hydrosalpinx, pyosalpinx, adhesions and obstruction of the oviduct. The prevalence of ovarian cyst recorded in this study is comparable with those of (Al-Dahash and David, cows (Kesler and Garverick, 1982). The frequency of paraovarian cyst in the present study is similar to these (Fathalla et al., 2000), who reported 4% in Jordan cattle. In some cases of paraovarian cyst were observed on the surface of the oviduct and extended pressure on it. This is in line with the reports of Roine (1998), who checked for the blockage of the lumen by flushing. The prevalence of ovarobursal adhesions obtained in this study is in agreement with those of (Alwan et al., 2001; AlFahad et al., 2004), who reported 5% and 10.4%, respectively. However, it is lower than those of (Assey et al., 1998; Feyissa, 2004), who reported 11% and 11.6%, respectively. Although the exact mechanism by which adhesions develop is unclear (Roberts, 1986), extreme adhesions have probably resulted from pregnancy complications that include retained fetal membranes and endometritis (Hatipoglu et al., 2000). Mild adhesions could result from non-infectious conditions such as physical trauma as a result of rough manipulation (Abalti et al., 2006). Localized abdominal infections such as omphalophlebitis and peritonitis are also suggested cause this condition (Noakes et al., 2002). The adhesions involved the right ovary more than the left but bilateral cases were also observed this study. This is in agreement with the findings of several workers (Herenda, 1987; Fathalla et al., 1977; Hatipoglu et al., 2000; Azawi, 2009) who reported 5.4% and 3.8%, respectively. However, the prevalence in the present study is lower than that of other previous reports, which varied from 6% to 30% (Herenda, 1987; Roine, 1998; Feyissa, 2004). Breed, age, level of milk production, feeding, management and exercise are factors, suggested as influencing the prevalence of cystic ovaries in cattle (Noakes et al., 2002). In dairy cattle cystic ovaries prolongs the postpartum interval to first estrous and conception in about 10-30% of dairy 2000; Hatipoglu et al., 2002; Abalti et al., 2006). This difference may be attributed to the more active of right ovary (Roberts, 1986). Extensive adhesions leading to the obliteration of the ovarian bursa, blockage of the abdominal opening of the infundibulum or extensive coverage of the ovarian surface with fibrous tissue will certainly interfere with ovulation. This in turn may lead to infertility or even sterility depending on extent and on whether the adhesions are unilateral or bilateral. In the present study, hydrosalpinx and 54 Buffalo Bulletin (March 2015) Vol.34 No.1 Figure 1. Follicular cyst in the right ovary. Figure 2. Luteal cyst in the left ovary. 55 Buffalo Bulletin (March 2015) Vol.34 No.1 Figure 3. Complete ovarobursal adhesions in the right ovary. Figure 4 Bilateral ovarobursal adhesions with a follicular cyst in the left ovary. 56 Buffalo Bulletin (March 2015) Vol.34 No.1 Figure 5. Paraovarian cyst near the right oviduct. Figure 6. Ovarian sarcoma. 57 Buffalo Bulletin (March 2015) Vol.34 No.1 Figure 7. Hydrosalpinx in the left oviduct highly enlarged than right oviduct that was also affected with hydrosalpinx with lower enlargement. Figure 8. Hydrosalpinx in both sides highly enlarged. 58 Buffalo Bulletin (March 2015) Vol.34 No.1 Figure 9. Pyosalpinx in both oviducts. Figure 10. Double oviducts. 59 Buffalo Bulletin (March 2015) Vol.34 No.1 pyosalpinx were accompanied with ovarobursal adhesions and chronic endometritis. Results of the present study indicated a high prevalence of hydrosalpinx when compared to the Iraqi southern breeds (Alwan et al., 2001; Al-Fahad et al., 2004). However, this disagreement can be accounted for largely, due to the high prevalence of toxic puerperal metritis and chronic metritis as founded by previous studies (Azawi et al., 2007; Azawi et al., 2008). These two reasons may explain the high prevalence of hydrosalpinx in Iraqi northern buffaloes. The obstruction in the lumen of the oviducts resulted in accumulation of fluid. It is tempting to attach some special significance to the association of endometritis with the occurrence of hydrosalpinx, and to suggest some contributing role in the production of severe inflammation in the endometrium extended to the utero-tubal junction. This theory could be confirmed by the results of the present study as all obstructions of the uterine tubes examined were near the uterotubal junction or in the end part of isthmus. These observations are in agreement with Miller and Campbell (1978) who claimed that hydrosalpinx is a sequel to salpingitis. In addition, Mastroianni (1999) reported hydrosalpinx as a result of some inflammatory process in or around the uterine tubes. While, Ellington and Schlafer (1993) opinion that is hydrosalpinx may be congenital disease. In a conclusion, the current study disclosed that, ovarian and oviductal abnormalities seem to be an important problem with possible subsequent infertility and sterility in buffalo cows in Mosul. The high proportions of hydrosalpinx and ovarobursal adhesions are the major problems in buffalo herds in Mosul leading to slaughtered and economic losses. REFERENCES Abalti, A., M. Bekana, M. Woldemeskel and F. Lobago. 2006. Female genital tract abnormalities of Zebu cattle slaughtered at Figure 11. Hydrosalpinx, mucosal atrophy and dilatation of oviduct lumen with low infiltration of leukocytes (H&E X 100). 60 Buffalo Bulletin (March 2015) Vol.34 No.1 Bahir-Dar Town, north-west Ethiopia. Trop. Anim. Health Pro., 38: 505-510. Al-Dahash, S.Y.A. and J.S.E. David. 1977. The incidence of ovarian activity, pregnancy and bovine genital abnormalities shown by abattoir survey. Vet. Rec., 101: 296-299. Al-Fahad, T.A., A.F. Alwan and N.S. Ibraheem. 2004. Histological and morphological study of abnormal cases of female reproductive system in Iraqi buffaloes. Iraqi J. Vet. Sci., 18: 109-115. Alwan, A.F., A.N. Abdul-Hammed and D.J. Khammas. 2001. A macroscopical study of abnormal genitalia of Iraqi female buffaloes. Iraqi J. Vet. Sci., 14: 129-132. Assey, R.J., B.M. Kessy, J.A. Matovelo and U. Minga. 1998. Incidence of gross reproductive abnormalities in small east African Zebu cattle. Trop. Anim. Health Pro., 30: 361-368. Azawi, O.I. 2008. Review: Postpartum uterine infection in cattle. Anim. Reprod. Sci., 105: 187-208. Azawi, O.I., S.N. Omran and J.J. Hadad. 2008a. A study on postpartum metritis in Iraqi buffalo cows: Bacterial causes and treatment. Reprod. Domest. Anim., 43: 556-565. Azawi, O.I. 2006. Clinical bacteriological and pathological studies of uterine infections in Iraqi buffalo cows. Ph. D. Thesis, College of Veterinary Medicine, University of Baghdad, Baghdad, Iraq. p. 106-210. Azawi, O.I., A.J. Ali and H.F. Al-Abidy. 2008b. Microbiological examination of gross cases of pyosalpinx in buffaloes diagnosed at post mortem. Buffalo Bull., 27: 187-191. Azawi, O.I., A.J. Ali and E.H. Lazim. 2008c. Pathological and anatomical abnormalities affecting buffalo cows reproductive tracts in Mosul. Iraqi J. Vet. Sci., 22: 59-67. Azawi, O.I., S.N. Omran and J.J. Hadad. 2007. Clinical, bacteriological, and histopathological study of toxic puerperal metritis in Iraqi buffalo. J. Dairy Sci., 90: 4654-4660. Azawi, O.I. 2009. A study on the pathological lesions of oviducts of buffaloes diagnosed at postmortem. Vet. Res. Commun., 33: 7785. Ellington, J.E. and D.H. Schlafer. 1993. Uterine tube disease in cattle. J. Am. Vet. Med. Assoc., 202(3): 450-454. Fathalla, M., N. Hailat, S.Q. Lafi, E. Abu Bash and A. Al-Sahli. 2000. An abattoir survey of gross reproductive abnormalities in the genital tract in north Jordan. Israel Vet. Med. Assoc., 5: 1-7. Feyissa, T. 2004. A study on gross and histopathological abnormalities of cows slaughtered at Addis Ababa abattoir. DVM thesis, Faculty Vet. Med., Addis Ababa University, Debra Zeit, Ethiopia. (cited by Abalti et al. 2006). Ghaneem, M., A.H. Shalaby, S. Sharawy and N. Saleh. 2002. Factors leading to endometritis in Egypt with special reference to reproductive performance. J. Reprod. Sci., 48: 371-375. Hatipoglu, F., M. Ortatili, M. Kiran, H. Erer and M. R. Cifici. 2000. An abattoir study of genital pathology in cows: I-Ovary and oviduct. Rev. Med. Vet. - Toulouse, 153: 29-33. Herenda, D. 1987. An abattoir survey of reproductive organ abnormalities in beef heifers. Can. Vet. J., 28: 33-37. Jainudeen, M.R., W. Sharifudden and F. Bashir Ahmed. 1983. Relationship of ovarian contents to progesterone concentration in 61 Buffalo Bulletin (March 2015) Vol.34 No.1 Woodstock. p. 381-359. Roine, K. 1998. Observations on genital abnormalities in dairy cows using slaughterhouse material. Nordic Vet. Med., 29: 188-193. Sar, G.C., B.N. Mohunty, S.K.H. Ray and D.N. Mohunty. 1996. Endometrial biopsy in infertile cows. Indian J. Anim. Sci., 66: 1100-1105. the swamp buffalo (Bubalus bubalis). Vet Rec., 113: 369-372. Jainudeen, M.R. 1986. Reproduction in water buffalo, p. 443-449. In Morrow, D.A. (ed). Current Therapy in Theriogenology. Philadelphia: W.B. Saunders Company. Kesler, D.J. and H.A. Garverick. 1982. Ovarian cysts in dairy cattle: A review. J. Anim. Sci., 55: 1147-1156. Luna, L.G. 1968. Histological Staining Methods of the Armed Forces Institute of Pathology, 3rd ed. McGraw-Hill books, New York. p. 2577. Mastroianni, J.R. 1999. The fallopian tube and reproductive health. J. Pediatr. Adol. Gynec., 12: 121-126. McEntee, K. 1990. The uterus: Congenital anomalies, 118-121. In McEntee K. (ed.) Reproductive Pathology of Domestic Animals. San Diego: Academic Press. Miller, R.I. and R.S.F. Campbell. 1978. Anatomy and pathology of bovine ovary and oviduct. Vet. Bull., 48: 737-753. Moghaddam, A.A.I. and M. Mamoei. 2004. A survey on some of the reproductive and productive traits of the buffalo in Iran, p. 1910. In Proceedings of 23rd World Buiatrics Congress. Qu & Eacute. Noakes, D.E., T.J. Parkinson, G.C.W. England and G.H. Arthur. 2002. Arthur’s Veterinary Reproduction and Obstetrics, 8th ed. Elsevier Sci. Ltd., p. 399-408. Rao, A.V.N. and O. Sreemannarayana. 1983. Clinical analysis of reproductive failure among female buffaloes (Bubalus bubalis) under village management in Andhra Pradesh. Theriogenology, 18, 403-411. Roberts, S. J. 1986. Veterinary Obstetrics and Genital Diseases, 3rd ed., S.J. Roberts62 Buffalo Bulletin (March 2015) Vol.34 No.1 Original Article EFFECT OF VITAMIN E AND MINERAL SUPPLEMENTATION ON BIOCHEMICAL PROFILE AND REPRODUCTIVE PERFORMANCE OF BUFFALOES H.M. Khan1, T.K. Mohanty2, M. Bhakat2, A.K. Gupta2, A.K. Tyagi3 and G. Mondal3 ABSTRACT vitamin E values obtained were statistically not significant. However, the supplemented group had lower levels than the control group at all the stages but vitamin E values had higher levels than the control group at all the stages. Cervical and uterine involution was completed in lesser days, involutory The experiment was designed to provide higher plane of nutrition, vitamin E and mineral supplementation for augmenting the improvement in reproductive performance. In the present investigation, 10 Murrah buffaloes each in two groups, expected to calve in winter season were selected during prepartum period. None of the buffaloes during periparturient period suffered from any clinical metabolic disease or reproductive disorders. Plasma Ca and Plasma inorganic P concentration showed significant difference on day 15 prepartum (P<0.01); Zn on day 15 prepartum (P<0.05) and day 15 postpartum (P<0.01); Cu on day 30 prepartum (P<0.05) and Mn on day 30 prepartum (P<0.05), however, the differences in concentrations at all other stages were non-significant but the supplemented group had higher levels than the control group at all the stages. The concentration of the plasma glucose exhibited significant difference (P<0.01) at 45 days postpartum but the supplemented group had higher levels than the control group at all the stages. The plasma BUN showed significant difference (P<0.05) at days 30 and 15 prepartum, calving day and on day 30 postpartum (P<0.01) and Plasma NEFA and changes took place at a faster pace and there were lesser percent of cows suffering from abnormal uterine changes in supplemented compared to control group. Supplemented group showed better reproductive performance considered in the study than control group. In total, around 12 days could be saved in days to first service if vitamin E and minerals were supplemented. Supplemented group showed early initiation of cyclicity (32 days postpartum) compared to control group (35 days postpartum). Cyclicity in most of the animals might have been initiated earlier than 30days as was evident from progesterone concentration (>1 ng/ml). Short and long luteal phases were observed on appraisal of progesterone concentration in both the groups which delayed the days to first service in these animals. It can be concluded that mineral and vitamin E supplementation improved the reproductive performance of buffalo during periparturient period. Sheep Research Station, Faculty of Veterinary Science and Animal Husbandry, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir (SKUAST-K), E-mail: hilal.ndri@gmail.com, bhakat. mukesh@gmail.com 2 Artificial Breeding Research Centre, National Dairy Research Institute, Karnal, Haryana, India 3 Dairy Cattle Nutrition Division, National Dairy Research Institute, Karnal, Haryana, India 1 63 Buffalo Bulletin (March 2015) Vol.34 No.1 Keywords: Murrah buffalo, mineral, vitamin E, reproductive performance, periparturient period Balagopal, 1994; Prajapati et al., 2005), metabolic disorders, retention of foetal membranes (Gupta et al., 2005), dystocia, abortion (McDowell 1992; Dutta et al., 2001; Sharma et al., 2005), weak calf syndrome (Logan et al., 1990), milk fever, vulval discharge (Husband, 2006) and poor conception rate (Khasatiya et al., 2005). Thus have negative impact on the subsequent fertility of the cow. Such disorders could probably be prevented by addressing to the basic etiology through balanced feeding and mineral supplementation during advanced pregnancy and early post-partum period, when the animals are highly prone to stress of heavy nutrient demand and drain (Mandali et al., 2002). Thus nutritional supplementations play important role to improve general, productive and reproductive health of animals (Kleczkowski et al., 2003). Further mineral (Sharma et al., 2003; Hussain et al., 2004; Borghese, 2005; Yildiz et al., 2006) and vitamin E supplementation (LeBlanc et al., 2004; Panda et al., 2006) improves reproductive performance because of their positive effect on steroid synthesis, release, follicular growth and symptoms of ovulatory oestrus (Srivastava, 2008). The impact of minerals and vitamins supplemented in the peripartum period in buffaloes on subsequent fertility is lacking and needs due importance for prevention of periparturient problems and improvement of fertility. In order to deal with above problems and to improve overall reproductive efficiency in buffaloes, the present investigation was undertaken to fill up the gaps in knowledge in Murrah buffaloes with the objective to investigate the role of prepartum mineral and vitamin E supplementation on postpartum reproductive performance. INTRODUCTION Nutritional management during the dry period is the main factor which may affect susceptibility of cows to metabolic and infectious diseases during the periparturient period (Dann et al., 2005; Campanile et al., 1997). Besides general nutritional status, deficiencies or imbalance with respect to specific nutrients (minerals and vitamins) have been found to have drastic effects on various determinants of reproductive performance leading to infertility. Vitamins and minerals (macro and microelements) in minute quantity play a decisive role in overall metabolism, normal growth, production and reproduction. Excess or even imbalance of some minerals and vitamins may have deleterious effect on health (Borghese, 2005). Further the impacts of such disturbances on general health including insidious sub-clinical diseases/ disorders have been recognized as the most important but covert factors with deleterious consequences for reproductive performance. Minerals and vitamins have direct or indirect relationship with productive and reproductive health of animals. Vitamin E is important for maintaining optimal immune function (Sikka et al., 2002; Sikka and Lal, 2006) and as anti-stress factors (Kahlon et al., 2006) and requirements are higher compared to production or reproduction requirements (Xin et al., 1991; Weiss, 1998). Deficiencies and imbalance of minerals during peri-parturient period are either solely incriminated for or associated with anestrous (Patil and Deshpande, 1979; Naidu and Rao, 1982; Agarwal et al., 1985; Singh and Vadnere, 1987), repeat breeding (Balakrishnan and 64 Buffalo Bulletin (March 2015) Vol.34 No.1 MATERIALS AND METHODS Scoring of uterine discharges and uterine involution The present study was conducted on 20 pregnant dry Murrah buffaloes maintained at Cattle Yard of National Dairy Research Institute (NDRI), Karnal, India. Twenty Murrah buffaloes 60 days prepartum were selected and randomly assigned to two experimental groups with 10 animals in each group; group 1 (C) was provided 20% higher nutrients than Kearl’s Feeding Standard (Chauhan et al., 2000) and group 2 (T) was provided 20% higher nutrients than Kearl’s Feeding Standard (Chauhan et al., 2000) along with vitamin E { (2000 IU from 60 days prepartum to 30 days postpartum and 1500 IU from 30 to 60 days postpartum) vitamin E 50% powder, Vet Chem } supplementation (Panda et al., 2006) and 50 gm of commercial mineral mixture (Agrimin, Agrivet Farm Care Division) to meet the expected requirements of the minerals. The buffaloes used for the investigation were kept in conventional barns throughout the prepartum period and were shifted to calving pens 2 weeks prior to expected date of parturition for extra care and attention upto 5 days after parturition. After that they were shifted to loose housing and group management system where other lactating buffaloes were kept. The parameters (time of parturition, days required for cessation of lochia, days required for complete uterine involution, days at first heat, days at first service) were recorded. All the experimental buffaloes were monitored regularly for estrus by visual observation and parading of vasectomised bull in the morning and evening hours. Animal were rectally confirmed for heat and inseminated with frozen semen by two inseminations at 12 h intervals. Buffaloes not returning to estrus after inseminations were examined per rectum on 45 for pregnancy confirmation. The experimental animals under investigation were scored for uterine discharges and Uterine Involution on 7, 14, 21, 28 and 35 days postpartum as per Sheldon and Noakes (1998) for early diagnosis and treatment of uterine infections. Plasma Biochemical Assay The blood samples were collected from jugular vein into heparinized (20 IU heparin/ ml blood) tubes from all experimental animals at fortnightly interval from 60 days prepartum to 60 days postpartum. Immediately after sampling the blood was centrifuged at 3000 rpm for 15 to 20 minutes and the plasma was separated and stored frozen (-20°C) until analyzed. Following micronutrients and metabolites in control as well as in experimental groups were estimated: Plasma Mineral and Metabolite Estimation Plasma Ca, inorganic P, Zn, Cu and Mn were estimated at fortnightly intervals in both the groups. Plasma minerals (Ca, Zn, Mn and Cu) except phosphorous were estimated with the help of Atomic absorption Spectrophotometer (Model PU9100X Atomic absorption Spectrophotometer, Philips). The procedure described in AAS (1988) manual for preparation of stock and standard solutions and choice of instrumental conditions were followed. Plasma inorganic phosphorus was estimated following the method of Fiske and Subbarow (1925). An HPLC method for simultaneous estimation of α-tocopherol in plasma was adopted (Chawla and Kaur, 2001). The plasma urea was estimated according to Rahmatulla and Boyde in 1980. The copper soap extraction method modified by Shipe et al. (1980) was adopted for the determination of plasma NEFA and the standard 65 Buffalo Bulletin (March 2015) Vol.34 No.1 Table 1 for interpretation from 45 days prepartum to 45 days postpartum taking 0 day as the day of calving. The supplemented group had higher levels of plasma mineral (Ca, inorganic P, Zn, Cu and Mn), Plasma glucose, Plasma Vitamin E and lower level Plasma BUN and Plasma NEFA than the control group at all the stages reflecting improvement and beneficial effect due to vitamin E and mineral supplementation. curve was prepared with palmitic acid as specified by Koops and Klomp (1977). Glucose in blood plasma was estimated by end-point o-Toluidine method. Blood plasma analysis for progesterone quantification The method of Kamboj and Prakash (1993) was followed through RIA for blood plasma progesterone estimation. Plasma Ca Plasma Ca concentration did not follow a specific pattern in both the groups. Plasma Ca decreased on days 30 and 15 prepartum in control and day 30 only in supplemented group during the prepartum period. These changes were attributed to growing needs of the fetus and changes in the available fodder. At parturition and 15 day postpartum there was a substantial increase, whereas days 30 and 45 showed a decrease in Ca level in both the groups. The changes reflected in both the groups were not significant except day 15 prepartum (P<0.01). The increasing and decreasing trend of plasma Ca not following a specific pattern may be attributed to changes in available fodder. The drop in Ca concentration on day 30 and 45 might be due to its increased diversion for foetal growth and more secretion of Ca through colostrums and milk; however the concentrations were within the normal range. The normal values in cows vary between 8-12 mg/dl and hypocalcaemia occurs when value decreases to 3-7 mg/dl (Hidiroglou, 1979; McDowell, 1992; Shah et al., 2003). Buffalo calcium blood levels have been reported to show limited variability during lactation and dry milk period. Campanile et al. (1997) found constant values of about 10 mg/dl. Higher levels have been found in the last month of pregnancy and lower ones Statistical analysis Effect of vitamin E and mineral supplementation on mineral and metabolic status and reproductive performance was calculated by t test using Systat 6 software package. RESULTS AND DISCUSSION Feeding plays an important role in the performance of the animals. The experiment was designed to provide higher plane of nutrition (Chauhan et al., 2000) and vitamin E and mineral supplementation for augmenting the improvement in reproductive performance. In the present investigation, 10 buffaloes each expected to calve in winter season were selected during prepartum period for investigating the role of vitamin E and mineral supplementation supplemented through prepartum to postpartum period. None of the buffaloes during periparturient period suffered from any clinical metabolic disease or reproductive disorders. Two of the buffaloes, one each from both the groups due to chronic problem were removed from the experimental study. Mineral profile of buffaloes The results obtained are presented in the 66 A 67 Supplemented Control Supplemented Control Supplemented Control Supplemented Control Supplemented Control -45d 10.06±0.21 9.97±0.26 5.59±0.22 5.51±0.15 2.46±0.27 2.05±0.16 0.96±0.08 0.93±0.11 1.40±0.10 1.44±0.13 - mg%; B- ppm; * - Significant (P<0.05); ** - Significant (P<0.01) CuB MnB ZnB PA Ca A Prepartum -30d -15d 9.6±0.23 10.19±0.29** 9.15±0.26 9.06±0.22** 5.65±0.18 5.77±0.10** 5.42±0.22 5.13±0.14** 2.34±0.34 2.74±0.20* 2.08±0.20 2.20±0.14* 1.02±0.03* 0.80±0.08 0.87±0.05* 0.71±0.04 1.55±0.07* 1.29±0.15 1.24±0.13* 1.21±0.09 0d 10.22±0.33 9.47±0.32 5.65±0.15 5.27±0.18 1.89±0.23 1.72±0.09 0.65±0.07 0.54±0.05 0.70±0.09 0.63±0.08 15 9.96±0.14 9.46±0.23 5.68±0.15 5.22±0.20 1.92±0.12** 1.46±0.08** 0.91±0.10 0.72±0.08 1.17±0.19 0.80±0.17 Table 1. Mineral status of vitamin E and mineral supplemented and control buffaloes (Mean ± S.E.). Postpartum 30 10.09±0.19 9.62±0.24 5.72±0.14 5.44±0.12 1.98±0.08 1.81±0.08 0.73±0.07 0.64±0.08 1.22±0.09 0.92±0.18 45 9.26±0.14 8.95±0.16 5.99±0.23 5.55±0.24 2.62±0.40 2.10±0.09 0.76±0.07 0.71±0.03 1.23±0.09 1.12±0.15 Buffalo Bulletin (March 2015) Vol.34 No.1 Buffalo Bulletin (March 2015) Vol.34 No.1 at the end of the lactation period (Montemurro et al., 1997). A seasonal variation has been evidenced with higher values during the winter as leguminous fodder contains more calcium. Ca deficiency in cow causes reproductive disorders viz. prolapse of uterus, retained placenta, difficult delivery and delay in uterine involution. In buffalo, calcium excesses could alter the Ca/P ratio during the dry period, inducing parathyroid hypoactivity which would cause magnesium to increase and calcium to decrease at the beginning of the lactation due to a non immediate calcium mobilization by the bones. The altered Ca/Mg ratio has been incriminated for atony of uterus and eventually uterine prolapse (Campanile et al., 1997). P i.e. maintaining normal level (Campanile et al., 1997). Plasma Zn Plasma Zn concentration was lowest on the day of calving in both the groups. The Zn concentration dropped on day 30 prepartum and day of calving and showed an increasing trend thereafter in supplemented buffaloes, whereas it showed an increasing trend at all stages except day of calving and day 15 postpartum in control group. There was significant difference in plasma concentration of the Zn on day 15 prepartum (P<0.05) and day 15 postpartum (P<0.01). The differences in concentration at all other stages was non significant. The results regarding plasma Zn concentration in consonance with Panda (2003), who also reported decrease in plasma Zn concentration in buffaloes during late gestation and parturition. Plasma inorganic P Plasma inorganic P showed a specific trend. It increased in the supplemented group upto days 15 prepartum and declined on calving day and showed an increasing trend thereafter, whereas in control group it declined upto day15 prepartum and thereafter showed an increasing trend. The differences in concentration at all stages was non significant except day 15 prepartum (P<0.01). The drop in concentration of plasma P during prepartum may be due to increasing demands of growing foetus and also due to changes in concentration of available fodder. Phosphorus levels in buffaloes have been