奶牛乳房性状与产奶量及排乳性能的关系  

Correlation Analysis of Udder Traits and Production in Dairy Cattle

作　　者：王力生[1] 朱洪龙[1] 杨寿春 方必春[2] 杨海[1] 

机构地区：[1]安徽农业大学动物科技学院,安徽合肥230036 [2]安徽淮南乳品公司,安徽淮南232000

出　　处：《中国牛业科学》2007年第4期14-17,共4页China Cattle Science

摘　　要：选择胎次相同,泌乳月份相近的经产荷斯坦牛197头,分别测定其后乳房宽度,后乳房深度,后乳房高度,乳房纵沟深,乳头直径,乳头长度等6个高遗传力性状,并与排乳性能及产奶量的相关性进行研究。结果表明:奶牛乳房纵沟深,乳头直径,乳头长度等6个高遗传力性状,并与排乳性能及产奶量的相关性进行研究。结果表明:奶牛乳房纵沟深、后乳房宽度、乳头长、乳头直径与排乳速度有极显著正相关(P<0.01),后乳房高度与排乳速度呈现中等正相关(P<0.05),平均排乳时间与后乳房宽度呈现显著正相关(P<0.05);日产乳量与乳头长度呈中等负相关(P<0.05),与乳房纵沟深、乳头直径呈显著正相关(P<0.05),305 d产乳量与乳房纵沟深、后乳房宽度呈极显著强正相关(P<0.01),与乳头直径呈显著正相关(P>0.05),与乳头长度有极显著负相关(P<0.01)。Six higher heritability traits including udder width, rear udder depth, rear udder height, udder longitudinal furrow depth, teat diameter and length of 197 postparous cows with the same parity and similar lactation month were measured to investigate the relationships between udder traits and milk production. The results indicated that the velocity of milk ejection had a highly positive correlation with the udder longitudinal furrow depth, rear udder width, teat length and teat diameter （P〈0. 01）, a moderate positive correlation between the velocity of milk ejection and rear udder height （P〈0 05）, there was a significant positive correlation between average milk ejection time and rear udder width （P〈0.05）; daily milk production was negatively correlated with teat length （P〈0.05）, but positively with teat diameter and udder longitudinal furrow depth （P〈0. 01） ;305 d milk production displayed a strong positive correlation with udder longitudinal furrow depth, rear udder width and teat diameter （P〈0. 05）, and a significant negative correlation with teat length （P〈0. 01）.

关 键 词：奶牛 乳房性状 产奶量 排乳性能 

分 类 号：S823.2[农业科学—畜牧学]