四川省部分规模猪场伪狂犬病血清流行病学调查
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四川省科技厅应用基础研究项目(2019YJ0560)


Seroepidemiological Investigation on Pseudorabies Virus in Some Scale Swine Farms in Sichuan Province
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    摘要:

    为了解四川省部分规模猪场伪狂犬病病毒(PRV)感染情况和疫苗免疫状况,采用ELISA方法,对四川省川东、川南、川西、川北、川中5个片区的17个规模猪场进行PRV血清流行病学调查。结果显示:采集的1 388份血清样品中,PRV-gB抗体总阳性率为84.51%,PRV-gE抗体总阳性率为15.63%;17个规模猪场中,PRV-gB抗体场阳性率为100%,PRV-gE抗体阳性猪场10个,场阳性率为58.82%;哺乳仔猪、保育猪、育肥猪、经产母猪、种公猪、后备猪PRV-gB抗体阳性率分别为79.52%、71.98%、77.58%、94.29%、88.33%、86.27%,PRV-gE抗体阳性率分别为30.12%、13.74%、21.71%、15.53%、1.67%、10.78%。结果表明,四川省规模猪场伪狂犬病总体免疫效果较好,但部分猪场免疫抗体水平不高,野毒感染情况也较严重,尤其是哺乳仔猪、育肥猪和经产母猪群。结果提示,四川省猪伪狂犬病流行形势仍然严峻,需要继续加强猪伪狂犬病的系统性防控,有计划开展猪群PRV净化。

    Abstract:

    In order to identify the status of infection with pseudorabies virus(PRV)and vaccine immunization in some scale swine farms in Sichuan Province,1 388 serum samples were collected from 17 farms in five regions(Eastern,Southern,Western,Northern and Central Sichuan)and a seroepidemiological investigation was conducted by ELISA. The results showed that the total positive rates of PRV-gB and PRV-gE antibodies at individual level were 84.51% and 15.63%,respectively;the positive rates of PRV-gB and PRV-gE antibodies at farm level were 100% and 58.82%,respectively. For pigs at different growth stages,the positive rates of PRV-gB antibodies in suckling piglets,nursery piglets,fattening pigs,multiparous sows,breeding boars and reserved pigs were 79.52%,71.98%,77.58%,94.29%,88.33% and 86.27%,respectively,and the positive rates of PRV-gE antibodies were 30.12%、13.74%、21.71%、15.53%、1.67%、10.78%,respectively. It was concluded that the overall immunization against PRV received good effect in Sichuan Province,except some farms where the level of immune antibody was unsatisfied and the infection with wild virus was serious,especially for suckling piglets,fattening pigs and multiparous sows. It was indicated that PRV was still severe in Sichuan,which should be systematically prevented and controlled,and PRV purification should be carried out as scheduled.

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周莉媛,陈弟诗,陈斌,邓飞,邱明双,丁梦蝶,邵靓,李丽,卢忠华,徐志文.四川省部分规模猪场伪狂犬病血清流行病学调查[J].《中国动物检疫》编辑部,2021,38(1):8-12.

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  • 在线发布日期: 2020-12-30
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