Vol. 12, Issue 2 (2023)

Author(s):
Harender Singh, Garima Kansal and Hitesh

Abstract:
The present study aimed to investigate whether increasing estradiol (E₂) concentrations during preovulatory period would increase the estrus expression and conception rate in 5d CIDR based timed AI (TAI) protocol. A total of 80 anestrus buffalo (3^rd to 5^th parity) were allocated (40 for each group) to either 5d CIDR-Cosynch or 5d CIDR-Heatsynch group. Pregnancy was confirmed on day 35. The buffalo in 5d CIDR-Heatsynch had greater estrus induction rate and increasing trend for conception rate (55% vs. 40%) than 5d CIDR-Cosynch. The pregnant buffalo that exhibited estrus signs was greater in 5d CIDR-Heatsynch than 5d CIDR-Cosynch. In conclusion, 5d CIDR-Heatsynch improved the conception rate in anestrus buffaloes of Palwal district of Haryana.