新旧版本《中国荷斯坦牛体型鉴定规程》对比分析  

Comparative Analysis of Two Versions of Code of Practice of Type Classification in Chinese Holstein

作　　者：李想[1] 鄢新义 曹露[1] 田佳 秦春华 李委奇 温万 石万海[4] 张胜利[1] 张沅[1] 王雅春[1] 

机构地区：[1]中国农业大学,北京100193 [2]宁夏回族自治区畜牧工作站,银川750004 [3]宁夏四正生物技术工程研究中心,银川750200 [4]北京奶牛中心,北京100085

出　　处：《畜牧兽医学报》2016年第12期2414-2419,共6页ACTA VETERINARIA ET ZOOTECHNICA SINICA

基　　金：宁夏自治区农业育种专项-<优质高产奶牛育种>项目;现代农业(奶牛)产业技术体系建设专项资金(CARS-37);长江学者和创新团队发展计划(IRT1191)

摘　　要：旨在比较分析新旧版本《中国荷斯坦牛体型鉴定规程》(以下简称《规程》)异同点,采用对比分析的方法,针对宁夏地区26个牛场的2 174头处于第一泌乳期的中国荷斯坦牛23个体型性状的单次评定记录,参照新旧版本《规程》的权重系统计算体躯容量、尻部、肢蹄、泌乳系统、乳用特征5个部位得分和综合得分并进行对比分析。结果表明:泌乳系统部位权重增加,乳用特征部位权重减少;新版《规程》综合得分范围增大,更能反映牛群中不同个体以及不同公牛女儿间的差异。综上表明,新版《规程》更适合中国群体,有利于提高遗传进展。To compare and analyze the differences and similarities between two versions of Code of Practice of Type Classification in Chinese Holstein（use Code of Practice for short）,a total of2 174 first lactation Holstein cows from 26 farms in Ningxia area were evaluated by 9-points type classification system.The weights from the two versions of Code of Practice were used to evaluate the score of 5composites（Body size,rump,feet and legs,udder,dairy form）and type final score.The results showed that the weight of Udder was increased while the weight of Dairy Form was decreased.Compared with the final score derived from the old version,the range of final score from the new version was wider,which can explore the difference more efficiently among individuals within the population and difference among daughters from different bulls,respectively.The results conclude that the new version of Code of Practice can better fit to Chinese Holstein,and more beneficial to promote the genetic gain.

关 键 词：体型鉴定 中国荷斯坦牛 对比分析 

分 类 号：Q38[生物学—遗传学]