摘要
为调查了解内蒙古乌审旗地区自然放牧绵羊主要蠕虫病的流行情况,并为当地牧民制定较为可行的驱虫方案,本研究于2009年3月至4月,对乌审旗不同地区的绵羊群进行了蠕虫病流行病学调查,并开展了驱虫效果比较试验。分别从6个采样点随机选取300只绵羊,由直肠采集新鲜粪便,采用饱和盐水漂浮法和离心沉淀法富集虫卵,借助光学显微镜观察进行形态学鉴定,用麦克马斯特氏法进行定量分析,并计算感染率。同时,选取蠕虫感染强度较大的60只绵羊作为试验对象,开展了几种抗寄生虫药物的驱虫效果比较试验。结果表明,乌审旗地区自然放牧绵羊蠕虫病流行情况较为严重,并以混合感染为特点,且与当地的草场类型、气候条件和饲养方式以及用药历史密切相关。总感染率达80.7%,感染优势虫种为线虫。根据虫卵形态特征初步鉴定出13种,分别隶属于2门3纲4目9科和12属。药物驱虫结果表明,伊维菌素皮下注射剂仍显示出强大的驱虫效果,而推荐剂量的阿苯达唑片剂几乎没有驱虫作用。
In order to investigate the prevalence of main helminthiasis of naturally grazing sheep in Inner Mongolia Wushen county and to develop a practical de-worming program for local herdsmen,the epidemiological investigations of helminthiasis and comparative anthelmintic studies were carried out for sheep grazing in different pasture types,climatic conditions and breeding modes,respectively,from March to April 2009.Feacal samples were taken from the rectum of 300 randomly selected sheep from 6 different sampling points,and the eggs were collected by using floating method and centrifugal sedimentation method respectively,and then identified by optical microscope and quantitatively analyzed by using McMaster＇s method.60 naturally helminthes infected sheep were allocated into 6 groups as anthelmintic treatment groups along with a control group containing 10 animals in each group,and were given single or combined anthelmintics to study their de-worming effects comparatively.The results of survey showed that a high prevalence of sheep helminthiasis was existed in Wushen,and characterized by mixed infection with variety of helminthes,closely related to the local pasture types,climatic conditions and breeding modes,as well as related to the medication history.The average infection rate was 80.7% and predominant helminthes were nematodes.According to the preliminary identification of morphological characteristics of eggs,13 species were identified respectively attributed to 2 phyla,3 classes,4 orders,9 families and 12 genera.The results of de-worming experiment showed that the anthelmintic effect of the ivermectin injection possesses strong anti-nematodes activities,however,the recommended dose of albendazole has little effect on helminthes.
出处
《内蒙古农业大学学报（自然科学版）》
CAS
北大核心
2009年第4期20-24,共5页
Journal of Inner Mongolia Agricultural University(Natural Science Edition)
基金
内蒙古自治区高等学校科学研究项目(NJ09057)
关键词
乌审旗
绵羊蠕虫病
流行病学调查
驱虫试验
Wushen county
sheep helminthiasis
epidemiological investigations
de-worming experiment
