摘要
通过对山西黄土高原区域羊鼻蝇蛆感染情况调查和病理学研究,以明确该地区羊鼻蝇蛆的感染率和该病的病理变化。春秋两个季节对羊鼻蝇蛆感染情况进行调查,对307例绵羊进行羊头剖检,检查羊鼻蝇蛆病的各龄幼虫感染情况,同时观察病理变化,并采取感染羊的鼻黏膜、咽后淋巴结、脑和肺组织进行病理组织学检查。春季检查157例,鼻蝇蛆感染患羊34例,感染率达22%;秋季检查150例,感染患羊70例,感染率达47%;春秋两季平均感染率为34%。病理变化主要表现为:鼻黏膜出现不同损伤和增生性炎,咽后淋巴结炎性细胞浸润,有的病例出现肺气肿,脑组织水肿。免疫组织化学染色结果表明,检出虫体的羊与未检出虫体羊比较,咽后淋巴结IgA分泌细胞和IgG分泌细胞呈增高趋势,尤其是淋巴结髓质中IgA分泌细胞和IgG分泌细胞明显增多。
To make clear the area of sheep nasal flies maggots infection and the pathological changes of the disease by performing an infection survey and pathology study of Oestrus ovis in the loess plateau area in Shanxi province in spring and autumn.307 samples were dissected to check the infection status of nasal flies maggots larvae,while histopathology methods were used to observe pathological changes.And take the infection of sheep nasal mucosa,retropharyngeal lymph nodes,brain and lung histologic examination.34 cases were detected in 157 sampled cases in spring 22% detection rate;70 in 150 were detected in autumn 47% detection rate;the average infection rate was 34%.The pathological changes are mainly manifested as follows： nasal mucosa appeared different injury and proliferative inflammation,retropharyngeal lymph node inflammatory cells were infiltrated,and some lungs appeared emphysema,brain tissue edema.Immunohistochemistry results showed that compared with no parasite detected cases,the quantity of IgA secretory cells and IgG secretory cells in parasites detected cases was increased in the retropharyngeal lymph nodes of sheep,especially in lymph node medulla.
出处
《中国畜牧兽医》
CAS
北大核心
2011年第8期161-166,共6页
China Animal Husbandry & Veterinary Medicine
基金
国家科技支撑计划课题(2007BAD56B06)
