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Genetic diversity and population structure of indigenous chicken breeds in South China
Authors:Xunhe HUANG  Jinfeng ZHANG  Danlin HE  Xiquan ZHANG  Fusheng ZHONG  Weina LI  Qingmei ZHENG  Jiebo CHEN  Bingwang DU
Institution:1. School of Life Sciences, Jiaying University, Meizhou 514015, China2. College of Animal Sciences, South China Agricultural University, Guangzhou 510642, China3. College of Agricultural, Guangdong Ocean University, Zhanjiang 524088, China
Abstract:A total of 587 individuals from 12 indigenous chicken breeds from South China and two commercial breeds were genotyped for 26 microsatellites to investigate the genetic diversity and population structure. All microsatellites were found to be polymorphic. The number of alleles per locus ranged from 5 to 36, with an average of 12.10 ± 7.00 (SE). All breeds, except White Recessive Rock, had high allelic polymorphism (>0.5). Higher genetic diversity was revealed in the indigenous chicken breeds rather than in the commercial breeds. Potential introgression from the commercial breeds into the indigenous chickens was also detected. The population structure of these indigenous chicken breeds could be explained by their geographical distribution, which suggested the presence of independent history of breed formation. Data generated in this study will provide valuable information to the conservation for indigenous chicken breeds in future.
Keywords:microsatellites  genetic diversity  population structure  indigenous chicken  South China  conservation  
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