Effect of supplementing bypass fat on the performance of high yielding crossbred cows

摘要: The study was taken up to assess the effect of strategic supplementation bypass fat (BPF) on performance high yielding crossbred cows. Crossbred cows (15) in early lactation, producing more than 10 kg milk/d were used. Based body weight, milk yield, stage lactation and parity, animals divided into 2 equal groups. control group (C) offered ad lib. homemade concentrate mixture non-leguminous green fodder for 180 days. experimental diet, supplemented daily with 150– 200g BPF i.e. calcium salts rice bran fatty acid oil. did not have any significant impact blood profile except an increase triglyceride (TG) level. plasma progesterone concentration higher day 15 observed oestrus cycle (7.50 vs 6.15 ng/dl) as well at 30 days pregnancy (9.18 vs. 6.93 compared group. Concentration urea nitrogen (BUN), TG phosphorus declined, while that albumin increased advancement lactation. average yield improved by 1.13 kg/d (21.55 20.42 kg/d) protein, lactose SNF content milk, without effecting these parameters. Supplementation showed no (MUN), but it declined weight considerably (551 508 kg) group, affected It concluded 150–200 g fat/d its composition health