Assessment of selective breeding effects and selection signatures in Qingyuan partridge chicken and its strains
文献类型： 外文期刊
作者： Kong, Shaofen 1 ; Cai, Bolin 1 ; Li, Xiaojing 1 ; Zhou, Zhen 1 ; Fang, Xiang 1 ; Yang, Xin 1 ; Cai, Danfeng 1 ; Luo, Xuehui 5 ; Guo, Suyin 6 ; Nie, Qinghua 1 ;
作者机构： 1.South China Agr Univ, Coll Anim Sci, Guangzhou, Peoples R China
2.South China Agr Univ, Coll Anim Sci, State Key Lab Swine & Poultry Breeding Ind, Lingnan Guangdong Lab Agr, Guangzhou, Peoples R China
3.Minist Agr, Guangdong Prov Key Lab Agroanim Genom & Mol Breedi, Guangzhou, Peoples R China
4.Minist Agr, Key Lab Chicken Genet Breeding & Reprod, Guangzhou, Peoples R China
5.Qingyuan Chicken Res Inst, Qingyuan City, Peoples R China
6.Anim Epidem Prevent Ctr, Qingyuan City, Peoples R China
关键词： Qingyuan partridge chicken; whole-genome resequencing; selective breeding; selection signatures; SNP
期刊名称：POULTRY SCIENCE （ 影响因子：4.4； 五年影响因子：4.4 ）
ISSN： 0032-5791
年卷期： 2024 年 103 卷 5 期
页码：
收录情况： SCI
摘要： Qingyuan partridge chicken ( QYM ) is a highly regarded native breed in China, highly esteemed for its exceptional breeding characteristics. However, the investigation into the selection signatures and its strains remains largely unexplored. In this study, blood sampling, DNA extracting, and high -depth resequencing were performed in 27 QYMs. Integrating the genomic data of 14 chicken (70 individuals) breeds from other researches, to analyze the genetic structure, selection signatures, and effects of selective breeding within QYM and its 3 strains (QYMA, QYMB, and QYMC). Population structure analysis revealed an independent QYM cluster, which exhibited distinct from other breeds, with each of its 3 strains displaying distinct clustering patterns. Linkage disequilibrium analysis highlighted QYMB 's notably slower decay rate, potentially in fluenced by selection pressure from various production indicators. Examination of selection signatures uncovered genes and genetic mechanisms associated with genomic changes resulting from extensive selective breeding within the QYM and its strains. Intriguingly, diacylglycerol kinase beta ( DGKB ) and catenin alpha 2 ( CTNNA2 ) were identi fied as commonly selected genes across the 3 QYM strains, linked to energy metabolism, muscle development, and fat metabolism. Our research validates the substantial impact of selective breeding on QYM and its strains, concurrently identifying genomic regions and signaling pathways associated with their distinctive characters. This research also establishes a fundamental framework for advancing yellow -feathered broiler breeding strategies.
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