Genetic analysis of Thai cattle reveals a Southeast Asian indicine ancestry
Résumé
Cattle commonly raised in Thailand have characteristics of [i]Bos indicus[/i] (zebu). We do not know when or how cattle domestication in Thailand occurred, and so questions remain regarding their origins and relationships to other breeds. We obtained genome-wide SNP genotypic data of 28 bovine individuals sampled from four regions: North (Kho-Khaolampoon), Northeast (Kho-Isaan), Central (Kho-Lan) and South (Kho-Chon) Thailand. These regional varieties have distinctive traits suggestive of breed-like genetic variations. From these data, we confirmed that all four Thai varieties are [i]Bos indicus[/i] and that they are distinct from other indicine breeds. Among these Thai cattle, a distinctive ancestry pattern is apparent, which is the purest within Kho-Chon individuals. This ancestral component is only present outside of Thailand among other indicine breeds in Southeast Asia. From this pattern, we conclude that a unique [i]Bos indicus[/i] ancestor originated in Southeast Asia, and native Kho-Chon Thai cattle retain the signal of this ancestry with limited admixture of other bovine ancestors.
Domaines
Biologie animale
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Wangkumhang_etal_2015_genetic_analysis_{3A9242AF-488C-428A-AF00-BD0157B499B9}.pdf (7.21 Mo)
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