DOI QR코드

DOI QR Code

Serotype and antimicrobial susceptibility of Actinobacillus pleuropneumoniae isolates from pigs in Korea

돼지에서 분리한 Actinobacillus pleuropneumoniae의 혈청형 분포 및 항생제 감수성

  • Jung, Ji-Youl (Epidemiology Division, Animal, Plant and Fisheries Quarantine and Inspection Agency) ;
  • Jang, Hyun (Komipharm International)
  • 정지열 (농림수산검역검사본부 역학조사과) ;
  • 장현 (코미팜 중앙연구소)
  • Received : 2012.02.26
  • Accepted : 2012.09.13
  • Published : 2012.09.30

Abstract

Actinobacillus (A.) pleuropneumoniae is the causative agent of pleuropneumonia which is one of the most important respiratory diseases in pigs worldwide. A total of 32 A. pleuropneumoniae isolates from diseased pigs during 2008 to 2010 were serotyped by polymerase chain reaction method. The susceptibility of the isolates to 13 antimicrobial agents were determined by disk diffusion test. In all the 32 isolates examined in this study, serotype 5 (16 isolates: 50%), 1 (7 isolates: 21.9%), 2 (5 isolates: 15.6%) and 12 (1 isolate: 3.1%) were found. Of all tested antimicrobial agents, resistance to oxytetracycline was found in 96.9% of isolates, followed by resistance to amikacin (81.2%), neomycin (68.7%), kanamycin (53.1%), penicillin (50.0%), gentamicin (43.7%), florfenicol (25.0%), ampicillin (18.7%), colistin (9.4%), trimethoprim/sulfamethoxazole, ceftiofur (8.3%), amoxicillin/clavulanic acid (3.1%) and enrofloxacin (0%). Oxytetracycline or florfenicol-resistant isolates were examined for the presence of resistance gene. Among the 31 oxytetracycline-resistant isolates, tetB, tetH and tetO genes were detected in 22 (71%), 8 (26%) and 1 (3%) isolates, respectively. The floR genes were detected in 8 (100%) of the 8 florfenicol-resistant A. pleuropneumoniae isolates.