摘要
[目的]为了探索不同剂量过瘤胃氯化胆碱对围产期奶牛产奶量、奶品质和血液生化指标的影响,以及作用机制。[方法]采用40头荷斯坦牛为试验对象,随机分为对照组、试验A组、试验B组和试验C组,其中对照组饲喂正常日粮,试验A组、B组和C组分别在日粮基础上添加10 g/头·d,20 g/头·d和30 g/头·d的过瘤胃氯化胆碱,检测其产奶量、奶品质、血糖、总胆固醇、甘油三酯和β-羟基丁酸变化。[结果]过瘤胃氯化胆碱能有效提高产奶量,增加奶中乳脂肪和乳糖含量,促进血糖恢复,降低总胆固醇和β-羟基丁酸,改善奶牛生产性能。[结论]日粮添加20 g/头·d过瘤胃氯化胆碱,改善奶牛生产性能、血液生化指标。
[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 andβ-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 andβ-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.
作者
王西耀
韩增霞
林清香
WANG Xiyao;HAN Zengxia;LIN Qingxiang(Yinan County Animal Disease Prevention and Control Centre,Linyi Shandong 276300;Bureau of Agriculture and Rural Development,Yinan County,Linyi Shandong 276300)
出处
《中国乳业》
2024年第6期25-30,共6页
China Dairy
关键词
氯化胆碱
奶牛
产奶量
乳脂肪
choline chloride
cow
milk yield
milk fat
