The study was conducted at livestock farm, Adhartal, College of Veterinary Science & A.H., NDVSU, Jabalpur (M.P.). Twelve advance pregnant Murrah buffaloes were selected 21 days pre-partum and divided in two groups of six each; CON as control without supplementation and SBO as soybean oil supplementation @ 200 ml/animal/day upto 90 days post-partum to study the effect on reproductive performances in lactating Murrah buffaloes. The results revealed non-significant improvement in average birth weight of calves by 9.77%, first post-partum estrus by 15 days, service period by 28 days, first service conception rate by 33.33% and time for expulsion of foetal membranes by 1.63 hrs. in SBO as compared to CON. No positive cases of dystocia were observed throughout the study however, both the groups shared equal incidences (16.66%) of retention of foetal membranes. In conclusion, the overall reproductive performances were found better in SBO as compared to CON.
Key words: Murrah, Soybean Oil, Estrus, Service Period, Conception Rate, Foetal Membranes