Abstract
The maternally inherited mitochondrial DNA (mtDNA) D–loop region is widely used for exploring genetic relationships and for investigating the origin of various animal species. Currently, domestic ducks play an important role in animal protein supply. In this study, partial mtDNA D–loop sequences were obtained from 145 samples belonging to six South-East Asian duck populations and commercial duck population. All these populations were closely related to the mallard duck (Anas platyrhynchos), as indicated by their mean overall genetic distance. Sixteen nucleotide substitutions were identified in sequence analyses allowing the distinction of 28 haplotypes. Around 42.76% of the duck sequences were classified as Hap_02, which completely matched with Anas platyrhynchos duck species. The neighbor-joining phylogenetic tree also revealed that South-East Asian duck populations were closely related to Anas platyrhynchos. Network profiles were also traced using the 28 haplotypes. Overall, results showed that those duck populations D-loop haplotypes were shared between several duck breeds from Korea and Bangladesh sub continental regions. Therefore, these results confirmed that South-East Asian domestic duck populations have been domesticated from Anas platyrhynchos duck as the maternal origins.
Highlights
Duck is the second most important poultry species for egg, meat, and down feather production in the world
According to the Food and Agriculture Organization of the United Nations (FAO) statistics between 2000 and 2011, the global duck meat production has increased by 1.3 million tons, with the duck meat production in Asia increasing by 3.7% per year during the same period
Korean native ducks (KND) blood samples were collected from the wing veins of ducks held in the Poultry Science Division, National Institute of Animal Science (NIAS), Korea, in 3-ml tubes containing ethylenediaminetetraacetic acid (EDTA)
Summary
Duck is the second most important poultry species for egg, meat, and down feather production in the world. The relationships between black KND and other duck breeds were initially investigated based on partial D-loop sequences (Choi et al, 2014).
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