Comparison of ovsynch protocol with the additional GnRH administration during early and mid-luteal phase of ovsynch Protocol in crossbred cows

Abstract

Background: The study was designed to compare ovsynch protocol with the additional GnRH administration during early and mid-Luteal phase of Ovsynch protocol with fixed time AI in crossbred cows. Methods: Thirty crossbred cows were allocated into three groups, Group I with an ovsynch protocol: Group II with an additional GnRH on day 6 after 2nd GnRH of Ovsynch and Group III with an additional GnRH on day 12 after 2nd GnRH of Ovsynch. The average number of services required per conception for Group I, Group II and Group III was found 2.40, 2.00 and 2.20 respectively and the conception rate was 50.0, 60.0 and 50.00 respectively. Result: The present study concluded that significantly (p