Fertility response in post-partum buffaloes following bypass nutrient supplementation

Abstract

The study was designed to deduce the effect of by-pass nutrient supplementation on follicular profile and fertility response in post-partum buffaloes. For this study, 40 post-partum buffaloes divided into 4 groups [control (10): C, no supplementation; T1 (10), bypass fat supplementation; T2 (10), bypass protein supplementation and T3 (10), bypass fat and protein supplementation] were supplemented with bypass nutrient for 90 days postpartum from day of calving. The study animals were examined at every 10 days interval for assessing the follicular profile and resumption of cyclicity. A number of large and small follicles among the groups remained comparable. However on day 90, number of large follicles was significantly reduced in T1 (0.90±0.18) and T2 (0.70±0.15) in comparison to control group (1.40±0.16) with comparable dominant follicle size among groups. Cyclicity percentage was higher in control (90%) and T2 (80%) as compared to T1 (60%) and T3 (50%), though the difference was nonsignificant. Furthermore, days to first overt estrus, number of AIs/conception and pregnancy rate remained comparable between the groups. In summary, bypass fat and protein supplementation, either alone or in combination showed no effect on follicular profile and fertility in post-partum buffaloes.