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Home▶ Journals▶ Indian Journal of Veterinary Sciences and Biotechnology▶Archive▶Vol. 22 No. 1 (2026)▶Progesterone Levels and Estrus Symptoms in Modified…
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Progesterone Levels and Estrus Symptoms in Modified  Ovsynch Protocols in Khillar Cows

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Mayank Diwakar Barde — Department of Animal Reproduction, Gynecology & Obstetrics, College of Veterinary & Animal Sciences, Akola-444104, Maharashtra Animal & Fishery Sciences University (MAFSU), Maharashtra, India
Maheshkumar Vitthalarao Ingawale — Department of Animal Reproduction, Gynecology & Obstetrics, College of Veterinary & Animal Sciences, Akola-444104, Maharashtra Animal & Fishery Sciences University (MAFSU), Maharashtra, India
Shyam Ganesh Deshmukh — Department of Animal Reproduction, Gynecology & Obstetrics, College of Veterinary & Animal Sciences, Akola-444104, Maharashtra Animal & Fishery Sciences University (MAFSU), Maharashtra, India
Chaitanya Hemednrakumar Pawshe — Department of Animal Reproduction, Gynecology & Obstetrics, College of Veterinary & Animal Sciences, Akola-444104, Maharashtra Animal & Fishery Sciences University (MAFSU), Maharashtra, India
Ranjit Suresh Ingole — Departments of Veterinary Pathology, College of Veterinary & Animal Sciences, Akola-444104, MAFSU, Nagpur, Maharashtra, India
Sudhakar Prahlad Awandkar — Departments of Veterinary Microbiology, College of Veterinary & Animal Sciences, Akola-444104, MAFSU, Maharashtra, India
Published 10 Jan 2026 Vol. 22 No. 1 (2026), pp. 200-203 ● Open access
❝ How to cite 🔗 https://doi.org/10.48165/ijvsbt.22.1.41
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Abstract

The progesterone levels and estrus signs were studied in Ovsynch, double PG Ovsynch and increasing dose of PG in Ovsynch  synchronization protocols in multiparous lactating Khillar cows (6 each) under field conditions. The tumefaction of vulval lips and  cervical mucus discharge were most prominent estrus behaviour signs exhibited by 88 % cows in all the three groups. The mean serum  progesterone levels on the day of estrus were 0.95 ± 0.77, 0.82 ± 0.04 and 0.90 ± 0.03 ng/mL in Ovsynch, double PG Ovsynch and  increasing dose of PG in Ovsynch protocols, respectively, which did not differ statistically. The pregnancy rate observed was also non significantly higher in double PG Ovsynch synchronized cows than other two groups (50% vs 33.33%). The serum progesterone during  estrus in double PG Ovsynch synchronization protocol was lower indicating better estrus quality with recorded higher pregnancy rate  than Ovsynch and increasing dose PG protocol. 

 

KeywordsEstrus, Khillar, Ovsynch, Progesterone, Synchronization

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