猪ESR基因位点多态性与繁殖性状相关分析  

Polymorphism of swine ESR gene and its correlation with reproductive traits

作　　者：朱志明[1] 林长光[1] 李盛霖[1] 陈晖[1] 郑嫩珠[1] 缪中纬[1] 孙世坤[1] 刘亚轩 叶贤慧 

机构地区：[1]福建省农业科学院畜牧兽医研究所,福建福州350013 [2]福建光华农牧开发有限公司,福建福州350001

出　　处：《福建农业学报》2007年第3期227-230,共4页Fujian Journal of Agricultural Sciences

基　　金：福建省发改委资助项目([2005]527号)

摘　　要：采用PCR-RFLP技术检测长白猪、大白猪以及长大杂种的ESR基因位点多态性,并分析ESR各基因型与繁殖性状的相关性。结果表明,3个猪群在该位点均存在多态性,A等位基因频率占有优势均在0.75以上,而B等位基因频率较低,均小于0.25。不同基因型与初产胎次、经产胎次母猪的各繁殖性状(总产仔数、产活仔数、初生窝重、断奶成活数)呈AA<AB<BB趋势;与总体胎次母猪的繁殖性状(总产仔数、产活仔数、初生窝重)也呈AA<AB<BB趋势;其中经产胎次及总体胎次的总产仔数基因型AA与AB之间差异显著(P<0.05)。The polymorphism of ESR gene in Landrace, Large White and Landrace×Large White was detected by using PCR - RFLP. The correlation between the genotypes of ESR gene and reproductive traits was analyzed. The result indicated that ESR locus existed polymorphism in the 3 swine populations. The allele frequency was higher than 0.75, and the B allele frequency lower than 0.25. The reproductive traits （Total Number Alive, or TNB; Number Born Alive, or NBA; Birth Weight, or BW; Number Born Weaning, or NBW） of the first and later parities were affected by various genotype. They tended to be AA〈AB〈BB. In addition, the reproductive traits （TNB, NBA, and BW） of all parities were also affected by various genotype with the same trend, i. e. , AA〈AB〈BB. The TNB of the later parity and all parities was significantly different between AA and AB genotype （P〈0. 05）.

关 键 词：ESR基因 多态性 繁殖性状 PCR—RFLP 

分 类 号：Q789[生物学—分子生物学] S828[农业科学—畜牧学]