Xiangxi Tujia and Miao Autonomous Prefecture is located in western Hunan province with abundant pastures,suitable for husbandry.However,parasitic diseases become an obstacle for goat industry development.In the research,based on parasite damages,epidemic variety and characters,some prevention measures were proposed,as follows：improving goat raising and management,rotation grazing,reinforcement of disinfection and quarantine,and regular parasite expelling,providing references for goat farming in Xiangxi.
为分析黑斑蛙裂头蚴种系发育关系,本研究利用PCR对黑斑蛙裂头蚴湖南省分离株线粒体DNA烟酰胺腺嘌呤二核苷酸(NADH)脱氢酶亚单位5基因(nad5)部分序列进行扩增和测序,分析其遗传变异情况。并利用软件Clustal X 2.0对其序列进行分析,研究黑斑蛙裂头蚴与其它绦虫的种群遗传关系。测序结果显示,所扩增的nad5部分序列长度一致,均为510 bp,湖南省各分离株之间相应序列的相似性在97%以上,湖南分离株与基因库中其它裂头蚴nad5序列的相似度均低于89%。由于黑斑蛙裂头蚴nad5序列种内相对保守,种间差异较大,因此可以作为黑斑蛙裂头蚴种间遗传变异研究的分子标记,从而为黑斑蛙裂头蚴的分子流行病学和进一步的分类鉴定奠定了基础。
