摘要
Abstract
[Objective]To explore the effect of grape seed extract on lactation performance and milk quality of perinatal dairy cows.[Method]In this experiment,60 perinatal Holstein cows with healthy body,similar parity,similar lactation cycle and expected date of delivery were divided into 4 groups of 15 cows each,and 3 replicates of 5 cows each were set up in each group.0％,0.1％,0.2％and 0.3％grape seed extract were added to the basic diet in the control group,experimental group Ⅰ,group Ⅱ and group Ⅲ respectively.On the 42nd day of the formal experiment,the average daily milk production,average daily feed intake,feed-milk ratio,milk fat rate,milk protein rate,lactose rate and somatic cell count of Holstein cows in each group were statistically analyzed.[Result]Compared with the control group,the average daily feed intake and average daily milk production of the experimental groups Ⅰ,Ⅱ and Ⅲ were significantly increased,and the differences were significant(P<0.05).The feed-to-milk ratio of groups Ⅰ,Ⅱ and Ⅲ decreased significantly,and the differences were significant(P<0.05).The milk fat rate,milk protein rate and lactose rate in groups Ⅰ,Ⅱ and Ⅲ increased significantly,and the differences were significant(P<0.05).The somatic cell counts in the milk of groups Ⅰ,Ⅱ and Ⅲ were significantly reduced and the differences were significant(P<0.05).[Conclusion]Grape seed extract can significantly improve the lactation performance and milk quality of perinatal dairy cows.Adding 0.3％grape seed extract to the basic diet has the best effect.关键词
葡萄籽提取物/围产期奶牛/泌乳性能/乳品质Key words
grape seed extract/perinatal cows/lactation performance/milk quality
