4.5 Article

Characterization of the genetic diversity, structure and admixture of British chicken breeds

期刊

ANIMAL GENETICS
卷 43, 期 5, 页码 552-563

出版社

WILEY
DOI: 10.1111/j.1365-2052.2011.02296.x

关键词

biodiversity; conservation; livestock; microsatellites; substructure

资金

  1. UK Biotechnology and Biological Sciences Research Council (BBSRC)
  2. Rare Breeds Survival Trust (RBST)
  3. BBSRC
  4. Biotechnology and Biological Sciences Research Council [BBS/E/D/20211554, BBS/E/D/20320000, BBS/E/R/00001604] Funding Source: researchfish
  5. Medical Research Council [MC_U127592696, MC_PC_U127592696] Funding Source: researchfish
  6. BBSRC [BBS/E/D/20320000, BBS/E/R/00001604, BBS/E/D/20211554] Funding Source: UKRI
  7. MRC [MC_U127592696] Funding Source: UKRI

向作者/读者索取更多资源

The characterization of livestock genetic diversity can inform breed conservation initiatives. The genetic diversity and genetic structure were assessed in 685 individual genotypes sampled from 24 British chicken breeds. A total of 239 alleles were found across 30 microsatellite loci with a mean number of 7.97 alleles per locus. The breeds were highly differentiated, with an average FST of 0.25, similar to that of European chicken breeds. The genetic diversity in British chicken breeds was comparable to that found in European chicken breeds, with an average number of alleles per locus of 3.59, ranging from 2.00 in Spanish to 4.40 in Maran, and an average expected heterozygosity of 0.49, ranging from 0.20 in Spanish to 0.62 in Araucana. However, the majority of breeds were not in Hardy-Weinberg Equilibrium, as indicated by heterozygote deficiency in the majority of breeds (average FIS of 0.20), with an average observed heterozygote frequency of 0.39, ranging from 0.15 in Spanish to 0.49 in Cochin. Individual-based clustering analyses revealed that most individuals clustered to breed origin. However, genetic subdivisions occurred in several breeds, and this was predominantly associated with flock supplier and occasionally by morphological type. The deficit of heterozygotes was likely owing to a Wahlund effect caused by sampling from different flocks, implying structure within breeds. It is proposed that gene flow amongst flocks within breeds should be enhanced to maintain the current levels of genetic diversity. Additionally, certain breeds had low levels of both genetic diversity and uniqueness. Consideration is required for the conservation and preservation of these potentially vulnerable breeds.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.5
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据