found to be quite stable at 6 mg/dl (Campanile et al., 1997). An increasing trend has been evidenced starting from the pre-partum period (6.3 mg/dl) to 160 days of lactation (7.9 mg/dl) (Montemurro et al., 1997). Phosphorus deficiency during dry period has been recognized as the most frequent causes of vaginal and/or uterine prolapse. Dietary deficiency of P before calving has been found to cause decreased calcium levels at calving without altering serum Plasma Cu and Mn Plasma Cu levels followed a particular trend in both the groups. It started declining upto calving and thereafter there was an increase in its concentration, except at day 30 in the supplemented group wherein it showed an increasing level. The extent of decrease in Cu concentration at parturition was more in comparison to other minerals. There was significant difference in plasma concentration of the Cu on day 30 prepartum (P<0.05), however, the differences in concentration at all other stages were non significant. Plasma Mn levels followed a decreasing trend upto parturition and followed increasing trend following parturition except on day 30 in both the groups. The drop in the Mn concentration during prepartum might be due to the increasing demands of growing foetus and utilization for improving 68 Buffalo Bulletin (March 2015) Vol.34 No.1 antioxidant status. The drop following parturition on day 30 might be due to variation in available fodders. There was significant difference in plasma concentration of the Mn on day 30 prepartum (P<0.05), however, the differences in concentration at all other stages were non significant. Panda (2003) also found the similar trend in Cu and Mn concentration but reported higher levels than the present findings. and highly significant difference (P<0.01) on day 30 postpartum. The differences in concentration at other periods was non significant. Plasma blood urea concentrations were close to the normal ranges in buffaloes (Borghese, 2005). Urea concentration is an indicator of energy protein balance (Dhali, 2001; Campanile et al., 1998; Dhali et al., 2006) and is typically increased in cows deficient in energy. Metabolic profile of buffaloes Metabolic profile reflects the nutritional and physiological status of the animal. In the present study, the metabolic profile of the animals in terms of blood glucose, BUN and NEFA were evaluated to delineate their effects on reproduction performance in control and supplemented groups. The metabolic profile in control and supplemented buffaloes is presented (Table 2) for ease of interpretation. Plasma NEFA Plasma NEFA showed decreasing and increasing trend in both the groups and the values obtained were statistically non significant. During postpartum increasing trend was followed during 30 days signifying slight negative energy balance but the values are much lower than in cattle. Buffaloes have higher protein and energy utilizing efficiencies as compared to cattle at similar fat corrected milk production level, plane of energy and protein nutrition, body size and weight change (Paul et al., 2003) which could be the reason for less negative energy balance reflected in buffaloes during postpartum period. Plasma glucose The concentration of the plasma glucose exhibited a highly significant difference (P<0.01) among the treatment groups at 45 days postpartum (Table 2). Plasma glucose followed an increasing trend throughout the experiment period except on day 30 when it showed slight decrease in both the groups which might be due to change or variation in the fodder supplied or other managemental and environmental effects. However, the differences in concentration at other periods was non significant. Plasma vitamin E The plasma vitamin E values obtained showed a decreasing trend in the control group during prepartum period and thereafter increased upto day 45 postpartum. In Supplemented group, there was slight decrease in the concentration on days 15 prepartum, calving day and 15 day postpartum. The difference in the concentration of two groups was statistically non significant. Campanile et al. (1997) reported that in buffaloes average value of vitamin E is 175 g/l and it increased with the distance from calving and reduced after 120 days of lactation. An increase in serum α-tocopherol to 1 μg/ml in the last week prepartum has been Plasma BUN The plasma BUN values obtained were lower in the prepartum than postpartum period. Plasma BUN decreased during prepartum period and increased during postpartum period. Plasma blood urea nitrogen showed significant difference (P<0.05) at days 30 and 15 prepartum, calving day 69 Supplemented Control Supplemented Control Supplemented Control Supplemented Control -45d 57.53±2.73 63.89±5.63 15.03±1.25 24.95±5.64 305.89±10.98 305.41±11.35 1.42±0.15 1.40±0.19 – mg%; B - μmol/l; C -μg/ml; * - Significant (P<0.05); ** - Significant (P<0.01) BUN – Blood urea nitrogen; NEFA – Non-esterified fatty acids A Vitamin E C NEFA B BUN A Glucose A Prepartum -30d -15d 62.06±1.72 65.46±3.44 67.18±2.20 69.80±2.44 15.13±1.28* 12.19±1.38* 24.71±4.11* 21.26±2.96* 275.64±19.31 298.81±10.76 273.81±10.07 295.22±7.17 1.44±0.21 1.24±0.16 1.25±0.27 1.23±0.17 0d 71.67±3.67 72.19±3.66 16.70±2.81* 22.81±2.27* 327.73±16.93 338.10±14.82 1.30±0.22 0.93±0.11 15 76.26±2.27 73.41±2.68 16.63±2.81 25.65±4.13 337.04±13.39 351.31±11.35 1.23±0.14 1.04±0.17 Table 2. Metabolic status of vitamin E and mineral supplemented and control buffaloes (Mean ± S.E.). Postpartum 30 75.53±3.01 72.21±2.70 20.16±1.10** 28.55±2.57** 331.04±13.52 365.64±10.31 1.53±0.14 1.28±0.12 45 79.13±2.06** 71.03±1.40** 21.18±1.96 25.42±2.16 325.17±6.99 347.66±15.05 1.68±0.17 1.42±0.07 Buffalo Bulletin (March 2015) Vol.34 No.1 70 Buffalo Bulletin (March 2015) Vol.34 No.1 found to reduce the risk of retained placenta by 20% (LeBlanc et al., 2004). Peripartum decreases in serum concentrations of vitamins A and E have been incriminated for impaired immune function in dairy cows (LeBlanc et al., 2004). Oral administration of selenium along with vitamin E to anoestrus buffaloes is more beneficial in increasing the antioxidant status as revealed by the increase in the level of vitamin E, β-carotene and decrease in lipid per oxidation (Nayyar et al., 2002); higher levels glucose, cholesterol, triiodothyronine and thyroxine (Nayyar et al., 2003) and improvement of blood biochemical composition (Anita et al., 2004). in both the groups which may be attributed to better nutrition available to both groups. This is in agreement with findings of Chauhan et al. (2000). They also reported no case of RFM if buffaloes are fed at a higher rate than recommended by Kearl (1982). The buffaloes with abnormal uterine involutory changes particularly having foul smelling discharges or purulent discharge (puerperal metritis) and RFM cases were treated as soon as detected and were declared free of disease as per the score card after completion of uterine involution. The presence of mildly purulent uterine discharge in the first month postpartum likely reflects a successful immune response by the cow to a bacterial challenge. Uterine involution largely depends on the intrauterine contamination with pathogenic bacteria. However, presence of bacteria in the uterus of postpartum cows does not always indicate a disease condition. Bacterial presence in the uterus for the first 10-14th day postpartum has been considered usual and could be detected in more than 90% of the cows, regardless of disease signs (Sheldon and Dobson, 2004). The presence of bacteria has been found sporadic on 28-35 days after calving, and in normal healthy conditions the uterine cavity has to be sterile thereafter (Paisley et al., 1986; Hussain, 1989; Hussain and Daniel, 1991a,b). However the condition may be either clinical or sub-clinical as well as the overall effects vary depending upon the immune status of the host (Gilbert et al., 1998; LeBlanc et al., 2002; Kasimanickam et al., 2004). Although the role of host’s humoral immune response in disease remains poorly defined, in a physiological situation the self-defence mechanisms of the uterus are able to counteract the bacterial infection (Foldi et al., 2006). Sheldon (2004) propounded that 90% cows postpartum develop a mild, nonpathological form of endometritis. In majority of cases the local Uterine and cervical involution During postpartum period, the reproductive organs were palpated transrectal on days 7,14,21,28,35 and 42 for observing cervical and uterine involutory changes, abnormal discharges if any as per the score card (Sheldon and Noakes, 1998) with slight modifications. The general goal for postpartum reproductive health is for the uterus to be completely involuted and free of infection, and for cows to be cyclic by the time they enter the breeding period (after 50 to 60 DIM) (LeBlanc et al., 2002). There was no significant difference in days to completion of cervical and uterine involution. In supplemented group, involuntary changes took place at a faster pace than the control group (Table 3). However, cervical and uterine involution was completed in shorter days (Table 3) and lesser percent of cows suffering from abnormal uterine changes in supplemented group than control group (Table 4) signifies the role of vitamin E and mineral supplementation which can further be substantiated by the mineral and metabolic profile of the supplemented group. There were no cases of RFM and metritis 71 Buffalo Bulletin (March 2015) Vol.34 No.1 Table 3. Effect of vitamin E and mineral supplementation on involutory changes. Days 7 14 21 28 35 42 Control 4.89 3.56 2.33 1.33 0.33 0 Supplemented 5.55 3.22 1.33 0.22 0 0 Table 4. Effect of vitamin E and mineral supplementation on abnormal uterine involutory changes as per score card. Days 7 14 21 28 35 42 Control (%) 22.22 11.11 33.33 55.56 11.11 0 Supplemented (%) 33.33 11.11 0 0 0 0 Table 5. Effect of vitamin E and mineral supplementation on reproductive parameters. Parameter Control 6.37±1.11 34.22±2.17 73.25±10.82 32 44.44 66.67 33.33 PDD (h) Uterine involution (Days) DFS Initiation of cyclicity P4 > 1 ng/ml (Days) Risk to First service <60 days (%) Risk to First service <90 days (%) Risk to First service >90 days (%) * - Significant (P<0.05); ** - Significant (P<0.01) PDD- Placental Delivery Duration; DFS- Days to First Service 72 Supplemented 4.53±0.72 28.78±1.40 61.88±6.92 35 44.44 87.5 12.5 Buffalo Bulletin (March 2015) Vol.34 No.1 antimicrobial defence mechanisms eliminates the pathogens and this mild non-pathological form of endometritis resolves within some days. Supplementation of Vitamin E and selenium to Murrah buffaloes during prepartum period has been shown to shorten expulsion time of foetal membranes and early uterine involution (Qureshi et al., 1997; Mavi et al., 2006; Panda et al., 2006) and decrease metritis cases. Similar observations have been reported for Dairy cows supplemented with Vitamin E and Zinc (Campbell and Miller, 1998). However, LeBlanc et al. (2002) reported that supplementation caused only conditional benefit of treatment for reduction of the incidence of retained placenta and no significant effects could be observed in the incidence of retained placenta, clinical mastitis, metritis, endometritis, ketosis, displaced abomasum, or lameness. Metabolic disorders like hyperketonaemia and deficiency conditions such as selenium, vitamin E and vitamin A deficiency have been incriminated for altered competence of cellular self-defence mechanisms, which in turn increases the risk for developing metritis (Lewis, 1997; Reist et al., 2002; Sheldon and Dobson, 2004). Oral administration of selenium along with vitamin E in buffaloes is more beneficial as it increases the antioxidant status as revealed by the increase in the level of vitamin E (Nayyar et al., 2002); higher levels glucose (Nayyar et al., 2003) and improvement of blood biochemical composition (Anita et al., 2004). It has been opined that the effects of vitamin E and Se on neutrophils promote uterine modeling and involution. 5). Risk to first service on days 60, 90 and >90 was calculated by the number of animals receiving first service by days 60, 90 and >90 divided by the total number of experimental animals. Vitamin E and mineral supplemented group showed better reproductive performance in all the reproductive parameters considered in the study than control group. Mineral and metabolic status as already discussed substantiates the better performance of the supplemented group in the study regarding reproductive performance. In total around 12 days could be saved in days to first service if vitamin E and minerals are supplemented. The better performance in winter season of this experiment could be attributed mainly to high plane of nutrition provided in the prepartum period which is substantiated by the mineral and metabolic profile which was optimum required for better performance. Progesterone estimation was done from 30 days postpartum to evaluate the effect of vitamin E and mineral supplementation on the initiation of cyclicity in the experimental buffaloes. Plasma progesterone concentration more than 1 ng/ml was used as criteria for assessing initiation of cyclicity. Supplemented group showed early initiation of cyclicity (32 days postpartum) compared to control group (35 days postpartum). Cyclicity in most of the animals might have been initiated earlier than 30 days as was evident from progesterone concentration. Short and long luteal phases were observed on appraisal of progesterone concentration in both the groups which delayed the days to first service in these animals. Campbell and Miller (1998) also reported improvement of reproductive performance for dairy cows supplemented with vitamin E and Zn. Changes in immune function can contribute to improved reproductive efficiency. Immunopotentiation in Reproductive performance Reproductive performance of the buffaloes in two different groups was evaluated on the basis of PDD, uterine involution, days to first service, risk to first service on days 60, 90 and >90 (Table 73 Buffalo Bulletin (March 2015) Vol.34 No.1 late gestation with vitamin E and Selenium has been shown to reduce the calving to first oestrus interval and the length of the postpartum service period (Qureshi et al., 1997; Panda et al., 2006). Supplementation of vitamin E and selenium to Murrah buffaloes during prepartum period has been shown to cause a significant increase in conception rate, decrease in service per conception, early initiation of postpartum ovarian activity and early exhibition of first postpartum heat (Mavi et al., 2006). The progesterone levels remained at basal levels from day 5 to day 30 postpartum and started rising thereafter (Bahga and Ganwar, 1988). Progesterone levels of 0.30, 1.43, 3.29 and 0.88 were reported by Qureshi et al. (2000) at estrus, developing, developed and regressing corpus luteum respectively. Progesterone analysis revealed that 23-70% of the postpartum buffaloes had one or more covert estruses before the first overt estrus (Batra and Pandey, 1983; Usmani et al., 1984; Sharma and Kaker, 1990). Also, duration of first progesterone rise of over I ng/ ml of plasma was found to be significantly longer (Mavi et al., 2006) in supplemented buffaloes. Progesterone monitoring of postpartum buffaloes for detection of first ovulation offers an objective and accurate method for assessment of the reproductive potential of buffaloes (El-Wishy, 2007). Similar observations have been reported for Dairy cows supplemented with vitamin E and Zinc (Campbell and Miller, 1998). Shorter days to first service have been attributed to combined effect of mineral and vitamin supplementation because of their positive effect on steroid synthesis, release, follicular growth and symptoms of ovulatory oestrus (Srivastava, 2008). Immunocompetence has been suggested as a useful tool for determining the requirements of some vitamins. Requirements that are based on measures of immune function have been reported to be higher than those that are based on production or reproduction (Weiss, 1998). It has been emphasised that the amount of micronutrients needed for optimal immune function may exceed that amount which will prevent more classical deficiency signs. In general, mineral deficiencies have been associated with altered metabolic profile leading to most periparturient disorders in buffaloes. Thus, such disorders could probably be prevented by addressing to the basic etiology through balanced feeding and mineral supplementation during advanced pregnancy and early post-partum period, when the animals are highly prone to stress of heavy nutrient demand and drain (Mandali et al., 2002). CONCLUSION Higher plane of nutrition needs to be followed during prepartum for meeting the requirements of buffaloes. Additionally vitamin E and mineral supplementation should be provided during the prepartum period to meet the requirements of critical elements for better reproductive performance. REFERENCES Agarwal, S.K., N.N. Pandey and U. Shanker. 1985. Serum protein, inorganic phosphorous and blood glucose in relation to different phases of reproduction in crossbred cattle. Indian J. Anim. Reprod., 6: 23-25. Anita, A., S.P.S. Singh and S. Nayyar. 2004. 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Naidu, K.V. and A.R. Rao. 1982. A study on the etiology of anestrus in crossbred cows. Indian Vet. J., 59: 781. Nayyar, S., V.K. Gill, V.S. Malik, K.S. Roy and R. Singh. 2003. Vitamin E and selenium improve the blood biochemical composition of anoestrus buffalo heifers. Indian J. Anim. Sci., 73(6): 654-656. Nayyar, S., V.K. Gill, N. Singh, K.S. Roy and R. Singh. 2002. Levels of antioxidant vitamins in anestrus buffalo heifers supplemented with vitamin E and selenium. Indian J. Anim. Sci., 72(5): 395-397. Paisley, L.G., W.D. Mickelson and P.B. Anderson. 1986. Mechanisms and therapy for retained fetal membranes and uterine infection of cows: a review. Theriogenology, 25: 841857. Panda, N. 2003. Optimisation of vitamin E doses for improved immunity and udder health in Murrah buffaloes. Ph. D. Thesis, National Dairy Research Institute, Karnal, India. Panda, N., H. Kaur and T.K. Mohanty. 2006. Reproductive performance of dairy buffaloes supplemented with varying levels of vitamin E. Asian Austral. J. Anim., 19(1): 19. Patil, R.V. and B.R. Deshpande. 1979. Changes in body weight, blood glucose and serum proteins in relation to the appearance of postpartum oestrus in Gir cows. J. Reprod. Fertil., 57: 25-27. Paul, S.S., A.B. Mandal, A. Kannan, G.P. Mandal and N.N. Pathak. 2003. Comparative dry matter intake and nutrient utilization efficiency in lactating cattle and buffaloes. J. Sci. Food Agr., 83: 258-267. Prajapati, S.B., D.J. Ghodasara, B.P. Joshi, K.S. Prajapati and V.R. Jani. 2005. Etiopathological study of endometritis in repeat breeder buffaloes. Buffalo J., 2: 145-165. Qureshi, M.S., G. Habib, G. Nawab, M.M. Siddiqui, N. Ahmad and H.A. Samad. 2000. Milk progesterone profiles in various reproductive states in dairy buffaloes under field conditions. Proc. Natl. Sci. Counc. ROC(B), 24(2): 70-75. Qureshi, Z.I., L.A. Lodhi and A. Sattar. 1997. 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Micro mineral deficiency disorders and treatment: A review. Indian J. Anim. Sci., 75(2): 246257. Sharma, M.C., S. Raju, C. Joshi, H. Kaur and V.P. Varshney. 2003. Studies on serum micromineral, hormone and vitamin profile and its effect on production and therapeutic management of buffaloes in Haryana state of India. Asian Austral. J. Anim., 16(4): 519-528. Sharma, Y.P. and M.L. Kaker. 1990. Monitoring ovarian activity in postpartum Murrah buffalo through milk progesterone enzymeimmunoassay. Theriogenology, 33: 915923. Sheldon, I.M. and D.E. Noakes. 1998. Comparison of three treatments for bovine endometritis. Vet. Rec., 142: 575-579. Sheldon, I.M. 2004. The postpartum uterus. Vet. Clin. N. Am. - Food A., 20(3): 569-591. Sheldon, I.M. and H. Dobson. 2004. Postpartum uterine health in cattle. Anim. Reprod. Sci., 83: 295-306. Shipe, W.F., G.F. Senyk and K.B. Fountain. 1980. Modified copper soap solvent extraction method for measuring free fatty acids in milk. J. Dairy Sci., 63: 193-198. Sikka, P. and D. Lal. 2006. Studies on vitamin mineral interactions in relation to passive transfer of immunoglobulin in buffalo calves. Asian Austral. J. Anim., 19(6): 825. Sikka, P., D. Lall, U. Arora and R.K. Sethi. 2002. Growth and passive immunity in response to micronutrient supplementation in new-born calves of Murrah buffaloes given fat soluble vitamins during late pregnancy. Lives. Prod. Sci., 75: 301-311. Singh, S. and S.V. Vadnere. 1987. Induction of oestrus by supplementation of different minerals in postpartum anestrus crossbred cows. Indian J. Anim. Reprod., 8: 46. Srivastava, S.K. 2008. Effect of mineral supplement on oestrus induction and conception in anoestrus crossbred heifers. Indian J. Anim Sci., 78(3): 275-276. Usmani, R.H., M. Ahmad, and S.K. Inskeep. 1984. Characteristics of first postpartum estrus in Nili-Ravi buffaloes. Pak. Vet. J., 5: 259262. Weiss, W.P. 1998. Requirements of fat-soluble vitamins for dairy cows: a review. J. Dairy Sci., 81: 2493-2501. Xin, Z., D.F. Waterman, R.W. Hemken and R.J. Harmon. 1991. Effects of copper status on neutrophil function, superoxide dismutase, and copper distribution in steers. J. Dairy Sci., 74: 3078-3085. Yildiz, H., E. Kaygusuzoglu and M. Aydin. 2006. Serum mineral status during pregnancy in cows. Indian J. Anim. Sci., 76(8): 591-595. 78 Buffalo Bulletin (March 2015) Vol.34 No.1 Original Article EFFECT OF VITAMIN E AND MINERAL SUPPLEMENTATION DURING PERI-PARTUM PERIOD ON BCS, BODY WEIGHT AND CALF PERFORMANCE IN MURRAH BUFFALOES H.M. Khan1, T.K. Mohanty2, M. Bhakat2, A.K. Gupta2 and G. Mondal3 ABSTRACT that vitamin E and mineral supplementation during peripartum period improves the performance of Murrah buffalo and their calves. The present study was conducted on twenty Murrah buffaloes 60 days prepartum and randomly assigned to two experimental groups with 10 animals in each group; Control group was provided 20% higher nutrients than Kearl’s Feeding Standard and group 2 was provided 20% higher nutrients than Kearl’s Feeding Standard along with vitamin E { (2000IU from 60 days prepartum to 30 days postpartum and 1500IU from 30 to 60 days postpartum) vitamin E 50 % powder, Vet Chem } supplementation and 50 gm of commercial mineral mixture (Agrimin, Agrivet Farm Care Division) to meet the expected requirements of the minerals. Body condition score (BCS) increased upto parturition and thereafter decreased in both the groups. The prepartum and postpartum changes in body weights (BW) were not apparently marked to be reflected in BCS changes which were almost similar (0.12 vs 0.16 prepartum and 0.39 vs 0.35 postpartum). Calves born to mineral and vitamin E supplemented buffaloes performed well in terms of their birth weight, body weight gain upto 90 days and calf weight to dam weight ratio. However, the differences between the two groups were statistically not significant. It can be concluded Keywords: BCS, BW, mineral, Murrah buffalo, vitamin E INTRODUCTION Vitamins and minerals (macro and microelements) play a vital role in metabolism, normal growth, production and reproduction. Requirement of these elements are very less and depends on the system of rearing, agronomic status and physiological status of the animal. Under tropical climatic conditions, mineral and vitamin deficiency problems have been recognized to be very common causing production and reproduction problems unless proper dietary supplementations are provided to save huge economic losses (Sharma et al., 2003; Yildiz et al., 2006). Prepartum cows undergo a number of changes from the end of lactation until subsequent parturition. Lactation ceases, and cows experience changes in type of diet, amount of dry matter intake, body condition, body weight, and fetal development. Kertz et al. Sheep Research Station, Faculty of Veterinary Science and Animal Husbandry, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir (SKUAST-K), E-mail: hilal.ndri@gmail.com, bhakat. mukesh@gmail.com 2 Artificial Breeding Research Centre, National Dairy Research Institute, Karnal, Haryana, India 3 Dairy Cattle Nutrition Division, National Dairy Research Institute, Karnal, Haryana, India 1 79 Buffalo Bulletin (March 2015) Vol.34 No.1 to two experimental groups with 10 animals in each group; group 1 (C) was provided 20% higher nutrients than Kearl’s Feeding Standard (Chauhan et al., 2000) and group 2 (T) was provided 20% higher nutrients than Kearl’s Feeding Standard (Chauhan et al., 2000) along with vitamin E { (2000 IU from 60 days prepartum to 30 days postpartum and 1500 IU from 30 to 60 days postpartum) vitamin E 50% powder, Vet Chem } supplementation (Panda et al., 2006) and 50 gm of commercial mineral mixture (Agrimin, Agrivet Farm Care Division) to meet the expected requirements of the minerals. The buffaloes used for the investigation were kept in conventional barns throughout the prepartum period and were shifted to calving pens 2 weeks prior to expected date of parturition for extra care and attention upto 5 days after parturition. After that they were shifted to loose housing and group management system where other lactating buffaloes were kept. The animals under investigation were body condition scored on entry in the experimental groups, on the day of parturition and at the end of the experiment. The condition-scoring chart formulated by Prasad (1994) was adopted in the present study. The fortnightly body weight of each animal was recorded early in the morning between 7.30 a.m. to 8.30 a.m. before providing the animals with any feeding stuff or water, using electronic weighing machine during the experimental period. Weight of calves at birth and 90 days was recorded. Effect of vitamin E and mineral supplementation BCS, body weight and performance of calves was calculated by t test using Systat 6 software package. (1997) reported loss of BW at parturition. Previous studies have showed that body condition scores (BCS) at calving and body condition loss in early lactation were related to health (Dann et al., 2005), reproductive performance (Baruselli et al., 2001; Pryce et al., 2001; Buckley et al., 2003; Shrestha et al., 2005), fertility (Balakrishnan et al., 1997; Contreras et al., 2004; Roche, 2006) and milk yield (Ramasamy and Singh, 2004; Holter et al., 1990). The maintenance of an optimal body condition score relative to lactation stage, milk yield, nutrition and health status is perhaps the most important aspect of dairy buffalo