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논문 기본 정보

자료유형
학술저널
저자정보
Liu Tianxin (Northeast Agricultural University, People’s Republic of China) Ji Dongqing (Northeast Agricultural University, People’s Republic of China) Li Xinyuan (Northeast Agricultural University, People’s Republic of China) Liu Jiadong (Northeast Agricultural University, People’s Republic of China) Xu Fei (Northeast Agricultural University, People’s Republic of China) Miao Zhiying (Northeast Agricultural University, People’s Republic of China) Chang Yang (Northeast Agricultural University, People’s Republic of China) Tian Ming (Heilongjiang Academy of Agricultural Sciences, People’s Republic of China) Xu Chunzhu (Northeast Agricultural University, People’s Republic of China)
저널정보
한국유전학회 Genes & Genomics Genes and Genomics Vol.46 No.4
발행연도
2024.4
수록면
389 - 398 (10page)
DOI
10.1007/s13258-024-01490-1

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Objective Min pigs are a unique genetic resource among local pig breeds in China. They have more excellent characteristics in cold and stress resistance, good meat quality, and a high reproductive rate. However, the genetic structure and driving factors remain unclear in the nucleus herd. In this study, the genetic diversity of Min pigs was studied to reveal the formation mechanism of its unique genetic structure. We hope to protect and develop the genetic resources of Min pigs. Methods We analyzed different types of genes to identify the genetic structure and gene introgression pattern of Min pigs. The nuclear DNA dataset includes information on 21 microsatellite loci and 6 Y-chromosome genes, and the mitochondrial D-loop gene is selected to represent maternal lineages. The above genes are all from the nucleus herd of Min pigs. Results The results of genetic structure identification and analysis of potential exogenous gene introgression patterns indicate that the nucleus herd of Min pigs maintains a high level of genetic diversity (polymorphism information content = 0.713, expected heterozygosity = 0.662, observed heterozygosity = 0.612). Compared with other Asian pig breeds, the formation of Min pig breeds is more special. Gene introgression from European pig breeds to Min pigs has occurred, which is characterized by complete introgression of paternal genes and incomplete introgression of maternal genes. Conclusion Gene introgression caused by cross-breeding is not the main factor leading to the formation of the current genetic structure of Min pigs, but this process has increased the level of genetic diversity in the nucleus herd. Compared with the influence of gene introgression, our research suggest that artificial selection and environmental adaptive evolution make Min pigs form unique genetic characteristics.

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