Vol. 9, Issue 4 (2020)

Author(s):
Trilok Gocher, Madan Mohan Meena, GN Purohit, and Sasi G

Abstract:
Repeat breeding is an important factor affecting economic success in dairy management. A repeat-breeder is defined as a clinically normal cow which, other factors being optimal, shows a reduced probability of conception. Both fertilization failure and embryonic loss are major causes of repeat-breeding. Hormonal therapies with good nutritional status have good therapeutic value to enhance the conception rate in repeat breeder cows. The present study was conducted in commercial dairy farm near Bikaner to investigate the effect of feeding Omega-3 fatty acids and vitamin A, D3, E supplement on reproductive efficacy using Ovsynch protocol in repeat breeder cows. A total of 18 cows with the history of 3 or more inseminations, were selected for this study and divided in two groups. Control group (n=9) was treated with standard Ovsynch protocol and treatment group (n=9) with Ovsynch protocol supplemented with Omega-3 fatty acids and vitamin A, D3, E supplement (ReproMIN^TM) for 20 days. All the cows were subjected to FTAI at 12-16 hours post second GnRH administration. Cows not returning to estrus were confirmed for pregnancy by rectal palpation on day 45^th post-AI. The conception rate was 33.33% (3/9) and 55.55% (5/9) in control and treatment group respectively. From the study, it is concluded that feeding of Omega-3 fatty acids and vitamin A, D3, E supplement during Ovsynch protocol is resulted in higher rate of conception.