Development of a multiplex RT-PCR for the detection of major diarrhoeal viruses in pig herds in China

文献类型： 外文期刊

第一作者： Ding, Guangming

作者： Ding, Guangming;Fu, Yuguang;Li, Baoyu;Chen, Jianing;Liu, Guangliang;Ding, Guangming;Wang, Jianlin;Yin, Baishuang;Sha, Wanli

作者机构：

关键词： diarrhoea; multiplex RT-PCR; swine enteric viruses

期刊名称：TRANSBOUNDARY AND EMERGING DISEASES （ 影响因子：5.005； 五年影响因子：4.622 ）

ISSN： 1865-1674

年卷期： 2020 年 67 卷 2 期

页码：

收录情况： SCI

摘要： The major enteric RNA viruses in pigs include porcine epidemic diarrhoea virus (PEDV), transmissible gastroenteritis virus (TGEV), porcine rotavirus A (PRV-A), porcine kobuvirus (PKV), porcine sapovirus (PSaV) and porcine deltacoronavirus (PDCoV). For differential diagnosis, a multiplex RT-PCR method was established on the basis of the N genes of TGEV, PEDV and PDCoV, the VP7 gene of PRV-A, and the polyprotein genes of PKV and PSaV. This multiplex RT-PCR could specifically detect TGEV, PEDV, PDCoV, PRV-A, PKV and PSaV without cross-reaction to any other major viruses circulating in Chinese pig farms. The limit of detection of this method was as low as 10(0)-10(1) ng cDNA of each virus. A total of 398 swine faecal samples collected from nine provinces of China between October 2015 and April 2017 were analysed by this established multiplex RT-PCR. The results demonstrated that PDCoV (144/398), PSaV (114/398), PEDV (78/398) and PRV-A (70/398) were the main pathogens, but TGEV was not found in the pig herds in China. In addition, dual infections, for example, PDCoV + PSaV, PDCoV + PRV-A, PRA-V + PSaV and PEDV + PDCoV, and triple infections, for example, PDCoV + PRV-A + PSaV and PEDV + PDCoV + PKV, were found among the collected samples. The multiplex RT-PCR provided a valuable tool for the differential diagnosis of swine enteric viruses circulating in Chinese pig farms and will facilitate the prevention and control of swine diarrhoea in China.

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