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Genetic Diversity of Chinese Indigenous Pig Breeds in Shandong Province Using Microsatellite Markers

文献类型： 外文期刊

作者： Wang, J. Y. 1 ; Guo, J. F. 1 ; Zhang, Q.; Hu, H. M. 1 ; Lin, H. C. 1 ; Wang, Cheng 1 ; Zhang, Yin 1 ; Wu, Y. 1 ;

作者机构： 1.Shandong Acad Agr Sci, Inst Anim Sci & Vet Med, Shandong Prov Key Lab Anim Dis Control & Breeding, Jinan 250100, Peoples R China

2.China Agr Univ, Coll Anim Sci & Technol, Minist Agr, Key Lab Anim Genet & Breeding, Beijing 100193, Peoples R Chin

关键词： gene;microsatellite marker;gene flow;genetic diversity;genetic relationship

期刊名称：ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES （ 影响因子：2.509； 五年影响因子：2.604 ）

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收录情况： SCI

摘要： To investigate the genetic diversity of six Chinese indigenous pig breeds in Shandong province (Laiwu Black, Dapulian Black, Licha Black, Yantai Black, Yimeng Black and Wulian Black), explain their genetic relationship and assess their integrity and degree of admixture with three Western commercial breeds (Landrace, Yorkshire and Duroc), 303 individuals from these breeds were genotyped for 26 microsatellite markers. In general, high genetic diversity (observed heterozygosity ranging from 0.5495 to 0.7746) and large breed differentiation (F-ST = 0.188) were observed. The indigenous pig breeds in Shandong exhibited consistently higher levels of genetic diversity than the three Western breeds. However, compared with the Western breeds, which have an F-ST value of 0.252, the indigenous breeds in Shandong have smaller F-ST value of 0.145. The analysis of breed relationship indicated that the six indigenous breeds are classified into two groups. One includes four breeds, Licha, Yantai, Yimeng and Wulian, which have experienced large gene introgression of the Western breeds through progressive crossbreeding as well as gene flow among themselves. The other includes Laiwu and Dapulian, which are less influenced by the Western breeds and other indigenous breeds in Shandong in the recent past. The results show that some measures must be taken to effectively protect these indigenous pig breeds in Shandong. (Key Words : Microsatellite Marker, Genetic Diversity, Chinese Indigenous Pig Breeds, Shandong Province)

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