中文摘要：

[目的]为了解半舍饲与半放牧条件下牛胃肠道寄生虫病的流行情况，于2011年5月到2012年5月间，较为系统地调查了锡林郭勒盟镶黄旗地区三个不同苏木、镇的牛寄生虫病流行情况。[方法]首先针对不同草场、舍饲与半舍饲条件的牛群，先后共采集了708个粪样。然后借助饱和盐水漂浮法、离心沉淀法和麦克马斯特氏虫卵计数的方法，对粪便样品虫卵进行定性和定量检查。[结果]表明，该地区牛群胃肠道寄生虫总感染率为44．92％。根据虫卵形态特征初步鉴定出9种虫卵，分别隶属于3门3纲3目5科和9属，未检查到吸虫。比较分析了不同地区和不同草场类型牛群的胃肠道寄生虫感染情况。[结论]不同草场类型的牛胃肠道寄生虫感染率有显著性差异（P〈0．01）。

英文摘要：

[Objective]In order to realize the prevalence of cattle gastrointestinal parasitic disease in the condition of semi-feeding and semi nomadic, some cattle in three different areas of XiangHuangQi were conveyed during may 2011 and may 2012. [Method]A total of 708 fecal samples were collected from different meadow and different breeding environment,then detected the parasitic eggs by flotation method and sedimentation methods,the eggs were quantified by the standard McMaster egg counting technique. IResult]The results showed that the prevalence of helminthes was 44.92 % ,according to the preliminary identification of morphological characteristics of eggs, 9 species were identified attributed to 3 phyla,3 classes, 3 orders,5 families and 9 genera, respectively. However,trematode eggs were not found in all of fecal samples. [Conclusion]The infection rate of different types of meadow had significant difference （P〈0. 01） through comparison and analysis.