Wangkumhang Pongsakorn, Wilantho Alisa, Shaw Philip J, Flori Laurence, Moazami-Goudarzi Katayoun, Gautier Mathieu, Duangjinda Monchai, Assawamakin Anunchai, Tongsima Sissades
Genome Technology Research Unit, National Center for Genetic Engineering and Biotechnology , Pathum Thani , Thailand.
Medical Molecular Biology Research Unit, National Center for Genetic Engineering and Biotechnology , Pathum Thani , Thailand.
PeerJ. 2015 Oct 27;3:e1318. doi: 10.7717/peerj.1318. eCollection 2015.
Cattle commonly raised in Thailand have characteristics of Bos indicus (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 Bos indicus 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 Bos indicus ancestor originated in Southeast Asia, and native Kho-Chon Thai cattle retain the signal of this ancestry with limited admixture of other bovine ancestors.
泰国常见饲养的牛具有瘤牛（黄牛）的特征。我们不知道泰国牛的驯化是何时以及如何发生的，因此关于它们的起源以及与其他品种的关系仍存在疑问。我们获得了从泰国四个地区采样的28头牛个体的全基因组SNP基因型数据：北部（科考兰蓬）、东北部（伊桑）、中部（科兰）和南部（春蓬）。这些地区品种具有独特的特征，表明存在类似品种的遗传变异。从这些数据中，我们证实所有四个泰国品种都是瘤牛，并且它们与其他印度牛品种不同。在这些泰国牛中，一种独特的祖先模式很明显，在春蓬个体中最为纯正。这种祖先成分仅在东南亚其他印度牛品种中存在于泰国境外。基于这种模式，我们得出结论，一个独特的瘤牛祖先起源于东南亚，而本地的春蓬泰国牛保留了这种祖先的信号，与其他牛祖先的混合有限。
