奶牛复合酶制剂对泌乳奶牛生产性能和经济效益的影响

Effects of enzyme products on milk performance and economic benefit of lactation dairy cows

试验旨在研究酶制剂对泌乳奶牛生产性能和疾病的影响。选取148头泌乳荷斯坦奶牛,随机分为2组,每组74头。2组奶牛在TMR日粮基础上分别添加0、20 g/(头·d)复合酶制剂,试验期45 d。结果表明:1饲粮中添加20 g/(头·d)的复合酶制剂提高了产奶量、乳脂率、乳糖、非脂固形物含量(P>0.05)。2饲粮中添加20 g/(头·d)的复合酶制剂降低了奶牛因病治疗次数。3在本试验条件下,使用复合酶制剂可以增加经济效益。由此可见,在泌乳牛饲粮中添加20 g/(头·d)的复合酶制剂能改善产奶量,降低患疾病的风险,增加经济效益。

This experiment was conducted to investigate the effects of enzyme products on performanceand disease of lactating dairy cows. 148 lactating Holstein dairy cows were randomly allocated into twogroups with 74 cows per group. They lasted for 45 d. TMR of cows in two groups were supplementedwith 0（control group）, 20 g/d·cow（trial group）, respectively. The results showed as follows：① adding20 g/d·cow enzyme products, milk yield, milk fat, milk lactose and milk solid of non-fat（SNF） were in-creased（P〉0.05）. ② adding 20 g/d·cow enzyme products, treated times were decreased due to disease.3 It is concluded that enzyme products supplemented into the diet has effect on improving the milkyield, reducing risk of mastitis, increasing the economic benefit.