Applied Biological Research

  • Year: 2014
  • Volume: 16
  • Issue: 2

Effect of human chorionic gonadotropin on post-ovulatory mid-luteal profile and subsequent pregnancy rate in anestrus buffalo using two synchronization regimes

Department of Veterinary Gynaecology and Obstetrics, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana -141 004, Punjab (India)

1Department of Teaching Veterinary Clinical Complex, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana -141 004, Punjab (India)

Abstract

The present study was aimed to assess the impact of post-insemination human chorionic gonadotropin (hCG) administration on mid-luteal functions and conception rate in Murrah buffalo. The study was conducted on 2 buffalo treatment groups viz., estradiol + controlled internal drug releaser (CIDR) + gonadotropin releasing hormone (GnRH, n = 27) and ovsynch + CIDR (n = 22). Half of the animals in each group received intramuscular (i.m.) hCG (3000 IU, i.m.) on day 12 post-ovulation while groups served as control. The CG administration on day 12 post-ovulation improved corpus luteum size and progesterone level as well as first service conception rate after timed insemination in buffaloes.

Keywords

Anestrus buffalo, conception rate, corpus luteum, endocrine profile, estrus synchronization, hCG