management that facilitates a healthy transition from pregnancy to lactation. Supplementation of dams has been observed to enhance secretion of immune proteins, immunoglobulin (Ig) in colostrum by 80%, and improve growth and immune status and growth performance of the calves (Sikka et al., 2002; Sikka and Lal, 2006). In general, mineral deficiencies have been associated with altered metabolic profile leading to most periparturient disorders in buffaloes. Thus such disorders could probably be prevented by addressing to the basic etiology through balanced feeding and mineral supplementation during advanced pregnancy and early post-partum period, when the animals are highly prone to stress of heavy nutrient demand and drain (Mandali et al., 2002). There is lack of information regarding vitamin E and mineral supplementation on BCS, body weight and calf performance, therefore, the present study was conceived to fulfill the gap. MATERIALS AND METHODS Twenty Murrah buffaloes 60 days prepartum were selected and randomly assigned 80 Buffalo Bulletin (March 2015) Vol.34 No.1 RESULTS AND DISCUSSION adnexia (membranes and foetal fluids). It seemed that vitamin E and mineral supplementation tended to improve body reserves which resulted in lesser body weight loss postpartum than the control animals. Similar trends in body weight changes following UMMB supplementation have been reported in buffaloes (Brar and Nanda, 2007) and feeding cationic or anionic diets in cattle (Gulay et al., 2008). Body weight loss at parturition is physiological owing to expulsion of foetus, foetal fluids and placenta (Brar and Nanda, 2007) and stress of parturition. The weight loss thereafter is primarily due to mobilization of body reserves for fulfilling the demands for maintenance and production of milk (Grummer, 2006). Body weight loss could be curtailed and an early body weight rise could be commenced through supplementary feeding in both pre and postpartum period (Sharma et al., 1993). Adequate nutrition and management are recommended during the last trimester of pregnancy to minimize body weight loss or enhance body weight recovery after calving (Prakash et al., 1990; Chauhan et al., 2000). Body weight changes from pre to postpartum period The supplemented buffaloes had higher body weight gains during 60 days prepartum period than the control group (Table 1 and 2). Thereby it fell sharply at parturition and continued to decline over the next 2 months. Compared to controls, the cumulative body weight loss in the supplemented buffaloes was less during the postpartum period. However, the differences in body weight at all stages were non significant but the supplemented group had higher body weight gains and per day body weight gain in the prepartum period and lower body weight losses and per day body weight loss postpartum than the control group at all the stages, reflecting improvement and beneficial effect due to Vitamin E and mineral supplementation. Supplementing prepartum Vitamin E and minerals appears to have helped in modulating pre and postpartum body weight changes. Also, it was observed that out of the total body weight loss (60.11 ± 3.71 vs. 62.67 ± 2.80) at parturition, calf birth weight was only 62.35 ± 2.33% and 57.19 ± 2.29%, respectively in the supplemented group and control group, reflecting rest loss to foetal Body condition score Body condition score reflected changes in Table 1. Performance of vitamin E and mineral supplemented buffaloes. Parameters Bwt gain prepartum (Kg) Per day gain prepartum (kg) Wt loss parturition (Kg) Calf wt % parturition loss Calf wt % buffalo wt Bwt loss postpartum (Kg) Per day loss postpartum (Kg) Supplemented 45.44 ± 4.94 0.76 ± 0.08 60.11 ± 3.71 62.35 ± 2.33 6.06 ± 0.25 33.22 ± 11.04 0.67 ± 0.19 * - Significant (P<0.05); ** - Significant (P<0.01) 81 Control 39.44 ± 2.99 0.66 ± 0.07 62.67 ± 2.80 57.19 ± 2.29 5.70 ± 0.23 41.11 ± 8.56 1.04 ± 0.05 Initial 625.22±9.93 650.67±21.39 3.89±0.14 3.88±0.18 36.89±1.20 35.56±1.33 Treatment Supplemented Control Supplemented Control Supplemented Control * - Significant (P<0.05); ** - Significant (P<0.01) BCS – Body Condition Score Calf weight (kg) BCS Body weight (Kg) Parameters Just before parturition 670.67±7.14 690.11±21.95 4.01±0.11 4.04±0.17 - Just after parturition 610.56±8.14 627.11±21.38 576.00±9.36 593.11±22.99 - 30 days 577.33±10.32 583.56±21.90 3.62±0.15 3.69±0.17 - 60 days Table 2. Effect of vitamin E and mineral supplementation on body weight, BCS, calf weight and milk yield in buffaloes. 71.83±4.13 65.57±4.43 90 days Buffalo Bulletin (March 2015) Vol.34 No.1 82 Buffalo Bulletin (March 2015) Vol.34 No.1 CONCLUSION the body weight in both supplemented and control buffaloes (Table 2). BCS increased upto parturition and thereafter decreased in both the groups. The prepartum and postpartum changes in body weights were not apparently marked to be reflected in BCS changes which were almost similar (0.12 vs. 0.16 prepartum and 0.39 vs. 0.35 postpartum) in both supplemented and control groups, respectively. Lack of any gross apparent difference of changes could be due to better and high plane of nutrition available to both groups. Lower milk production compared to cattle may be a reason for not being affected by negative energy balance to be reflected in BCS. Also it may be attributed to higher protein and energy utilizing efficiencies in buffaloes as compared to cattle at similar fat corrected milk production level, plane of energy and protein nutrition, body size and weight change (Paul et al., 2003) which could be the reason for less negative energy balance reflected in buffaloes during postpartum period. During peripartum period vitamin E and mineral supplementation seems to improve the performance of buffaloes and their calves. Body condition score (BCS) is a logistic tool for assessment of nutritional status of animal and management for optimal performance. The maintenance of an optimal body condition score relative to lactation stage, milk yield, nutrition and health status is perhaps the most important aspect of dairy cow management that facilitates a healthy transition from pregnancy to lactation. REFERENCES Balakrishnan, M., K.P. Ramesha and G.P. Chinnaiya. 1997. Effect of postpartum body condition loss on performance in crossbred cows - an assessment through body condition scoring. Indian J. Dairy Sci., 50(5): 393-397. Baruselli, P.S., V.H. Barnabe, R.C. Barnabe, J.A. Visintin, J.R. Molero-Filho and R. Porto. 2001. Effect of body condition score at calving on postpartum reproductive performance in buffaloes. Buffalo J., 1: 5365. Brar, P.S. and A.S. Nanda. 2007. Effect of prepartum supplementary feeding of urea molasses multi-nutrient block on postpartum production and fertility in dairy buffaloes. Indian J. Anim. Sci., 77(10): 965-969. Buckley, F., K. O’Sullivan, J.F. Mee, R.D. Evans and P. Dillon. 2003. Relationships among milk yield, body condition, cow weight and reproduction in Spring-Calved HolsteinFriesians. J. Dairy Sci., 86: 2308-2319. Chauhan, T.R., N.D. Sharma, S.S. Dahiya, B.S. Performance of the calves Calves born to mineral and vitamin E supplemented buffaloes performed well in terms of their birth weight and body weight gain upto 90 days and calf weight to dam weight ratio. However the difference between the two groups was non-significant but the supplemented group had higher values than the control group which could be attributed to vitamin E and mineral supplementation. Supplementation of dams has been observed to enhance secretion of immune proteins, immunoglobulin (Ig) in colostrum by 80%, and improve growth and immune status of the calves (Sikka et al., 2002; Sikka and Lal, 2006). 83 Buffalo Bulletin (March 2015) Vol.34 No.1 and K.S. Christi. 2002. Biochemical profile in buffaloes with periparturient reproductive and metabolic disorders. Indian J. Anim. Reprod., 23(2): 130-134. Panda, N., H. Kaur and T.K. Mohanty. 2006. Reproductive performance of dairy buffaloes supplemented with varying levels of vitamin E. Asian Austral. J. Anim. Sci., 19(1): 19. 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Kaur and V.P. Varshney. 2003. Studies on serum micromineral, hormone and vitamin profile and its effect on production and therapeutic management of buffaloes in Haryana state of India. Asian Austral. J. Anim., 16(4): Punia, O.K. Hooda and D. Lall. 2000. Effect of plane of nutrition on nutrient utilization in pregnant buffalo heifers. Buffalo J., 16(1): 47-52. Contreras, L.L., C.M. Ryan and T.R. Overton. 2004. Effects of dry cow grouping strategy and prepartum body condition score on performance and health of transition dairy cows. J. Dairy Sci., 87:517-523. Dann, H.M., D.E. Morin, G.A. Bollero, M.R. Murphy and J.K. Drackley. 2005. Prepartum intake, postpartum induction of ketosis, and periparturient disorders affect the metabolic status of dairy cows. J. Dairy Sci., 88: 32493264. Grummer, R.R. 2006. Optimisation of transition period energy status for improved health and reproduction. In Proceedings of 24th World Buiatrics Congress, Nice, France. Gulay, M.S., M.J. Hayen, K.C. Bachman and H.H. Head. 2008. Prepartum feeding of cationic and anionic diets to Holstein cows given 30 to 60 day dry periods: comparison of dry matter intake, physiological measures and milk production. Asian Austral. J. Anim., 21(1): 83-89. Holter, J.B., M.J. Slotnick, H.H. Hayes and C.K. Bozak. 1990. Effect of prepartum dietary energy on condition score, postpartum energy, nitrogen partitions, and lactation production responses. J. Dairy Sci., 73: 3502-3511. Kertz, A.F., L.F. Reutzel, B.A. Barton and R.L. Ely. 1997. Body weight, body condition score, and wither height of prepartum Holstein cows and birth weight and sex of calves by parity: a database and summary. J. Dairy Sci., 80: 525-529. Mandali, G.C., P.R. Patel, A.J. Dhami, S.K. Rawal 84 Buffalo Bulletin (March 2015) Vol.34 No.1 519-528. Sharma, V.K., R.C. Gupta, S.K. Mishra, N.K. Khurana and S.K. Khar. 1993. An abattoir study of lesions in buffalo genetelia. Indian Vet. J., 70: 1165. Shrestha, H.K., T. Nakao, T. Suzuki, M. Akita and T. Higaki. 2005. Relationships between body condition score, body weight and some nutritional parameters in plasma and resumption of ovarian cyclicity postpartum during pre-service period in high-producing dairy cows in a subtropical region in Japan. Theriogenology, 64: 855-866. Sikka, P. and D. Lal. 2006. Studies on vitamin mineral interactions in relation to passive transfer of immunoglobulin in buffalo calves. Asian Austral. J. Anim. Sci., 19(6): 825. Sikka, P., D. Lall, U. Arora and R.K. Sethi. 2002. Growth and passive immunity in response to micronutrient supplementation in newborn calves of Murrah buffaloes given fat soluble vitamins during late pregnancy. Livest. Prod. Sci., 75: 301-311. Yildiz, H., E. Kaygusuzoglu and M. Aydin. 2006. Serum mineral status during pregnancy in cows. Indian J. Anim. Sci., 76(8): 591-595. 85 Buffalo Bulletin (March 2015) Vol.34 No.1 Original Article STUDY ON MICRO-MINERAL STATUS OF BUFFALOES DURING PERIPARTUM PERIOD IN DIFFERENT SEASON H.M. Khan1, T.K. Mohanty2, M. Bhakat2, A.K. Gupta2, A.K. Tyagi3 and G. Mondal3 components of various enzymatic systems and important for good health and requirements vary with the physiological status of the animal (Borghese, 2005). In buffaloes minimum but long-term deficiencies during dry period have been known to cause impaired health during lactation (Campanile et al., 1997). Mineral status of animals is a direct reflection of their presence, absence, deficiency or excess in soil and fodder. Under tropical Indian conditions, mineral deficiency problems have been recognized to be very common causing production and reproduction problems unless proper dietary supplementations are provided to save economic losses (Sharma et al., 2003). The Cu and Zn deficiencies have been incriminated for loss of production and reproduction, irregular cycles, cycle extension, subestrus, difficult delivery, retained placenta, abortions, estrus prevention, congenital abnormalities/disorders, repeat breeding and early embryonic deaths (McDowell, 1992; Balakrishnan and Balagopal, 1994; Dutta et al., 2001; Sharma et al., 2005; Prajapati et al., 2005). The normal blood values of Mn in cattle have been established to be 18-19 μg/dl (Sharma et al., 2005). Mn deficiencies have been found to suppress conception rates, delay estrus, cause abortions, deformed calves at birth and increase occurrence of cystic ovaries ABSTRACT Two groups of 15 Murrah buffaloes each, expected to calve in winter and summer season were selected for monitoring during peripartum period to have an overview of the herd micro-mineral status. There was significant difference in plasma concentration of the Zn on day 30 prepartum, calving day and day 60 postpartum (P<0.05); Cu on day 60 prepartum (P<0.05) and Mn at all the stages (P<0.01).The summer season calvers had higher levels at all the stages. After evaluating the herd status, it was clear that buffaloes were either deficient or had imbalance in nutrients in winter season calvers resulting into wide variation in reproductive performance. Herd status regarding mineral status need to be evaluated from time to time in different seasons to achieve set targets in terms of reproduction and production performance by adjusting feeding schedule. Keywords: Murrah buffalo, Zn, Cu, Mn, season INTRODUCTION Micro minerals are critical functional Sheep Research Station, Faculty of Veterinary Science and Animal Husbandry, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir (SKUAST-K), E-mail: hilal.ndri@gmail.com, bhakat. mukesh@gmail.com 2 Artificial Breeding Research Centre, National Dairy Research Institute, Karnal, Haryana, India 3 Dairy Cattle Nutrition Division, National Dairy Research Institute, Karnal, Haryana, India 1 86 Buffalo Bulletin (March 2015) Vol.34 No.1 per day for body maintenance) and ad libitum green fodder (berseem, oat, mustard and maize). All the experimental buffaloes were monitored regularly for estrus by visual observation and by parading of vasectomized bull in morning and evening hours. Animal were confirmed for heat by rectal palpation and inseminated with frozen semen by two inseminations at 12 h intervals. Buffaloes not returning to estrus after 21 days of insemination were examined per rectum on 45th (Sharma et al., 2005). A lower level of manganese and copper has been reported in anestrus buffaloes when compared with those exhibiting estrus (Patil and Deshpande, 1979; Naidu and Rao, 1982; Agarwal et al., 1985; Singh and Vadnere, 1987). Thus such disorders could probably be prevented by addressing to the basic etiology through balanced feeding and mineral supplementation during advanced pregnancy and early post-partum period, when the animals are highly prone to stress of heavy nutrient demand and drain (Mandali et al., 2002). Satisfactory conception rates have been attributed to combined effect of mineral and vitamin supplementation because of their positive effect on steroid synthesis, release, follicular growth and symptoms of ovulatory oestrus (Srivastava, 2008). During different seasons availability of feed and fodder changes thereby changing the availability of certain nutrients which may have direct or indirect effect on productive and reproductive performance of the buffaloes. Therefore envisages evaluation of herd status in terms of micro-mineral profiling of buffaloes during peripartum from time to time for further decisions for improving the herd performance. day for pregnancy confirmation. Plasma Biochemical Assay The blood samples were collected from jugular vein into heparinized (20 IU heparin/ ml blood) tubes from all experimental animals at fortnightly interval from 60 days prepartum to 60 days postpartum. Immediately after sampling the blood was centrifuged at 3000 rpm for 15 to 20 minutes and the plasma was separated and stored frozen (-20°C) until analyzed. Following micronutrients in control as well as in experimental groups were estimated with the help of Atomic absorption Spectrophotometer (Model PU9100X Atomic absorption Spectrophotometer, Philips). The procedure described in AAS (1988) manual for preparation of stock and standard solutions and choice of instrumental conditions were followed. Effect of season of calving on micro-mineral status was calculated by t test, using Systat 6 software package. MATERIALS AND METHODS The present study was conducted on 30 pregnant dry Murrah buffaloes maintained at Cattle Yard of National Dairy Research Institute (NDRI), Karnal and divided into 15 animals each as per expected day of calving in winter(January to March) and summer (April to July) season. The herd was kept under loose housing and group management system following standard managemental practices. The nutrient requirements of all the animals were mostly met through limited concentrates (1.5 kg RESULTS AND DISCUSSION In the present investigation 15 buffaloes each expected to calve in winter and summer season were randomly selected during prepartum period to have an overview of micro-mineral status of the 87 Buffalo Bulletin (March 2015) Vol.34 No.1 herd. Mineral status of plasma is a direct reflection of their presence, absence, deficiency or excess in soil and fodder. Under tropical Indian conditions mineral deficiency and imbalance problems have been recognized to be very common causing production and reproduction problems unless proper dietary supplementations are provided. Correction of deficiencies and imbalance by balanced mineral supplementation has been shown to produce a marked response saving huge economic losses due to production and reproduction losses (Sharma et al., 2003). Plasma Zn, Cu and Mn were estimated at monthly interval in both the groups. The results obtained are presented in the Table 1 for interpretation from 60 days prepartum to 60 days postpartum taking 0 day as the day of calving. day 30 postpartum in summer season. There was significant difference in plasma concentration of the Zn on day 30 prepartum, calving day and day 60 postpartum (P<0.05).The differences in concentration at all other stages was non significant but summer season had higher levels than the winter season at all the stages reflecting better availability of fodders having sufficient nutrients required for optimum performance. Decrease in plasma Zn concentration in buffaloes during late gestation and parturition has also been reported by House and Bell (1993) and Panda (2003). Zn accretion rate in the conceptus in late pregnancy is 11.7 mg/day which may be reason for lower level of Zn before parturition. Zn deficiency has been incriminated for impaired reproductive performance, decreased fertility and abnormal estrus in cows and decreases cell mediated immunity (Sharma et al., 2005). Zinc is a critical nutrient of immunity, being involved in so many immune mechanisms including cell-mediated and antibody-mediated immunity, thymus gland function and thymus hormone action. When zinc levels are low, the number of T cells is reduced and many white blood functions critical to the immune Plasma Zn Plasma Zn concentration was lowest on the day of calving in winter season. The Zn concentration dropped on day 30 prepartum and day of calving and showed an increasing trend thereafter in winter season, whereas it showed an increasing trend at day 30 prepartum and then decreased upto Table 1. Seasonal effect on mineral status in Murrah buffaloes. Micro Mineral Zn† Mn† Cu† Season Winter Summer Winter Summer Winter Summer Prepartum -60d -30d 1.46±0.27 1.13±0.17* 1.88±0.29 2.01±0.36* 0.26±0.04** 0.25±0.03** 0.60±0.05** 0.45±0.05** 0.90±0.10* 0.809±0.072 1.45±0.18* 1.006±0.224 0d 0.90±0.21* 1.73±0.32* 0.17±0.03** 0.43±0.04** 0.749±0.061 0.833±0.094 † – ppm; * - Significant (P<0.05); ** - Significant (P<0.01) 88 Postpartum 30d 60d 0.91±0.10 1.00±0.09* 1.05±0.21 1.40±0.15* 0.24±0.02** 0.29±0.02** 0.49±0.06** 0.54±0.05** 0.984±0.119 1.047±0.086 1.002±0.172 1.076±0.119 Buffalo Bulletin (March 2015) Vol.34 No.1 Plasma Mn Plasma Mn levels followed a decreasing trend upto parturition and followed increasing trend following parturition in both seasons. The drop in the Mn concentration during prepartum due to increasing demands of growing fetus (House and Bell, 1993) and utilization for improving antioxidant status. There was highly significant difference (P<0.01) in plasma concentration of the Mn at all the stages and summer season had higher levels than the winter season at all the stages reflecting better availability of feeds and fodders having sufficient nutrients required for optimum performance. This is in agreement with the findings of Panda (2003), who has reported similar trend in Mn concentration but reported higher levels than the present findings. Mn deficiency has been found to suppress conception rates, delay estrus, cause abortions, deformed calves at birth and increase occurrence of cystic ovaries (Sharma et al., 2005). The deficiency or imbalance of critical factors has either immediate effects on health, productive and reproductive processes or the effects may be covert and recognized after a prolonged period. The effects depend on the nature of the factor, extent of deficiency or imbalance, duration and physiological status of the animal. In buffaloes minimum but long-term deficiencies during dry period have been known to cause impaired health during following lactation (Campanile et al., 1997). Various workers have revealed a direct correlation of mineral status of the animals with their physiological status and observed disorders and incriminated altered levels of minerals and enzymes for loss of production and reproduction (Patil and Deshpande, 1979; Naidu and Rao, 1982; Agarwal et al., 1985; Singh and Vadnere, 1987). Inactive ovaries, anestrus and poor conception rates have been recognized as the most common response are severely lacking. Like vitamin C, zinc also possesses direct antiviral activity, including activity against several viruses. It is also present in members of a class of proteins called the metallothioneins that are believed to provide antioxidant protection by scavenging free radicals (Borghese, 2005). Plasma Cu Plasma Cu levels followed a particular trend in both the groups. It started declining upto calving and thereafter there was an increase in its concentration. The extent of decrease in Cu concentration at parturition was more in comparison to other minerals due to more accretion rate of Cu in the conceptus (House and Bell, 1993). There was significant statistical difference in plasma concentration of the Cu on day 60 prepartum (P<0.05), however, the differences in concentration at all other stages was non significant but summer season had higher levels than the winter season at all the stages reflecting better availability of fodders having sufficient nutrients required for optimum performance. Panda (2003) also found the similar trend in Cu concentration but reported higher levels than the present findings. Cu deficiency has been incriminated for poor performance, reduced fertility in animals attributed to poor conception rates, anoestrus and foetal resorption. It has also been associated with impaired immune response and failure to respond to treatment (Sharma et al., 2005). The Cu and Zn deficiencies have been incriminated for loss of production and reproduction, irregular cycles, cycle extension, subestrus, difficult delivery, retained placenta, abortions, estrus prevention, congenital abnormalities/disorders and early embryonic deaths (McDowell, 1992; Dutta et al., 2001) and repeat breeding (Dhami et al., 2003). 89 Buffalo Bulletin (March 2015) Vol.34 No.1 expressions consequent upon the deficiency of Cu, Zn and Mn (Khasatiya et al., 2005). Also, imbalance between minerals has been incriminated as a possible cause for repeat breeding (Balakrishnan and Balagopal, 1994; Prajapati et al., 2005; Kalita and Sarmah, 2006). Requirements that are based on measures of immune function have been reported to be higher than those that are based on production or reproduction (Weiss, 1998). The amount of minerals required for optimal immune function may exceed that amount which will prevent more classical deficiency signs. Profilo metabolico nel bufalo. Bubalus Bubalis, (Suppl. 4): 236-249. Dhami, A.J., P.M. Patel, P.D. Lakum, V.P. Ramani and M.B. Pande. 2003. Micronutrient profile of blood plasma in relation to age and reproduction status of Holstein Friesian cattle. Indian J. Anim Nutr., 20: 206-211. Dutta, A., B. Baruah, B.C. Sharma, K.K. Baruah and R.N. Goswami. 2001. Serum macromineral profiles in cyclic and anoestrus local heifers in Brahmaputra valley of Assam. Indian J. Anim. Res., 35: 44-46. House, W.A. and A.W. Bell. 1993. Mineral accretion in the fetus and adnexa during late gestation in Holstein cows. J. Dairy Sci., 76(10): 2999-3010. Kalita, D.J. and B.C. Sarmah. 2006. Mineral profile and serum enzyme activities of normal cycling and repeat breeding cows. Indian J. Anim. Res., 40(1): 49-51. Khasatiya, C.T., A.G. Dhami, V.P. Ramani, F.P. Savalia and F.S. Kavani. 2005. Reproductive performance and mineral profile of postpartum fertile and infertile Surti buffaloes. Indian J. Anim. Reprod., 26(2): 145-148. Mandali, G.C., P.R. Patel, A.J. Dhami, S.K. Rawal and K.S. Christi. 2002. Biochemical profile in buffaloes with periparturient reproductive and metabolic disorders. Indian J. Anim. Reprod., 23(2): 130-134. McDowell, L.R. 1992. Minerals in Animal and Human Nutrition. Academic Press London. Naidu, K.V. and A.R. Rao. 1982. A study on the etiology of anestrus in crossbred cows. Indian Vet. J., 59: 781. Panda, N. 2003. Optimisation of vitamin E doses for improved immunity and udder health in Murrah buffaloes. Ph. D. Thesis, National CONCLUSION There was significant difference in plasma concentration of the Zn on day 30 prepartum, calving day and day 60 postpartum (P<0.05); Cu on day 60 prepartum (P<0.05) and Mn at all the stages (P<0.01).The summer season calvers had higher levels at all the stages. REFERENCES Agarwal, S.K., N.N. Pandey and U. Shanker. 1985. Serum protein, inorganic phosphorous and blood glucose in relation to different phases of reproduction in crossbred cattle. Indian J. Anim. Reprod., 6: 23-25. Balakrishnan, V. and R. Balagopal. 1994. Serum calcium, phosphorous, magnesium, copper and zinc level in regular breeding buffaloes. Indian Vet. J., 71: 23-25. Borghese, A. 2005. Buffalo Production and Research. REU technical series 67. FAO, United Nations, Rome. Campanile, G., R. Di Palo and A. D’Angelo. 1997. 