Korean Journal of Veterinary Service (한국동물위생학회지)

The Korean Society of Veterinary Service (한국동물위생학회)
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Survey of porcine reproductive and respiratory syndrome (PRRS) on pig farms in Andong and Hapcheon region

안동과 합천 지역 양돈장의 돼지생식기호흡기증후군(PRRS) 조사

  • Kang, Hye-Won (Viral Disease Division, Animal and Plant Quarantine Agency) ;
  • Oh, Yooni (Viral Disease Division, Animal and Plant Quarantine Agency) ;
  • Song, Jae-Young (Viral Disease Division, Animal and Plant Quarantine Agency) ;
  • Choi, Eun-Jin (Viral Disease Division, Animal and Plant Quarantine Agency)
  • 강혜원 (농림축산검역본부 바이러스질병과) ;
  • 오윤이 (농림축산검역본부 바이러스질병과) ;
  • 송재영 (농림축산검역본부 바이러스질병과) ;
  • 최은진 (농림축산검역본부 바이러스질병과)
  • Received : 2013.01.10
  • Accepted : 2014.03.13
  • Published : 2014.03.30
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Abstract

Porcine reproductive and respiratory syndrome (PRRS) causes a significant economic loss in the swine industry not only in Korea but also all over the world. Andong and Hapcheon region were selected for Area Regional Control (ARC) programme to reduce the shedding of PRRS virus (PRRSV) and decrease PRRS outbreaks. Before conducting the PRRS ARC, sera of pigs were tested for both antibody using ELISA and antigen using RT-PCR, then phylogenetic classifications was analysed. Pigs of 138/275 (50.2%) in Andong and 352/425 (82.8%) in Hapcheon were seropositive. Also, the RT-PCR results revealed that 27 heads (8.2%) in Andong, 112 heads (22.0%) in Hapcheon were positive for PRRSV antigen. PRRSVs were mainly detected between the ages of 40 to 60 days. PRRSV ORF5 regions were used to determine genetic clusters based on previous report. All PRRSV type I detected in both Andong and Hapcheon were classified as Cluster I. The PRRSV type II isolates in Andong were assorted to Cluster II, whereas the PRRSV type II isolates in Hapcheon were the viruses were unassembled into any cluster except one identified to Cluster III. Phylogenetic analysis indicated that new clusters of PRRSVs type II were prevalent in Hapcheon.

Keywords

References

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