张家口地区羊消化道线虫感染虫种及感染率的调查

Investigation on Infection Species and Infection Rate of Digestive Nematodes of Sheep in Zhangjiakou

调查张家口地区羊消化道线虫的感染情况,为本地区羊寄生虫的研究与防治提供理论参考。选取张家口坝上地区和坝下地区几个不同饲养方式的养殖场,收集新鲜粪便,采用饱和盐水漂浮法及水洗沉淀法收集虫卵,根据虫卵的形态特征进行鉴别,统计粪样中不同虫卵的感染情况。结果表明,张家口地区羊消化道线虫感染率为43.50%,共检出8种消化道线虫,其中优势虫种为捻转血矛线虫、乳突类圆线虫、食道口线虫和毛圆线虫。

To make out the digestive nematode infection status of sheep in Zhangjiakou and to provide theoretical reference for the study and controlling of sheep parasites,fresh faeces were collected at livestock farms with different feeding systems in Zhangjiakou Bashang area and Baxia area.The faeces were processed by saturation salt floating method and washed precipitat methods to gather nematode eggs.Nematodes were identified by morphological feature of eggs.The infection status of different eggs in fecal samples was analyzed.Infection rates of sheep digestive nematodes were 43.50%in Zhangjiakou.There were 8 species,dominant species of which were Haemonchus contortus,Bunostomum,Oesophagostomum and Trchostrongylus.