Abstract
Korean Ogol chicken has been registered as a natural monument in Korea and regarded as a valuable genetic resource for the world. As an initial step to investigate the genetic structures of this breed, phylogenetic analysis and calculation of genetic diversities have been performed using mitochondrial DNA (mtDNA) sequence variations. A total of 31 Korean Ogol chicken was grouped into four haplotypes and the large haplotype was represented in 12 individuals. The unrooted neighbor-joining tree indicates that the Korean Ogol chicken shared three (A to C) major chicken lineages representing the high genetic variability of this breed. These results can be used for making the breeding and conservation strategies for the Korean Ogol chicken.
Highlights
There have been two hypotheses for the origins of the current domestic chicken
Along with mitochondrial DNA (mtDNA) polymorphism, microsatellite markers were investigated in chicken for delineating the breed structures and phylogenetic relationships with other breeds for the conservation perspectives (Hillel et al, 2003)
Analysis of 31 mitochondrial sequences from Korean Ogol chicken identified a total of 18 nucleotide changes grouped into four haplotypes
Summary
There have been two hypotheses for the origins of the current domestic chicken. One is monophyletic origin, mainly contributed by red jungle fowl (Gallus gallus). The other is the multiple origins that the current chicken is formed from several Gallus subspecies (Crawford, 1990). This is still controversial and uncertainty has been remained how many subspecies have contributed to the origin of chicken. Along with mtDNA polymorphism, microsatellite markers were investigated in chicken for delineating the breed structures and phylogenetic relationships with other breeds for the conservation perspectives (Hillel et al, 2003). The current phylogenetic status and genetic diversities of Korean Ogol chicken have been investigated in order to understand the genetic basis of this breed and contribute to make better breeding and conservation strategies
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