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Online Journal of Veterinary Research©
Volume 23 (10):1027-1031, 2019.
Effect of route of administration and dose of progesterone on bovine estrus.
Shukla MK1 and Garg A2.
1Department of Animal Reproduction, Gynaecology and Obstetrics, College of Veterinary Science and Animal Husbandry, 2Sardar Krushinagar Dantiwada Agricultural University, Sardar Gujarat, India.
Shukla MK, Garg A, Effect of route of administration and dose of progesterone on bovine estrus, Onl J Vet Res., 23 (10):1027-1031, 2019. Forty lactating Murrah buffaloes with a history of normal calving 4-6 months earlier and not reported in estrus since then were used. Groups of 10 buffaloes each were administered 25 mg progesterone intra muscular (IM) or 10mg intra uterine (IUT) or vulvar (IVU) routes. Controls were injected 2ml distilled water IM. Buffalo were observed for estrus and those confirmed were bred with bulls at 72 and 96 hours after a 2nd injection of progesterone. We detected heat in 8 buffalo given the drug IM, 7 IUT and 8 IVU ( P > 0.05 ) but only in 2 controls (P < 0.05). Time to estrus was determined and pregnancy confirmed rectally at 60 days. We detected estrus 53 to 69h in all groups (P > 0.05) but only 3 to 4 treated buffalo conceived (P > 0.05) and none of the controls (P < 0.05)
Key words: Dinoprost, Prostaglandin, Murrah buffalo, subestrus, Estrus synchronization