高原瘦肉型猪白系选育群主要繁殖性能遗传参数的估测  

Estimation of Genetic Parameter of Main Reproductive Performance in Breeding Herd of White Line for Plateau Lean Meat Type of Pig

作　　者：周继平[1] 

机构地区：[1]青海省畜牧兽医科学院,西宁810016

出　　处：《青海畜牧兽医杂志》2008年第4期13-14,共2页Chinese Qinghai Journal of Animal and Veterinary Sciences

摘　　要：本文测定了高原瘦肉型猪白系选育群几个世代的主要繁殖性能的表型参数,对遗传力及表型相关进行了估测。估测结果表明:繁殖性能的变异比较大,特别是断奶时的指标;遗传力除断奶窝重和乳头数外,其他性能均在0.2以下;繁殖性能间存在着较强的相关关系,其中断奶窝重与初生窝重呈正显著相关(P<0.05),且与产仔数、活产仔数、30日龄断奶头数均呈正极显著相关(P<0.01)。The phenotype parameters of main reporductive line for plateau lean meat type of pig in the several generations and the correlation of heritability to phenotype was estimated. The results showed that the reproductive performances, especially the index at the weaning, were larger variation. The heritability of reproductive performancl were below 0.2 except the weaning weitght of litter and the number of nipple. There was a strong positive correation. Of them, there was the sigilaficant positive correlation between the weaning weight of litter and the newborn weight of litter （ P 〈 0.05 ） ; there was the very significant positive correalation of weaning weight of litter to the number born, the survival number born and the piglet number at weaning aged 30-day （ P 〈0.01）.

关 键 词：高原瘦肉型猪 繁殖性能 遗传参数 

分 类 号：S821.2[农业科学—畜牧学]