摘要
为了解通辽市犊牛咳喘病主要病原牛传染性鼻气管炎病毒(IBRV)、牛病毒性腹泻病毒(BVDV)、多杀性巴氏杆菌(Pasteurella multocida,Pm)的感染情况,对 7 个旗县区 213 家养殖场户的产犊及咳喘发病情况进行了调查,采集 400 份咳喘犊牛血清样品进行了ELISA抗体检测.结果显示:犊牛咳喘病病原感染率为10.21%,IBRV、BVDV和Pm的抗体阳性率分别为 26.50%、19.25%、33.50%;不同旗县区的IBRV、BVDV和Pm抗体阳性率分别为8.33%～41.79%、10.26%～32.26%和17.95%～46.77%;IBRV在秋、冬两季抗体阳性率较高,分别为 32.22%和 30.08%,BVDV在春、冬两季抗体阳性率较高,分别为 19.72%和 22.56%,Pm在秋、冬两季抗体阳性率较高,分别为 36.67%和 39.85%;单一感染率为 41.00%,混合感染率为 18.00%,其中二重感染率为 15.75%,以IBRV+Pm混合感染为主,三重感染率为 2.25%.结果表明:IBRV、BVDV、Pm是导致犊牛咳喘病的重要病原,其流行呈现地区和季节性差异.建议养殖场户根据本地区病原的流行情况和季节特征,对犊牛咳喘病进行科学合理防控.
Abstract
In order to investigate the infection of major pathogens causing cough and asthma in calves in Tongliao City,including infectious bovine rhinotracheitis virus(IBRV),bovine viral diarrhea virus(BVDV)and Pasteurella multocida(Pm),calves and the occurrence of cough and asthma in 213 farms/households in 7 banners(counties or regions)were investigated,400 serum samples from infected calves were detected by ELISA.The results showed that the infection rate of cough-asthma pathogens was 10.21%,and the antibody positivity rates of IBRV,BVDV and Pm were 26.50%,19.25%and 33.50%,respectively;and the rates were 8.33%-41.79%,10.26%-32.26%and 17.95%-46.77%,respectively in different banners(counties or regions);specifically,the antibody positivity rates of IBRV were high in falls and winters,32.22%and 30.08%,respectively,those of BVDV were high in springs and winters,19.72%and 22.56%,respectively,and those of Pm were high in falls and winters,36.67%and 39.85%,respectively;the single and mixed infection rates were 41.00%and 18.00%,respectively,in which the double infection rate was 15.75%,mainly contributed by IBRV+Pm,and the triple infection rate was 2.25%.In conclusion,IBRV,BVDV and Pm contributed to cough and asthma of calves as major pathogens,depending on regional and seasonal differences.Farms/households were recommended to scientifically and rationally prevent and control the disease based on local pathogen prevalence and seasonal characteristics.
基金项目
内蒙古自治区科技创新引导奖励资金项目(TLCXYD202102)
维普
万方数据