Survey And Analysis Of Antibody Of CSF,O-FMD And PRRS In Fuyang From 2015 To 2021

Classical swine fever(CSF),foot-and-mouth disease(FMD),and porcine reproductive and respiratory syndrome(PRRS),are important diseases that have an influence on the development of our country’s hog production.Which are overtaxing the the prevention and control of animal diseases for a long time,This would deal a potentially catastrophic blow to the pig farms and free-range farmers.In order to understand the prevention,control of above infectious diseases in recent years in Fuyang,this thesis use Enzyme-linked immunosorbent assay(ELISA)to survey and analysis the antibodies of CSF,O-FMD and PRRS,to provide a reference for the prevention and control of swine infectious diseases in Fuyang.This thesis collected 14,559 blood samples from 8 counties in Fuyang from 2015 to 2021,to survey and analysis the antibodies,and the results were shown below.(1)The average positive rates of CSF,O-FMD,and PRRSV antibodies in Fuyang were92.73%、92.05%、88.84%.(2)The antibody qualification rate of CSF,O-FMD,and PRRSV in large-scale farms were 93.15%、92.99%、90.33%,and the antibody qualification rates of in rural farmers were90.87%、88.15%、82.74%.In the analysis of variance,the antibody qualification rates of CSF,O-FMD and PRRS were no significant differences(P>0.05),between pig farms and free-range farmers.(3)After the cancellation of compulsory immunization for CSF and PRRS in 2017,the pass rate of CSF antibody still Maintained a high level(more than 91%).The pass rate of PRRS antibody was falling.In 2021,the antibody qualification rate was the lowest level(83.08%),in recent years.In conclusion,the antibody qualification rate of the above three types of pig infectious disease are higher than National Animal Disease Control Programme.The antibody qualification rate of large-scale farms’ is higher than rural farmers’,but there were no significant differences.After the cancellation of compulsory immunization,the immune effect of CSF still maintains a high level,while PRRS shows a downward trend,and it is necessary to strengthen the prevention and control of the disease.