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Exploring the genetic features and signatures of selection in South China indigenous pigs

文献类型： 外文期刊

作者： Diao Shu-qi 1 ; Xu Zhi-ting 1 ; Ye Shao-pan 1 ; Huang Shu-wen 1 ; Teng Jin-yan 1 ; Yuan Xiao-long 1 ; Chen Zan-mou 1 ; Zh 1 ;

作者机构： 1.South China Agr Univ, Guangdong Prov Key Lab Agroanim Genom & Mol Breed, Natl Engn Res Ctr Breeding Swine Ind, Coll Anim Sci, Guangzhou 510642, Peoples R China

关键词： pigs; population structure; effective population size; SNP

期刊名称：JOURNAL OF INTEGRATIVE AGRICULTURE （ 影响因子：1.984； 五年影响因子：1.959 ）

ISSN： 2095-3119

年卷期： 2021 年 20 卷 5 期

页码：

收录情况： SCI

摘要： To explore the genetic features and signatures of selection in indigenous pigs from South China and Duroc pigs, 259 pigs from six populations were genotyped using single-nucleotide polymorphism (SNP) BeadChips. Principal component analysis (PCA), effective population size (Ne), linkage disequilibrium (LD), and signatures of selection were explored and investigated among the six pig populations. The results showed the Ne of five South China indigenous pig populations has been decreasing rapidly since 100 generations ago. The LD between pairwise SNP distance at 100 kb ranged from 0.16 to 0.20 for the five indigenous pig populations, while it was 0.32 for the Duroc population. However, the LD of all six pig populations showed the opposite order at long distances (>5 Mb). Furthermore, 15 potential signatures of selection associated with meat quality and age at puberty were exclusively detected in South China indigenous pigs, while eight potential signatures of selection associated with growth traits were detected in Duroc pigs. Our work provides valuable insights for the utilization and conservation of South China indigenous pigs.

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