长白猪主要性能测定及遗传参数估计研究.pdfVIP

湖南农业科学 ，（）： 2011 7 122~124,128 Hunan Agricultural Sciences 长白猪主要性能测定及遗传参数估计研究 周立平 （湖南省农业科学院，湖南 长沙 410125） 摘 要：对湖南省食品公司农科院猪场长白后备猪的生长发育性能和母猪繁殖性能进行了测定，并进行了遗传力和遗传相关估 计，结果表明：生长发育性状都具有中等以上的遗传力，繁殖性状中个体初生重、初生窝重、断奶个体重、断奶窝重具有中等遗传 力，但产仔数、活仔数、断奶头数、 日龄窝重均为低遗传力。生长发育各性状间都呈较强相关，在繁殖性状中初生个体重与产仔 21 数、 日龄窝重、断奶头数、断奶窝重、断奶个体重之间存在较强的正遗传相关，但与活仔数的遗传相关较弱。 21 关键词：长白猪；生长发育性状；繁殖性状；遗传力；遗传相关 中图分类号： 文献标识码： 文章编号： （ ） S858.28 A 1006-060X 2011 07-0122-03 Determination of Main Characters and Estimation of Genetic Parameters for Landrace ZHOU Li-ping (Hunan Academy of Agricultural Sciences, Changsha 410125, PRC) Abstract: The growth characters and the reproductive characters of landrace, which was provided by Pig farm of Hunan Food Company in Hunan Academy of Agricultural Sciences, were determined, and the hereditary capacity and genetic correlation of it were also estimated. The results showed that all the growth characters had middle and over middle hereditary capacity; in reproductive characters, the individual birth weight, the birth litter weight, the individual weanling weight and the weanling litter weight all had middle hereditary capacity, but the litter size, the live litter size, the weanling pig number and the 21 -day -old litter weight all had low hereditary capacity. There were stronger genetic correlations between each growth character; in reproductive characters, there were stronger positive genetic correlations between the individual birth w