Effect of supplementation of bypass fat during pre and post parturient period on lactation in crossbred cows

The present study was undertaken to evaluate the influence of supplementation of bypass fat during pre and post parturient period on lactation performance in crossbred cows. Twelve crossbreed lactating HF cows were divided into two equal groups viz., Group T₀ (Control) and T₁ (treatment) Group T₀ received roughages and concentrate mixture prepared as per the practice of farm and group T₁ received same ration as per group T₀ and supplemented with bypass fat @ 30g/100 kg BW. The average DMI (kg) of cows from both the group was comparable during pre-partum and post-partum period. The average daily milk production, 4% FCM yield, TDN and DCP intake, milk fat and total solid percentage and specific gravity were significantly (P<0.01) higher for cows from treatment group than control. The feed efficiency in terms of DM, TDN and DCP required per kg FCM produced was significantly (P<0.01) better for cows from treatment group than control. The digestibility coefficient for all the nutrients and content of TDN and DCP were higher for group T_1.. During pre-partum period, average BCS for control and treatment group was comparable, while during postpartum phase it was significantly (P<0.05) higher for treatment group (3.27) than for control (3.10).