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Singh H, Pandey AK, Kumar S, Saini G, Duggal R, Bangar YC, Kumar S, Saini R, Kumar H. 5d CIDR-Heatsynch improves the circulatory estradiol levels, estrus expression and conception rate in anestrus buffalo ( Bubalus bubalis). Anim Biotechnol 2023; 34:4488-4499. [PMID: 36576041 DOI: 10.1080/10495398.2022.2158337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The present study aimed to investigate whether increasing estradiol (E2) during preovulatory period would increase estrous expression, luteal profiles and conception rate in 5d CIDR based timed AI protocol. A total 156 anestrus buffalo allocated (78 per group) to either 5d CIDR-Cosynch (d-5: CIDR + GnRH; d0: PGF2α+CIDR removal; 72 h post-CIDR removal: GnRH) or 5d CIDR-Heatsynch (d-5: CIDR + GnRH; d0: PGF2α+CIDR removal; 24 h post-CIDR removal: estradiol benzoate) group. All the buffaloes inseminated at 72 and 84 h post-CIDR removal. A subset of buffalo (n = 58) were subjected to examination of the follicle diameter and luteal profile during protocol, post-AI on days 5 and 12. The buffalo in 5d CIDR-Heatsynch had greater (p < .05) E2 concentrations, estrus induction and increasing trend (p < .08) for conception rate (57.7% vs. 43.6%) than 5d CIDR-Cosynch. The percentage of pregnant buffalo that exhibited estrus signs was greater (p < .01) in 5d CIDR-Heatsynch than 5d CIDR-Cosynch. Positive correlation (p < .01) was observed between POF and E2 concentrations; POF and CL diameter, CL diameter and P4 concentrations. Estrus response and P4 concentrations were indicators of probability of pregnancy. In conclusion, 5d CIDR-Heatsynch tended to improve conception rate. The estrus expression and P4 concentrations (d5 and 12 post-first-AI) is the indicator of probability of pregnancy in buffalo.
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Affiliation(s)
- Harender Singh
- Department of Veterinary Gynaecology and Obstetrics, College of Veterinary Sciences, LUVAS, Hisar, India
| | - Anand Kumar Pandey
- Department of Veterinary Gynaecology and Obstetrics, College of Veterinary Sciences, LUVAS, Hisar, India
| | - Sandeep Kumar
- Department of Veterinary Gynaecology and Obstetrics, College of Veterinary Sciences, LUVAS, Hisar, India
| | - Gitesh Saini
- Department of Veterinary Gynaecology and Obstetrics, College of Veterinary Sciences, LUVAS, Hisar, India
| | - Rakesh Duggal
- Department of Animal Husbandry and Dairying, Government Veterinary Hospital, Hisar, India
| | | | - Sandeep Kumar
- Department of Veterinary Physiology and Biochemistry, College of Veterinary Sciences, LUVAS, Hisar, India
| | - Ravinder Saini
- Department of Animal Husbandry and Dairying, Government Veterinary Hospital, Hisar, India
| | - Hitesh Kumar
- Division of Animal Reproduction, ICAR-Indian Veterinary Research Institute, Bareilly, India
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Abulaiti A, Riaz U, Naseer Z, Ahmed Z, Hua G, Yang L. Follicular Dynamics during Estrous Cycle of Pubertal, Mature and Postpartum Crossbred (Nili Ravi × Jianghan) Buffaloes. Animals (Basel) 2022; 12:ani12091208. [PMID: 35565637 PMCID: PMC9105092 DOI: 10.3390/ani12091208] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Revised: 05/02/2022] [Accepted: 05/03/2022] [Indexed: 02/01/2023] Open
Abstract
The follicular dynamics is used as a reliable indicator for reproductive management in livestock. However, the follicular dynamics (follicle wave emergence, estrus cycle length, diameter of dominant follicle, follicular growth and atretic phases) during the estrous cycle of crossbred (Nili Ravi-Jianghan) buffalo is still unexplored. Therefore, the present study aimed to observe the follicular dynamics in estrous cycle of crossbred buffaloes at different physiological stages (pubertal; n = 28, sexual mature; n = 22 and postpartum; n = 18). In the present study, the follicular dynamics were ultrasonically examined at 12 h intervals throughout an estrous cycle during the breeding season. The results indicate that about 86.76% (59/68) crossbred buffaloes, irrespective of physiological stage, exhibited two follicular waves in estrous cycle with an average estrus cycle length was 20.7 ± 0.4 days. The estrus cycle length was significantly shorter (p < 0.05) in pubertal buffaloes (19.4 ± 0.4 days) compared with sexual mature (21.5 ± 0.3 days) and postpartum (21.9 ± 0.4 days) buffaloes. The first follicular wave emerged on same day during one- (pubertal vs. postpartum), two- (pubertal vs. mature vs. postpartum) or three-wave (mature vs. postpartum) estrous cycle buffaloes. The maximum diameter of dominant follicle (DF) in pubertal, sexually mature and postpartum crossbred buffaloes was 9.6 ± 2.0 mm, 10.6 ± 0.5 mm and 12.6 ± 0.7 mm with growth rate of 1.08 ± 0.04 mm/day, 0.92 ± 0.04 mm/day, and 0.9 ± 0.07 mm/day, respectively. In conclusion, similar to other buffalo breeds, Nili Ravi-Jianghan crossbred buffaloes showed the two-wave follicular pattern dominantly with an average duration of ~20 days estrous cycle. The observed follicular dynamics can be used as a reliable indicator for synchronization and fixed-time artificial insemination (FTAI) programs to improve the fertility of crossbred buffaloes.
