Genome-Wide Association Study Reveals Genetic Mechanisms Underlying Intersex and Aproctia in Large White Pigs
文献类型： 外文期刊
作者： Li, Yajun 1 ; Shi, Jiaxin 1 ; Yang, Yingshan 1 ; Ruan, Donglin 1 ; Wu, Jie 1 ; Lin, Danyang 1 ; Liao, Zihao 1 ; Hong, Xinrun 1 ; Zhou, Fuchen 1 ; Liu, Langqing 1 ; Yang, Jie 1 ; Yang, Ming 4 ; Zheng, Enqin 1 ; Wu, Zhenfang 1 ; Cai, Gengyuan 1 ; Zhang, Zebin 1 ;
作者机构： 1.South China Agr Univ, Coll Anim Sci, Natl Engn Res Ctr Breeding Swine Ind, State Key Lab Swine & Poultry Breeding Ind,State R, Guangzhou 510642, Guangdong, Peoples R China
2.South China Agr Univ, Guangdong Prov Key Lab Agroanim Genom & Mol Breedi, Guangzhou 510642, Peoples R China
3.Guangdong Acad Agr Sci, Inst Anim Sci, Guangdong Key Lab Anim Breeding & Nutr, Guangzhou 510640, Peoples R China
4.Zhongkai Univ Agr & Engn, Coll Anim Sci & Technol, Guangzhou 510225, Peoples R China
5.Guangdong Lab Lingnan Modern Agr, Yunfu Subctr, Yunfu 527300, Peoples R China
6.Guangdong Zhongxin Breeding Technol Co Ltd, Guangzhou 510642, Peoples R China
关键词： intersex; aproctia; chip data; imputed data; mixed linear models; genome-wide association studies
期刊名称：ANIMALS （ 影响因子：2.7； 五年影响因子：3.2 ）
ISSN： 2076-2615
年卷期： 2025 年 15 卷 8 期
页码：
收录情况： SCI
摘要： Congenital developmental abnormalities in piglets, such as intersex and aproctia, adversely affect survival rates, growth performance, and genetic breeding efficiency in pig populations. To elucidate their genetic basis, we performed a genome-wide association study (GWAS) on 1030 Large White pigs. We combined 50 K SNP chip data with SWIM-based genotype imputation to enhance the resolution of genetic variation detection, followed by MLM analysis. Our results identified 53 significant SNPs, with 52 associated with intersex and 1 with aproctia. Key candidate genes included MAD1L1, ID4, EFNA5, and PPP1R16B for intersex and ARNT2 for aproctia. Functional enrichment analysis highlighted pathways related to gonadal development (e.g., progesterone-mediated oocyte maturation) and embryonic morphogenesis. Collectively, the identification of these SNPs and candidate genes advances our understanding of the genetic architecture of intersex and aproctia in piglets. These findings provide actionable insights for optimizing genetic breeding strategies and improving health management in Large White pig production, with potential implications for reducing economic losses caused by congenital disorders.
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