90 Buffalo Bulletin (March 2015) Vol.34 No.1 Dairy Research Institute, Karnal, India. Patil, R.V. and B.R. Deshpande. 1979. Changes in body weight, blood glucose and serum proteins in relation to the appearance of postpartum oestrus in Gir cows. J. Reprod. Fertil., 57: 25-27. Prajapati, S.B., D.J. Ghodasara, B.P. Joshi, K.S. Prajapati and V.R. Jani. 2005. Etiopathological study of endometritis in repeat breeder buffaloes. Buffalo J., 2: 145-165. Sharma, M.C., C. Joshi and M. Kumar. 2005. Micro mineral deficiency disorders and treatment: A review. Indian J. Anim. Sci., 75(2): 246257. Sharma, M.C., S. Raju, C. Joshi, H. Kaur and V.P. Varshney. 2003. Studies on serum micromineral, hormone and vitamin profile and its effect on production and therapeutic management of buffaloes in Haryana state of India. Asian Austral. J. Anim., 16(4): 519-528. Singh, S. and S.V. Vadnere. 1987. Induction of oestrus by supplementation of different minerals in postpartum anestrus crossbred cows. Indian J. Anim. Reprod., 8: 46. Srivastava, S.K. 2008. Effect of mineral supplement on oestrus induction and conception in anoestrus crossbred heifers. Indian J. Anim. Sci., 78(3): 275-276. Weiss, W.P. 1998. Requirements of fat-soluble vitamins for dairy cows: a review. J. Dairy Sci., 81: 2493-2501. 91 Buffalo Bulletin (March 2015) Vol.34 No.1 Original Article LIFETIME PERFORMANCE OF MURRAH BUFFALOES HOT AND HUMID CLIMATE OF TAMIL NADU, INDIA A.K. Thiruvenkadan*, S. Panneerselvam and R. Rajendran Keywords: herd life, Murrah, lifetime performance, tropical climate ABSTRACT Study on lifetime production traits Murrah buffaloes was carried out at Central Cattle Breeding Farm, Alamadhi, Tamil Nadu, India by collecting milk production and reproduction records of Murrah buffaloes over a period of 28 years (i.e., from 1976 to 2003). The overall means (± SE) for longevity, productive herd life, lifetime milk production, milk yield per day of longevity, milk yield per day of productive herd life and lifetime calf crop of Murrah buffalo cows were 3078.4 ± 46.3 kg, 1520.7 ± 46.2 kg, 5441.6 ± 206.0 kg, 1.41 ± 0.04 kg, 2.89 ± 0.05 and 3.00 ± 0.08 respectively. The study revealed that the age at first calving had significant (P<0.05) effect on longevity and highly significant (P<0.01) effect on productive herd life, lifetime milk production, milk yield per day of longevity and lifetime calf crop. The coefficients of variation of most of the lifetime production traits were very high and they generally ranged between 34.0 and 78.2 percent. Therefore, selection for reducing the age at first calving through better feeding and breeding management practices would result in improvement in different lifetime production traits in Murrah buffaloes. Based on the lifetime performance study, it may be concluded that Murrah buffaloes performed satisfactorily at this hot and humid climatic conditions of Tamil Nadu. INTRODUCTION Dairy animal production viz. buffalo and cattle rearing are now considered as one of the important income generating activities in rural India. As a policy the system of grading up of non-descript buffaloes and cross breeding of cattle have been adopted to alter the genetic makeup of the native stock in India. This tool has had India, transverse a long way in the global scenario of milk production. Murrah breed is the finest genetic material of milk producing buffalo not only in India but also probably in the world. In India, the buffalo is the principal dairy animal. Although, the breedable buffaloes are almost one-third in number as compared to cattle, buffaloes contribute in excess of 50 percent (i.e. 54.47 percent) of the total milk produced in the country. Their contribution in terms of meat is also significant (Report, 2006). The national buffalo breeding policy envisages selective breeding for conservation and improvement of buffalo breeds in their home tract and grading up of non-descript buffaloes with recognised buffalo breeds viz. Murrah, Nili-Ravi and Surti. Murrah buffaloes are originally from Haryana and Punjab and they have been used extensively throughout Department of Animal Genetics and Breeding, Veterinary College and Research Institute, Orathanadu, Tamil Nadu, India, *E-mail: drthirusiva@gmail.com 92 Buffalo Bulletin (March 2015) Vol.34 No.1 approximately 20 km from the farm. The mean annual maximum and minimum temperatures were 33.0o and 24.7o C respectively. The mean relative the country to upgrade the non-descript buffalo stock to improve the milk production. Although, no scientific evaluation of the grading up scheme has been made, large increase in share of buffalo milk to total milk production over time (from 40.03 percent in 1995-96 to 54.47 percent in 2003-2004) suggest the effectiveness of grading up scheme for the genetic improvement of non-descript buffaloes (Taneja, 1998; Report, 2006). The age at first calving had appreciable effect on the lifetime production traits in Dairy cattle and buffaloes (Lin et al., 1988). Thus dairyman would have a considerable interest in the relationship of these traits in lifetime milk production and other lifetime production traits. In addition, the information on lifetime production parameters of Murrah buffaloes at variable climatic conditions is vital for overall assessment of breed performance. Hence, this study has been made at Central Cattle Breeding Farm, Alamadhi, Tamil Nadu, India to assess the lifetime performance of Murrah buffaloes at hot and humid climatic conditions of Tamil Nadu. humidity ranged from 69.2 to 76.2 percent. This region recorded an average annual rainfall of 1446.6 mm received in 58.6 rainy days. The data for the estimation of lifetime production traits were available for 664 Murrah heifers and cows born and bred in this farm. The different categories of Murrah buffaloes were maintained under intensive system of management and roughage in the form of green fodder and paddy straw was provided. In addition, concentrate mixture was provided as per the standard requirements. Calves were weaned at birth and pail feeding was practised. The lifetime production traits considered in the study were longevity (number of days from birth to disposal of the heifer/ cow either due to culling or death), productive herd life (number of days from first calving to till death or disposal of the cow from the herd), lifetime milk production (total milk produced by the cow during its productive herd life), milk yield per day of productive herd life, milk yield per day of longevity and lifetime number of calf crop. The different lifetime production traits were analysed by including age at first calving as a fixed effect. Few workers (El-Arian and Tripathi, 1988; Kuralkar and Raheja, 2000) considered the influence of period and season of first or last calving as a fixed non-genetic factors in addition to age at first calving. Since, lifetime traits pass through different periods and seasons and classification based on either first or last period and season of calving had no appreciable effect, therefore, the same was not considered for the present analysis. The classification was made as ≤1250, >1250 to 1400, >1400 to 1550, >1550 to 1700, >1700 to 1850 and >1850 days. The following fixed effect model was used for the analysis of lifetime production MATERIALS AND METHODS Milk production and reproduction records of Murrah buffaloes were collected over a period of 28 years (1976 to 2003) from Central Cattle Breeding Farm, Alamadhi, Tamil Nadu, India. This farm is located approximately at 13o N latitude and 80o E longitude at Alamadhi village about 30 km from Chennai city on Red hills to Tiruvallur road. It is situated at an altitude of about 20 metres above mean sea level. The farm covers an area of 397.73 hectares with a total cultivated area of about 84 hectares. The climate is generally hot, humid and tropical in nature. The coast of Bay of Bengal is 93 Buffalo Bulletin (March 2015) Vol.34 No.1 The longevity observed in ≤1250 days age group was significantly different from >1400 to 1550 and >1700 and 1850 days groups. The significant influence of age at first calving on the variation of longevity is in agreement with the findings of Kuralkar and Raheja (2000). However, Gowane and Tomar (2007) reported non-significant effect of age at first calving on this trait. traits: Yij = μ + pi + eij . Where, Yij=lifetime lactation character of the jth buffalo cow that calved in the ith age at first calving group, μ= overall mean when equal subclass frequencies exist, pi=effect of ith age at first calving group (i =1 to 6) and eijk=random errors NID (0, σ2e). LSMLMW and MIXMDL PC-2 VERSION computer programme of Harvey (1990) was used to study the effect of age at first calving on different lifetime production traits and the means were compared using Duncan’s multiple range test. The estimation of heritability and genetic correlation between different lifetime production traits were also obtained by REML method using Derivative Free Restricted Maximum Likelihood (DFREML) software package of Meyer (1997). Productive herd life The overall mean productive herd life of 1520.7 ± 46.2 days observed in Murrah buffaloes in the present herd was within the range of values reported for other Murrah buffalo herds located at different places in India (Kalsi and Dhillon, 1982; El-Arian and Tripathi, 1988). However, higher than the present estimates were also observed in some studies (El-Arian and Tripathi, 1988; Rao and Rao, 1996; Sasidhar et al., 2000). Raheja (1998) and Gowane and Tomar (2007) reported lower values than the present estimates. The age at first calving had highly significant (P<0.01) effect on this trait. The productive herd life generally reduced as the age at first calving increases. The productive herd life decreased sharply between >1400 to 1550 and >1550 and 1700 days and again between >1700 to 1850 and >1850 days groups. It was the lowest in >1850 days group and they differed significantly (P<0.05) with others. Heifers with lower age at first calving had an advantage over those freshening at an older age throughout all six opportunities groups. Lin et al. (1988) also found similar finding in dairy cattle and concluded that by reducing the age at first calving the profitability of the farm could be improved by increasing lifetime milk production and milk yield per day of herd life. Hence, every effort should be made to reduce the age at first freshening either by reducing the age at breeding alone or in combination with increasing RESULTS AND DISCUSSION The means (±SE) for different lifetime production traits of Murrah buffaloes are presented in Table 1. Longevity Longevity is one among the lifetime production traits and higher longevity is one of the indications of fit and healthy herd. A longer mean longevity increases profitability, because it decreases replacement costs and increases the proportion of the most productive mature age groups in the herd. The average longevity (3078.4 ± 46.3 days) observed in Murrah buffaloes in the current study was comparable to the values reported earlier for Murrah buffaloes (Kuralkar and Raheja, 2000; Sasidhar et al., 2000). However, ElArian and Tripathi (1988) observed higher value of 3531.29 ± 109.68 days for Murrah buffaloes maintained at MDF, Ambala. The age at first calving had significant (P<0.05) effect on this trait. 94 95 Productive herd life (days) 1520.7 ± 46.2 (664) ** 1721.8 ± 105.5b (113) 1625.4 ± 90.3b (154) 1726.7 ± 86.2b (169) 1550.8 ± 125.3b (80) 1526.7 ± 124.6b (81) 972.6 ± 137.0a (67) Longevity (days) 3078.4 ± 46.3 (664) * 2873.1 ± 105.7a (113) 2954.2 ± 90.5ac (154) 3198.2 ± 86.4bc (169) 3175.8 ± 125.6ab (80) 3294.7 ± 124.8b (81) 2974.6 ± 137.3ab (67) 5441.6 ± 206.0 (553) ** 6130.3 ± 454.0d (95) 5734.8 ± 383.7c (133) 6158.9 ± 366.2d (146) 5293.6 ± 553.1b (64) 6223.0 ± 517.9d (73) 3109.1 ± 682.8a (42) Lifetime milk production (kg) 1.41 ± 0.04 (509) ** 1.66 ± 0.08b (95) 1.56 ± 0.07b (123) 1.61 ± 0.07b (132) 1.39 ± 0.10b (61) 1.40 ± 0.10b (59) 0.85 ± 0.13a (39) 2.89 ± 0.10 (95) 2.95 ± 0.09 (123) 2.96 ± 0.09 (132) 2.85 ± 0.13 (61) 2.98 ± 0.13 (59) 2.69 ± 0.16 (39) 2.89 ± 0.05 (509) Milk yield per day of productive herd life (kg) Figures in parentheses are the number of observations. Means with at least one common superscript within classes do not differ significantly (P≥0.05). ** P<0.05, ** P<0.01. >1850 days >1700 to 1850 days >1550 to 1700 days >1400 to 1550 days >1250 to 1400 days ≤ 1250 days Age at first calving Overall mean Effect Milk yield per day of longevity (kg) Table 1. Least-squares means (±SE) for different lifetime production traits of farmbred Murrah buffaloes. 3.00 ± 0.08 (755) ** 3.56 ± 0.19b (119) 3.27 ± 0.16b (172) 3.31 ± 0.15b (193) 2.93 ± 0.22b (91) 2.96 ± 0.21b (102) 1.95 ± 0.24a (78) Lifetime calf crop Buffalo Bulletin (March 2015) Vol.34 No.1 Buffalo Bulletin (March 2015) Vol.34 No.1 Table 2. Estimates of genetic (rG), phenotypic (rP) and environmental (rE) correlations among different traits. Character rG ± SE Age at first calving with Longevity Productive herd life Lifetime milk production Milk yield per day of longevity Milk yield per day of productive herd life Number of calf produced Longevity with Productive herd life Lifetime milk production Milk yield per day of longevity Milk yield per day of productive herd life Number of calf crop Productive herd life with Lifetime milk production Milk yield per day of longevity Milk yield per day of productive herd life Number of calf crop Lifetime milk production with Milk yield per day of longevity Milk yield per day of productive herd life Number of calf crop Milk yield per day of longevity with Milk yield per day of productive herd life Number of calf crop Milk yield per day of productive herd life with Number of calf crop 96 Correlation rP ± SE rE 0.253 ± 0.648 -0.503 ± 0.705 0.181 ± 0.937 -0.706 ± 0.766 -0.454 ± 0.363 -0.456 ± 0.286 0.099 ± 0.043 -0.119 ± 0.043 -0.070 ± 0.049 -0.215 ± 0.049 -0.087 ± 0.049 -0.164 ± 0.040 0.094 -0.069 -0.140 -0.138 0.074 -0.017 1.024 ± 0.225 0.675 ± 1.426 0.999 ± 0.002 0.930 ± 0.019 0.849 ± 0.027 0.434 ± 0.046 0.918 ± 0.017 0.998 0.922 0.692 ± 1.651 0.930 ± 0.019 0.851 ± 0.027 0.432 ± 0.046 0.920 ± 0.017 0.923 - 0.935 ± 0.018 0.630 ± 0.039 0.926 ± 0.019 - 1.439 ± 2.502 - 0.781 ± 0.031 0.881 ± 0.024 0.776 - - 0.539 ± 0.043 - Buffalo Bulletin (March 2015) Vol.34 No.1 prepubertal average daily weight gain. (Tomar and Ram, 1992; Gowane and Tomar, 2007). The age at first calving group had highly significant (P<0.01) effect on this trait. The Murrah buffaloes calving at younger ages produced more number of calves than those calved later. The highest and lowest lifetime calf crops were produced in ≤1250 days and >1850 days age at first calving groups and they differed significantly (P<0.05) with each other. Lifetime milk production The average lifetime milk production of the Murrah buffaloes estimated (5441.6 ± 206 kg) in the present herd was lower than the values reported by earlier researchers (Rao and Rao, 1996; Kuralkar and Raheja, 2000; Sasidhar et al., 2000). However, Kumar et al. (2006) reported comparable values of 5381.07 ± 66.63 kg for Murrah buffaloes maintained at different MDFs. The age at first calving had highly significant (P<0.01) effect on the trait, however, no conclusive pattern was observed between different ages at first calving groups. The lowest lifetime milk production was observed in heifers that calved after 1850 days of age and they differed significantly (P<0.05) with rest. Estimation of genetic parameters The heritability estimates for longevity, productive herd life, lifetime milk production and milk yield per day of longevity were either zero or nearly zero. Among the different lifetime production traits, milk yield per day of productive herd life had higher heritability value but with high standard error. The heritability estimates observed for the different traits were lower than the reports of Narula et al. (1994), Raheja (1998), Dutt and Taneja (2000) and Galeazzi et al., (2010). The lower estimates of heritability for different lifetime milk production traits in the present study suggested that direct selection for the traits would not bring much genetic improvement. Moreover selection on lifetime performance traits is not practical because of long generation interval and high cost of maintaining potential replacement stock. Age at first calving had a medium to high negative genetic correlation with lifetime production traits except with longevity and lifetime milk yield, where the associations were positive and low which is not desirable. However, the negative association with milk yield per day of longevity and productive herd life was in the expected and desired manner but with high standard error. This pointed out that by reducing age at first calving, the productive herd life of the herd would be improved and also improvement in milk yield per Milk yield per day of longevity and Milk yield per day of productive herd life The overall least-squares means for milk yield per day of longevity and milk yield per day of productive herd life in the present study in Murrah buffaloes at Central Cattle Breeding Farm, Alamadhi was found to be on the lower side of the range of values reported in most of the studies (Rao and Rao, 1996; Raheja, 1998; Kumar et al., 2006). The age at first calving had highly significant (P<0.01) effect on milk yield per day of longevity and gradual decline in yield was observed with the increase of age at first calving up to 1850 days. Whereas, it had no effect on milk yield per day of productive herd life and the values generally ranged between 2.69 ± 0.16 and 2.96 ± 0.09 kg. Lifetime calf crop The mean lifetime calf production (3.00 ± 0.08) of Murrah buffaloes in the herd studied was comparable to those reported by earlier workers 97 Buffalo Bulletin (March 2015) Vol.34 No.1 of lactation length as selection criteria for maximizing lifetime milk yield. Indian J. Anim. Sci., 70: 87-88. El-Arian, M.N. and V.N. Tripathi. 1988. Studies on the herd life and productive life of Murrah buffaloes. Buffalo J., 2: 225-229. Galeazzi, P.M., M.E.Z. Mercadante, J.A.I.I.V. Silva, R.R. Aspilcueta-Borquis, G.M.F. de Camargo and H. Tonhati. 2010. Genetic parameters for stayability in Murrah buffaloes. J. Dairy Res., 77: 252-256. Gowane, G.R. and S.S. Tomar. 2007. Genetic and non-genetic factors affecting selective value in a herd of Murrah Buffaloes. Indian J. Dairy Sci., 60: 25-29. Harvey, W.R. 1990. Least-Squares Analysis of Data with Unequal Subclass Numbers. USDA, Science and Education AdministrationAgricultural Research, Beltsville, USA. Kalsi, J.S. and J.S. Dhillon. 1982. Performance of buffaloes in first three lactations. Indian J. Dairy Sci., 35: 218-219. Kumar, S., M.C. Yadav, B.P. Singh and R.B. Prasad. 2006. Relative importance of reproductive traits on herd life milk production and profit in buffaloes. Buffalo Bull., 25: 90-94. Kuralkar, S.V. and K.L. Raheja. 2000. Factors affecting first lactation and lifetime traits in Murrah buffaloes. Indian J. Dairy Sci., 53: 273-277. Lin, C.Y., A.J. McAllister, T.R. Batra, A.J. Lee, G.L. Roy, J.A. Vesely, J.M. Wauthy and K.A. Winter. 1988. Effect of early and late breeding heifers on multiple lactation performance of dairy cows. J. Dairy Sci., 71: 2735-2743. Meyer, K. 1997. Derivative Free Restricted Maximum Likelihood Programme-Version 3.0 α. User Notes. University of New England, Armidale, Australia. day of longevity and milk yield per day productive herd life. The genetic and phenotypic correlation estimates between different lifetime production traits indicated that all the traits were controlled by similar sets of genes and an increase or decrease in any one of them will have similar effect on other traits because of positive association. Proper nutritional management, protection against inclement weather through provision of comfortable housing and special concentrate mixture supplements/balanced ration just before and at the time of milking and feeding roughage, especially straw, at night will certainly provide remedial measures and reduce age at first calving and increase lifetime milk production (Singh and Dangi, 2011). CONCLUSION The analysis of effect of age at first calving on different lifetime production traits revealed that the optimum age at first calving group in hot and humid climatic conditions of Tamil Nadu for higher longevity, productive herd life and lifetime milk production was >1550 days. On the basis of present finding it may be concluded that the age at first calving should be given due weightage for improving the lifetime production traits of Murrah buffaloes. Proper nutritional management and protection against inclement weather through provision of comfortable housing will reduce age at first calving to the desired level for better lifetime performance. REFERENCES Dutt, T. and V.K. Taneja. 2000. Milk yield per day 98 Buffalo Bulletin (March 2015) Vol.34 No.1 Narula, H.K., B.S. Chhikara, A.S. Kanaujia and A. Saini. 1994. Factors affecting some economic traits of production in Murrah buffaloes. Journal of Dairying, Foods and Home Sciences, 13: 98-102. Raheja, K.L. 1998. Multivariate restricted maximum likelihood estimates of genetic and phenotypic parameters of lifetime performance traits for Murrah buffalo. In Proceedings of the 6th World Congress on Genetics Applied to Livestock Production, Armidale, Australia, 24: 463-466. Rao, A.V.N. and H.R.M. Rao. 1996. Longevity, lactation efficiency and culling pattern of Murrah buffaloes in Andhra Pradesh. Indian Vet. J., 73: 1196-1197. Report. 2006. Basic Animal Husbandry Statistics. AHS Series-10. Government of India. Department of Animal Husbandry, Dairying and Fisheries, New Delhi. pp. ix+162+14. Sasidhar, P.V.K., B.S. Rao and R.V.S. Kumar. 2000. Calving pattern and some lifetime performance attributes of buffaloes. Indian J. Dairy Sci., 53: 239-241. Singh, R. and K.S. Dangi. 2011. Higher age at first calving and long calving interval: limitations and remedies. Indian Dairyman, 63: 44-48. Taneja, V.K. 1998. Buffalo breeding research in India. Indian J. Anim. Sci., 67: 713-719. Tomar, S.S. and R.C. Ram. 1992. Inheritance of lifetime calf crop in a herd of Murrah buffaloes. Indian Vet. J., 69: 233-235. e:919443565565. 99 Buffalo Bulletin (March 2015) Vol.34 No.1 Original Article EFFECT OF SEASON ON SEMEN QUALITY PARAMETERS IN MURRAH BUFFALO BULLS M. Bhakat, T.K. Mohanty1, A.K. Gupta1, S. Prasad2, A.K. Chakravarty1 and H.M. Khan3 volume (2.69, 2.71 and 2.56), mass activity (2.56, 2.40 and 2.67) and total sperm output (2510.08, 2812.44 and 2923.49) in Murrah buffalo bulls, but it had a significant (P<0.05) effect on pH (6.85, 6.77 and 6.71) of semen. The present data clearly indicated that there was highly significant (P<0.01) effect of season on seminal attributes such as initial motility (56.18, 59.64 and 65.95), sperm concentration (870.62, 1028.20 and 1151.20), non-eosinophilic count (61.91, 65.65 and 73.74), HOST reacted sperm percent (47.05, 48.32 and 62.67), acrosome integrity (65.04, 68.64 and 76.28), sperm abnormalities (HEAD: 2.79, ABSTRACT The present study was undertaken to know the seasonal influence on various seminal attributes in Murrah buffalo bulls. Data on 156 ejaculates of eight Murrah buffalo bulls (nearly 30 to 58 months) maintained under identical nutrition and management conditions were selected randomly from Artificial Breeding Complex, NDRI, Karnal, India, from May, 2006 to April, 2007. The information on 156 ejaculates was subjected to least square analysis to quantify the effect of non genetic factor (summer, rainy and winter) on various semen quality parameters. The overall least square mean values of the 8 Murrah buffalo bulls for ejaculate volume (ml), mass activity, Initial motility (%), Sperm concentration (106/ml), Total sperm output 2.68 and 1.53; MP: 2.15, 1.58 and 1.19; TAIL: 7.11, 5.61 and 4.01 and TOTAL: 12.11, 9.90 and 6.76) and osmolality (288.05, 279.81 and 265.48) of semen. During hot dry (summer) season, the highest values of VOL, sperm abnormalities, pH and OSMOL and lowest MA, IM, SPC, SPCE, LIVE, HOST and AI were observed. During hothumid (rainy) season, intermediate values of all the seminal attributes were observed. During cold (winter) season highest magnitude of MA, IM, SPC, SPCE, LIVE, HOST and AI and lowest value of VOL, sperm abnormalities, pH and OSMOL were observed. Thus, it may be concluded that the hot-dry season adversely affect the various bio- (106), Non-eosinophilic count (%), HOST (%), Acrosome integrity (%), Head abnormality (%), Mid-piece abnormality (%), Tail abnormality (%), Total abnormality (%), pH and Osmolality (mOsmol/Kg) were 2.66±0.10; 2.54±0.70; 60.64±0.02; 1016.68±21.25; 2748.67±122.86; 67.20±0.03; 40.88±0.03; 52.72±0.01; 70.10±0.02; 2.30±0.001; 1.62±0.01; 5.50±0.002; 9.47±0.002; 6.78±0.20 and 277.78±2.40, respectively. Seasonal variations had no significant effect on ejaculate Artificial Breeding Research Centre, National Dairy Research Institute, Karnal, Haryana, India 2 Livestock Research Centre, National Dairy Research Institute, Karnal, Haryana, India 3 Sheep Research Station, Faculty of Veterinary Science and Animal Husbandry, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir (SKUAST-K), Shuhama, Alusteng, Srinagar, Kashmir (J&K), India 1 100 Buffalo Bulletin (March 2015) Vol.34 No.1 animal productivity. Investigations carried out under carefully controlled conditions have shown that both the magnitude and duration of stress induced by the adverse environmental condition influences the animal’s physiological reactions and production, in the experimental location. The maximum and minimum temperature during the summer months varies from 30 to 46oC and the annual rainfall is about 760 to 960 mm which is mostly received during the month of July and August and the relative humidity ranges from 45 to 99 percent. The stressful effect of such a severity of weather condition was further aggravated by the stress imposed by direct and reflected solar radiations. Many places in northern India such an environment characteristics of the summer is encountered for a period of 50 to 100 days and animal in the field, during summer, is not only burdened with the above heat load but also the stress is further aggravated by exposure to the sun for over 12 h a day foraging in terrains which are sandy and devoid of sufficient vegetation cover. It is under such environment that the farm animal exists in the semi-arid zones of northern India (Sengupta et al., 1963). An extraordinary long calving interval in buffalo is a result of many factors of which the seasonality in the breeding of females and