山东省东营市部分育肥羊场户4种主要疫病血清学调查

Serological Investigation on Four Major Animal Diseases in Fattening Sheep Farms/Households in Dongying City,Shandong Province

为掌握东营市育肥羊场户O型口蹄疫(FMD-O)、小反刍兽疫(PPR)的免疫情况及副流感、支原体肺炎的流行现状,采用ELISA方法对2020—2022年在全市5个县(区)采集的血清样品开展了O型口蹄疫病毒(FMDV-O)、小反刍兽疫病毒(PPRV)、山羊副流感病毒3型(CPIV3)和肺炎支原体(Mo)血清学调查。结果显示:FMDV-O、PPRV、CPIV3、Mo的个体阳性率分别为90.98%、90.62%、62.33%、80.94%,场群阳性率分别为88.24%、92.16%、78.57%、92.86%;FMDV-O和PPRV抗体阳性率呈先下降后上升的波动趋势,2022年CPIV3和Mo的场群阳性率和个体阳性率较前2年低。结果说明:东营市FMD-O和PPR免疫效果较好,疫情发生风险较低,CPIV3和Mo感染普遍且较为严重,需要重视其危害并加强监测,降低疫病对养殖效益的影响,同时实行以春秋防集中监测为主、依生产批次监测为辅的灵活监测方式,提高免疫效果监测的有效性。

In order to investigate the immunization status of foot-and-mouth disease type O(FMD-O)and peste des petits ruminants(PPR)as well as the prevalence of parainfluenza and Mycoplasma pneumonia in fattening sheep farms/households in Dongying City,serum samples collected from 5 counties(districts)in the city from 2020 to 2022 were tested for foot-and-mouth disease virus type O(FMDV-O),peste des petits ruminants virus(PPRV),goat parainfluenza virus type 3(CPIV3)and Mycoplasma ovipneumoniae(Mo)using ELISA.The results showed that the individual positive rates of FMDV-O,PPRV,CPIV3 and Mo were 90.98%,90.62%,62.33%and 80.94%,respectively,and the ones at farm/group level were 88.24%,92.16%,78.57%and 92.86%,respectively;the antibody positive rates of FMDV-O and PPRV fluctuated with a trend of decreasing followed by increasing,the positive rates of CPIV3 and Mo at both group/farm and individual level were lower in 2022 compared with those in the previous two years.In conclusion,the immunization effect of FMD-O and PPR was good in the city,posing a low risk of disease outbreak,while CPIV3 and Mo were widely and seriously distributed,from which all harm should be concerned with intensive monitoring to reduce the impact of such diseases on breeding benefits,meanwhile,a flexible monitoring mode centering on intensive monitoring in spring and fall and supplemented by monitoring based on production batch should be applied to improve performance of the monitoring.