摘要
Abstract
[Objective]In order to explore the effects of different doses of per rumen choline chloride on milk yield,milk quality and blood biochemical indexes of periparturient cows,as well as the mechanism of action.[Method]Forty Holstein cows were randomly divided into control group,test group A,test group B and test group C.The control group was fed with normal diet,and test groups A,B and C were supplemented with 10 g/head-d,20 g/head-d and 30 g/head-d of per rumen choline chloride on top of their diets,and milk yield,milk quality,blood glucose,total cholesterol,triglyceride and β-hydroxybutyric acid changes were detected.β-hydroxybutyric changes.[Result]Choline per rumen chloride was effective in increasing milk yield,milk fat and lactose content,promoting blood glucose recovery,lowering total cholesterol and β-hydroxybutyric acid,and improving the production performance of dairy cows.[Conclusion]The addition of 20 g/head-d per-rumen choline chloride to the diet improved the performance and blood biochemical indexes of dairy cows.关键词
氯化胆碱/奶牛/产奶量/乳脂肪Key words
choline chloride/cow/milk yield/milk fat
