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Testing different single nucleotide polymorphism selection strategies for prediction of genomic breeding values in dairy cattle based on low density panels
3K chip genomic selection prediction single nucleotide polymorphism
2015/6/24
In human and animal genetics dense single nucleotide polymorphism (SNP) panels are widely used to describe genetic variation. In particular genomic selection in dairy cattle has become a routinely app...
Selection of a suitable definition of environment for the estimation of genotype × environment interaction in the weaning weight of beef cattle
environment beef cattle genetic parameters REML maximum likelihood
2015/6/5
Genotype by environment interactions for weaning weight in beef cattle were tested using several definitions of environments. Four breeds of beef cattle (Hereford, Aberdeen Angus, Beef Simmental, and ...
The use of performance test parameters for selection of gilts before their placement into breeding
gilt growth carcass value backfat thickness lean meat content body condition
2015/6/2
The objectives of the paper were to evaluate carcass value in reared gilts on the basis of carcass analysis during the station test of purebred progeny of pigs and ultrasonically with Sonomark-100 or ...
选择作用下家鸡淀粉酶的遗传多态性研究――基因频率分化、相关效应估计和标记辅助选择试验Plasma Amylase Polymorphism under Selection
淀粉酶 遗传多态性 遗传标记 选择试验
2008/1/30
摘要对“三黄”鸡4个品系的血液淀粉酶(Amy-1)基因频率进行了估计, 结果表明: Amy-1基因频率具有明显的品系特异性, 父系Amy-1A高; 母系Amy-1B频率高。人工选择可能是导致两个具有相同遗传来源的品系（Ⅱ系和Ⅲ系）Amy-1基因频率发生分化的原因。利用线性模型估计了Amy-1基因的加性效应，结果表明：Amy-1B有利于产蛋性能, 而Amy-1A有利于体重和蛋重的提高。标记辅助选择试...
山羊经济性状标记辅助选择的遗传效应分析Genetic Effect of the Marker Assisted Selection on Economic Traits of Goats
山羊 经济性状 标记辅助选择 遗传效应
2008/1/8
摘要
本研究以辽宁绒山羊、柴达木绒山羊和柴达木山羊3个群体共147只山羊为研究对象，运用PAGE和RAPD技术对山羊的体重、绒产量和绒细度3个性状进行了与标记基因关系的遗传分析，结果表明：EsD2-2型、LAPBB型和PA-32-2型分别为体重、绒产量和绒细度性状的优势标记基因型；可利用标记辅助预测的方法充分利用多基因座标记基因间的互作效应；在体重上，寻找到有显著选择效应的RAPD条带11...
五种品系猪亲缘关系的RAPD分析Analysis on Phylogenetic Relationship and Selection of Polymorphic Primers to Five Breeds of Pigs by RAPD of 190 Arbitrary Primers
随机扩增多态DNA 小型猪 亲缘关系
2007/12/7
摘要应用190个RAPD引物对贵州小型猪,巴马小型猪、西双版纳近交系小耳猪JB和JS亚系、荣昌猪Ⅰ系、长白猪的亲缘关系进行了初步分析,其中39个引物的扩增结果具有非常明显的品系间多态性,将其扩增结果以RAPDistance package Version 1?04程序进行分析,计算相对遗传距离指数1－F,再用NJ法进行聚类分析,构建系统树。结果表明,三种小型猪相互间亲缘关系较近,尤以贵州小型猪与巴...