Korean Journal of Veterinary Service (한국동물위생학회지)

The Korean Society of Veterinary Service (한국동물위생학회)
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Prevalence of major enteric pathogens in different feeding groups of pig in Korean pig farms

국내 양돈장의 사육구간별 주요 소화기질병 원인체 유병율 조사

  • Jung, Youn-Soo (College of Veterinary Medicine & Animal Disease Intervention Center, Kyungpook National University) ;
  • Park, Yu-Ri (College of Veterinary Medicine & Animal Disease Intervention Center, Kyungpook National University) ;
  • Kang, Dae-Young (College of Veterinary Medicine & Animal Disease Intervention Center, Kyungpook National University) ;
  • Han, Do-Hyun (College of Veterinary Medicine & Animal Disease Intervention Center, Kyungpook National University) ;
  • Yoon, Duhak (Department of Animal Science, Kyungpook National University) ;
  • Jung, Byeong-Yeal (Bacterial Disease Division, Animal and Plant Quarantine Agency) ;
  • Park, Choi-Kyu (College of Veterinary Medicine & Animal Disease Intervention Center, Kyungpook National University)
  • 정윤수 (경북대학교 수의과대학/수의전염병제어센터) ;
  • 박유리 (경북대학교 수의과대학/수의전염병제어센터) ;
  • 강대영 (경북대학교 수의과대학/수의전염병제어센터) ;
  • 한도현 (경북대학교 수의과대학/수의전염병제어센터) ;
  • 윤두학 (경북대학교 축산학과) ;
  • 정병열 (농림축산검역본부 세균질병과) ;
  • 박최규 (경북대학교 수의과대학/수의전염병제어센터)
  • Received : 2016.10.11
  • Accepted : 2016.12.14
  • Published : 2016.12.30
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Abstract

For determining the prevalence of major enteric pathogens, clinical examination and etiological diagnosis were carried out on 75 Korean pig farms. Enteric disease-suspected signs were observed in 90.7% of the farms and the incidence and severity were higher in younger age groups of the pigs. Five of seven pathogens were detected in 375 fecal samples collected from the 75 farms, and the farm-level prevalence of porcine rotavirus group A (PoRVA), pathogenic Escherichia (E.) coli, Lawsonia (L.) intracelluraris, Salmonella spp., and Brachyspira (B.) hyodysenteriae was 54.7%, 54.7%, 16.0%, 10.7% and 2.7%, respectively. PoRVA was extensively infected in suckling and weaning pig groups. The prevalence of pathogenic E. coli was highest in suckling period, and after the period, it exhibited a tendency to decrease. Salmonella spp. and L. intracelluraris were detected in all feeding groups of pigs in a ratio of 1.3~6.7%. B. hyodysenteriae was detected in 1.3~2.7% of growing and fattening pig groups but not detected in suckling and weaning pig groups. At least one or more pathogens were detected in 30.1% of 375 fecal samples. Among these, 25.0% or 5.1% of cases were single or mixed infection. Enteric disease signs of the pigs were significantly co-related with the detection of PoRVA, pathogenic E. coli or Salmonella spp. (P<0.01) but not with L. intracelluraris or B. hyodysenteriae (P>0.05). Conclusively, it will be expected that these data obtained in this study are very useful for subsequent studies and prevention strategies for swine enteric disease in Korean pig farms.

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References

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