新西兰白兔生长性状的遗传参数估计  

Genetic Parameters Estimation of Growth Traits in New Zealand White Rabbit

作　　者：贾先波[1] 陈仕毅[1] 赖松家[1] 

机构地区：[1]四川农业大学动物遗传育种研究所,四川温江611130

出　　处：《四川农业大学学报》2014年第2期199-204,共6页Journal of Sichuan Agricultural University

基　　金：国家现代农业技术体系项目(CARS-44-A-2);四川省"十二五"科技支撑项目(2011NZ0099-4)

摘　　要：【目的】对新西兰白兔不同生长日龄体重和平均日增重进行遗传分析。【方法】利用成都市爱华畜牧科技有限公司种兔场2011-2013年的生长性状记录，采用多性状动物模型约束性最大似然法（REML）对新西兰白兔35、42、56、70、84日龄的5个体重性状，35～42、42～56、56～70、70～84日龄的4个平均日增重性状进行遗传参数估计。【结果】结果表明，新西兰白兔35、42、56、70、84日龄体重的遗传力分别是0.63、0.46、0.43、0.42、0.39。各日龄间体重呈强正遗传相关，相邻日龄间的遗传相关较其他日龄间强。35～42、42～56、56～70、70～84日龄平均日增重的遗传力分别是0.30、0.36、0.31、0.21。4个平均日增重间呈弱遗传相关。【结论】为新西兰白兔育种方案的制定和选育工作提供了理论基础。Obj ective Genetic analyses were carried out for different daily weight and average dai-ly gain of New Zealand white rabbit.[Method]Data of New Zealand white rabbit were collected from Chengdu Aihua farm animal technology limited company from 2011 to 2013.And genetic pa-rameters were estimated for 35,42,56,72,84 d weight and 35-42,42-56,56-70,70-84 d average daily gain by multi-trait animal model with REML algorithm.[Results]The heritabilities of 35,42,56,70,84 d weight were 0. 63,0. 46,0. 43,0. 42,and 0. 39 respectively.The weights appeared strongly positive genetic correlations to each other,while genetic correlation were stron-ger between two closer weights than others.The heritabilities of 35-42,42-56,56-70,70-84 d average daily gain （ADG）were 0. 30,0. 36,0. 31,and 0. 21 respectively.There were weak genetic correlations among different ADGs.[Conclusion]It is a work that provides basic theoreti-cal parameters for New Zealand white rabbit breeding.

关 键 词：新西兰白兔 生长性状 遗传力 遗传相关 

分 类 号：S829[农业科学—畜牧学]