影响荷斯坦奶牛305d产奶量的因素分析  

Analysis of Factors Influencing 305-days Milk Yield of Holstein Dairy Cow

作　　者：叶东东[1] 张孔杰[2] 热西提.阿不都热合曼 黄锡霞[1] 张再国[2] 邓江玲[2] 张桂芬[2] 

机构地区：[1]新疆农业大学,乌鲁木齐830052 [2]新疆呼图壁种牛场,新疆呼图壁831203

出　　处：《新疆农业科学》2011年第1期148-152,共5页Xinjiang Agricultural Sciences

基　　金：中国博士后基金项目;农业部公益性行业(农业)科研专项(nyhyzx07-036-10);"十一五"新疆维吾尔自治区重大专项(200731134);"十一五"国家科技支撑计划项目(2006BAD04A11-06)

摘　　要：[目的]探讨各因素对荷斯坦奶牛305d产奶量的影响。[方法]采用SAS8．1软件对影响305d产奶量的因素进行最小二乘方差分析。[结果]不同年度对305d产奶量的影响极显著（P〈0．01）；不同产犊季节对305d产奶量有极显著的影响（P〈0．01），冬季产奶量最高，夏季产奶量最低；不同胎次对305d产奶量有极显著的影响（P〈0．01），305d产奶量随着奶牛胎次的增加产奶量也逐渐增加，5胎后开始下降；不同初产月龄对305d产奶量有极显著的影响（P〈0．01），当初产年龄在24—26月龄间产奶量最高。[结论]年度、产犊季节、胎次和初产月龄均是影响荷斯坦奶牛305d产奶量的主要因素。[ Objective ] In order to investigate factors influencing 305 - days milk yield of Holstein cow. [Method]The effects of SAS8.1 GLM on 305 - days milk yield were analyzed. [Result]Effect of different years on 305 - days milk yield was highly significant （ P 〈 0.01 ） ; Effect of calving season on 305 - days milk yield was highly significant （ P 〈 0.01 ）, 305 - days milk yield was the highest in winter, the lowest in summer; Effect of different parities on 305 - days milk yield was highly significant （ P 〈 0.01 ）, the 305 - days milk yield increased by the parity increased, decreased after the fifth parity; Effect of different first calving month age on 305 - days milk yield was highly significant （ P 〈 0.01 ）, the 305 - days milk yield was the highest when first calving age during 24 -26 months. [ Conclusion] Year, calving season, parity and first calving month age were the main factors influencing 305 - days milk yield.

关 键 词：荷斯坦奶牛 305 d产奶量 年度 产犊季节 胎次 初产月龄 

分 类 号：S823.91[农业科学—畜牧学]