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Affiliation(s)
- Adili Abulaiti
- Key Laboratory of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China; (A.A.); (U.R.); (Z.A.)
- International Joint Research Center for Animal Genetics, Breeding and Reproduction, Wuhan 430070, China
- Hubei Province’s Engineering Research Center in Buffalo Breeding & Products, Wuhan 430070, China
- Key Laboratory of Smart Farming for Agricultural Animals, Wuhan 430070, China
| | - Umair Riaz
- Key Laboratory of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China; (A.A.); (U.R.); (Z.A.)
- Department of Theriogenology, Faculty of Veterinary and Animal Sciences, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Zahid Naseer
- Theriogenology Section, Department of Clinical Studies, Faculty of Veterinary and Animal Sciences, Pir Mehr Ali Shah Arid Agriculture University, Rawalpindi 46000, Pakistan;
| | - Zulfiqar Ahmed
- Key Laboratory of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China; (A.A.); (U.R.); (Z.A.)
| | - Guohua Hua
- Key Laboratory of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China; (A.A.); (U.R.); (Z.A.)
- International Joint Research Center for Animal Genetics, Breeding and Reproduction, Wuhan 430070, China
- Hubei Province’s Engineering Research Center in Buffalo Breeding & Products, Wuhan 430070, China
- Key Laboratory of Smart Farming for Agricultural Animals, Wuhan 430070, China
- Correspondence: (G.H.); (L.Y.)
| | - Liguo Yang
- Key Laboratory of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China; (A.A.); (U.R.); (Z.A.)
- International Joint Research Center for Animal Genetics, Breeding and Reproduction, Wuhan 430070, China
- Hubei Province’s Engineering Research Center in Buffalo Breeding & Products, Wuhan 430070, China
- Key Laboratory of Smart Farming for Agricultural Animals, Wuhan 430070, China
- Correspondence: (G.H.); (L.Y.)
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SINGH MADHUMEET, SHARMA AKSHAY, KAPSE SUPRIYA, KASHYAP AMIT, KUMAR PRAVESH. Efficacy of different estrus synchronization protocols in repeat breeder cows. THE INDIAN JOURNAL OF ANIMAL SCIENCES 2019. [DOI: 10.56093/ijans.v89i9.93773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The work was conducted in 272 repeat breeder cows diagnosed with functional form of infertility, i.e. luteal insufficiency and ovulatory defects. The objective of present study was to evaluate the efficacy of synchronization protocols in functionally infertile repeat breeder cows. These cows were divided into 4 treatment, viz. Ovsynch, Ov-cosynch, Doublesynch, Heatsynch and one control group. The overall conception rate of Ovsynch treatment protocol was significantly higher than control cows. Similarly, the mean diameter of dominant follicle in cows treated with Ovsynch protocol was significantly higher than cows treated with Doublesynch and Heatsynch protocols. Also, the mean diameter of dominant follicle prior to artificial insemination in the cows treated with Ovsynch protocol was significantly higher in comparison to control cows. In conclusion, Ovsynch protocol fared better in terms of conception in repeat breeder cows.
