河南省猪瘟流行现状调查及净化措施研究

CSF epidemiology of institution in Henan province

对25个猪场191头疑似猪瘟病猪进行流行病学调查,病理剖检,兔体接种试验及反转录多聚酶链反应(RT-PCR)检测,发现仔猪猪瘟阳性检出率平均为77.4%,并呈快速上升趋势。RT-PCR法检测猪瘟快速、准确。调查显示我省猪瘟流行和发病出现一些新的特点,疫情呈蔓延和增加的趋势。对5个猪瘟污染猪场实行定期检测,淘汰带毒猪,培育健康无猪瘟带毒的种猪群和后备种猪群为主,制定合理的免疫程序,采取同步防治其他疾病的猪瘟综合防治措施,取得了很好的效果。

Currently, there is a high rate of occurrence of piglet Classical Swine Fever（CSF） on most pig farms in Henan Province, posing a great danger to the pig industry province--wide, especially to piglets with high rates of morbidity. To effectively control the spread of the disease in the province, a survey of 191 piglets suspected of pseudo--rabies on 25 pig farms was conducted. The survey showed that most of the examined piglets were CSFV--infected, an average of 77.4% positive. The breeding pig could be the carrier of theCSF virus, which infected piglets through sows during pregnancy or lactation. Breeding pigs had a previous infection. Unvaccinated pigs often got sick and died by the herd on the privately owned farms. Mixed infections characterized the epidemiology of CSF in Henan Province over recent years. Large pig farms had a lower rate of morbidity than medium and small ones. Investigation results showed a tend- ency of spread of CSF in Henan Province. Comprehensive measures were taken on 5 CSFV infected farms with satisfactory results achieved.