Effect of feeding bypass fat on production, reproduction, feed and economic efficiency of dairy cows

The dairy cows experience negative energy balance during early lactation and feeding Bypass fat in ration can produce higher milk yield, improved reproduction with better economics. An experiment was planned to evaluate of total mixed (TMR) supplemented @ 100 g/day animals for -21 120 days calving. Total sixteen were divided control group having eight each. effect on production, economics evaluated 21 biweekly periods 300 lactation. mix 100g/day (98%; calving) resulted daily 1.19 kg (p=0.050) residual whole milk, 1.21 (p=0.048) 4% FCM yield whereas improvement corrected milking (25 days) numerical period 1-21 bi-week period. intake dry matter nutrient non-significant between the groups. feed conversion ratio (kg/kg milk) terms (1.581±0.11 vs. 2.330±0.39; p=0.048) digestible nutrients (0.846±0.06 1.300±0.21 kg; p=0.046), Artificial insemination (AI)/conception (1.857±0.14 2.286±0.18; p=0.008) service (113.13±20.73 177.38±20.92 days; p=0.014) cost income (1:1.93 1:1.63) lactating standard lower loss body condition score bypass after calving cows.