广东从化无规定马属动物疫病区龙门缓冲区猪日本脑炎免疫效果监测及分析

Monitoring and Analysis on Immunity Efficacy of Swine Japanese Encephalitis in Longmen Buffer Zone of The Specific Equine Disease-free Zone in Conghua, Guangdong

为了解广东从化无规定马属动物疫病区龙门缓冲区猪日本脑炎的免疫效果,指导该县日本脑炎的免疫工作,采用猪乙型脑炎病毒ELISA抗体检测试剂盒对从龙门缓冲区已免疫日本脑炎疫苗的8个猪场采集的240份血清进行了猪日本脑炎抗体的检测与分析。结果显示,龙门缓冲区猪日本脑炎免疫抗体整体阳性率为92.92%;种猪的抗体阳性率水平高于商品肉猪,但差异不显著;良好饲养条件下猪群的抗体阳性率水平高于中等饲养条件下的猪群,但差异不显著。试验说明猪日本脑炎疫苗取得良好的免疫效果,能产生较强的保护力,对日本脑炎应坚持疫苗预防为主的防控措施。

In order to know about immunity efficacy of swine Japanese encephalitis in Longrnen buffer zone of the specific equine disease-free zone ofConghua, Guangdong, and to guide the Japanese encephalitis virus （JEV） vaccine immunization in that county, 240 serum samples from swine, which had been immunized with JEV vaccine, were collect- ed from 8 swine farms for detection of JEV antibodies using ELISA kit used to detect the antibody against swine JEV. The results showed that 92.92% of total positive rate of immune antibody in samples collected from 8 swine farms in Longrnen buffer zone; the antibody positive rate of breeding swine was higher than porker＇s, but the difference was not significant; the antibody positive rate of swine fed under good feeding conditions was higher than those fed under middle feeding conditions, but the difference was not significant. The test showed that JEV vaccine had good immunological efficacy, and could provide strong protection for swine, So we can draw the conclusion that Japanese encephalitis should be prevented by JEV vaccine.