its effect on the libido and semen production of the bulls is the most distinct one (Zafar et al., 1988). In farm animals though the spermatogenesis activity is a continuous process with the attainment of puberty, many investigation have shown that the quality and quantity of semen may vary during different season of the year. In buffalo bulls it is not conclusive due to the lack of sufficient reports and the variable results may be particularly due to different agro climatic conditions under which the experiments were carried out (Gupta et al., 1978; Zafar et al., physical characteristics of semen in Murrah buffalo bulls. Winter was the most favourable season for good quality semen production and the rainy season might be considered as the intermediate between the two extremes. Keywords: season, semen quality parameters, Murrah buffalo bull INTRODUCTION In recent years animal climatology as a subject of systemic study has gained recognition and the results achieved so far emphasize the importance of further concerned and intensive study of the subject in relation to animal productivity. In addition to the fundamental aspect of temperature adaptation by farm animals the subject has been approached from its applied aspect as well namely the economy of production, e.g., milk production, rate of survival, growth and fertility. As an offshoot of these studies has grown newer concepts of management- feeding and handling of animals and designs for housing or shelter for the livestock as well as the lay-out of the immediate surrounding to the animal houses. In the tropical climate heatstress is largely responsible for the low animal productivity. Tropical countries like India where ambient temperature remains above the thermoneutral zone of the farm animals for a large part of the year. Nearly 90% of the rainfall takes place in northern regions during three successive months of the year. Since productivity is primarily determined by the extent of the utilization of the available natural resources as well as the direct effects of climatic components on the physiology of the animals, it is necessary to ascertain the detrimental influences of climatic condition on 101 Buffalo Bulletin (March 2015) Vol.34 No.1 8 Murrah bulls (30 to 58 months of age and 518.58 to 782.50 kg body weight) maintained at Artificial Breeding Complex, NDRI, Karnal, India. Data were collected from 156 ejaculates over a period of one year (May, 2006 to April, 2007). The farm is situated at an altitude of 250 meters above the mean sea level on 29.43°N latitude and 72.2°E longitude. The bulls were maintained identical and optimal conditions of feeding and management during the entire course of the experiment. The bulls were healthy, free from diseases, sexually mature, good libido and clinically normal, randomly selected from the herd. The year was subdivided into three seasons: Hot Dry or summer (April to June); Hot Humid or Rainy (July to October) and Cold or winter (November to March). Semen was collected in the morning once a week from the bulls using sterilized bovine artificial vagina (IMV model005417) (temp 42-45°C), using dummy bull. Soon after collection volume was measured and each ejaculate was placed in a water bath at 30°C and various standard laboratory tests for semen were recorded. Semen was assessed for mass activity and individual motility using DIC phase contrast microscope (Nikon Eclipse E600, Tokyo, Japan) with Tokoiheat thermal stage as per standard method. Mass motility was expressed qualitatively in (0-5) scale as per the description given by Tomar et al. (1966). Sperm concentration was estimated by Haemocytometer (Improved Neubauer’s chamber) method. pH of the fresh semen was determined within 15 minutes of collection with Cyberscan 510 pH meter (Eutech Instrument, Singapore) and osmolality by WESCOR vapour pressure Osmometer (WESCOR model 5500, INC, USA). The live and dead spermatozoa count was determined as per the method of Bloom (1950) and Hancock (1951) and the same slide was used to determine the sperm abnormalities. The hypo- 1988; Bhosrekar et al., 1992b; Prajapati, 1995; Bhat et al., 2004; Koonjaenak et al., 2007). Among different seasons hot-dry and hot-humid season reported to be unfavourable for production as well as reproduction. The effect of season is both direct and indirect. It affects the animal directly through macro and micro climatic factors, like temperature, humidity, rainfall and photoperiod. Indirectly it acts by affecting the vegetation, forage quality and soil-plant-animal interaction. The magnitude of variations differs from breeds, location, prevailing climatic conditions, feeding and general management (Mandal et al., 2000). Information regarding the effect of seasons on semen characteristics in Murrah buffalo bulls had been of conflicting nature. Some research workers had reported ill effects of heatstress (Gupta et al., 1978; Bhosrekar et al., 1992b; Prajapati, 1995), while others observed (Bhat et al., 2004) similar findings during the winter season; whereas such effects had been reported in the spring season by Sengupta et al. (1963). Ravimurugan et al. (2003) and Bhat et al. (2004) reported monsoon proved to be best season for production of quality semen in Murrah buffalo bulls. The knowledge of trend of seasonal influence on semen characteristics would help to know the requirement of bulls to meet the demand of frozen semen and to provide any suitable additional managerial requirements time to time. Hence, the present study was undertaken to investigate the effect of seasons on various characteristics of semen production in Murrah buffalo bulls keeping in view the specific consideration of climatic components. MATERIALS AND METHODS The present experiment was conducted on 102 Buffalo Bulletin (March 2015) Vol.34 No.1 various seminal attributes of Murrah buffalo bulls during different season are presented in Table 1. osmotic swelling test was performed according to the methods described by Correa and Zavos (1994). Staining was carried out as described by Hancock (1952) for acrosome integrity. To study the effect of season on the semen quality parameters (volume, mass activity, sperm concentration, total sperm production, motility, non-eosinophilic count, HOST reacted sperm count, intact acrosome, sperm abnormality studies) the following least square model has been used. Prior to the analysis proportionality data (motility, percent non-eosinophilic count, HOST, acrosome integrity and abnormality data) were transformed using the arcsine transformation [asin (sqrt (percent/100))] (Snedecor and Cochran, 1994) with adjustment to allow for zero values. Yik = μ + Si + eik Where, Yik = kth record of seminal parameter collected on a bull in ith season Si = Effect of ith season of collection [i=1 (Hot Dry (Summer): April to June), 2 (Hot Humid (Rainy): July to October) & 3 (Cold (Winter): November to March)] eik = Random error associated with Yik which is assumed to be normally and independently distributed with mean zero and constant variance. The recorded data were subjected to statistical analysis using LSML-91 software package, Walter Harvey. Seminal attributes Seasonal variations had no significant effect on ejaculate volume (VOL), mass activity (MA) and total sperm output (SPCE) in Murrah buffalo bulls, but it had a significant (P<0.05) effect on pH of semen. The present data clearly indicated that there was highly significant (P<0.01) effect of season on seminal attributes such as initial motility (IM), sperm concentration (SPC), noneosinophilic count (LIVE), HOST reacted sperm percent (HOST), acrosome integrity (AI), sperm abnormalities (head, mid-piece, tail and total) and osmolality (OSMOL) of semen. In the present study the overall least squares mean of ejaculate volume of Murrah buffalo bulls was found to be 2.66 ± 0.10. The ejaculate volume was highest during rainy and lowest during winter season (2.71 vs. 2.56). Bhattacharya et al. (1978) and Mandal et al. (2000) reported highest semen volume in Murrah bulls during summer season and lowest during winter season. However, Rao et al. (1991) and Ravimurugan et al. (2003) obtained highest ejaculate volume during rainy season; Sengupta et al. (1963) and Singh and Singh (1993) reported highest semen volume during spring season. No significant seasonal difference was observed in ejaculate volume which is in agreement with the findings of Oloufa et al. (1959) in Egyptian buffalo bulls; Tomar et al. (1966) in Murrah bulls; Manik and Mudgal (1984) in Murrah buffalo bulls and Koonjaenak et al. (2007) in Swamp buffalo. Several factors such as, age of the animal, differences between species, number of specimens, level of nutrition, management practice and environment conditions etc. may be responsible for the differences in results. RESULTS AND DISCUSSIONS Although spermatogenesis is a continuous process in male once it has reached reproductive maturity, the semen of farm animals exhibits a distinct climatic pattern with respect to its quality and fertilizing efficiency. Least squares means of 103 104 Hot Humid (Rainy) (N=53) Mean S.E. 2.71 0.17 2.40 0.11 a 59.64 0.05 B 1028.20 34.08 2812.44 197.03 a 65.65 0.07 A 48.32 0.04 a 68.64 0.06 B 2.68 0.001 B 1.58 0.001 B 5.61 0.004 B 9.90 0.005 AC 6.77 0.03 A 279.81 3.84 Cold Humid (Winter) (N=69) Mean S.E. 2.56 0.15 2.67 0.10 b 65.95 0.04 C 1151.20 31.34 2923.49 181.20 b 73.74 0.06 B 62.67 0.03 b 76.28 0.05 C 1.53 0.001 C 1.19 0.001 C 4.01 0.004 C 6.76 0.004 BC 6.71 0.03 B 265.48 3.53 Least squares means bearing different alphabets as superscripts differ significantly row-wise (abP<0.05, ABP<0.01). Ejaculate volume (ml) Mass activity (0-5 Scale) Initial motility (%) Sperm concentration (106/ml) Total sperm output (106) Non-eosinophilic count (%) HOST (%) Acrosome integrity (%) Head abnormality (%) Mid-piece abnormality (%) Tail abnormality (%) Total abnormality (%) pH Osmolality (mOsmol/Kg) Parameters Hot Dry (Summer) (N=34) Mean S.E. 2.69 0.21 2.56 0.14 a 56.18 0.08 A 870.62 42.23 2510.08 244.19 a 61.91 0.11 A 47.05 0.06 a 65.04 0.10 A 2.79 0.001 A 2.15 0.001 A 7.11 0.006 A 12.11 0.008 A 6.85 0.41 A 288.05 4.76 Table 1. Least squares means ± S.E. for effect of season on semen quality parameters of Murrah buffalo bulls. Mean 2.66 2.54 60.64 1016.68 2748.67 67.20 52.72 70.10 2.30 1.62 5.50 9.47 6.78 277.78 S.E. 0.10 0.70 0.02 21.25 122.86 0.03 0.01 0.02 0.001 0.01 0.002 0.002 0.20 2.40 Overall (N=156) Buffalo Bulletin (March 2015) Vol.34 No.1 Buffalo Bulletin (March 2015) Vol.34 No.1 The overall least squares mean of mass activity (MA) was found to be 2.54 ± 0.70. Mass activity was the maximum during winter, followed by summer and rainy season (2.67, 2.56 and 2.40). The highest mass activity during winter season had been reported in Murrah buffalo bulls (Manik and Mudgal, 1984; Mandal et al., 2000); Mehsana (Prajapati, 1995) and Surti buffalo bulls (Bhosrekar et al.,1992b), however, in Murrah bulls Bhosrekar (1980) and Dhami et al. (1998) observed its highest value during rainy season, whereas Zafar et al.(1988) obtained no significant seasonal variation in mass activity in Nili-ravi bulls as it was found in the present study. Results are conflicting because mass motility was subjectively determined by microscopic examination of a drop of fresh semen; these data should be considered with caution. Significant (P<0.01) seasonal difference was observed in percent initial motility (IM) which is in agreement with the findings of Tuli and Singh (1983) in Murrah buffalo bulls and Bhosrekar et al. (1992b) in Surti buffalo bulls and Ravimurugan et al. (2003) in Murrah buffalo bulls. On the contrary, Oloufa et al. (1959) in Egyptian buffalo bulls; Gupta et al. (1978) in Surti buffalo; Zafar et al. (1988) in Nili- ravi buffalo bulls; Bhosrekar et al. (1991) in Murrah buffalo bulls; Prajapati (1995) in Mehsana; Mandal et al. (2000) in Murrah buffalo bulls and Koonjaenak et al. (2007) in Swamp buffalo did not obtain any significant seasonal variation in IM. The initial motility was found to be maximum during winter (65.95 vs. 56.18 and 59.64 %) which varied significantly (P<0.05) in summer and rainy season. Sperm concentration per unit volume of the semen is perhaps one of the most studied seminal attributes in relation to seasonal variation of semen quality. The results revealed that the sperm concentration per ml (SPC) varied significantly (P<0.01) among seasons being maximum during winter followed by rainy and summer season (1151.20, 1028.20 and 870.62 × 106/ml) which is corroborate with the report of Mandal et al. (2000) and Ravimurugan et al. (2003) in Murrah bulls. The difference in SPC between seasons was significant (P<0.01). Bhosrekar (1980) and Manik & Mudgal (1984) reported highest SPC during summer season in Murrah, where as Prajapati (1995) and Dhami et al. (1998) obtained highest value during rainy season; however, in Egyptian buffalo bulls Oloufa et al. (1959) observed its highest value during spring. On the contrary, Zafar et al. (1988) in Nili- Ravi buffalo bulls; Bhosrekar et al. (1992a) in Murrah; Bhosrekar et al. (1992b) in Surti and Koonjaenak et al. (2007) in Swamp buffalo obtained no significant seasonal variation in sperm concentration. The differences between this and other studies might be the result of length of the study period, as well as differences in the age and breed of the bulls. In the present finding lower concentration of spermatozoa during the summer may be due to significant reduction in the feed intake and increase in dead and abnormal spermatozoa. Dead and abnormal spermatozoa, which are absorbed by leucocytes through phagocytosis (Mann and Mann, 1981). The increased resorption of abnormal spermatozoa leads to reduction in epididymal sperm reserves (Rao et al., 1980), thus decreasing concentration. This finding support to the conclusion that the spermatozoa produced during summer were either intrinsically less active and vigorous at the time of production or that they, though normal at the time of genesis, suffered deterioration at some stage of their passage down the male reproductive tract prior to their release in the ejaculate under sustained impact of a climatically stressful summer environment. Total sperm output (SPCE) was maximum 105 Buffalo Bulletin (March 2015) Vol.34 No.1 have an opportunity to come out in the ejaculate. Significant (P<0.01) seasonal variation in hypo-osmotic swelling test (HOST) reacted spermatozoa was observed in the present investigation being maximum during winter season followed by rainy and summer season (62.67, 48.32 and 47.05%). However the variation between summer and rainy season was non-significant. The results obtained here are quite similar to those reported by Mandal et al. (2000) in Murrah buffalo bulls. Whereas, Koonjaenak et al. (2007) reported PMI was highest in summer and lowest in winter (P< 0.05). Percentage of spermatozoa with intact acrosome were found to be significantly (P<0.01) affected by seasons. The lowest acrosome integrity percent was observed during summer and highest during winter season (65.04 vs. 76.28%). However the variation between summer and rainy season was non-significant (65.04 and 68.64 %). However, Manik and Mudgal (1984) and Mandal et al. (2000) reported lowest value during summer, whereas, Singh and Singh (1993) reported lowest value during winter season. The variation in head, mid-piece, tail and total abnormality percent were highly significant (P<0.01) among the seasons. All the abnormalities were found to be higher during summer followed by rainy and winter seasons (HEAD- 2.79, 2.68 and 1.53; Mid-piece- 2.15, 1.58 and 1.19; TAIL7.11, 5.61 and 4.01; TOTAL- 12.11, 9.90 and 6.76 %). Significant (P<0.01) variation between season were also observed in case of all the abnormalities. Bhavsar et al. (1990) in Mehsana buffalo bulls and Mandal et al. (2000) in Murrah buffalo obtained almost similar types of results, but Manik and Mudgal (1984) and Bhosrekar et al. (1991) reported higher abnormality during winter season. Whereas, Koonjaenak et al. (2007) reported significant during winter followed by rainy and summer season (2923.49, 2812.44 and 2510.08×106). As the sperm concentration per ml was highest during winter season resulted in maximum sperm output per ejaculate. However, Prajapati (1995) in Mehsana; Singh et al. (1992) in Mehsana; Gupta et al. (1978) in Surti; Rao et al. (1991) in Murrah and Mandal et al. (2000) in Murrah buffalo bulls obtained maximum output during rainy season, whereas Bhavsar et al. (1986) obtained highest sperm per ejaculate in autumn season in Mehsana bulls. However, Koonjaenak et al. (2007) in Swamp buffalo observed no significant seasonal variation in total sperm output. These variations may be due to managemental conditions, laboratory method of estimating sperm concentration. Significant (P<0.01) seasonal variation in non-eosinophilic sperm percent was observed. Highest live sperm percent was observed during winter, followed by rainy and summer season (73.74, 65.65 and 61.91%). The live sperm percent was found to be maximum during winter which varied significantly (P<0.05) with summer and rainy season. Our results are in agreement with the findings of Gupta et al. (1978) in Surti and Mandal et al. (2000) in Murrah buffalo bulls. Sengupta et al. (1963); Manik and Mudgal (1984) and Dixit et al. (1984) also reported lowest live sperm count during summer season. However Bhosrekar (1981) and Singh and Singh (1993) observed lowest value of live sperm percent in Murrah bulls during winter season and Prajapati (1995) reported lowest value during rainy season in Mehsana bulls. The occurrence of lowest percentage of live spermatozoa synchronizing with the part of year characterized by the highest mean ambient temperature suggests that the summer environment becomes instrumental in causing death and abnormality to a high percentage of spermatozoa even before they 106 Buffalo Bulletin (March 2015) Vol.34 No.1 seasonal influence on sperm morphology. He also found that among morphological abnormalities, only proportions of tail defects were affected by season, being highest in the rainy season and lowest in summer (P < 0.001). Significant (P<0.05) seasonal difference in pH was observed in the present study. This may be due to seasonal fodder changes. During summer pH was high may be due to silage feeding. On the contrary, Koonjaenak et al. (2007) in swamp buffalo reported no significant seasonal variation in pH. Mandal et al. (2000) also observed similar results in Murrah buffalo bulls. Highly significant (P<0.01) variations due to season were observed in case of osmolality, being maximum during summer, followed by rainy and winter seasons (288.05, 279.81 and 265.48 %). Heat stress increases loss of body fluid due to sweating and panting, if the stress continues for a longer period the fluid loss can reach critical level (Kadzere et al., 2002) and may be reflected in the seminal plasma which is evident from the above finding that osmolality was highest during the hot dry season. The reason for variation in osmolality of seminal plasma is not clearly known, however, it may be due to fluctuation in core body temperature, seasonal fodder changes and changes in thermodynamics of body. On the other side may be variation of environmental temperature has effect on the osmolality reading by the vapor pressure machine to the extent of 5 to 7%. Individual variation might be attributed to the genetic makeup, age, nutrition and the influence of the climatic components, which might have transduced variably into endocrine messages controlling hypophyseal-hypothalamo-gonadal axis. Haryana is the home track of the Murrah buffalo and they are very much adaptable to the environment. Normal management practices in the field condition to ameliorate heat stress is by wallowing in the village pond or in irrigation canal for longer part of the day, when the solar radiation and heat is maximum, but in case of our farm condition we are not able to provide such type of facilities for breeding bulls. Sprinkling facility is available during this period. In case of female buffaloes, providing mist, forced cooling and wallowing improves productivity. In general summer may be regarded as the season exerting relatively more adverse effect on the overall semen quality than the other seasons. This appears quite likely in view of the high ambient temperature, a relatively long spell of that high temperature, hot blast of wind (Loo) and a continuous stream of radiation impinging directly and indirectly through reflection from terrains or shed on the animal’s body and thereby precipitating a really distressing challenge to the animal’s thermoregulatory mechanism. The buffalo bulls seem to be susceptible to either extremes of heat and cold. But under the experimental conditions it appeared that they were more tolerant towards the colder months as compared to the hotter months. It will be apparent from the climatic table that winter in this part can be considered neither extreme nor severe to the extent to being definitely detrimental. The semen picture during winter was better to that of rainy and summer season. Semen quality in bull reflects the degree of normality of the function of their testes, ducti epididymides and genital tract (including the accessory sex glands). The normality of the genital system also depends on the hormonal balance of the bull, which is sensitive to changes in health status, nutrition and management. Changes in these conditions influence sperm output, accessory sex gland secretion and epididymal function, all of which are reflected in the in the semen quantitative 107 Buffalo Bulletin (March 2015) Vol.34 No.1 (ejaculate volume, sperm concentration and total sperm output per ejaculate) and qualitative characteristics (mass motility, individual motility, non-eosinophilic, abnormal sperm percent, intact acrosome and spermatozoa with intact plasma membrane percent). The sperm quality in the ejaculate, regarded as the sum of these variables. Furthermore, external cues such as seasonality also appear to influence sexual function, either through photoperiod (Barth and Waldner, 2002) or through changes in ambient temperature (Fayemi and Adegbite, 1982; Sekoni and Gustafsson, 1987). The time course of spermatogenesis in the bull is as follows: the transformation of committed A spermatogonia to B2 spermatogonia takes 20 days, of B2 spermatogonia to panchytene spermatocyte takes 10 days, of panchytene spermatocyte to early round spermatid takes 13.5 days, of early round spermatid until release into the lumen takes 17.5 days, epididymal transit time is six to eight days (Amann and Schanbacher, 1983). The numbers of sperm and morphology of the semen finally ejaculated are determined by the numbers of stem cells recruited to undergo spermatogenesis and by the mortality throughout spermatogenesis, particularly at the pachchytene spermatocyte and early round spermatid stage. Hence semen quality at any time is likely to reflect the environmental influences upon the sensitive stages of spermatogenesis, which is highly sensitive to even short increases in scrotal temperature, as has been recorded in Bos taurus AI sires kept in temperate regions (Januskauskas et al., 1995). From the findings of the present investigation, it could be inferred that the hot seasons was the worst for semen production in Murrah buffalo bulls. It might be attributed to the fact that heat stress reduces the release of GnRH, which in turn affected the release of hormones responsible for spermatogenesis. Heat stress might have also increased the release of ACTH, which inhibits the effect of LH, an important hormone responsible for spermatogenesis. Clarke and Tilbrooke (1992) reviewed the effects of heat and various other environmental stresses in different species of livestock. It indicated that the stressors in general affect the normal process of reproduction in a multi-dimensional way by reducing feed intake, impairing either the release or response to the important hormones of reproduction, like GnRH, LH and increased levels of plasma corticosteroids, have inhibitory effect on LH. However, the exact effects on gonadal functions on dairy bulls need to be investigated. Besides, decline in thyroxin level during hot-dry and hot-humid seasons as compared to winter (Madan, 1985) impaired the general metabolism and feed intake and could be instrumental in causing reproductive dysfunctions (Zafar et al., 1988). The temperature sensitive muscles of the testis- tunica dartos and external cremester muscles get relaxed to its maximum limit to keep testicles cool, after that core temperature goes on increasing. Nonetheless, increased core temperature of testes might have reduced the activity of enzymes responsible for spermatogenesis and impaired the normal process of reproduction. A few investigators (Kushwaha et al., 1955; Gopalakrishna and Rao, 1978) have attributed the low breeding efficiency of buffaloes during summer due to deterioration of semen quality, but this has been disputed by others (Tomar et al., 1964; Chaudhary and Gangwar, 1977). As the sexual activity of each species including human beings, is highly influenced by the environment of the surroundings, the variation in these parameters are quite obvious with reference to time, place and subject concerned. In summer, extreme heat stress causes physical exhaustion, which might reduce the eagerness of the bulls and 108 Buffalo Bulletin (March 2015) Vol.34 No.1 functions of the breeding bulls. In general it is suggested that during summer, breeding bulls should be kept cool and comfortable by splashing water at least 3-4 times a day, protected from direct wind blasts, housed in a place with comfortable micro-environment with least humidity, fed during cool hours and have a free access to cool drinking water. thus, result in higher reaction time and total time for successful ejaculation, thus having an ultimate effect on production of sperms Mandal et al. (2000). Reasons for good quality seminal ejaculates during winter might be attributed to the congenial weather condition which affects the activity and secretions of accessory reproductive glands, since the secretions are dependent on testosterone liberated by interstitial cells during this season which might have favoured the process of spermatogenesis Mandal et al. (2005). Madan (1985) found that thyroxin was higher during cold as compared to hot-dry and hot-humid seasons. Thyroxin is one of the primary metabolic hormones which bear the significance in this regard. Application of Vaseline during winter season prevented the cracking of the skin as result damage to testicular tissue may be very minute. ACKNOWLEDGEMENT We are thankful to Director, NDRI for providing the necessary funding to carry out the research work. REFERENCES Amann, R.P. and B.D. Schanbacher. 