摘要
估测了青海细毛羊六个主要数量性状的表型参数和遗传参数,结果表明:青海细毛羊初生重,断奶毛长和周岁体重的遗传力分别为0.380,0.650和0.353,表型选择可收到良好的效果;周岁体重与周岁毛量间的遗传相关为0.847,断奶重与周岁重,用岁毛量间的遗传相关分别为0.480和0.327,因此,断奶重可作为早期选择性状来考虑。
Phenotype and genetic parameters of 6 major quantitat- ive traits of Qinghai fine-wool sheep have been estimated.The result showed that heritabilities of birth weight,weaning staple longth and yearling weight were 0.380,0.653 and 0.353,respectively,and these traits can gain better progress,with individual phenotype selection. The genetic correlation between yearling weight and yearling fleece weight were 0.847,genetic correlation between weaning weight and yearling weight,yearling fleece weight were 0.480 and 0.327,respe- ctively,therefore,weaning weight could be used as the trait of early selection.
基金
国家自然科学基金(编号39160060)
关键词
青海细毛羊
遗传力
遗传相关
体重
羊毛性状
Heritability
Genetic correlation
Phenotyps parameter
Qinghai fine-wool sheep
