伊犁地区荷斯坦奶牛体尺体重及外貌评分对产奶量的影响

[目的]了解荷斯坦奶牛体尺、体重及外貌评分对产奶量的影响.[方法]通过对伊犁地区荷斯坦奶牛和褐牛的品种、外貌、体尺测定登记与整理,统计伊犁地区奶牛的体高、体长、胸围、管围、体重及外貌评分并利用数据,通过SPSS13.0统计软件进行产奶量的相关性分析.[结果]荷斯坦奶牛体高、体长、胸围、管围、体重、外貌评分对产奶量有显著影响(P＜0.01).[结论]为今后该地区在奶牛群的遗传选育和生产实践中正确考虑奶牛体尺、体重、体型性状、外貌性状对生产性能的影响,选择高产、稳产、健康的奶牛,合理规划育种方案和加强饲养管理,提供可靠的依据.

Influence of Conformation Weight and Appearance of Holstein cows on Milk Yield in Ili Area

【Objective】In order to understand influence of the body size,body weight and appearance score of Holstein cows on Milk Yield,【Method】Registration forms of Holstein cattle's and Brown cattle's,breed,appearance,body size and body weight from Ili area were systemized,body height,body length,heart girth,circumference of cannon bone and body weight of Holstein cattles in Ili area were counted,and correlation analysis between these factors and milk production was carried on by use of these data through SPSS13.0.【Result】 Results showed that body height,body length,chest circumference,shin circumference,body weight of Holstein cattle and appearance grade had extremely significant influence on milk production(P<0.01).【Conclusion】This study provided a reliable basis for the improvement of body size,body weight,apperance,genetic breeding ancl production of dairy cows in this area.