奶牛复合酶制剂FE907对泌乳早期奶牛生产性能和经济效益的影响

目的:研究酶制剂对泌乳奶牛生产性能和疾病的影响。方法:选取28头泌乳荷斯坦奶牛,随机分为2组,每组14头。2组奶牛在全混合日粮上分别添加0、20 g/(头·d)复合酶制剂FE907,实验期4周。结果:实验组奶牛日均产乳量提高了1.6 kg/d(P0.05);实验组乳脂率比对照组提高0.08%,乳脂量提高0.09 kg/d,差异显著(P0.05),乳蛋白率提高0.06%,乳蛋白量提高0.07 kg/d,经济效益每天每头奶牛比对照组多盈利6.28元。结论:奶牛日粮中添加20 g/(头·d)的奶牛复合酶制剂FE907,可以提高产乳量,改善乳成分,提高经济效益,同时,可以在一定程度上降低患乳房炎的风险。

Effects of DietAry SupplementAtion of A Composite Enzyme PrepArAtion FE907 on Milk Production And Economic Benefits from DAiry Cows during EArly LActAtion

This experiment was conducted to investigate the effects of composite enzyme preparation FE907 on milk production and disease resistance of lactating dairy cows. A total of 28 lactating Holstein dairy cows were randomly allocated into two groups with 14 ones per group, which were fed a total mixed ration （TMR） alone and supplemented with 20 g/d·cow of FE907, respectively. The feeding experiment lasted four weeks. The results showed that the daily milk production was increased by 1.6 kg/d （P 〉 0.05） in response to dietary supplementation of FE907. In addition, an increase of 0.08% in the fat content of milk and of 0.09 kg/d in the production of milk was observed over the control group with significant differences （P 〈 0.05）. The protein content of milk and the production of milk protein were also increased by 0.06% and 0.07 kg/d, respectively. The benefit per day from one cow was 6.28 RMB more than the control group. It is concluded that supplementing 20 g/d·cow of the enzyme preparation to the diet has a positive effect on improving the milk yield, milk composition and economic benefit while reducing the risk of developing mastitis.