1983. Physiology of male reproduction. J. Anim. Sci., 57(Suppl. 2): 380-397. Barth, A.D. and C.L. Waldner. 2002. Factors affecting breeding soundness classification of beef bulls examined at the Western College of Veterinary Medicine. Canadian Vet. J., 43: 274-284. Bhat, V., T.G. Honnappa and B.M. Dubey. 2004. Seasonal effects on seminal attributes in Murrah bulls under Bangalore agroclimatic conditions. Indian J. Anim. Reprod., 25(1): 23-24. Bhattacharya, M.K., G.J. King and J.R. Behra. 1978. Buffalo semen quality in various seasons. Indian Vet. J., 55: 591-594. Bhavsar, B.K., A.J. Dhami and S.B. Kodagali. 1990. Abnormal sperm count in Mehsana buffalo semen with regard to freezability and fertility. Indian Vet. J., 67(3): 233-237. CONCLUSION Thus, it may be concluded that the hot-dry or summer season adversely affect the various biophysical characteristics of semen in Murrah buffalo bulls. Winter was the most favourable season for good quality semen production and the rainy season might be considered as the intermediate between the two extremes. The procedure of semen quality assessment, instruments used, expertise of different evaluator, replications of the experiment and seasonal classification might have resulted in little consistency in results. Most of the workers while describing the seasons attributed the given months to constitute them in quarters without giving specific consideration to the duration of prevalence of dry heat, moist heat, cold conditions, etc., which exert their influence directly or indirectly on semen production and other related physiological 109 Buffalo Bulletin (March 2015) Vol.34 No.1 Bhavsar, B.K., K.S. Patel, V.K. Kerur and S.B. Kodagali. 1986. Seminal characters, freezability and fertility in Mehsana and Murrah buffaloes. Indian J. Anim. Reprod., 7: 7-14. Bhosrekar, M.R. 1980. Studies on buffalo semen. Seasonal variation in seminal characteristics. Indian Vet. J., 57: 806-810. Bhosrekar, M.R. 1981. Studies on buffalo semen (seasonal variation and effect on different diluents and freezing on live count and sperm abnormality. Indian Vet. J., 58: 784789. Bhosrekar, M.R., S. Mokashi, J.R. Purohit, S.B. Gokhale and B.R. Mangurkar. 1991. Studies on the effect of deep freezing and seasons on the leakage of aspertate amino transferase into extracellular medium and sperm morphology of Murrah buffalo bulls. Anim. Reprod. Sci., 26: 219-226. Bhosrekar, M.R., J.R. Purohit, S.B. Gokhale and B.R. Mangurkar. 1992a. Semen characteristics and behavioural pattern of buffalo bulls in relation to age and season. Indian J. Anim. Sci., 62(3): 251-255. Bhosrekar, M.R., J.R. Purohit, S.B. Gokhale and B.R. Mangurkar. 1992b. Effect of seasons on production performanceof surti buffalo bulls. Indian J. Anim. Sci., 62(5): 443-447. Bloom, E. 1950. A rapid staining method using Eosine Nigrosin to distinguish between live and dead spermatozoa. Anim. Breed. Abstr., 18: 1390. Chaudhary, K.C. and P.C. Gangwar. 1977. Seasonal variations in physico biochemical determinants of buffalo (Bos bubalis) semen and their relation to fertility. J. Agric. Sci. Camb., 89: 273-277. Clarke, I.J. and A.J. Tilbrook. 1992. Influence of non-photoperiodic environmental factors on reproduction in domestic animals. Anim. Reprod. Sci., 28: 219-228. Correa, J.R. and P.M. Zavos. 1994. The hypoosmotic swelling test; its employment as an assay to evaluate the functional integrity of the frozen-thawed bovine sperm membrane. Theriogenology, 42: 351-360. Dhami, A.J., M. Greesh and K.L. Sahni. 1998. Seasonal influences on the quality and freezability of semen of Friesian and Murrah buffalo bulls. Indian J. Anim. Reprod., 19(1): 55-58. Dixit, N.K., S.P. Agarwal, V.K. Agarwal and P.K. Dwarkanath. 1984. Seasonal variation in serum levels of steroid hormones and their relationship with seminal quality and libido in buffalo bulls. Theriogenology, 24: 293303. Fayemi, O. and O. Adegbite. 1982. Seasonal variations in sperm abnormalities in bulls in a tropical climate. Rev. Elev. Med. Vet. Pay., 35: 69-72. Gopalakrishna, T. and A.R. Rao. 1978. Semen characteristics in Murrah buffalo bulls as affected by different seasons. Indian Vet. J., 55: 216-221. Gupta, H.C., M.C.S. Naik and R.K. Srivastava. 1978. Effect of age and season on certain characteristics of Surti buffalo bulls. Indian J. Dairy Sci., 31(3): 245-252. Hancock, J.L. 1951. A staining technique for the study of temperature shock in semen. Nature, 167: 323. Hancock, J.L. 1952. The morphology of bull spermatozoa. J. Exp. Biol., 29: 445-453. Januskauskas, A., J. Gil, H. Rodriguez-Martinez, L. Söderquist and N. Lundeheim. 1995. Effects of a brief elevation of scrotal temperature 110 Buffalo Bulletin (March 2015) Vol.34 No.1 on the post-thaw viability of bull semen. Reprod. Domest. Anim., 30: 271-277. Kadzere, C.T., M.R. Murphy, N. Silanikove and I. Maltz. 2002. Heat stress in lactating dairy cows: a review. Lives. Prod. Sci., 77: 5991. Koonjaenak, S., V. Chanatinart, S. Aiumlamai, T. Pinyopumimintr and H. Rodriguez-Martinez. 2007a. Seasonal variation in semen quality of swamp buffalo bulls (Bubalus bubalis) in Thailand. Asian J. Androl., 9(1): 92-101. Kushwaha, N.S., D.P. Mukherjee and P. Bhattacharya. 1955. Seasonal variations in reaction time and semen qualities of buffalo bulls. Indian J. Vet. Sci., 25: 317-328. Madan, M.L. 1985. Endocrine control of reproduction in buffaloes, p. 524. In Proceedings of the First World Buffalo Congress, Cairo, Egypt. Mandal, D.K., S.K. Tyagi and A.K. Mathur. 2005. Semen production performance of Sahiwal bulls. Indian J. Anim. Sci., 75(1): 17-19. Mandal, D.K., P.K. Nagpaul and A.K. Gupta. 2000. Seasonal variation in seminal attributes and sexual behaviour of Murrah buffalo bulls. Indian J. Dairy Sci., 53: 278-283. Manik, R.S. and V.D. Mudgal. 1984. Monthly and seasonal variation in physico-chemical and biochemical attributes of buffalo semen. World Rev. Anim. Prod., 4: 45-50. Mann, T. and C.L. Mann. 1981. Male Reproductive Funtion and Semen. Springer- Verlag Berlin. Heidelberg, New York, USA. Oloufa, M.M., A.A. Sayed and A.L. Bareldin. 1959. Seasonal variation in reaction time of Egyptian buffalo- bulls and physiochemical characteristics of their semen. Indian J. Dairy Sci., 12: 10-17. Prajapati, K.B. 1995. The effect of exercise and feeding bypass protein on sexual behaviour and seminal attribute in Mehsana buffalo. Ph.D. Thesis, NDRI Deemed University, Karnal, India. Rao, A.R., A. Bane and B.K. Gustafasson. 1980. Changes in the morphology of spermatozoa during their passage through the genital tract in dairy bulls with normal and impaired spermatogenesis. Theriogenology, 14(1): 10-12. Rao, A.V.N., C.V. Rao and G.B. Haranath. 1991. Effect of collection frequency, age and season on quantitative seminal characteristics in Murrah bulls. Indian Vet. J., 68: 1084-1085. Ravimurgan, T., K.S. Raman and P. Thangaraju. 2003. Seasonal influences on the semen production traits of Murrah buffalo bulls. Indian Buffalo J., 1(2): 85-87. Sekoni, V.O. and B.K. Gustafsson. 1987. Seasonal variations in the incidence of sperm morphological abnormalities in dairy bulls regularly used for artificial insemination. Brit. Vet. J., 143: 312-317. Sengupta, B.P., M.S. Mishra and A. Roy. 1963. Climatic environment and reproductive behaviours of buffaloes. 1. Effect of different seasons on various seminal attributes. Indian J. Dairy Sci., 16: 150-165. Singh, B. and D.S. Singh. 1993. Effect of season and quantity of semen in Jersey and Murrah buffalo. Indian J. Anim. Res., 27(2): 81-87. Singh, M., G.D. Singh and H.C. Pant. 1992. A study on semen quality of Murrah buffalo bulls under temperate climate. Indian Vet. Med. J., 16: 194-97. Snedecor, G.W. and W.G. Cochran. 1994. Statistical Methods, 6th ed. Oxford and IBH Publ. Co., New Delhi, India. 111 Buffalo Bulletin (March 2015) Vol.34 No.1 Tomar, N.S., S.C. Sharma, R. Pandey and R.N. Desai. 1964. Sexual behaviour of bulls to estrous distribution in females. Indian Vet. J., 34: 108-115. Tomar, N.S., B.S. Mishra and C.B. Johari. 1966. Seasonal variations in reaction time and semen production, and prediction of some semen attributes on initial motility of spermatozoa in Hariana and Murrah bulls. Indian J. Dairy Sci., 19: 87-93. Tuli, R.K. and M. Singh. 1983. Seasonal variation in freezability of buffalo semen. Theriogenology, 20: 321-324. Zafar, A.H., N. Ahmed and S.K. Shah. 1988. Effect of seasonal variation on semen production of Nili-Ravi buffalo bulls. Buffalo J., 4(1): 61-68. 112 Buffalo Bulletin (March 2015) Vol.34 No.1 Original Article MILK YIELD AND COMPOSITION AND EFFICIENCY OF NUTRIENTS FOR MILK PRODUCTION IN JAFFRABADI BUFFALOES ON RATIONS SUPPLEMENTED WITH VARYING LEVELS OF BYPASS FAT H.H. Savsani1,*, K.S. Murthy2, P.U. Gajbhiye2, P.H. Vataliya1, A.R. Bhadaniya1, V.A. Kalaria1, S.N. Ghodasara2 and S.S. Patil1 10 g/kg milk supplemented group of buffaloes exhibited positive effect in influencing lower DMI, CPI, DCPI and TDNI per kg milk production. Overall results indicated higher level of bypass supplementation has no beneficial effect and prepartum supplementation of bypass fat tends to counter balance negative energy in early lactation. ABSTRACT Negative energy balance in early lactation can be counterbalanced by supplementing bypass fat in lactating animals. An experiment was conducted to evaluate the effects of supplementing daily rations with 0, 10, 20 and 30 g bypass fat/ kg milk production in 24 lactating Jaffrabadi (1-4 lactations 425-727 kg B.Wt.) buffaloes in four groups of six each in CRD. All the experimental buffaloes were offered bypass fat 150 g/day/animal 15 days prior to prepartum to nullify negative energy problem in early lactation. Milk and FCM production was not affected significantly(p>0.05) due to bypass fat supplementation, though 10 g/ kg milk supplementation resulted in 22.70% and 18.93% more milk and 28.21% and 20.51% more FCM, respectively, than control group. There was significant (p<0.05) and linear increase in milk fat percent and total solids percent in bypass supplemented group of buffaloes. Milk SNF, Protein and Ash percent were not influenced by the level of supplementation significantly. Total solids percent increased by 2.26, 5.73 and 4.93%, respectively in supplemented groups compared to control. This assumes significance due to the fact that buffalo milk is used for Khoa making. Though the nutrients efficiency for milk production was non significant among experimental groups, Keywords: bypass fat, Jaffrabadi buffaloes, nutrients efficiency, milk composition, milk yield INTRODUCTION Increasing energy density of the ration in early lactation to counterbalance negative energy is critical in high yielding buffaloes to optimize milk production. Unprotected fat in the total diet should not exceed 4% (Palmquist, 1988) as its affects Cellulose digestibility. Bypass fat availability in the lower gut not only enhances energy density of the ration but also supplies additional source of calcium (Anonymous, 2002). Different technologies like prilled fats, calcium salts of fatty acids, Formaldehyde treated fats to circumvent rumen degradation to enhance availability in the lower gut are available. Beneficial effects of bypass feeding as a supplement in early lactation are also established.. However, practical feeding of bypass College of Veterinary Science and Animal husbandry, Junagadh Agricultural University (JAU), Junagadh, Gujarat, India, *E-mail: hhsavsani@jau.in 2 Cattle Breeding Farm, Junagadh Agricultural University (JAU), Junagadh, Gujarat, India 1 113 Buffalo Bulletin (March 2015) Vol.34 No.1 of negative energy balance in early lactation. In the second week after calving, rations of buffaloes according to the treatment were enriched with bypass fat for twenty six weeks of lactation. Ration schedules were adjusted every fort night according to changes in milk yield and fat percent and body weight. Standard managerial conditions were provided during the experimental study . Animals were hand milked twice daily (5:00 h and 17:00 h) and the yields were recorded. Milk samples were drawn at fortnight intervals from individual animals during both the times of milking. Milk fat (Gerber’s method (ISI 1961)), Total solids (gravimetric or evaporation method), SNF (difference method) and Milk protein (AOAC,1995) were estimated. For FCM conversion formula of Rice et al., (1970) was adopted (0.4x Milk yield in kg + 15 x weight of fat content/1.3). Data were analyzed according to Snedecor and Cochran, (1994). fat to ruminants by dairy farmers in India is not common. Jaffrabadi buffaloes are heavy (600-800 kg body weight ) animals producing 2500 litres of milk per lactation with high far content (8.0%) . Fat globules are larger in size and the milk is highly preferred for ghee and khoa making. Feeding requirements of these buffaloes seem to be on higher side considering their body size. Present experiment was undertaken to compensate the negative energy balance of early lactation by 15 day pre-partum feeding of bypass fat and to evaluate the effect of varying levels of bypass fat supplementation postpartum on milk yield, fat content and composition of milk in Jaffrabadi buffaloes. MATERIALS AND METHODS An experiment was conducted in Completely Randomized Design for twenty six weeks on twenty four lactating Jaffrabadi buffaloes (1-4 lactation, 6 to 8 kg average milk production of previous lactation, BW 451-727 kg) in four groups of six each to evaluate the effect of feeding varying levels of bypass fat supplementation to the ration (T1) 0, (T2) 10 g, (T3) 20 g and (T4) 30 g/kg of milk) following ICAR(1998) feeding standards. All the experimental buffaloes were individually offered a basal diet of 10 Kg. seasonal green and mature pasture grass hay ad lib. DCP requirement was met 50% from concentrate mixture and 50% from cotton seed cake. Commercially available bypass preparation containing calcium soap of Palm fatty acids (Myristic acid -1.5%, Palmitidc acid -44%, Stearic acid-5%, Oleic acid-40%, Lineoleic acid-9.5%, with NEl 5.75 Mcal/kg and ED 7.95 Mcal/kg) was offered fifteen days prepartum daily 150 g/buffalo, to nullify the effect RESULT AND DISCUSSION Milk and FCM production Milk and FCM production during different phases of the experiment did not differ significantly except for periodic differences during P11 and P12 (Table 1 and 2 and Figure 1) Overall milk and FCM (6% corrected) production (kg/ day) was 6.43±0.44, 7.96±0.67, 6.15±0.56, and 7.05±0.36 and 6.63±0.49, 8.50±0.72, 6.86±0.64 and 7.99±0.48, respectively for T1, T2, T3 and T4. Whole milk and FCM production during the period of 182 days was 1170.10±80.6, 1448.80±122.7, 1118.77±102.5 and 1282.79±66.4 kg and 1238.40±89.3, 1519±132, 1217.53±114.7 and 1472.77±87.2 kg respectively under T1, T2, T3 and T4. Milk and FCM production increased from 114 Buffalo Bulletin (March 2015) Vol.34 No.1 P1 to P7 and more or less maintained throughout the experimental period. The differences in daily and overall milk and FCM production were nonsignificant. However, bypass fat offered buffaloes under T2 and T4 produced 22.70 % and 18.93 % more daily milk and 23.79 and 9.64% more total than control group. There was an increase of 28.21% and 20.51% in daily FCM production in T2 and T4 over control group of animals. Grummer (1988), Kent and Arambel (1988) , Schneider et al. (1988) , Jenkins and Jenny (1989), Schauff and Clark (1989) , Klusmeyer et al. (1991), Kim et al. (1993), reported no beneficial effect of feeding of bypass fat in in increasing the milk and FCM production. Supplementation of 10 g bypass fat per kg milk production produced beneficial results. period wise and increase in fat percent was also linear from T1 to T4 indicating positive response of milk fat percent to graded levels of bypass fat supplementation i.e. 10 g, 20 g and 30 g per kg of liter milk production. Under Indian conditions milk prices are solely determined on fat percent and hence, any increase in milk fat percent will fetch higher prices for milk producer. Mean SNF percent during different periods from P1 to P13 and overall SNF is presented in Table 3 and Figure 2. Enriching the ration with bypass fat had no significant effect on SNF during different periods of milk production and also on overall SNF percent during entire study. It might be seen that SNF percent gradually declined from P1 to P13 and the decline was linear, opposite to that of milk fat percent. Feeding of protected tallow (Sharma et al., 1978), CSFA (Grumer, 1988, Kent and Arambel, 1988, Schauff and Clark, 1989, Klusmeyer et al.,1991, Schauff and Clark, 1992, Kim et al.,1993, Wu et al.,1994 and Sirohi et al., 2007) and bypass fat (Shankhpal et al., 2009) did not have any significant effect on SNF percent in milk. Andrew et al. (1991) reported that feeding of calcium salts of fatty acid reduced SNF percent in milk. Total solids content in milk was at par under four treatment groups during different periods, except P8, P9 and P10. Effect of bypass fat on total solid percent in milk was non-significant. However during a period 8, 9 and 10, differences among treatments (P<0.05) were significant. Overall total solid percent during entire experiment period was different significantly (P<0.05) among the treatments. During P8, P9 and P10 and overall total solid percent in milk was at par in T1 and T2, which, differed significantly from T3 and T4 which are again at par. Supplemental by pass fat feeding increased the percent total solids in T2, T3 Milk Composition Overall milk fat percent was significantly (P<0.05) higher in T4 followed by T3, T2 and T1 and they were 6.26±0.15, 6.58±0.08, 7.04±0.20 and 7.12±0.60, respectively for T1, T2, T3 and T4(Table 3 and Figure 2). T1 was at par with T2 while T2 was at par with T3 but lower than T4. Period effect on milk fat was linear though non-significant, except, during P6, P7, P8, P9 and P10. Total milk fat yield during the experimental period was 73.42±5.07, 95.42±8.18, 78.31±7.29 and 91.84±8.85 kg. in T1, T2, T3 and T4 respectively with non-significant differences. Sharma et al. (1978) and Schneider et al. (1988) reported significant (P<0.05) increase in milk fat when protected tallow and calcium salts of fatty acids were fed to Holstein cows. Grummer (1988), Kent and Arambel (1988), Schauff and Clark (1989), Canale et al. (1990), Klusmeyer et al. (1991), Andrew et al. (1991) did not find any significant effect of bypass fat feeding on milk fat percent. Response of lactating buffaloes to bypass fat feeding in the present experiment was linear 115 Buffalo Bulletin (March 2015) Vol.34 No.1 and T4 by 2.26%, 5.73% and 4.93%, respectively over control groups of animals. Kim et al. (1993) did not find any significant difference in percent total solid in milk in lactating dairy cows that were offered calcium salts of fatty acid. Protein percent in milk was also nonsignificant during 13 fortnights(Table 3 Figure 2). Overall protein percent during the experimental period was non-significant and is in consonance with the findings of Sirohi et al., (2007). Fat, SNF and total solids are highly variable constituents in milk, while protein, ash and lactose remain more or less same and remain unaffected by feeding different regimens. The present study indicated non-significant effect of bypass fat feedings at 10, 20 and 30 g per liter of milk and no significant effect on percent total protein and ash content. and clark (1989) observed that feeding of Ca salts or prilled fat did not affect DM required for kg milk production. However, Moallem et al. (2000) observed significantly higher DMI per kg FCM production in CSFA fed cows than in control group and still higher DMI in BST treatment offered cows compared to other cows. DMI per kg milk production recorded in present experiment appears to be on the higher side than the findings of above research workers. Reason could be higher body weight of Jaffrabadi buffaloes requiring higher maintenance requirement and high fat percent in milk again requiring higher level of nutrients intake. However CP intake, DCP intake and TDN intake required per kg milk production appeared to be in agreement with values reported by Tyagi and Thakur (2007) and Shankhpal et al. (2009). Supplementation of bypass fat 10 g per liter milk production appeared to be bearing positive effect in influencing lower DMI, CPI, DCPI and TDNI per kg of milk production in lactating Jaffrabadi buffaloes. Present experimental results indicate that supplementation of bypass fat10 g/kg milk resulted in higher milk yield, milk fat % . Feeding of supplementary fat 10, 20 and 30 g increased total solids content and yield in Jaffrabadi buffaloes. Prepartum feeding of bypass fat seems to be beneficial in eliciting positive response in lactating buffaloes throughout the experimental period of interest to this study is the fact that buffalo milk in India is mainly used for Ghee and Khoa making and hence highly total solids yield is economically beneficial to dairy farmers. Efficiency of nutrients for milk production DMI, CP, DCP and TDN required for kg milk production is given in Table 4 and Figure 3a and 3b for T1, T2, T3 and T4 groups. Varying levels of bypass fat supplement did not influence significantly DMI required for 1 kg milk production during different periods and during the entire experiment. However CP and DCP intakes required for 1 kg milk production significantly (P<0.05) differed during P3, while, remaining at par during other periods. During P3, T1 and T2 group of buffaloes required significantly (P<0.05) lower CP and DCP per kg milk production in comparison to T3 and T4 groups. TDN intake per kg milk production was not influenced by supplemental by pass fat feeding during different periods as well as during the entire experimental period. Kent and Arambel (1988) recorded that supplementation of 223 g of Ca salt of long chain fatty acid offered daily as a top dress did not influence DMI in lactating dairy cows compared to control. Schauff REFERENCES Andrew, S.M., H.E. Tyrrell, C.K. Reynolds and 116 117 P2 6.04 ± 0.43 7.27 ± 0.77 6.85 ± 0.79 6.81 ± 0.52 0.64 NS 23.52 P1 4.58 ± 0.39 5.42 ± 0.51 4.73 ± 0.37 5.12 ± 0.52 0.45 NS 22.34 6.59 ± 0.37 8.48 ± 0.74 6.82 ± 0.85 5.69 ± 0.95 0.76 NS 27 P3 6.97 ± 0.36 8.57 ± 0.90 6.85 ± 0.96 7.19 ± 0.46 0.72 NS 23.86 P4 6.71 ± 0.53 8.45 ± 0.79 6.58 ± 0.76 7.68 ± 0.35 0.63 NS 21.07 P5 6.76 ± 0.50 8.60 ± 0.68 6.56 ± 0.78 7.63 ± 0.44 0.61 NS 20.38 P6 P7 6.75 ± 0.61 8.39 ± 0.82 6.69 ± 0.86 7.70 ± 0.39 0.69 NS 23.01 Means in a column with different superscripts differ significantly (p<0.05). S.Em.± C.D. at 5 % C.V. % T4 T3 T2 T1 Treatment 6.79 ± 0.57 8.42 ± 0.72 6.80 ± 0.92 7.65 ± 0.49 0.69 NS 22.92 P8 6.75 ± 0.46 7.74 ± 0.71 6.92 ± 0.95 7.56 ± 0.46 0.67 NS 22.83 P9 6.50 ± 0.58 7.86 ± 0.80 6.19 ± 0.74 7.51 ± 0.37 0.64 NS 22.49 P10 Table 1. Average daily milk yield (kg) of lactating Jaffrabadi buffaloes during different phase of experiment. 6.41bc ± 0.49 8.39a ± 0.80 4.68c ± 0.87 7.47ab ± 0.25 0.65 1.92 23.71 P11 P13 6.22 ± 0.51 7.79 ± 0.71 5.14 ± 0.88 6.55 ± 0.26 0.63 NS 24.15 P12 6.52abc ± 0.51 8.10a ± 0.68 5.09c ± 0.93 7.08ab ± 0.36 0.65 1.92 23.9 6.43 ± 0.44 7.96 ± 0.67 6.15 ± 0.56 7.05 ± 0.36 0.52 NS 18.64 Overall Buffalo Bulletin (March 2015) Vol.34 No.1 118 P1 4.35 ± 0.32 5.58 ± 0.52 5.04 ± 0.44 5.42 ± 0.75 0.52 NS 25.44 P2 5.74 ± 0.37 7.07 ± 0.75 6.87 ± 0.86 6.82 ± 0.59 0.66 NS 24.75 P3 6.48 ± 0.42 8.65 ± 0.74 7.18 ± 1.18 5.92 ± 1.03 0.89 NS 31.1 P4 7.05 ± 0.39 8.87 ± 0.96 7.24 ± 1.18 7.54 ± 0.54 0.82 NS 26.29 P5 6.76 ± 0.57 8.70 ± 0.88 7.36 ± 1.12 8.03 ± 0.35 0.78 NS 24.99 P6 6.69 ± 0.46 8.64 ± 0.70 7.13 ± 0.88 8.20 ± 0.55 0.66 NS 21.24 P7 6.79 ± 0.70 8.61 ± 0.88 7.29 ± 0.91 8.59 ± 0.57 0.77 NS 24.35 P8 6.67 ± 0.53 8.92 ± 0.80 7.59 ± 0.97 9.00 ± 0.65 0.75 NS 23.07 Means in a column with different superscripts differ significantly (p<0.05) S.Em.± C.D. at 5 % C.V. % T4 T3 T2 T1 Treatment P9 6.90 ± 0.52 8.14 ± 0.78 7.87 ± 1.06 8.44 ± 0.65 0.77 NS 24.25 P10 6.66 ± 0.61 8.37 ± 0.93 7.04 ± 0.76 8.99 ± 0.49 0.71 NS 22.58 Table 2. Average daily FCM yield (kg) of lactating Jaffrabadi buffaloes during different phase of experiment. P11 6.96abc ± 0.75 9.34a ± 0.97 5.57c ± 1.02 9.02ab ± 0.59 0.85 2.50 26.98 P12 7.37abc ± 0.90 9.44a ± 0.83 6.15c ± 1.11 8.90ab ± 0.37 0.84 2.49 26 P13 7.79 ± 0.61 10.17 ± 0.96 6.81 ± 1.18 9.02 ± 0.47 0.84 NS 24.63 Overall 6.63 ± 0.49 8.50 ± 0.72 6.86 ± 0.64 7.99 ± 0.48 0.59 NS 19.3 Buffalo Bulletin (March 2015) Vol.34 No.1 Fat % 6.26c ± 0.15 6.58bc ± 0.08 7.04ab ± 0.20 7.12a ± 0.16 0.15 0.45 5.63 SNF % 8.76 ± 0.07 8.77 ± 0.12 8.83 ± 0.09 8.64 ± 0.09 0.09 NS 2.7 Total solid % 15.02c ± 0.16 15.36bc ± 0.16 15.88a ± 0.14 15.76ab ± 0.12 0.14 0.42 2.28 Protein % 4.13 ± 0.08 4.23 ± 0.05 4.18 ± 0.05 4.26 ± 0.04 0.05 NS 3.34 Ash % 0.94 ± 0.00 0.94 ± 0.01 0.91 ± 0.01 0.93 ± 0.00 0.01 NS 2.93 119 DMI (kg) / kg milk production 2.80 ± 0.20 2.38 ± 0.19 3.19 ± 0.33 2.46 ± 0.08 0.21 NS 19.86 TREATMENT T1 T2 T3 T4 S.Em.± C.D. at 5 % C.V. % 261.69 ± 12..28 234.97 ± 13.78 308.78 ± 32.60 252.22 ± 5.83 18.96 NS 17.57 CPI (g/day) / kg milk production 132.11 ± 4.58 122.24 ± 5.91 158.61 ± 16..96 133.46 ± 2.67 9.4 NS 16.79 DCPI (g/day) / kg milk production 1.18 ± 0.09 1.02 ± 0.07 1.35 ± 0.14 1.05 ± 0.03 0.09 NS 19.36 TDNI (kg/day) / kg milk production Table 4. Overall DMI (kg), CPI (g/day), DCPI (g/day) and TDNI (kg/day) per kg milk production of lactating Jaffrabadi buffaloes. Means in a column with different superscripts differ significantly (p<0.05). Treatment T1 T2 T3 T4 S.Em.± C.D. at 5 % C.V. % Table 3. Overall Fat, SNF, total solid, protein and ash percent of lactating Jaffrabadi buffaloes. Buffalo Bulletin (March 2015) Vol.34 No.1 Buffalo Bulletin (March 2015) Vol.34 No.1 Figure 1. Average dairy milk yield (kg) of lactating Jafrabadi buffaloes during different phase of experiment. Figure 2. Overall fat, SNF, total solid, protein and ash percent of lactating Jafrabadi buffaloes. 120 Buffalo Bulletin (March 2015) Vol.34 No.1 Figure 3a. Overall DMI (kg) and TDNI (kg) per kg milk production of lactating Jafrabadi buffaloes. Figure 3b. Overall CPI (g) and DCPI (g) per kg milk production of lactating Jafrabadi buffaloes. 121 Buffalo Bulletin (March 2015) Vol.34 No.1 Ludens. 1993. Supplemental dietary fat from extruded soybeans and calcium soaps of fatty acids for lactating dairy cows. J. Dairy Sci., 76(11): 197-204. Klusmeyer, T.H., G.L. Lynch and J.H. Clark. 