鸭源新城疫病毒、鸭瘟病毒和鸭圆环病毒三重PCR检测方法的建立

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为了建立能同时检测鸭源新城疫病毒(DuNDV)、鸭瘟病毒(DPV)和鸭圆环病毒(DuCV)的方法,根据DuNDV、DPV和DuCV基因的保守序列设计了3对特异性引物,预特异扩增DuNDV片段大小为823bp,DPV为576bp和DuCV为338bp。经过反应条件的优化,建立了DuNDV、DPV和DuCV的三重PCR检测方法。该方法特异性好,对鸭的其他病原检测结果为阴性;敏感性高,DuNDV、DPV和DuCV的核酸最低检出限分别为2.59×103、1.12×103、4.67×102拷贝/μL。对180份病料进行检测,结果DuCV阳性10份,阳性率为5.6%;DuNDV阳性1份,阳性率为0.56%。结果表明,建立的多重PCR方法可以应用于DuNDV、DPV和DuCV的临床检测和流行病学调查。
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