ENHANCEMENT OF CONCEPTION RATE BY GNRH WITH TAI IN REPEAT BREEDER COWS UNDER FIELD CONDITIONS

Authors

  • K MURUGAVEL Department of Veterinary Gynaecology and Obstetrics, Rajiv Gandhi Institute of Veterinary Education and Research, Kurumbapet, Puducherry-605 009
  • H HEMALATHA
  • S KANTHARAJ
  • D ANTOINE

Keywords:

Repeat breeder cows, GnRH, serum progesterone, conception rate

Abstract

Thirty three repeat breeder dairy cows maintained under field conditions and were inseminated at spontaneous
estrus were utilized for the study. Cows in treatment group (n=16) were administered with 2.5 ml of injection
Gonadotropin Releasing Hormone (GnRH) on the day of AI. Cows in control group (n=17) served as a control without
any treatment. Blood samples were collected from all the cows on the day of AI and day 6 post-AI for serum progesterone
estimation. Pregnancy diagnosis was done on 45th day post-AI. There is no significant difference in the serum
progesterone concentration between the two groups on the day of AI but there was significant difference on day 6
post-AI. The overall conception rate obtained in control and treatment groups were 29.41 % and 43.75 % respectively.

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Published

2022-12-31

Issue

Vol. 41 No. 1 (2020): Indian Journal of Animal Reproduction

Section

Research Article

How to Cite

MURUGAVEL, K., HEMALATHA, H., KANTHARAJ, S., & ANTOINE, D. (2022). ENHANCEMENT OF CONCEPTION RATE BY GNRH WITH TAI IN REPEAT BREEDER COWS UNDER FIELD CONDITIONS. The Indian Journal of Animal Reproduction, 41(1), 21–22. Retrieved from https://acspublisher.com/journals/index.php/ijar/article/view/3912