Acta Veterinaria et Zootechnica Sinica ›› 2022, Vol. 53 ›› Issue (2): 646-653.doi: 10.11843/j.issn.0366-6964.2022.02.031

• RESEARCH NOTES • Previous Articles     Next Articles

Genetic Diversity Analysis of 8 Local Chicken Breeds Based on Whole Genome SNP

WU Yanping, WEI Yue, KANG Zhaofeng, XIE Minggui, XIE Jinfang*   

  1. Institute of Animal Science, Jiangxi Academy of Agricultural Sciences, Nanchang 330200, China
  • Received:2021-06-10 Online:2022-02-23 Published:2022-03-02

Abstract: In order to reveal the genetic diversity of local chicken breeds in Jiangxi and its surrounding areas, 125 blood samples were collected from 5 local chicken breeds in Jiangxi province, 1 in Guangdong province, 1 in Zhejiang province and 1 in Jiangsu province. The population structure, network relationship and phylogeny of 8 local chicken breeds were analyzed by the whole genome SNP chip. The results showed that the polymorphic information content of the most of 45 647 loci in 8 local chicken was 0.25<PIC<0.5, which was moderate polymorphic, indicated that the 8 local chicken breeds had rich genetic diversity. Cluster analysis showed that 8 local chicken breeds had weak geographical relationship, the genetic distance between breeds was 0.254 9-0.360 9, the genetic distance between Xiushui yellow feather blcak chicken and Taihe black-bone silky chicken was 0.254 9, and that between Dongxiang green-eggshell layer and Chongren partridge chicken was 0.306 9. The genetic distance between Anyi gray chicken and other breeds was between 0.274 7 and 0.340 8, among which the genetic distance between Anyi gray chicken and Xiushui yellow feather black chicken was the closest, and the genetic distance between Anyi gray chicken and Chongren partridge chicken was the furthest. The results indicated that the 8 local chicken breeds have rich genetic diversity, which can provide genetic material for future breed development and utilization. There was no significant genetic differentiation among the 8 local chicken breeds, two black chicken breeds (Taihe black-bone silky chicken and Xiushui yellow feather black chicken) and Anyi gray chicken have relatively close genetic relationship.

Key words: local chicken, whole genome SNP, genetic diversity, genetic distance, population genetic structure

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