ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2016, Vol. 47 ›› Issue (7): 1459-1464.doi: 10.11843/j.issn.0366-6964.2016.07.020

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Development and Application of a Quantitative PCR for Detection of Chicken Infectious Anemia Virus Contamination in Attenuated Vaccines

REN Zhi-hao#,FANG Li-chun#,LUAN Huai-biao,LI Yang,WANG Yi-xin,CUI Zhi-zhong,CHANG Shuang* ,ZHAO Peng*   

  1. (College of Veterinary Medicine,Shandong Agricultural University,Tai’an 271018,China)
  • Received:2016-04-10 Online:2016-07-23 Published:2016-07-23

Abstract:

 To detect the contamination of Chicken infectious anemia virus (CIAV) in attenuated vaccines for poultry,primers and TaqMan probes were designed and synthesized based on the published CIAV genome sequence,and a real-time quantitative PCR method for detecting the CIAV was established by optimizing the reaction conditions.Results analysis showed that the sensitivity of the qPCR may increase detection to 10 copies•μL-1,and the method was approximately 100-fold higher than the sensitivity of the conventional PCR.This detection method had good specificity,and showed no cross-reactions with ALV,REV and MDV genes,the CV (coefficient of variation) of intra-assay and inter-assay were less than 2%,and also showed that the method had the characteristics of better repeatability.In our experiment,a low dosage of 1 EID50•1 000-1 plumes and in 2 positive (5.1%) of 39 samples were detected for CIAV detection from commercial poultry vaccines by qPCR method.In this study,suggesting that this method provides a high sensitivity,strong specificity and better repeatability system for detection of a low dosage CIAV contamination in attenuated vaccines.

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