鸡开产日龄和开产体质量的主基因+多基因混合遗传分析  

Genetic Analysis of Chicken Age and Body Weight at the First Egg Laying Using Mixed Major Gene and Polygene Mixed Modelinheritance

作　　者：马猛[1,2] 王克华[1] 曲亮[1,2] 窦套存[1,2] 沈曼曼[1] 郭军[1] 卢建[1,2] 胡玉萍[1,2] 

机构地区：[1]江苏省家禽科学研究所,江苏扬州225003 [2]扬州翔龙禽业发展有限公司,江苏扬州225200

出　　处：《江西农业大学学报》2015年第3期530-535,共6页Acta Agriculturae Universitatis Jiangxiensis

基　　金：国家现代农业产业技术体系建设专项资金(CARS-41-k02);江苏省农业三项工程项目(SXGC(2013)357);国家"十二五"科技支撑项目(2011BAD28B03);江苏省自然科学基金(BK20131237);江苏省扬州市重大科技成果转化项目(YZ2012009)

摘　　要：为研究鸡开产性状的分子遗传机理,揭示其内在遗传规律,以绿壳蛋鸡黑羽纯系和白来航鸡为亲本构建资源群体,测定亲本P1、P2和F1、F2代的开产日龄和开产体质量,运用数量性状主基因+多基因混合遗传模型软件SEA-G4F2对开产日龄和开产体质量进行遗传分析。结果表明:开产日龄的遗传模型为模型E,即两对加性-显性-上位性主基因+加性-显性-上位性多基因混合遗传模型,主基因遗传率为25.06%;开产体质量的适合模型为模型E-1,即2对加性-显性-上位性主基因+加性-显性多基因混合遗传模型,其主基因遗传力达到了63.28%,两个性状的多基因遗传率均很小,主基因对两个性状的调控作用远远大于多基因。In order to study the molecular genetic mechanism and inherent genetic discipline of some traits at the first egg laying in chicken. Green-eggshell layer black feather pure lines and White Leghorn acted as parents to constructed the resource population,the age and body weight at the first egg laying of P t, P2, Ft and F2 were measured,the analysis software of major gene and polygene mixed inheritance model in the age and body weight at the first egg laying was SEA-G4F2.The results showed that the inheritance model of the age at the first egg laying was E, namely two pairs of additive-dominance-epistatic major-genes plus additive-domi- nanee-epistatie polygene mixed genetic model, the heritability of major-gene was 25.06% ;the best model of the weight at the first egg laying was model E-1 ,namely two pairs of additive-dominance-epistatic major-genes plus additive-dominance polygene mixed genetic model,the heritability of the major-genes was 63.28% ,The poly- gene heritability of these traits was low, the major genes had a bigger effect on these traits.

关 键 词：开产日龄 开产体重 主基因 多基因 遗传 

分 类 号：S831.2[农业科学—畜牧学]