畜牧兽医学报2023，Vol.54Issue(12)：4943-4951,9.DOI:10.11843/j.issn.0366-6964.2023.12.006
商品猪群体效应对纯种猪胴体性状基因组选择准确性的影响
The Population Effect of Commercial Pigs on the Accuracy of Genomic Selection for Carcass Traits in Duroc Pigs
摘要
Abstract
The purpose of this experiment was to explore methods to improve the accuracy of ge-nomic selection(GS)for Duroc pigs'carcass traits,and to provide a theoretical basis for impro-ving the accuracy of GS for breeding pig carcass traits.In this study,corrected backfat thickness at 115 kg(BF115),corrected lion eye area at 115 kg(LEA115),corrected age at 115 kg(AGE115)were studied in 2 796 Duroc boars and 3 149 Duroc × Landrace × Yorkshire(DLY)commercial pigs.Additive animal model(AM)and additive add dominant animal model(ADM)were constructed to verify the impact of dominant effects on GS accuracy of Duroc pigs;exploring the impact of different combinations of DLY and Duroc pigs in the reference population on GS ac-curacy of Duroc pigs.The reference population were divided into the following groups:group 1,Duroc pigs as the reference group;group 2,with DLY pigs as the reference group;group 3,Du-roc and DLY pigs were merged as reference group.The research results indicated that after adding dominant effects,the accuracy of GS for AGE115 increased by 2.84％to 4.87％in group 1,2,and 3,while the accuracy of GS for Duroc BF115 and LEA115 increased by 1.37％to 16.18％in group 1 and 3;compared to group 1,the accuracy of GS for BF115 and LEA115 in the AM increased by 6.19％to 7.35％in group 3,and by 6.52％in the ADM.In summary,domi-nant effects can improve the accuracy of GS for pig carcass traits,and combining Duroc and DLY pigs as reference population can improve the accuracy of GS for some pig carcass traits,that it is recommended to include suitable hybrid pig population in the reference population for purebred pig breeding.关键词
杜洛克猪/杜长大猪/基因组选择/显性效应/参考群Key words
Duroc pig/Duroc× Landrace× Yorkshire pigs/genomic selection/dominant effects/reference population分类
农业科技引用本文复制引用
杨凯,卢倬达,何健,张瑞琪,王素青,李克标,赵云翔,朱晓萍,郭金彪..商品猪群体效应对纯种猪胴体性状基因组选择准确性的影响[J].畜牧兽医学报,2023,54(12):4943-4951,9.基金项目
广东省重点领域研发计划项目(2022B0202090002) （2022B0202090002）
