产奶牛不同泌乳阶段日粮的饲喂效果分析  

Effect of Dairy Diets Feeding on Different Lactation Stages

作　　者：权俊杰 刘斌[2] 辛亚平[2] 

机构地区：[1]澄城县畜牧兽医局,陕西澄城715200 [2]西北农林科技大学动物科技学院,中国杨凌712100

出　　处：《中国牛业科学》2016年第3期15-17,共3页China Cattle Science

基　　金：陕西省奶牛产业技术体系资助

摘　　要：[目的]探讨产奶牛不同泌乳阶段饲喂不同的日粮,其产奶量和乳成分的变化情况。[方法]对不同泌乳阶段奶牛的日粮组成进行分析,对其产奶量和牛奶品质进行了跟踪记录。[结果]产奶牛高峰期平均产奶量为28.10kg;产奶牛泌乳中期和泌乳后期平均产奶量分别为15.75kg、15.15kg。乳脂率从泌乳高峰期到泌乳后期呈现上升的趋势,泌乳高峰期的乳脂率显著低于泌乳中期(P<0.05)和泌乳后期(P<0.05)。[结论]产奶牛不同泌乳阶段饲喂不同的日粮,其产奶量和乳成分会发生相应变化。【Objective】The aim of this paper was to study the change of milk production and composition of dairy cow by feeding different diets in different lactation stages.【Objective】The diet composition of dairy cows were analyzed in different lactation stages,and the milk production and quality were recorded.【Result】The results showed that the average milk yield of the cow was 28.10 kg in the peak of lactation,and the average milk yield in the middle and late lactation were 15.75 kg and 15.15 kg,respectively.Moreover,it showed a rising trend on milk fat percentage from peak lactation to late lactation,and the milk fat percentage of peak lactation was significantly lower than that of middle lactation（P〈0.05）and late lactation（P〈0.05）.【Conclusion】The milk yield and milk composition of the cow were changed by feeding different diets in different lactation stages.

关 键 词：中国荷斯坦牛 日粮 泌乳量 

分 类 号：S816-32[农业科学—饲料科学]