摘要
本试验旨在研究酶制剂对泌乳奶牛生产性能和乳房炎发病率的影响。选取162头荷斯坦泌乳牛,随机分为试验组和对照组,每组81头。试验组奶牛在TMR中添加20g/(头·d)复合酶制剂,对照组不添加,试验期为49d。结果表明,饲粮中添加20g/(头·d)的复合酶制剂可提高产奶量、乳脂率、乳蛋白率和乳总固形物含量(P>0.05)。
This experiment was conducted to investigate the effects of enzyme products on performance of dairy cows. A total of 162 lactating Holstein dairy cows were randomly allocated into two groups with 81 cows per group. There lasted for 49 d. TMR of cows in two groups were supplemented with 0（control group） and 20 g/d·cow（trail group）, respectively. The results showed that adding 20 g/d.cow enzyme products, the milk yield, milk fat rate and milk protein rate of cows were increased（P〉0.05）.
出处
《中国奶牛》
2015年第1期56-58,共3页
China Dairy Cattle
关键词
复合酶制剂
产奶量
乳成分
治疗次数
奶牛
Enzyme products
Milk yield
Milk contents
Treat time
Dairy cows
