Weighted single-step GWAS identified candidate genes associated with carcass traits in a Chinese yellow-feathered chicken population

文献类型： 外文期刊

第一作者： Pan, Rongyang

作者： Pan, Rongyang;Qi, Lin;Xu, Zhenqiang;Zhang, Dexiang;Nie, Qinghua;Zhang, Xiquan;Luo, Wen;Pan, Rongyang;Qi, Lin;Xu, Zhenqiang;Zhang, Dexiang;Nie, Qinghua;Zhang, Xiquan;Luo, Wen;Pan, Rongyang;Pan, Rongyang;Qi, Lin;Zhang, Dexiang;Nie, Qinghua;Zhang, Xiquan;Luo, Wen;Pan, Rongyang;Qi, Lin;Xu, Zhenqiang;Zhang, Dexiang;Nie, Qinghua;Zhang, Xiquan;Luo, Wen;Pan, Rongyang;Qi, Lin;Xu, Zhenqiang;Zhang, Dexiang;Nie, Qinghua;Zhang, Xiquan;Luo, Wen

作者机构：

关键词： Chinese yellow-feathered chicken; weighted single-step GWAS; carcass traits; 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 2 期

页码：

收录情况： SCI

摘要： Carcass traits in broiler chickens are complex traits that are influenced by multiple genes. To gain deeper insights into the genetic mechanisms under-lying carcass traits, here we conducted a weighted sin-gle-step genome-wide association study (wssGWAS) in a population of Chinese yellow-feathered chicken. The objective was to identify genomic regions and candi-date genes associated with carcass weight (CW), evis-cerated weight with giblets (EWG), eviscerated weight (EW), breast muscle weight (BMW), drumstick weight (DW), abdominal fat weight (AFW), abdomi-nal fat percentage (AFP), gizzard weight (GW), and intestine length (IL). A total of 1,338 broiler chickens with phenotypic and pedigree information were included in this study. Of these, 435 chickens were genotyped using a 600K single nucleotide polymorphism chip for association analysis. The results indicate that the most significant regions for 9 traits explained 2.38% to 5.09% of the phenotypic variation, from which the region of 194.53 to 194.63Mb on chromosome 1 with the gene RELT and FAM168A identified on it was significantly associated with CW, EWG, EW, BMW, and DW. Meanwhile, the 5 traits have a strong genetic correla-tion, indicating that the region and the genes can be used for further research. In addition, some candidate genes associated with skeletal muscle development, fat deposition regulation, intestinal repair, and protection were identified. Gene ontology and Kyoto Encyclopedia of Genes and Genomes enrichment analyses suggested that the genes are involved in processes such as vascular development (CD34, FGF7, FGFR3, ITGB1BP1, SEMA5A, LOXL2), bone formation (FGFR3, MATN1, MEF2D, DHRS3, SKI, STC1, HOXB1, HOXB3, TIPARP), and anatomical size regulation (ADD2, AKT1, CFTR, EDN3, FLII, HCLS1, ITGB1BP1, SEMA5A, SHC1, ULK1, DSTN, GSK3B, BORCS8, GRIP2). In conclusion, the integration of phenotype, genotype, and pedigree information without creating pseudo-phenotype will facilitate the genetic improve-ment of carcass traits in chickens, providing valuable insights into the genetic architecture and potential can-didate genes underlying carcass traits, enriching our understanding and contributing to the breeding of high-quality broiler chickens.

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