关键词: 鲁西黄牛, 遗传多样性, 聚类分析

Abstract: A total of 87 individuals of Luxi cattle from Juancheng County and Liangshan County, Shangdong Province, were sampled by simple random sample in typical colony. Twenty one blood proteins and enzymes loci were detected by polyacrylamide gel electrophoresis (PAGE) and starch gel electrophoresis(SGE). In the meantime, the data of 7 loci of 13 cattle populations in China and other countries were collected and phylogeny relationships were studied. The results showed that: 9 out of 21 loci were polymorphism (42.86%); the level of genetic variation in Luxi cattle population was relatively high, the mean hoterozygosity was 0.1416. The Luxi cattle have a close phylogeny relationships with the cattle populations of east and south of Asia and this confirms further the facts that Luxi cattle are the cross breed between the Bos taurus and Bos indicus in China, but it is not possible of having blood lineage of Bali cattle in Luxi cattle. Now the size of breeding population in Luxi cattle should be enlarged to maintain the genetic diversity level of population.

Key words: Luxi cattle, Genetic diversity, Cluster analysis