蚂蚁山奶牛场奶牛乳房线性性状的评定和分析  

Assessment and Analysis on Udder Linear Traits of Holstein Cows in Mayishan Cow Farm

作　　者：程郁昕[1] 代守志[1] 汪金喜[1] 宋婷婷[1] 刘玉燕[1] 

机构地区：[1]安徽科技学院动物科学学院,凤阳233100

出　　处：《中国草食动物》2007年第2期25-26,共2页China Herbivores

基　　金：安徽省教育厅课题(2006KJ202B)资助

摘　　要：选择蚌埠蚂蚁山奶牛场,随机抽取荷斯坦奶牛220头进行6个乳房线性性状即前房附着、后房高度、后房宽度、悬韧带、乳房深度和乳头长度的线性评定和分析。结果表明:蚂蚁山奶牛场荷斯坦奶牛6个乳房性状线性评分分别是30.0分、46.7分、29.5分、38.3分、18.0分和21.0分;功能分各为80分、92分、80分、88分、68分和72分;奶牛乳房线性性状的总体评定成绩中等偏上,前房附着、后房高度、后房宽度、悬韧带、乳房深度、乳头长度的评定等级分别为佳、优、佳、良、中、中;其中以“后房高度”表现最好。Mayishan cow farm was selected as the experimental unit, and 220 Holstein cows were randomly sampled in order to make assessment and analysis on udder linear traits of Holstein cows, which including fore udder attachment, rear udder height, rear udder width, udder cleft, udder depth, and teat length. The results showed as follows： in Mayishan cow farm, the linear marks of fore udder attachment, rear udder height, rear udder width, udder-cleft, udder depth, and teat length were 30. 0, 46. 7, 29. 5, 38.3, 18. 0, and 21.0 respectively; and the functional marks were 80, 92, 80, 88, 68, and 72 respectively. At total, the linear assessment rank of udder linear traits of Holstein cows was better than Fair （F）, and the linear assessment ranks of fore udder attachment, rear udder height, rear udder width, udder cleft, udder depth, and teat length were Good Plus （G＋）, Excellent （EX）, Good Plus （G＋）, Very Good （VG）, Fair （F）, and Fair （F） respectively. Among them, the linear assessment rank of rear udder height was the best.

关 键 词：荷斯坦奶牛 乳房线性性状 线性分 功能分 评定等级 

分 类 号：S823.2[农业科学—畜牧学]