【摘 要】
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Objectives:Porcine reproductive and respiratory syndrome virus (PRRSV) is an endemic virus in pig farms worldwide and causes persistent or acute infection depending on the viruses and other unknown co
【机 构】
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School of Life Science, Sichuan University, Animal Disease Prevention and Food Safety Key Laboratory
【出 处】
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2013国际猪繁殖与呼吸综合征学术研讨会
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Objectives:Porcine reproductive and respiratory syndrome virus (PRRSV) is an endemic virus in pig farms worldwide and causes persistent or acute infection depending on the viruses and other unknown conditions.Previous study showed that PRRSVs isolated over the world are antigenically and pathologically heterogenic and a fruitful genetic diversity was detected in viral genome,especially in viral Nsp2 gene,in which a remarkable sequence variation,including the nucleotide substitution,deletion and insertion,was widely reported(Zhou,et al 2009,Tian,K.et al,2007).Nsp2 has become the most sensitive region to choose for veterinary clinical diagnostics and the research on PRRSV evolution.In the present study,19 Nsp2 cDNAs of PRRSV isolated in southWestern China were sequenced and analyzed.
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