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Chaudhary NJ, Patel DM, Dhami AJ, Vala KB, Hadiya KK, Patel JA. Effect of Doublesynch and Estradoublesynch protocols on estrus induction, conception rate, plasma progesterone, protein, and cholesterol profile in anestrus Gir heifers. Vet World 2018; 11:542-548. [PMID: 29805223 PMCID: PMC5960797 DOI: 10.14202/vetworld.2018.542-548] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Accepted: 03/31/2018] [Indexed: 11/20/2022] Open
Abstract
Aim This study aimed to evaluate the efficacy of Doublesynch and Estradoublesynch protocols on estrus induction, conception rates, plasma progesterone, protein, and cholesterol profile in anestrus Gir heifers. Materials and Methods In this study, 50 pubertal anestrus Gir heifers were selected from the field and farm conditions. The heifers were dewormed (injection ivermectin, 100 mg, s/c) and supplemented with minerals and vitamins (injection organic phosphorus 800 mg and injection Vitamin AD3E and Biotin 10 ml i/m) and multi-mineral bolus at 1 bolus daily for 7 days. The heifers were randomly divided into three groups: Doublesynch (n=20), Estradoublesynch (n=20), and control (n=10). The animals were monitored for estrus response, estrus interval, behavioral signs, and conception rates after induced/first, second, and third cycle post-treatment. Blood samples were obtained on day 0, day 9, day 12, and on day 12 post-artificial insemination (AI) for determination of plasma progesterone, protein, and cholesterol profile. Results The estrus response rate between Doublesynch and Estradoublesynch protocols was similar between treated heifers (85% and 95%). The interval from the second prostaglandin F2α (PGF2α) injection to estrus induction did not differ between the groups (63.87±4.19 vs. 58.27±3.83 h). The conception rates following induced estrus (20% vs. 30%), at the second cycle (23.07% vs. 16.66%), at the third cycle (22.22% vs. 30.00%), and the overall conception rate (45% and 55%) within 27.89±5.75 and 26.45±5.48 days were the same across the treatment groups. The mean plasma progesterone concentrations were significantly (p<0.01) higher on day 9 (second PGF2α injection) and day 12 post-AI compared to day 0 (first PGF2α injection) and the day of fixed-timed artificial insemination. The concentrations were also significantly (p<0.05) higher in conceived than non-conceived heifers on day 9 of treatment and day 12 post-AI in both the protocols. The mean plasma cholesterol concentrations were significantly higher during peak follicular and luteal phases compared to the initial anestrus phase in both the protocols. The values were also higher in non-conceived than conceived animals in both the protocols. The plasma protein profile was not influenced by the sampling days or conceived and non-conceived status. Conclusion The results showed that both Doublesynch and Estradoublesynch protocols resulted in similar estrus induction and conception rates with modulation of plasma progesterone and cholesterol profile in anestrus Gir heifers.
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Affiliation(s)
- N J Chaudhary
- Department of Animal Reproduction, Gynaecology and Obstetrics, College of Veterinary Science and Animal Husbandry, Anand Agricultural University, Anand - 388 001, Gujarat, India
| | - D M Patel
- Department of Animal Reproduction, Gynaecology and Obstetrics, College of Veterinary Science and Animal Husbandry, Anand Agricultural University, Anand - 388 001, Gujarat, India
| | - A J Dhami
- Department of Animal Reproduction, Gynaecology and Obstetrics, College of Veterinary Science and Animal Husbandry, Anand Agricultural University, Anand - 388 001, Gujarat, India
| | - K B Vala
- Department of Animal Reproduction, Gynaecology and Obstetrics, College of Veterinary Science and Animal Husbandry, Junagadh Agricultural University, Junagadh - 362 001, Gujarat, India
| | - K K Hadiya
- Department of Animal Reproduction, Gynaecology and Obstetrics, College of Veterinary Science and Animal Husbandry, Anand Agricultural University, Anand - 388 001, Gujarat, India
| | - J A Patel
- Department of Animal Reproduction, Gynaecology and Obstetrics, College of Veterinary Science and Animal Husbandry, Anand Agricultural University, Anand - 388 001, Gujarat, India
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Mohammed K. Application of advanced reproductive biotechnologies for buffalo improvement with focusing on Egyptian buffaloes. ASIAN PACIFIC JOURNAL OF REPRODUCTION 2018. [DOI: 10.4103/2305-0500.241177] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Pandey AK, Ghuman SPS, Dhaliwal GS, Honparkhe M, Phogat JB, Kumar S. Effects of preovulatory follicle size on estradiol concentrations, corpus luteum diameter, progesterone concentrations and subsequent pregnancy rate in buffalo cows (Bubalus bubalis). Theriogenology 2017; 107:57-62. [PMID: 29128702 DOI: 10.1016/j.theriogenology.2017.10.048] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2017] [Revised: 10/25/2017] [Accepted: 10/30/2017] [Indexed: 11/19/2022]
