山东地区规模化牛场三种常见疫病的流行病学研究

Epidemiological Investigation of Three Common Diseases in Large Scale Cow Farms in Shandong Province

[目的]为弄清山东地区规模化牛场三种常见疫病的流行病学特点。[方法]2015年1月到2015年6月从山东省部分地区20个规模化牛场随机采集420份血清样品,包括种牛血清41份、奶牛血清278份、肉牛血清101份,利用ELISA方法检测牛病毒性腹泻、牛传染性鼻气管炎及牛副结核病三种常见疫病抗体水平,20个牛场均未免疫上述三种传染病疫苗。检测[结果]表明,在山东地区牛场中,这三种传染病普遍存在感染,其中病毒性腹泻病毒抗体场阳性率为65%,个体平均阳性率为52.62%;牛传染性鼻气管炎病毒gE抗体场阳性率为55%,个体平均阳性率为23.33%;牛副结核分支杆菌抗体场阳性率为10%,个体平均阳性率为2.14%。[结论]通过本次流行病学调查,进一步了解三种常见传染病在山东地区不同类型牛场的流行情况,对山东地区牛场疫情预测及疫病防控起到一定的指导作用。

420serum samples were randomly collected from 20 scale cow farms from some regions of Shandong province during January to June in 2015,which included 41 breeding cattle serum samples,278 dairy cattle serum samples and 101 beef cattle serum samples.The antibody level of bovine viral diarrhea,infectious bovine rhinotracheitis and bovine paratuberculosis,which are three common diseases,were detected by ELISA and none of the 20 scale cow farms had been vaccinated with the three types of vaccines which are mentioned above.The results showed that the three types of infectious diseases above were widespread in cow farms in Shandong province.The positive rate of bovine viral diarrhea virus（BVDV）antibody was 65%,and the individual average positive rate was 52.62%.The positive rate of infectious bovine rhinotracheitis（IBR）antibody was 55%,and the individual average positive rate was 23.33%.The positive rate of MAP antibody was 10%,and the individual average positive rate was 2.14%.Through the epidemiological investigation,we could further understand the epidemic situation about the three types of common infectious diseases in large scale cow farms in Shandong province.It also played a guiding role in forecasting epidemic,preventing and controlling diseases of the cow farms in Shandong province.