1991. Effect of calcium salts of fatty acids and protein source on ruminal fermentation and nutrient flow to duodenum of cows. J. Dairy Sci., 74(7): 2206-2219. Moallem, U., Y. Folman and D. Sklan. 2000. Effect of somatotropin and dietary calcium soaps of fatty acids in early lactation on milk production, dry matter intake, and energy balance of high-yielding dairy cows. J. Dairy Sci., 83(9): 2085-2094. Palmquist, D.L. 1988. Use of fats in diets of lactating dairy cows, p. 357. In Wiseman, J. (ed.) Fats in Animal Nutrition. Butterworths, Londan, U.K. Rice, V.A., F.N. Andrew, E.J. Warnick and J.E. Legates. 1970. Breeding and Improvement of Farm Animals, 6th ed. Tata Mc Graw Hill R.A. Erdman. 1991. Net energy for lactation of calcium salts of long-chain fatty acids for cows fed silage-based diets. J. 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Chemical analysis of milk, IS: 1479, Indian Standards Institution, New Delhi, India. Jenkins, T.C. and B.F. Jenny. 1989. Effect of hydrogenated fat on feed intake, nutrient digestion and lactation performance of dairy cows. J. Dairy Sci., 72(9): 2316-2324. Kent, B.A. and M.J. Arambel. 1988. Effect of calcium salts of long-chain fatty acids on dairy cows in early lactation. J. Dairy Sci. 71(1): 2412-2415. Kim, Y.K., D.J. Schingoethe, D.P. Casper and F.C. Publishing Co., Bombay, India. Schauff, D.I. and I.H.Clark. 1989. Effect of prilled fatty acids and calcium salts of fatty acids on rumen fermentation, nutrient digestibilities, milk production, and milk composition. J. Dairy Sci., 72(4): 917-927. Schauff, D.I. and I.H. Clark. 1992. Effect of feeding diets containing calcium salts of long-chain fatty acids to lactating dairy cows. J. Dairy Sci., 75(11): 2990-3002. Schneider, P.L., D. Sklan, W. Chalupa and D.S. Kronfeld. 1988. Feeding calcium salts of fatty acids to lactating cows. J. Dairy Sci., 71(8): 2143-2150. Shankhpal, S.S., R.S. Gupta, S. Parnerkar and A.J. Dharni. 2009. Effect of supplementation of bypass fat on milk production and nutrient 122 Buffalo Bulletin (March 2015) Vol.34 No.1 utilization in lactating cows, p. 247. In Proceedings of Animal Nutrition Association World Conference. New Delhi, India. Sharma, H.R., J.R. Ingalls and J.A. McKirdy. 1978. Replacing barley with protected tallow in ration of lactating Holstein cows. J. Dairy Sci., 61(5): 574-583. Sirohi, S.K., S.S. Thakur, T.K. Walli, R.K. Kohli and R. Malik. 2007. Effect of supplementing protected fat on nutrient utilization, lactation performance and reproductive performance of crossbred cows, p. 269-270. In Proceedings of International Tropical Animal Nutrition Conference, NDRI Karnal, India. Snedecor, G.W. and W.G. Cocharan. 1994. Statistical Methods, 8th ed. Affiliated EastWest Press Pvt. Lts., New Delhi, India. Tyagi, N. and S.S. Thakur. 2007. Effect of supplementing protected fat on· nutrient utilization, lactation performance and reproductive performance of crossbred cows, p. 269-270. In Proceeding of International Tropical Animal Nutrition Conference, NDRI Karnal, India. Wu, Z., J.T. Huber, S.C. Chan, J.M. Simas, K.H. Chen, J.G. Verela, F. Santos, C. Fontes and P. Yu. 1994. Effect of source and amount of supplemental fat on lactation and digestion in cows. J. Dairy Sci., 77(6): 1644-1651. 123 Original Article Buffalo Bulletin (March 2015) Vol.34 No.1 REAL TIME PCR- AN APPROACH TO DETECT MEAT ADULTERATION Rajni Kumari1, D.N. Rank2, Sanjay Kumar2, C.G. Joshi2 and S.V. Lal2 ABSTRACT melting peaks on DNA templates from sheep, goat and chicken. Thus, Real Time PCR was found to be successful in differentiating cattle and buffalo mixed meat samples. The present study was carried out for the identification of cattle and buffalo meat from a mixed meat sample using cyt b gene variability by Real Time PCR. In Real Time PCR, the common forward primer with cattle specific reverse primer showed melting peak 76.2oC on cattle DNA while Keywords: cattle, buffalo, meat speciation, cytochrome b gene, duplex Real Time PCR the common forward primer with buffalo specific reverse primers showed melting peak at 78.2oC on buffalo DNA. Even in duplex PCR it showed only species specific melting peaks in respective species DNA. But when duplex PCR was evaluated on cattle- buffalo mixed DNA template in equal proportion it exhibited two peaks, a major buffalo specific and a minor cattle specific, merging into one broader peak at 78.2oC. However it was possible to know presence of mixed DNA by Real Time PCR duplex primers. The duplex Real Time PCR showed only a single broader peak at 78.2oC at 1: 10 and all further ratios. Hence all independent cattle specific Real Time PCR was run on mixed DNA which produced cattle specific melting peak at 76.2oC upto 1:1000 dilutions. Thus, it was possible to detect and differentiate cattle meat mixed in buffalo meat upto 1:1000 fraction i.e. 9 pg of cattle DNA adulterated in buffalo DNA by running a duplex PCR followed by cattle specific Real Time PCR. Duplex Real Time PCR did not produce any amplification and INTRODUCTION The determination of food authenticity and the detection of adulteration are major issues in the food industry which attract immense attention. Species identification of animal products especially meat (Ahmed et al., 2007) has always been in demand. The prime concern remains with adulteration of cattle meat with the buffalo meat in countries like Australia, America, and India because of health and religious reasons. The buffalo meat is very similar to beef but it is considered a healthier alternative because buffalo meat contains less fat 1.8%, lowest cholesterol level of all domestic meats -46 mg per 100 grams and more protein than beef. It contains significant amounts of omega-3 polyunsaturated fats, which are believed to be protective against heart disease and other inflammatory disorders.all this makes buffalo meat consumers choice mainly because of health 1 Animal Biotechnology, ICAR Research Complex for Eastern Region (ICAR- RCER), Patna, P.O.- BVCC., Patna, India, *E-mail: drrajnikumari@rediffmail.com 2 Animal Biotechnology, Anand Veterinary College, Anand, Gujarat, India 124 Buffalo Bulletin (March 2015) Vol.34 No.1 reasons. Buffalo meat fat is white and buffalo meat is always darker in color than beef because of more pigmentation or less intramuscular fat. So, both meats can be differentiated easily based upon gross appearance. But, differentiation of cooked meat is a challenge. Hence, proper meat identification methods are required especially for cattle and buffalo for preventing the illegal practice. Until now, a vast array of techniques has been developed for this purpose, each beset with its own limitations. These can be broadly divided into protein-based methods and nucleic acid based techniques. Nucleic acid based techniques; popularly known as molecular techniques involve the DNA analysis. Analysis of DNA, rather than protein has been exploited for species identification due to its stability at high temperatures and its conserved structure within all tissues of an individual. DNA based techniques have been further simplified and benefited from introduction of PCR. Number of strategies has been employed in PCR including use of repitive sequences, multigene family and use of cytochrome b gene (Fairbrother et al., 1998; Matsunaga et al., 1999; Girish et al., 2005; Haunshi et al., 2009). However, the method was not able to differentiate cattle and buffalo meats. Only a few studies have addressed differentiation of cattle meat and buffalo meat (Rajapaksha et al., 2003; Rastogi et al., 2007; Gupta et al., 2011). But the detection and assessment of cattle meat adulteration in buffalo meat still remains a challenge. All these studies based on traditional PCR based methods are very sensitive but they suffer from some limitations. The methods require Time PCR, the technique is simplified. Real-Time PCR does not only depict amplification in real time (on line or live), but is also a quantitative one. Real Time PCR detects PCR products using fluorescent probes or a DNA binding dye, such as SYBR Green. Real-time PCR assays can be automated and are sensitive and rapid. They can quantify PCR products with greater reproducibility while eliminating the need for post-PCR processing, thus preventing carryover contamination (Jothikumard et al., 2002). The present study focused on identification of cattle and buffalo meat from a mixed meat sample using cyt b gene variability by Real Time PCR. Further the study also targeted the assessment of adulteration of cattle meat in buffalo meat. MATERIALS AND METHODS DNA extraction from muscle samples Meat samples (twenty each) from cattle, buffalo, sheep, goat and chicken were procured from slaughter house /market or obtained through biopsy and were processed immediately or stored frozen at -40oC. DNA from meat samples was extracted as per the standard protocol described by Ausubel et al., (1987) with some modifications. Muscle tissue (0.25 g) was taken and ground thoroughly with the frequent additions of liquid nitrogen. The tissue homogenate was transferred into a 15 ml sterile tube and mixed with 0.5 ml Lysis buffer - ST (50 mM Tris-HCl, 10 MmM EDTA, 100 mM NaCl) along with 20 mg /ml proteinase K and SDS (10%) to make final concentration to 2%. The homogenate was incubated for 12-16 h or overnight at 55oC. The incubated lysate post-PCR product separation by gel electrophoresis which is time-consuming and increases the chances of carryover contamination. With the advent of Real was transferred to an autoclaved 15 ml tube and 125 Buffalo Bulletin (March 2015) Vol.34 No.1 duplex Real Time PCR. equal volume 0.5 ml of Tris saturated phenol (pH-8.0) was added and mixed gently for 10 minutes. The lysate was then centrifuged for 10 minutes at 10,000 rpm at 15oC. The supernatant was collected into the 2 ml tube and added half the volume of Tris saturated phenol : chloroform: isoamyl alcohol (25:24:1) and mixed gently for 10 minutes and centrifuged for 10 minutes at 10.000 rpm at 15oC. Again, the supernatant was collected into 2 ml centrifuge tube and equal volume of chloroform: isoamylalcohol (24:1) was added and mixed gently for 10 minutes and centrifuged for 10 minutes at 10,000 rpm at 15oC. The supernatant was collected into a fresh 2 ml centrifuge tube and 1/10th volume of 3 M sodium acetate (pH 5.5) and RESULTS AND DISCUSSION DNA amplification was detected by use of the Real Time sequence detection system 7500 from Applied Biosystems. On the completion of duplex Real Time PCR, characteristic peaks were observed for cattle and buffalo species. Peak was observed at the melting temperatures of 76.2oC and 78.2oC in case of cattle and buffalo DNA respectively (Graph 1). Targeted amplification on Real Time PCR was confirmed by agar gel electrophoresis of PCR products. PCR products 5 μl were mixed with 1 μl gel loading dye solution and loaded in a 2% agarose gel containing 1% ethidium bromide 5 μl/ 100 ml in tris- borate EDTA (TBE) buffer. Electrophoretic separation of DNA fragments was done at 100 V for 60 minutes. A characteristic band pattern was obtained for cattle and buffalo species in duplex PCR. The PCR products showed species specific DNA fragments of 113 and 152 bps from cattle and buffalo respectively. By using the same set of primers detection of other species viz., sheep, goat and poultry meat DNA was also attempted. No amplification occurred in other species, and so no band pattern was obtained for goat, sheep and chicken species (Graph 2 and 3) eliminating the chances of cross amplification. Further, Real Time PCR was used to assess the level of adulteration of cattle meat in buffalo meat. DNA samples of cattle and buffalo meat were mixed in ratios of 1:1, 1:10, 1:100, 1:1000, and 1:10000 respectively. On melt curve analysis of meat sample containing cattle and buffalo meats equal volume of isopropyl alcohol was added. The DNA was precipitated by slowly swirling the tube. Precipitated DNA was washed thrice with 70% ethanol to remove excess salt and air dried and dissolved in 200 μl volume of 0.3 x TE. The quality and quantity of extracted DNA was checked by nanodrop and by running on 0.8% agarose gel. Gene amplification by Real Time PCR Amplification was performed in 25 μl reaction volume containing 12.5 μl QuantiTect TM SYBR Green PCR master mix (2X), 2 μl primer mix (0.4- 10 pm each), 3 μl (90 ng template DNA) and 7.5μl QuantiTect DNAse Free water. Speciesspecific oligonucleotide primers reported by (Rea et al., 2001 ) consisting of common forward primer CONP- F-2 (5’- CTT CTT ATT CGC ATA CGC AAT CTT ACG ATC- 3’) and reverse primers, cattle primer BOVP- R- 2 (5’- TGG AGG TGT GTA GTA GGG GGA TTA GAG CA- 3’) and buffalo primerBUFP- R-2 (5’- GGC ATT GGC TGA ATG GCC GGA ACA TCA TA-3’) were used. These primers were mixed in ratio of 1: 1: 0.4 for CONP- F-2: BOVP- R-2: BUFP- R-2 and used together for the 126 Buffalo Bulletin (March 2015) Vol.34 No.1 developed to quantify bovine contamination in buffalo products. A quantification procedure is proposed and involves amplifying a sample with both primer sets and then normalizing the total DNA using the total non-normalized bovine and buffalo DNA. To correct for the potential deviations between the real and measured DNA quantity caused by biological differences between species, the use of calibration curves generated from each analyzed matrix is proposed. This method is yet to be checked on meat derived products. The present study based on Real-Time chemistries allow for the detection of PCR amplification during the early phases of the reaction. Real Time PCR overcomes the limitations of end point PCR. Many times meat samples brought to the laboratory are cooked, putrified or semiputrified in nature. So, Real Time PCR was used for these samples and was found very sensitive and successfully amplified small fragment of cytochrome b gene from these cooked and putrified meat samples. The use of mt DNA in this study further increases the chances of achieving a positive result even in the case of samples suffering severe DNA fragmentation due to intense processing conditions (Bellagamba et al., 2001). Detection of meat adulteration simultaneously creates the need of the assessment of adulteration level. Andreo et al., (2006) assessed the level of adulteration in a series of DNA mixtures, containing (in percentage) 1/99, 5/95, 10/ 90, 40/60, 50/50, 60/40, 90/10, 95/5, and 99/1 ratios of cattle/ horse, cattle/wallaroo, pork/horse, and pork/wallaroo by using duplex Real Time PCR. The smaller percentage allowing identification of the peaks in double-species duplex reactions were established as follows: 5% (cattle or wallaroo) in cattle/ wallaroo mixtures, 5% pork and 1% horse in mixed in the ratio of 1:1, cattle (76.2oC) and buffalo (78.2oC) specific peaks were found merged to give a broader peak (Graph 4). But on all further ratios (i.e. 1:10 to 1:1000) cattle specific amplicon peaked much lower and hence shadowed under major buffalo specific peak at 78.2oC (Graph 5). This posed a limit in detecting mixed meats beyond 1:10 ratios. To overcome this problem, another Real-Time PCR using only cattle specific reverse was required to amplify cattle genome in these ratios. The cattle specific Real-Time PCR successfully amplified cattle sequences at all the ratios except 1:10,000 in quantitative manner (Graph 6). At 1:10,000 ratio only buffalo specific peak was obtained when duplex Real-Time PCR was attempted (Graph 7). To verify presence of cattle specific template, the mixed template was amplified with cattle specific primers. However, this yielded no amplification. This confirmed that both of the species continued to give amplification up to 1:1000 ratios of admixture. However, at 1:10000 ratios, only buffalo species gave amplification. Thus, duplex Real Time PCR was found successful in detecting upto 1:1000 ratio of cattle into buffalo DNA admixture. In absolute quantity this comes to detection of 9 pg of cattle DNA adulterated in buffalo DNA. The duplex Real Time PCR could detect upto 1:10000 ratio of DNA admixture i.e. up to 9 pg of cattle DNA adulterated in buffalo DNA. Thus, it was possible to detect and differentiate cattle meat mixed in buffalo meat upto 1: 1000 fraction i.e. 9 pg of cattle DNA adulterated in buffalo DNA by running a duplex PCR followed by cattle specific Real Time PCR. Similar results were obtained by (Rea et al., 2001 ; Gupta et al., 2011) but the study was carried out on milk samples and meat samples respectively which was based on duplex PCR and required post PCR processing and was not quantitative. Recently, (Drummond et al., 2013) Real Time PCR based method has been 127 Buffalo Bulletin (March 2015) Vol.34 No.1 REFERENCES porcine/horse mixtures, 60% pork and 1% wallaroo in porcine/wallaroo mixtures, and 1% cattle and 5% horse in cattle/horse mixtures. In all cases, 1% corresponded to 0.4 ng of DNA. This study did not include DNA from buffalo meat. Thus, the current method is much more sensitive than one reported by an Andreo et al. (2006). Ahmed, M.M.M., S.R. Abdel and E. Hanafy. 2007. Amplification of species specific polymerase chain reaction and for different meat species authentification. Biotechnology, 6: 426430. Andreo, L.M., L. Lugo, A.G. Pertierra and A. Puyet. 2006. Evaluation of post- polymerase chain reaction melting temperature analysis for meat species identification in mixed DNA samples. J. Agric. Food Chem., 54: 79737978. Ausubel, F.M., R. Brent, R.E. Kingston, D.D. Moore, J.G. Seidman, J.A. Smith and K. Strehl. 1987. Current Protocols in Molecular Biology. Green publishing associates and Wiley- Interscience, Newyork, USA. Bellagamba, F., V.M. Moreti, S. Cominicini and F. Valfre. 2001. Identification of species in animal feedstuffs by polymerase chain reaction–restriction fragment length polymorphism analysis of mitochondrial DNA. J. Agric. Food Chem., 49: 37753781. Fairbrother, K.S., A. J. Hopwood, A.K. Lockley and R.G. Bardsley. 1998. Meat speciation by restriction fragment length polymorphisms analysis using α- Actin cDNA probe. Meat Sci., 50: 105-114. Drummond, M.G., B.S.A.F. Brasil, L.S. Dalsecio, L.V. Texeira and D.A.A, Oliveira. 2013. A verasatile real time PCR method to quantify bovine contamination in buffalo products. Food Control, 29: 131-137. Girish, P.S., A.S.R. Anjaneyulu, K.N. Viswas, N. Rajkumar, M. Anand, B.M. Shivakumar and B. Sharma. 2005. Meat species identification by polymerase chain reaction- CONCLUSION A reliable and sensitive method for identification and differentiation of buffalo meat from mixed meats, particularly containing cattle meat is not currently available and is highly warranted. Present study was carried out to develop a Real Time PCR based test for identification and differentiation particularly of cattle and buffalo meat. The results obtained in this study demonstrate the suitability of duplex Real Time PCR analysis of the cyt b gene to differentiate cattle and buffalo meat. Nevertheless, Real Time PCR assay developed in the present study was found to be very sensitive and specific to detect adulteration of cattle meat in buffalo meat such that it can be adopted in an advanced lab like forensic lab. ACKNOWLEDGEMENTS This research was supported by the Department of Animal Biotechnology, Department of Animal Genetics and Breeding and Department of Surgery, College of Veterinary Science and Animal Husbandry, Anand Agricultural University, Anand, Gujarat. 128 Buffalo Bulletin (March 2015) Vol.34 No.1 restriction fragment length polymorphism (PCR RFLP) of mitochondrial 12S rRNA gene. Meat Sci., 70: 107-112. Gupta, R., D.N. Rank and C.G. Joshi. 2011. DuplexPCR for identification and differentiation of cattle and buffalo processed meat. Journal of Advanced Veterinary Research, 1: 13-16. Haunshi, S., R. Basumatary, P.S. Girish, S. Doley, R.K. Bardoloi and A. Kumar. 2009. Identification of chicken, duck, pigeon and pig meat by species-specific markers of mitochondrial origin. Meat Sci., 83: 454459 Jain, Shally, M.N. Brahmbhatt, D.N. Rank, C.G. Joshi and J.V. Solanki. 2007. Use of cytochrome b gene variability in detecting meat species by multiplex PCR assay. Indian J. Anim. 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Dairy Res., 68: 689- 698 129 Buffalo Bulletin (March 2015) Vol.34 No.1 Original Article THE USE OF TROPICAL OF MULTIPROPOSES TREES AS A FEED SUPPLEMENT TO THAI SWAMP BUFFALOES (BUBALUS BUBALIS) RECIVING A BASAL DIET OF PANGOLA HAY Thongsuk Jetana1,*, Sunworn Usawang1 and Sunpetch Sophon2 supplementary diet was more worthy of improving feeding systems than the use single high proportions of TMPTs containing readily soluble carbohydrates for buffaloes due to each tropical multipurpose trees have its own limitation for using as a feed in particularly when gives it to animals. ABSTRACT The effects of tropical multipurpose trees (TMPTs) on digestibility of nutrients, nitrogen (N) balance, and ruminal microbial production, rates of passage and blood metabolites in four swamp buffaloes were studied. Animals were fed with pangola hay as a basal diet and one of the four TMPTs supplements: i) urea+cassava meal (UCSM), ii) sun-dried leucaena leaves (SDLL), iii) SDLL+Sun-dried pod of rain tree (SRTP) [LLRT] and iv) SRTP. Dry matter (DM) and organic matter (OM) digestibility in buffaloes supplemented with UCSM and SRTP respectively, increased higher (P<0.05) than in buffaloes fed other supplements, but NDF digestion decreased (P<0.05). N digestibility in animals improved (P<0.05) when supplemented UCSM. There was no difference PD excretion in the urine and affects the passage rate parameters of buffaloes fed different supplements. Plasma urea-N and glucose were higher (P<0.05) in animals fed SRTP supplements than in animals fed other supplements. None of supplement affected plasma none-esterified fatty acids (NEFA) and beta- hydroxy butyrate (β-HBA). The study demonstrated the use low proportions of TMPTs containing readily soluble carbohydrates (starch or sugar) in combination of Keywords: cassava meal, leucaena, pangola hay, rain tree pod, swamp buffalo INTRODUCTION The use of tropical multiple purpose trees as supplements (TMPTs) is a suitable and worthwhile method to improve the quality of livestock feeding systems (Jetana et al., 2010; Jetana et al., 2011), in addition it saves costs of other expensive ingredients (e.g., maize, soybean, and molasses and fish meal). Cassava (Manihot esculenta, Crantz) is vastly planted in tropical countries, particularly in Thailand. Cassava meal contains high level of readily soluble carbohydrates, but low N content and is highly degradable in the rumen comparing with other energy sources. Urea therefore is a highly rumen degradable non proteinnitrogen, always used as an N source when cassava meal is added in ruminant feed. At the present, Faculty of Veterinary Science, Chulalongkorn University, Henri Dunant street, Phathumwan, Bangkok, Thailand, *E-mail: Thongsuk.J@Chula.ac.th 2 Faculty of Veterinary Medicine, Mahanakorn University, Chueamsamphan Road, Khrtumrai, Khet Nong Chok, Bangkok, Thailand 1 130 Buffalo Bulletin (March 2015) Vol.34 No.1 MATERIALS AND METHODS the concentrates are expensive, therefore the use of local protein-rich legume or available multiple purpose trees are possible methods, not only saving cost of feeds, in particularly concentrates, but also being suitable to smallholder farmers and the large scale farms. One of the most widely used legumes is leucaena (Leucaena leucocephala). The appropriate proportions of leucaena can be used only 25% as in feed for buffaloes (Jetana et al., 2012a), however leucaena leaves might be fully used as a protein supplement in ruminants when animals are inoculating with Synergistes Jonesii (Palmer et al., 2010). The rain tree (Samanea Saman), is a tropical legume, with pods of rain tree easily to be found in dry season, it is shown that these have been used as an animal feed (Staples and Elevitch, 2006 and Jetana et al., 2008). Studies demonstrated that the high sugar and protein content in the rain tree pod has the advantage of increasing the efficiency of microbial growth in the rumen of buffaloes (Jetana et al., 2011), cattle (Jetana et al., 2010) and goats (Jetana et al., 2012b). The present study therefore, was undertaken to determine which of these tropical multiples proposes trees (TMPTs) supplements containing similar metabolizable energy (ME) are suitable to be fed as a protein supplement to Thai swamp buffalo fed a basal diet of pangola hay. The objectives of the experiments were to determine and compare the effects of supplementation with either three types of TMPTs; leucaena leaves, leucaena leaves plus RTP and RTP or urea plus cassava meal on whole tract apparent digestibility of DM, OM and fibre, rates of passage, N balance, ruminal microbial production and blood metabolite values. The experiment was conducted using four male swamp buffaloes (mean initial 274±1.24 kg, 18-24 month). The animals were daily fed pangola hay as a based diet on 1.0% of body weight and supplemented 1.0% of body weight with one of the four combination dietary supplements: (i). urea+cassava meal (UCSM); (ii). Sun-dried leucaena leaves (SDLL); (iii). Sun-dried leucaena leaves rain tree pods (LLRT) and (iv). Sun-dried rain tree pod (SRTP). Each supplement was formulated to provide similar the proportions of N and metabolizable energy (ME). Sun-dried leucaena and pods of rain tree were purchased from the farmer surrounding the Kasatsert University, Kampengseang campus, Narkorn Pathom and the cassava meal and other ingredients were purchased from the HungHong Company, Narkorn pathom. After purchasing the pods of rain tree were firstly ground through a 14-mm grinding plate prior to grinding twice passing through an 8-mm grinding plate using ≥5-Horsepower electrical meat grinder. The ground rain tree pods were drying by the Sun for 12-18 h and keeping in air-tight storages before using them. Whilst pangola hay was purchased from Animal Nutrition Cooperation, Chainat Province. The animals were fed equally amounts twice daily, 07.00 and 17.00 h. with four dietary supplements and pangola hay. Each buffalo was daily fed with 3.0 kg supplements; one of four dietary supplements and 3.0 kg of pangola hay. Total feed allocations were 6 kg fed basis (3 kg pangola hay + 3 kg supplement)/animal (ani)/d. Four animals were used over four cycles in a double 4×4 Latin square with four dietary supplements (Table 1). In each period, the animals were kept in individual pens and fed with the experimental diets. On the first