雌性激素受体基因(ESR)与长白猪繁殖性状的关系研究

WU Zhen-Fang , LIU De-Wu , WANG Qing-Lai , ZENG Hai-Yu , CHEN Yao-Shen , ZHANG Hao
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引用次数: 11

摘要

为了研究雌激素受体基因(ESR)作为遗传标记改善猪繁殖性状的潜力,对612头长白猪2 239窝母猪Pvu II消化ESR PCR产物的基因型进行了测定。分别对第一胎、第二胎和后胎的数据进行评估。虽然B等位基因的频率远低于A等位基因,但似然比检验表明,基因频率处于Hardy-Weinberg平衡。不同胎次的ESR效果不相等。综上所述,BB基因型母猪在总产仔数(TNB)和产活仔数(NBA)方面表现较好,但平均仔猪初生重(AWB)较低。综上所述,ESR可作为长白鼠群体产仔数选择的一个指标。
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Study on the Association Between Estrogen Receptor Gene (ESR) and Reproduction Traits in Landrace Pigs

To study the potential use of estrogen receptor gene (ESR) as a genetic marker to improve the reproductive traits of pigs, the genotypes of the ESR PCR product digested by Pvu II were determined in 2 239 litters from 612 Landrace sows. The data of the first, second, and later parities were separately evaluated. Although the frequency of the B allele was much lower than that of the A allele, likelihood ratio test showed that the gene frequencies were in Hardy-Weinberg equilibrium. The effects of ESR of different parities were not equal. In summary, the sows with the BB genotype showed better performance for total number of piglets born (TNB) and number of piglets born alive (NBA), but had a lower average piglet weight at birth (AWB). It was concluded that ESR could be used as a marker for the selection of litter size in the Landrace population.

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