Genome-Wide Analysis Reveals Human-Mediated Introgression from Western Pigs to Indigenous Chinese Breeds.

Genes
Jue WangMeiying Fang

Abstract

Genetic variations introduced via introgression from Western to Chinese pigs have contributed to the performance of Chinese breeds in traits such as growth rate and feed conversion efficiency. However, little is known about the underlying genomic changes that occurred during introgression and the types of traits affected by introgression. To address these questions, 525 animals were characterized using an SNP array to detect genomic regions that had been introgressed from European to indigenous Chinese breeds. The functions of genes located in introgressed regions were also investigated. Our data show that five out of six indigenous Chinese breeds show evidence of introgression from Western pigs, and eight introgressed genome regions are shared by five of the Chinese breeds. A region located on chr13: 12.8-13.1 M was affected by both introgression and artificial selection, and this region contains the glucose absorption related gene, OXSM, and the sensory related gene, NGLY. The results provide a foundation for understanding introgression from Western to indigenous Chinese pigs.

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Citations

Jun 3, 2021·Animals : an Open Access Journal From MDPI·Vivien J ChebiiJean-Baka Domelevo Entfellner

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Methods Mentioned

BETA
PCA

Software Mentioned

ADMIXTURE
Ruby
vcf2geno
rb
DnaSP6
XP
PLINK
CLR
R scripts
PopART

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