day and the last day (d 20) of each experiment 131 Buffalo Bulletin (March 2015) Vol.34 No.1 Cr analysis. Blood samples from the jugular vein were collected at 0 h and at 3, 6 and 9 h after morning feed (d 15, 06:00h). Blood samples were drawn using a 2-way blood collection needle (Vacuette® AUSTRIA, Model 18 G × 1½) and transferred into two heparinised vacutainers (9 ml/tube) and one tube containing sodium fluoride and potassium oxalate (for non-esterified fatty acids analyses). The tubes were gently inverted a couple of times and immediately centrifuged at 3500 × g for 25 min. Individual plasma was stored in tubes (3-3.5 ml/tube) at -20oC for further analysis. The DM content of the feed and faecal samples was determined by drying to a constant weight in an oven at 105oC for 48 h. The ash in period, the animals were weighed before the morning feed (06.00 h). The study was conducted in 4 periods; each period lasted for 20 days, where 10 days were for dietary adaptation and 10 days for sample collection. The animals were housed in individual pens during the adaptation period, but were transferred to individual metabolic cages 2 days prior to urine and faeces collection. Whole tract in vivo digestibility was determined by collecting all faeces from day 1115 of the sample collection period. Sub-samples of the daily offered feed and faecal samples were collected and stored at -20ºC. Total daily feces were weighed and samples (10%) were then stored at 4 ºC for further chemical analysis. There was no feed refusal for each animal and fresh drinking water was supplied throughout the experiments. At the end of each sampling period, samples from each animal was bulked, and then dried in a hot air oven at 65 ºC for 48 h., prior to analysis for dry matter (DM), ash, nitrogen (N) and neutral detergent fibre (NDF). Urine was collected in plastic bag containing 200 ml of 20% H2SO4 to maintain a pH below 3. Total daily urine was weighed and subsamples were taken, diluted 5times with distilled water, and stored at 4ºC for purine derivatives (PD) analysis. Chromium (Cr) mordanted fiber was prepared from pangola hay. The pangola hay was ground through a 2-mm sieve following the method that was described by Uden et al. (1980). On day 16 each animal was dosed with 40 g of Cr III-mordanted (Cr = 560 mg) fiber by mixing it with 1.5 kg supplements fed in the morning, before the pangola hay were offered. Grabs samples of faeces (200-300 g) were collected at 0, 3, 6, 9, 16, 24, 32, 40, 48, 56, 63, 72, 79, 87, 96, 104, 112 and 120 h., after the marker administration. Grab faecal samples were kept at –20oC prior to ash DM and the feed and the faecal samples was determined by combustion in a muffle furnace at 550oC for 8 h. The N content in the feed, the urine and the faecal samples was determined by the micro Kjeldahl method (AOAC, 2000 method no. 995.04). NDF was analysed according to Van Soest et al. (1991; structure A). The content of total phenolic compounds and condensed tannins in samples were assayed by the procedures of Makkar (2000). Total non-structural carbohydrates in the feed were determined according to Nelson’s reducing sugar procedure (Hodge and Hofreiter, 1962). Matabolisable energy for ruminants (ME) were calculated according to Menke et al. (1979). Allantoin and uric acid were determined by the method described by IAEA-TECDOC-945 (1997). Plasma urea nitrogen (PUN) was measured by using a commercial kit (Urea liquiUV, Human GMbH-D 65205 Wiesbaden, Germany). Plasma glucose concentrations were measured by using a commercial kit (Glucose liquicolor, Human GMbH-D 65205 Wiesbaden, Germany). Plasma non-esterified fatty acid (NEFA) concentration 132 Buffalo Bulletin (March 2015) Vol.34 No.1 was analyzed using a commercial diagnostic kit (No. 279-75401, Wako Pure Chemical Ind. Osaka, Japan). Plasma β-HBA was analyzed using a commercial diagnostic kit (Randox Laboratories Ltd. Ardmore, Diamond Road, Crumlin, Co. Antrim, UK, BT29 4QY). Plasma insulin concentrations were determined by the kit manufacturer (Coat-ACount®-Insulin, Diagnostic Products Corporation, Los Angeles, CA, USA). Chromium (Cr) concentrations in the grab faecal samples were determined by the method described by Le Du and Penning (1982). Grab faecal samples were dried in an oven at 65ºC for 72 h and 105ºC for 48 h, then ashed in a muffle furnace at 450ºC, for 8 h. The ashes were then, digested with acid mixture and diluted before being analyzing Cr in an Atomic Absorption Spectrophotometer. The means of each parameter measured in this study were analysed by Analysis of Variance (ANOVA) using the procedures of the Statistical Analysis System Institute (SAS, 1998). The differences between means were compared by a least significant difference method (LSD). et al. (1979). The DM content of CSM, SDL and RTP were similar (890-913 g/kg as fed-basis) and the N contents of SDL and RTP diets were quite similar (39.4-39.6 g/kg DM), but they were higher than CSM (5.06 g/kg DM). Including, the content of condensed tannins varied widely among the different TMPTs, ranging from 4.49, 18.4, 13.5 and 4.45 g/kg DM in CSM, SDL, RTP and pangola hay, respectively. Similarly, the total sugar content also varied between SDL and RTP, being from 66.0 and 200 g/kg DM, respectively. However, the ME of CSM, SDL and RTP were the same value 10.0 MJ/ kg DM in among main materials. The ingredients (g/kg DM) and chemical composition of the supplements are presented in Table 3. Three different TMPTs mixed with other ingredients were used as protein supplements. The DM content of all supplements was similar (917920 g/kg as fed-basis) and the N contents of UCSM, SDLL, LLRT and SRTP supplemental diets were quite similar (19.1-19.8 g/kg DM). However, the content of condensed tannins varied widely among the different TMPTs, ranging from 0, 9.15, 7.92 and 6.68 g/kg DM in UCSM, SDLL, LLRT and SRTP, respectively. Similarly, total sugar content also varied among the different types of LPT, ranging from 0, 32.9, 65.4 and 98.9 g/kg DM in UCSM, SDLL, LLRT and SRTP, respectively. However, the ME of UCSM, SDLL, LLRT and SRTP were quite similar, within 9.16-9.20 MJ/kg DM. RESULTS AND DISCUSSION Chemical composition in ingredients of diets and supplements The ingredients (g/kg DM) of the feeds are presented in Table 2. The pangola hay was used as the basal diet and three different TMPTs; cassava meal, Sun-dried leaves, and Sun-dried rain tree pod were used as a main ingredient of protein supplements. The pangola hay contained 922 g DM/ kg as fed-basis, it contained (g/kg DM) 14.0 g N, 706 g NDF and 7.92 mega joules (MJ) of matabolisable energy for ruminants ME. Matabolizable energy for ruminants were calculated according to Menke Nutrients digestibility The DM and OM digestions increased (P<0.05) in swamp buffaloes fed UCSM and SRTP supplemental diets, but the NDF digestion decreased (P<0.05) when compared with buffaloes fed SDLL and LLRT supplemental diets. This was according to the supply of readily soluble carbohydrates, starch 133 Buffalo Bulletin (March 2015) Vol.34 No.1 from UCSM and sugar from SRTP in the rumen. However, OM digestion was higher in animals fed UCSM than in animals fed STRP. It may be the proportions of starch were higher (P<0.05) in UCSM than the proportions of sugar in SRTP; therefore OM digestion was greater (P<0.05) in buffaloes fed UCSM than in buffaloes fed SRTP. As a result of rapid fermentation of readily soluble carbohydrates was the pH reduction in the rumen, the decreased pH in the rumen has sequent a main impact on fiber digestion. In agreement with Jetana et al. (1998), who reported the depression in fiber digestion due to readily soluble carbohydrates have always been associated with rapid fermentation of readily soluble carbohydrates and the subsequent depression of ruminal pH when sheep fed guinea grass and supplemented with corn flour. While NDF digestion decreased (P<0.05) in buffaloes fed SRTP supplement, in similarly to the earlier reported that fibre digestion depressed in buffaloes when fed rice straw and supplemented with oven-dried rain tree pods (Jetana et al., 2010). The low pH in the rumen affected to ruminal microbial activities, in particularly cellulolytic bacteria (Stewart, 1977), therefore depressed fibre digestion reported by Cheng et al. (1984), who indicated low pH in the rumen prevented strong attachment of bacteria to plant cell wall. Besides of the low pH in the rumen, the longer lag time may be explained that the utilization of readily soluble carbohydrates before the degradation of fibre by rumen micro-organisms (Mertens, 1977). This was in agreement with Jetana et al. (2009b), they indicated there were no differences for k1, k2 and TMRT in swamp buffaloes fed diets containing different the proportions between pineapple waste silage and concentrates. In the present study, there was no significance different in k1 of the animals fed the different sources of TMTPs. This could be due to the particle size of TMTPs and rate of degradation in the rumen, which may be similar to all of the supplemental diets. However, the estimated for k1 in the present study 3.23-3.58 % h-1 were lower than the ranges of 7.70-11.3 % h-1 and 6.05-7.96 % h-1 in swamp buffaloes fed rice straw (Abdullah et al., 1990) and pineapple waste silage (Jetana et al., 2009b) as the basal diets, respectively. The passage rate (k2) of the marker solid particles in caecum-proximal colon (second compartment), which can be considered the digestive tract, the abomasum, in which the blend of digested feed take place showed that values were similar (6.55-7.72 % h-1) to all buffaloes fed different supplemental diets. These values were faster than in the range k2 of 2.90-4.10 % h-1 (Abdullah et al., 1990) and 4.04-4.21 % h-1 (Jetana et al., 2009). The time between the administration of the marker of solids and its first appearance in the faces (transit time, TT) did not result to be significantly difference in swamp buffaloes when fed different TMTPs in supplemental diets. Therefore, these implied that the different sources of TMTPs in supplemental diets in swamp buffaloes did not affect to the values of TT (1.29-1.57 h) and TMRT (44.1-50.1h). Rates of passages In present study, the reticulo-rumen passage rate in the first compartment (k1) of the Cr marker of the solid particles in the whole gastrointestinal tract evaluated by the multi-compartment model was not significantly different by treatment diets. N balance and N digestiblity The urinary-N excretion was higher 134 Buffalo Bulletin (March 2015) Vol.34 No.1 given a diet containing a high proportions of readily soluble carbohydrate (sucrose). (P<0.05) in animals supplemented with UCSM and SDLL than in animals supplemented with LLRT. This demonstrated that the over amount of ammonia-N in the rumen was absorbed passing rumen wall to blood circulation, but due to ammonia toxicity, thus ammonia would be converting to urea at the liver, then was readily cleared from renal, indicating that excess fermentable N sources always loss through the urine (Nolan, 1993). Whislt the urinary-N excretion decreased (P<0.05), but the faecal-N excretion increased (P<0.05), indicating the proteins may be attached with tannins before it appeared in the fecaes when animals supplemented with LLRT. This reflected that those N sources in the diets were excreted more via the faeces or hind gut fermentation. In the present study, none of supplements affected to N balance in buffaloes, this may imply that animals fed all supplemental diets showed similar synchrony between carbohydrate and N compounds in the rumen, due to the fact that the amount of CP (578-583 g/ani d-1) and ME intakes (47.1-47.3 MJ/ani d-1) were not different among diets. The N digestibilty improved (P<0.05) in swamp buffaloes supplemented with UCSM, as a result of urea is an effective degradation to ammonia-N in the rumen, and some rapidly degraded, were absorbed passing through the rumen wall and easily were loss by excreting into the urine. The effect of SRTP also improved N digestibilty in swamp buffaloes as a result of rain tree pod is a readily soluble carbohydrate, the increase in apparent ruminal N digestibility due to sugar is effective for capturing ammonia-N and N in the rumen, therefore, increased hind gut fermentation (high faecal-N output). This observation was in agreement with Howard et al. (2007) and Owens et al. (2008), who reported that generally the digestibility of N increased when the animal was Urinary purine derivatives excretion Excretion of PDs in the urine were no differences in swamp buffaloes fed the different supplemental diets. This was in contrast with Obara et al. (1994), Chamberlain et al. (1993) and Khalili and Huhtanen (1991), who found PDs excretion and microbial protein synthesis increased in sheep and cattle supplementation with sugar (sucrose). On the other hand, this was also contrast with the observations of Hall and Herejk (2001) and Hoover et al. (2006), they showed that the starch resulted in more microbial growth and microbial N production than sugar did. In present study, daily PDs excretion in the urine ranged from 0.64-0.80 μmol d-1/ BW0.75 in swamp buffaloes. This value was in the range of 0.54-1.76 mmold-1/BW0.75 that reported by Liang et al. (1999) but higher than the range of 0.19-0.24 mmol d-1/BW0.75 reported by Jetana et al. (2009b, 2011). The PDs excretion rates in swamp buffaloes (13.8-15.6 mmol PD/kg DOMI) were not different. The values for swamp buffaloes in the present study were about 2.5 times higher than those (4.6-6.34 mmol PD/kg DOMI) reported by Jetana et al. (2009b) and Chen et al. (1996). The lower excretion rate of PD per DOMI in swamp buffaloes as compared to other studies, which was recorded in the present study was in agreement with Vercoe (1976), Liang et al. (1994) and Jetana et al. (2009b) who earlier reported the lower in the rate of PD excretion in swamp buffaloes. The measurement of PDs excretion in the urine is a simple method which always uses for estimating microbial protein production from the rumen. Therefore, the results of calculated microbial supply can be expressed as a g microbial N per kg digestible organic matter in the rumen 135 Buffalo Bulletin (March 2015) Vol.34 No.1 (DOMR) (Chen and Gomez, 1995). However, this technique was not suitable to use for estimating ruminal microbial production in swamp buffaloes, surprisingly, it is different from others species such as sheep, goats and cattle. Due to rate excretion of PDs in the urine was always low in buffaloes differing from others animal species. It was possible that its directly related to the lower of renal clearance rate of plasma PD into the urine (Jetana et al., 2006) and the lower glomerular filtraation rates (GFR) in buffaloes than the other animal species (Norton et al., 1979). In addition to the differences in enzyme activities involved in the degradation and utilisation of purine in swamp buffalo, therefore xanthine and hypoxanthine in the urine were not determined in swamp buffaloes (Chen and Ørskov, 2003). On the other hand, swamp buffaloes might have a greater ability to recycle PDs in the blood and other tissues that degrade uric acid and allantoin into other metabolites prior to 1) excreting their metabolites in the urine, or 2) recycling as N sources for supplying in the rumen, therefore this is possible that level of NH3 in the rumen is always high, even buffoles were fed with low quality diets, they can be survine when compared with other animal species (Kennedy, 1990). blood systems. However, none of the supplements affected to plasma NEFA, indicating there was no any difference from the utilization of energy and the mobilization of reserve energy in all animals fed different supplements. It is probably due to i) the total ME intakes equaled among diets as mentioned above and ii) the total ME intakes did not only meet ME requirements of buffaloes in developing countries, but also higher than buffaloes requirement (Kearl, 1982). The concentrations of β-HBA in plasma showed the same level in swamp buffaloes when the animals were fed with different supplemental diets, this may be explained the proportions of butyrate in the rumen did not differ. Subsequently, butyrate in the rumen from rumen fermentation was similar converted to β-HBA in rumen epithelium, before passing into blood systems. Plasma insulin concentration tended to be lower (P<0.1) in animals fed supplemented diet containing UCSM. This may also explain the better capacity for protein/fat reserve mobilization for meat synthesis in animals supplemented with UCSM. The high starch but low N containing in cassava meal are the main factors affecting digestibility when this material is used as a feedstuff in ruminants, urea thus is required to fulfill N sources. At the present, both cassava meal and urea were rather expensive, as a consequence of cassava meal being not only use as a main raw material in starch industry, but also being use as a raw material in producing bio-fuels and urea being use as a fertilizer. Therefore, enhancing the cost of feed as well, it might be substitution of chicken dung or urine for urea so that saving cost, but N contents in chicken dung and urine are variable and also required time of process, improvement of techniques and cost of chicken dung. Thus, the use of cassava meal and urea as a feed for Blood metabolites Plasma urea-N was higher (P<0.05) in buffaloes fed SRTP supplements than in buffaloes fed other supplements. It may be that supply of sugar from RTP in the rumen resulted in increased proteolysis in the rumen; therefore some urea-N loss was higher by absorption through the rumen wall to the blood system. Plasma glucose was higher (P<0.05) in buffaloes fed SRTP supplements than in buffaloes fed other supplements. Due to the supply of sugar containing SRTP in the resulting in higher absorption through rumen wall into the 136 Buffalo Bulletin (March 2015) Vol.34 No.1 Table 1. The experimental design with four different tropical multipurpose trees (TMTPs) supplements and four animals of each species and body weight of each animal and period. Periods 1 2 3 4 no. 1 UCSM SRTP LLRT SDLL Swamp buffaloes no. 2 no. 3 SDLL LLRT UCSM SDLL SRTP UCSM LLRT SRTP no. 4 SRTP LLRT SDLL UCSM UCSM = urea plus cassava meal; SDLL = Sun-dried leucaena; LLRT= Sun-dried leucaena plus rain tree pod and SRTP = Sun-dried rain tree pod Table 2. Chemical composition in ingredients of diets. Dry matter (DM) Ash Nitrogen (N) Crude protein (N × 6.25) Neutral Detergent fibre (NDF) Phenolic compounds Condensed tannins (CT) Total starch1 Total sugar Reducing sugar Sucrose Metabolizable energy (MJ/kg DM) CSM 890 47.8 5.06 31.6 165 0.0 4.49 696 0.0 0.0 0.0 Ingredients of diets (g/kg DM basis) SDL RTP Pangola Hay 913 910 922 60.4 85.1 84.3 39.4 39.6 14.0 246 247 87.4 394 357 706 0.0 0.0 0.0 18.4 13.5 4.45 66.0 200 0.0 33.3 108 0.0 32.7 92.4 0.0 9.99 10.0 10.0 CSM = cassava meal; SDL = Sun-dried leucaena; RTP = Sun-dried rain tree pod Determination of starch as the procedures described by Southgate (1976) 1 137 7.92 Buffalo Bulletin (March 2015) Vol.34 No.1 Table 3. Ingredients of dietary supplements (kg on as fed basis) and chemical composition (g/kg DM basis). Supplements (kg as-fed basis) UCSM SDLL LLRT SRTP Urea 30.0 Sun-dried leucaena 500.0 250.0 Sun-dried rain tree pod 250.0 500.0 Cassava meal 797.5 327.5 327.5 327.5 Corn meal 50.0 50.0 50.0 50.0 Soybean meal 50.0 50.0 50.0 50.0 Di calcium 30.0 30.0 30.0 30.0 Lime 20.0 20.0 20.0 20.0 Sulphur 2.5 2.5 2.5 2.5 Sea salt 15.0 15.0 15.0 15.0 Premixes 5.0 5.0 5.0 5.0 Chemical composition (g/kg DM basis) Dry matter (DM) 917 918 919 920 Nitrogen (N) 19.1 19.5 19.7 19.8 Neutral Detergent fibre (NDF) 467 600 589 576 Phenolic compounds 11.3 117 97.4 77.7 Condensed tannins (CT) 0.0 9.15 7.92 6.68 Total starch 494 203 203 203 Total sugar 32.9 65.4 98.9 Reducing sugar 16.6 35.1 53.7 Sucrose 16.3 31.0 45.8 Metabolizable energy (MJ/kg DM) 9.16 9.18 9.19 9.20 Ingredients Premixes contained (g/kg DM basis): vitamin A 40,000,000 units, vitamin D3 4,000,000 units, vitamin E 40,000 Unit, vitamin B12 0.02 g, Mn 160 g, Fe 240 g, Zn 100 g, Cu 20 g, Se 0.5 g, Co 2 g and I 5 g. 138 Buffalo Bulletin (March 2015) Vol.34 No.1 Table 4. Intakes and the coefficients of digestion, nitrogen balance, nitrogen utilization and daily urinary purine derivative excretion, the ratios of purine derivatives to digestible nutrient intakes in Thai swamp buffaloes fed pangola hay as a basal diet and supplemented with different tropical multipurpose trees (TMPTs). Diet supplementation SEM1 UCSM SDLL LLRT SRTP Body weight2 291 290 289 289 7.91 Metabolic body weight (kg) 70.4 70.2 70.1 70.1 0.85 Dry matter (DM) 78.4 78.5 78.8 78.9 1.60 Organic matter (OM) 73.3 72.8 72.7 72.2 1.48 Neutral detergent fibre (NDF) Intakes(g /BW 0.75d-1) 33.6 43.3 42.6 41.8 0.81 ME intakes3 (MJ/ani d-1) 47.1 47.1 47.3 47.3 0.96 CP intakes (g/ani d ) 578 578 581 583 11.8 DM 0.71a4 0.61b 0.62b 0.67a 0.03 OM 0.74 a 0.65 0.66 c 0.70b 0.03 NDF 0.73 b 0.79 a 0.78 a 0.75 b 0.02 Passage rate from rumen (k1% h-1) 3.23 3.58 3.40 3.38 0.04 Passage rate through caecum and colon (k2% h-1) 6.58 7.43 6.55 7.72 0.04 Transit time (TT, h) 1.46 1.47 1.29 1.57 0.17 Total mean retention time (TMRT, h) 50.1 44.1 49.5 45.3 4.70 N intake 1.41 1.41 1.42 1.43 0.03 N in urine 0.22 0.19 0.17 0.16 ab 0.03 N in faeces 0.52b 0.64a 0.65a 0.60ab 0.08 3 -1 The coefficient of digestion c Passage rates Nitrogen balance (g/BW 0.75 d ) -1 N-balance Digestibility of N (g/kg) a a b 0.68 0.58 0.62 0.67 0.08 632a 541b 541b 578a 6.51 594 551 598 488 87.1 PD in urine (μmol/BW0.75 d-1) Allantoin Uric acid 214 165 138 160 113 PD 808 716 737 647 123 Total PD/kg DDMI 14.1 13.8 15.3 13.9 3.30 Total PD/kg DOMI 14.5 13.9 15.6 14.4 3.34 Total PD (mol)/digestible nutrients Standard error of mean 2Averaged throughout experiments, Nutrient requirements for domestic buffalo in developing countries, body weight 300 kg maintenance required ME = 37.7 (MJ/d), CP = 377 (g/d) and gain 0.25 kg/d required ME = 49.2 (MJ/d), CP = 579 (g/d) [Kearl, 1982] 4 abcValues within the same column with different superscripts are significantly (P<0.05) different. Values within the same column without different superscripts are not significantly (P<0.05) different. 1 139 Buffalo Bulletin (March 2015) Vol.34 No.1 Table 5. Solid digesta flow kinetics in the gastrointestinal tract and plasma metabolite concentration of Thai swamp buffaloes fed pangola hay as a basal diet and supplemented with different different tropical multipurpose trees (TMPTs). Body weight2 Metabolic body weight (kg) In plasma Urea-N (mg/dl) Glucose (μmol/ml) Non-esterified fatty acid (μmol/ml) β-hydroxybutyrate (μmol/ml) Insulin (μ IU/ml) Diet supplementation UCSM SDLL LLRT SRTP 291 290 289 289 70.4 70.2 70.1 70.1 23.2b2 50.7b 81.5 306 6.33 23.6b 57.0b 71.9 263 7.38 31.7b 50.0b 65.9 332 7.70 50.2a 60.7a 78.0 334 7.09 SEM1 7.91 0.85 10.8 5.58 19.7 81.0 1.02 Standard error of mean 2Averaged throughout experiments, 3 abcValues within the same column with different superscripts are significantly (P<0.05) different. Values within the same column without different superscripts are not significantly (P<0.05) different. 1 animals must carefully consider when smallholder farmers required to use them. Leucaena, providing a good protein source is possibly more suitable to farmers, in addition to the fact that this plant grows easily and it can be used more than 25% in diet when inoculating bacteria (Synergist joneses). Whilst, the rain tree pod is another good choice, it is only required to be ground by using an electrical grinder, then drying by the Sun, prior to keep for them long times. It is considered to be a superiority product, providing both readily soluble carbohydrate and protein sources but high readily soluble carbohydrate content, it always depresses fibre digestion. Thus, the further study must investigate to find out appropriate proportions of rain tree pods, anti-nutritional factors and toxic substance compounds in rain tree pods, so that they can be used as a feed in buffaloes for enhancing fibre digestion and microbial yields in the rumen. CONCLUSIONS The DM and OM digestions improved in swamp buffaloes when supplemented with cassava meal or rain tree pods, but NDF digestion reduced in animals supplemented with high proportions of cassava meal or high proportions of rain tree pods in diet, even the amount of sugar in SRTP was less than that of starch in UCSM. The NDF digestion increased in animals fed leucaena mixed with rain tree pods. Plasma urea-N and glucose in animals supplemented with SRTP was higher than in animals supplemented with the other supplements. The present study indicated feeding different TMPTs as supplemental diets with high proportions of readily 140 Buffalo Bulletin (March 2015) Vol.34 No.1 soluble carbohydrates, in particularly, cassava meal or rain tree pods for swamp buffaloes depressed fibre digestions, but did not affect to, the rate of passage, N-balance, the rate of PD excretion in the urine and the mobilization of energy reserves. The study demonstrated the use low proportions of TMPTs containing readily soluble carbohydrates (starch or sugar) in combination of supplementary diet was more worthy of improving feeding systems than the use single high proportions of TMPTs containing readily soluble carbohydrates for buffaloes due to each tropical multipurpose trees have its own limitation for using as a feed in particularly when gives it to animals. 17th ed. AOAC, Washington, D.C., Association Official Agriculture Chemists. Chamberlain, D.G., S. Robertson and J. Choung. 1993. Sugars versus starch as supplements to grass silage: effects on ruminal fermentation and the Supply of Microbial Protein to Small Intestine, Estimated from the Urinary Excretion of Purine Derivatives, in Sheep. J. Sci. Food Agr., 63: 189-194. Chen, X.B. and M.J. Gomez. 1995. Estimation of Microbial Protein Supply to Sheep and Cattle Based on Urinary Excretion of Purine Derivatives- An Overview of The Technical Details. Occasional Publication 1992, International Feed Resources Unit, Rowette Research Institute, Aberdeen, UK. Chen, X.B. and E.R. Ørskov. 2003. Research on urinary excretion of purine derivatives in ruminants: past, present and future, p. 180-210. In Makkar, H.P.S. and X.B. Chen (eds.) Estimation of Microbial Protein Supply in Ruminants Using Urinary Purine Derivatives. Kluwer Academic Publishers. Chen, X.B., L. Samaraweera, D.J. Kyle, E.R. Ørskov and H. Abeygunawardene. 1996. 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