Phylogenetic Relationship among Seventeen Pig Breeds Analysed by Principal Component Analysis Based on Blood Groups and Biochemical Polymorphisms

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Abstract
Principal component analyses based on the gene frequencies in blood groups and biochemical polymorphisms were carried out to make clear the phylogenetic relationship among 17 pig breeds (Landrace, Large White, Duroc, Hampshire, Middle Yorkshire, Berkshire, Hypor, Meishan, Jinhua, Min, Beijing Black, Taoyuan, Short-ear, Ohmini, Göttingen, Pitman-Moore and CLAWN-mini) . The 17 pig breeds were thoroughly separated into the two groups by the 1st component, and the scores were plus in the 8 Asian pig breeds and minus in the 9 European-American pig breeds including Beijing Baack. From the 2nd and 3rd components, it was clarified that there were the three sub-groups (Meishan, Jinhua, Ohmini and Taoyuan; Min and Short-ear; Göttingen) among the Asian group. Among the European-American group, Landrace, Hypor and Duroc were situated at a short distance from the other 6 breeds.

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