西藏家畜三种绦虫蚴病感染情况的调查

Investigation of infectious prevalence of major metacestodes in livestock in Tibet

采用剖检法检查西藏五县147只山羊、118只绵羊、114头牦牛、88头黄牛内脏器官、网膜、肠系膜、脑等组织器官,采集寄生虫幼虫,调查西藏家畜主要带科中绦期幼虫(细颈囊尾蚴、棘球蚴、脑多头蚴)的感染情况和危害程度。结果显示,山羊细颈囊尾蚴、棘球蚴、脑多头蚴的总体感染率分别为46.94%、4.08%、0,绵羊分别为62.77%、13.83%、4.26%;牦牛棘球蚴、脑多头蚴的感染率分别为15.79%、2.63%,黄牛的感染率分别为4.55%、0,说明绵羊更易感脑多头蚴;截至目前暂未在西藏发现山羊感染脑多头蚴;牦牛感染率幼畜与成年畜间差异极显著(P<0.01),说明幼畜更易感。结果表明,西藏家畜这三种绦虫蚴病感染强度仍很高,需开展深入研究,加强寄生虫病防控工作。

The internal organs,greater omentums,mesenteries and the brains of 147 goats,118sheep,114 yaks and 88 cattle in 5counties of Tibet were inspected to investigate the prevalence of three major metacestodes(Cysticercus tenuicollis,Coenurus cerebralis,and hydatid cyst)in livestock in Tibet.The results showed that the goats' prevalence of C.tenuicollis,hydatid cyst and C.cerebralis was 46.94%,4.08%,and 0,respectively,and the sheep's was 62.77%,13.83%,and 4.26%,respectively.The yaks' prevalences of hydatid cyst and C.cerebralis was 15.79%and 2.63%,respectively,and the cattle's prevalence of hydatid cyst and C.cerebralis was 4.55%and 0,respectively.The sheep's prevalence of C.cerebralis was higher compared with that of goats(P<0.05),indicating the sheep were susceptible to it.Goats infected with it in Tibet have not been reported until now.The young yaks' prevalence was higher compared to that of the adults(P<0.01),indicating the young yaks were susceptible to it.The results indicated that the prevalence of metacestodes is still high,and the study on metacestodes may be needed to do and the prevention and control of parasitosis must be enforced in Tibet.