[ Objective] The paper was to study the genetic background of four unique types of fragrance pigs in China. [ Method ] Using 27 pairs of micmsatellite loci jointly recommended by Food and Agricultural Organization （...[ Objective] The paper was to study the genetic background of four unique types of fragrance pigs in China. [ Method ] Using 27 pairs of micmsatellite loci jointly recommended by Food and Agricultural Organization （FAO） and International Society for Animal Genetics （ISAG）, we detected the genotypes of 200 fragrance individuals belonging to four types （Jiuyang fragrance pig, Jianbai fragrance pig, Cangjiang fragrance pig and Huangjiang fragrance pig）, and analyzed their inter-and intra-breed genetic variations. Clustering analysis was also conducted using neighbor-joining （NJ） method and unweighted pair-group method with arithmetic mean （UPGMA）. [ Result] The genetic relationship between Congiiang fragrance pig and Huangjiang fragrance pig was the closest, followed by the ge- netic relationship between Jiuyang fragrance pig and Jianbai fragrance pig; the genetic distance between Jianbai fragrance pig and Huangjiang fragrance pig was the farthest, which was consistent with their geographic distribution, ecological environment and body physical characteristics. Clustering resuhs showed that Jiuyang fragrance pig and Jianbai fragrance pig clustered into one class, while Congjiang fragrance pig and Huangjiang fragrance pig clustered into another class. [ Conclu- sion] The study laid the foundation for quantitative trait loci positioning of good genes of these breeds and implementation of genetic marker-assisted selection.展开更多
文摘[ Objective] The paper was to study the genetic background of four unique types of fragrance pigs in China. [ Method ] Using 27 pairs of micmsatellite loci jointly recommended by Food and Agricultural Organization （FAO） and International Society for Animal Genetics （ISAG）, we detected the genotypes of 200 fragrance individuals belonging to four types （Jiuyang fragrance pig, Jianbai fragrance pig, Cangjiang fragrance pig and Huangjiang fragrance pig）, and analyzed their inter-and intra-breed genetic variations. Clustering analysis was also conducted using neighbor-joining （NJ） method and unweighted pair-group method with arithmetic mean （UPGMA）. [ Result] The genetic relationship between Congiiang fragrance pig and Huangjiang fragrance pig was the closest, followed by the ge- netic relationship between Jiuyang fragrance pig and Jianbai fragrance pig; the genetic distance between Jianbai fragrance pig and Huangjiang fragrance pig was the farthest, which was consistent with their geographic distribution, ecological environment and body physical characteristics. Clustering resuhs showed that Jiuyang fragrance pig and Jianbai fragrance pig clustered into one class, while Congjiang fragrance pig and Huangjiang fragrance pig clustered into another class. [ Conclu- sion] The study laid the foundation for quantitative trait loci positioning of good genes of these breeds and implementation of genetic marker-assisted selection.
