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Animal Breeding and Genetics
Asian-Australasian Journal of Animal Sciences 2011;24(12): 1637-1643.
DOI: https://doi.org/10.5713/ajas.2011.11144    Published online October 24, 2011.
Discrimination of Korean Native Chicken Populations Using SNPs from mtDNA and MHC Polymorphisms
M. R. Hoque, S. H. Lee, K. C. Jung, B. S. Kang, M. N. Park, H. K. Lim, K. D. Choi, J. H. Lee
Abstract
Korean native chickens are a very valuable chicken population in Korea and their prices are higher than that of commercial broilers. In order to discriminate two commercial Korean native chicken populations (CCP1 and CCP2), single nucleotide polymorphisms (SNPs) from mitochondrial (mt) DNA D-loop sequences and LEI0258 marker polymorphisms in the major histocompatibility complex (MHC) region were investigated. A total of 718 birds from nine populations were sampled and 432 mtDNA sequences were obtained. Of these, two commercial Korean native chicken populations (363 birds) were used for investigation of their genetic relationship and breed differentiation. The sequence data classified the chickens into 20 clades, with the largest number of birds represented in clade 1. Analysis of the clade distribution indicated the genetic diversity and relation among the populations. Based on the mtDNA sequence analysis, three selected SNPs from mtDNA polymorphisms were used for the breed identification. The combination of identification probability (Pi) between CCP1 and CCP2 using SNPs from mtDNA and LEI0258 marker polymorphisms was 86.9% and 86.1%, respectively, indicating the utility of these markers for breed identification. The results will be applicable in designing breeding and conservation strategies for the Korean native chicken populations and also used for the development of breed identification markers.
Keywords: mtDNA; LEI0258 Marker; Discrimination; Korean Native Chicken


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