PCR技术在猪圆环病毒2型检测中的应用

Application of PCR in the Molecular Detection of PCV-2

参照Gen Bank中已发表的猪圆环病毒2型(PCV-2)ORF2基因序列,设计合成1对引物,建立了检测猪场疑似病例临床样本中PCV-2的PCR方法。结果显示,PCV-2的ORF2扩增产物经琼脂糖凝胶电泳,呈现1条630 bp的特异性条带,与预期目的片段大小一致。应用该方法对安徽省3个猪场的30份病料进行了PCV-2检测,结果有9份检测出PCV-2,阳性率为30%。结果表明,该试验建立的PCR方法,是一种快速、灵敏、高效的PCV-2检测技术。

In present study, a PCR method was established based on the ORF2 gene of PCV-2 published in GenBank to detect the PCV-2 in clinical samples from three pig farms. The results showed that a specific band with the anticipated size of 630 bp was obtained. A total of 30 clinical samples from three pig farms were detected for the presence of PCV-2 by the established PCR method and 9 of them were PCV-2 positive, the positive rate was 30%. It was indicated that the PCR method established in this study was a fast, sentitive and efficient strategy for the molecular diagnosis of PCV-2 infection in porcine farms.