广东省东莞市2010—2014年猪伪狂犬病野毒抗体监测与分析

Monitoring and Analysis on Wild Virus Antibody of Porcine Pseudorabies in Dongguan City of Guangdong Province from 2010 to 2014

利用ELISA方法对猪伪狂犬病野毒(g E)抗体进行检测,分析2010—2014年连续5年来自东莞32个镇街820个养猪场点12 108份血清的检测结果。分析发现:2010—2012年,东莞猪伪狂犬病野毒感染程度整体呈下降趋势,2012年阳性率最低(8.37%),2013年开始反弹,2014年达到46.97%;每年各季度均能检出伪狂犬病毒g E抗体,其中2014年第二季度的检出率最高,但在第四季度有所回落。分析认为,2013年后东莞市猪伪狂犬病野毒抗体阳性率上升的原因可能是出现了新变异毒株;定期监测猪群的伪狂犬病毒g E抗体水平,尤其是种猪,及时淘汰阳性猪,仍是控制猪伪狂犬病的重要手段。

In this study, the antibody test results of porcine pseudorabies wild virus （gE） detected with ELISA from 12 108 serum in 820 pig farms of Dongguan City from 2010 to 2014 were analyzed. It was found that the degree of porcine pseudorabies infection in Dongguan City had been declining from 2010 to 2012, and the positive rate was the lowest in 2012（8.37%）. However, it raised again in 2013, and reached to 46.97% in 2014. The porcine pseudorabies antibodies （gE） were detected in each quarter from 2010 to 2014. It was found that the gE antibody positive rate in the second quarter of 2014 was the highest, but was lower in the fourth quarter. It was considered that variant strain of pseudorabies might be the cause of higher positive rate in Dongguan City. It was suggested that the important measures for controlling the porcine pseudorabies were regular monitoring of gE antibody and timely elimination of the positive pigs especially in the breeding pigs.