Abstract
The present study was undertaken to investigate the effects of preovulatory follicle (POF) size on estradiol concentrations, luteal profile (CL diameter and progesterone concentration) and subsequent pregnancy rate in Murrah buffalo cows. The buffalo cows (n = 49) were synchronized for estrus by two doses of PGF2α given 11 days apart. The buffalo cows were inseminated during standing estrus and again after 24 h. Ovaries were scanned at estrus and 24 h intervals until ovulation, thereafter on days 5, 12 and 16 post-ovulation to examine the POF and CL diameter. Size of POF at estrus was divided into three categories; I: 10 to ≤12; II: >12.0 to ≤14.0; III: >14.0-16.0 mm. Blood samples were collected for estradiol (on day of estrus) and progesterone concentration (on days 5, 12 and 16). The estradiol concentrations were greater (P < 0.05) in category II than category I with the greatest (P < 0.05) concentrations estimated in category III. A positive correlation (P < 0.05) between POF and progesterone concentration, CL diameter and progesterone concentration was observed on all sampling day. Pregnant buffalo cows exhibited greater (P < 0.05) plasma progesterone as compared with their non-pregnant counterpart. Greater pregnancy rates were observed with an increased size of POF (χ2 = 2.9, P > 0.05). It was concluded that the POFs having diameters between 12 and 16 mm are mature enough to be transformed into CL of such optimum diameter and can secrete optimum progesterone concentrations that can sustain the pregnancy in Murrah buffalo cows.
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Affiliation(s)
- A K Pandey
- Department of Veterinary Gynaecology and Obstetrics, COVS, GADVASU, Ludhiana 141004, Punjab, India.
| | - S P S Ghuman
- Department of Veterinary Gynaecology and Obstetrics, COVS, GADVASU, Ludhiana 141004, Punjab, India
| | - G S Dhaliwal
- Department of Veterinary Animal Husbandry and Extension Education, COVS, GADVASU, Ludhiana 141004, Punjab, India
| | - M Honparkhe
- Department of Veterinary Gynaecology and Obstetrics, COVS, GADVASU, Ludhiana 141004, Punjab, India
| | - J B Phogat
- Department of Veterinary Gynaecology and Obstetrics, COVS, LUVAS, Hisar 125004, Haryana, India
| | - S Kumar
- Department of Veterinary Gynaecology and Obstetrics, COVS, LUVAS, Hisar 125004, Haryana, India
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Karuppanasamy K, Sharma RK, Phulia SK, Jerome A, Kavya KM, Ghuman SPS, Kumar H, Singh I, Krishnaswamy N. Ovulatory and fertility response using modified Heatsynch and Ovsynch protocols in the anovular Murrah buffalo (Bubalus bubalis). Theriogenology 2017; 95:83-88. [PMID: 28460685 DOI: 10.1016/j.theriogenology.2017.02.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 02/25/2017] [Accepted: 02/27/2017] [Indexed: 11/25/2022]
Abstract
We studied the effect of modified Heatsynch and Ovsynch protocols on the ovulatory response (OR), estrus induction rate (EIR) and conception rate (CR) in the anovular postpartum Murrah buffalo (n = 35). In the modified Heatsynch protocol (Group I; n = 12), buffaloes were given two GnRH at 2 h interval on treatment day 0, PGF (PGF2α) on day 7 and estradiol (E2) 1 mg on day 8. Two FTAI were done at 20 h intervals after E2 administration. In the modified Ovsynch protocol (Group II; n = 15), GnRH was given on day 0, 7 and 16 with a PGF on day 14. Two FTAI were done; one at last GnRH and the other 20 h later. Group III served as untreated negative control (n = 8). During the treatment, ovarian changes were monitored by transrectal ultrasonography and plasma progesterone (P4) and E2. Administration of two GnRH at 2 h interval neither increased the OR nor strengthened the subsequent P4 priming. Interestingly, in group I, none of the buffalo ovulated to E2 though the EIR was 100% indicating the occurrence of behavioral, but not ovulatory estrus. Administration of GnRH 7 day prior to the commencement of Ovsynch protocol (Group II) did not improve the CR (21.4%), though the OR was 71.4%. No significant difference was found in the diameter of largest follicle between the ovulated and non-ovulated buffalo in response to GnRH suggesting that follicle of ≥9.5 mm is necessary but not sufficient to induce ovulation in the anovular buffalo. In both the protocols, the plasma P4 was higher on day 7 in those buffaloes that ovulated to GnRH. Buffaloes treated with modified Ovsynch regimens were 5.27 times more likely to become pregnant than modified Heatsynch protocol. It is concluded that modified Ovsynch protocol is superior to modified Heatsynch protocol in terms of OR and CR.
