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Volume 22 Issue 3
Apr.  2012
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Article Contents
YU Fu-song, CHE Yong-liang, JIANG Bin, WU Sheng-hui, LIN Lin, CHEN Shao-ying, LIN Tian-long. Comparison of RT-PCR and DFA methods for detecting classical swine fever virus[J]. Fujian Journal of Agricultural Sciences, 2007, 22(3): 231-234.
Citation: YU Fu-song, CHE Yong-liang, JIANG Bin, WU Sheng-hui, LIN Lin, CHEN Shao-ying, LIN Tian-long. Comparison of RT-PCR and DFA methods for detecting classical swine fever virus[J]. Fujian Journal of Agricultural Sciences, 2007, 22(3): 231-234.

Comparison of RT-PCR and DFA methods for detecting classical swine fever virus

  • Received Date: 2007-04-18
  • Rev Recd Date: 2007-07-15
  • Publish Date: 2007-09-15
  • A pair of primers for RT-PCR to detect the classical swine fever virus (CSFV) were synthesized according to the published genome sequences of CSFV strains.After the RT-PCR method was established and optimized,15 clinic specimens were detected for CSFV by RT-PCR in comparison with the direct immunofluoresence assay (DFA).The result indicated that a 509 bp specifical fragment was obtained from the CSFV vaccine strains by RT-PCR with the sensitivity reaching 10 pg of CSFVRNA.Negative results were obtained from porcine reproductive and respiratory syndrome virus (PRRSV),porcine parvovirus (PPV),pseudorabies virus (PRV) and porcine circovirus Ⅱ (PCV2).The nucleotide sequence homology of RT-PCR products was 95%-99% of the other CSFV strains.The positive detection rate of the 15 clinic specimens reached 66.7% by RT-PCR,as compared to 60.0% by DFA.The two method’s coincidence rate was 80%.These results indicated that the RTPCR method was more sensitive than DFA,and that both methods were suitable for rapid detection of CSFV.
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