8个猪种ESR和FSHβ基因合并基因型与繁殖性状关系的研究  

Relationship between the Combined Genotypes of ESR and FSHβ Genes and Reproductive Traits in Eight Pig Breeds

作　　者：刘婵娟[1] 曾勇庆[1] 魏述东[2] 唐辉[1] 樊新忠[1] 孙延晓[1] 陈其美[1] 李华[1] 

机构地区：[1]山东农业大学动物科技学院,泰安271018 [2]山东省莱芜市畜牧兽医技术推广中心,莱芜271100

出　　处：《畜牧兽医学报》2009年第3期291-295,共5页ACTA VETERINARIA ET ZOOTECHNICA SINICA

基　　金：国家发改委生物育种高技术专项(2007249051);国家“863”计划重点项目(2008AA101008);山东省农业良种工程重大课题优质瘦肉猪配套系选育项目(2007LZ013);山东省教育厅科技计划项目(J07WF08)

摘　　要：采用测序和PCR-SSCP方法,对莱芜猪、鲁莱黑猪、里岔黑猪、鲁烟白猪、新沂蒙黑猪5个山东地方/培育猪种和大约克夏、长白、杜洛克3个引进猪种共8个猪种323头繁殖母猪进行ESR和FSHβ基因的多态性分析,并采用最小二乘法分析了这2个基因座的合并基因型对繁殖性状的影响。结果表明:2个基因位点在8个猪种的测定群体中均存在多态性,但山东地方/培育猪种与引进猪种间在合并基因型频率上存在较大差异。遗传效应分析表明,合并基因型对初产和经产胎次的产仔数影响显著(P<0.05),优势合并基因型BBBB的母猪比AAAA合并基因型母猪的初产总产仔数和活产仔数分别多2.54和2.65头/胎,经产总产仔数和活产仔数分别多2.29和2.35头/胎,并且合并基因型对产仔性状的遗传效应并非各基因型效应的简单相加。The polymorphisms of estrogen receptor （ESR） and follicular-stimulating hormone beta subunit （FSHβ） genes were detected by DNA sequencing and PCR-SSCP methods, and effects of combined genotypes of ESR and FSHβoci on reproductive traits in pigs were analyzed by the least square analysis. Data of total number born （TNB） and number born alive （NBA） from 323 sows, including five Shandong native pig breeds and three western pig breeds, were collected. The results showed that the polymorphic sites of both ESR and FSH~ genes were found in all populations tested. The combined genotypes distribution, however, revealed great differences between Shandong native pig breeds and western pig breeds. It was demonstrated that the effects of combined genotypes on TNB and NBA were significant （P〈0.05）. The sows with combined genotype BBBB are the most prolific. For the first and later parities sows, BBBB combined geno type produced 2.54 TNB, 2.65 NBA and 2.29 TNB, 2.35 NBA more than AAAA combined genotype, respectively. Moreover, the genetic effects of combined genotypes on litter size traits were not the simple summation of the isolated genotypes.

关 键 词：猪 ESR基因 FSHΒ基因 合并基因型 繁殖性状 

分 类 号：S828.2[农业科学—畜牧学]