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Affiliation(s)
- K Karuppanasamy
- Division of Animal Reproduction, ICAR-Indian Veterinary Research Institute, Bareilly, Uttar Pradesh 243122, India
| | - R K Sharma
- ICAR-Central Institute for Research on Buffaloes, Hisar, Haryana 125001, India
| | - S K Phulia
- ICAR-Central Institute for Research on Buffaloes, Hisar, Haryana 125001, India
| | - A Jerome
- ICAR-Central Institute for Research on Buffaloes, Hisar, Haryana 125001, India.
| | - K M Kavya
- Division of Animal Reproduction, ICAR-Indian Veterinary Research Institute, Bareilly, Uttar Pradesh 243122, India
| | - S P S Ghuman
- College of Veterinary Science, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, Punjab 141004, India
| | - H Kumar
- Division of Animal Reproduction, ICAR-Indian Veterinary Research Institute, Bareilly, Uttar Pradesh 243122, India
| | - I Singh
- ICAR-Central Institute for Research on Buffaloes, Hisar, Haryana 125001, India
| | - N Krishnaswamy
- Division of Animal Reproduction, ICAR-Indian Veterinary Research Institute, Bareilly, Uttar Pradesh 243122, India
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Giufrida WM, Cabral VF, Cardoso-Filho L, dos Santos Conti D, de Campos VE, da Rocha SR. Medroxyprogesterone-encapsulated poly(3-hydroxybutirate-co-3-hydroxyvalerate) nanoparticles using supercritical fluid extraction of emulsions. J Supercrit Fluids 2016. [DOI: 10.1016/j.supflu.2016.07.026] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Singh I, Balhara A. New approaches in buffalo artificial insemination programs with special reference to India. Theriogenology 2016; 86:194-9. [DOI: 10.1016/j.theriogenology.2016.04.031] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 01/31/2016] [Accepted: 03/14/2016] [Indexed: 11/29/2022]
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Roy AK, Singh M, Kumar P, Kumar BSB. Effect of extended photoperiod during winter on growth and onset of puberty in Murrah buffalo heifers. Vet World 2016; 9:216-21. [PMID: 27051212 PMCID: PMC4819376 DOI: 10.14202/vetworld.2016.216-221] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Revised: 01/08/2016] [Accepted: 01/16/2016] [Indexed: 11/16/2022] Open
Abstract
Aim: To investigate the effect of extended photoperiod on growth rate, hormonal levels, and puberty in Murrah heifers. Materials and Methods: About 14 Murrah buffalo heifers were divided into normal day photoperiod (NDP; n=7) and extended NDP (ENDP; n=7) groups. The ENDP group was exposed to 4 h of extended photoperiod with artificial light (160 lux) after sunset for 3 months during winter. Results: Group, age and group-by-age interaction effects on plasma glucose concentrations were non-significant (p>0.05). A significant effect of age on non-esterified fatty acids (p<0.05), cholesterol (p<0.01), and triglycerides (p<0.05) concentrations was observed. Group and group-by-age interaction effects on plasma T3, T4, leptin, 17 β estradiol, prolactin and melatonin concentrations were non-significant (p>0.05) while significant (p<0.05) age effect on T4, leptin and melatonin concentrations was observed. With respect to the circadian pattern of melatonin and prolactin, the group, time and group-by-time interaction effects were non-significant (p>0.05). Average daily gain and dry matter intake of heifers were non-significant between the NDP and ENDP groups but were comparatively higher in ENDP group. By the end of the experiment, 6 out of 7 heifers attained puberty in ENDP group in comparison to 4 out of 7 in NDP group. Conclusion: Extending the photoperiod by artificial light for 4 h during winter season resulted in better growth rate and early onset of puberty in Murrah buffalo heifers.
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Affiliation(s)
- Ashwani Kumar Roy
- Division of Dairy Cattle Physiology, National Dairy Research Institute, Karnal, Haryana, India
| | - Mahendra Singh
- Division of Dairy Cattle Physiology, National Dairy Research Institute, Karnal, Haryana, India
| | - Parveen Kumar
- Division of Dairy Cattle Physiology, National Dairy Research Institute, Karnal, Haryana, India
| | - B S Bharath Kumar
- Division of Dairy Cattle Physiology, National Dairy Research Institute, Karnal, Haryana, India
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