Korean Journal of Veterinary Research 1996;36(1):181-186.
Biochemical characteristics and serotypes of Actinobacillus pleuropneumoniae isolated from pneumonic lungs of pigs
Byeong-yeal Jung1, Gil-jae Cho2, Bong-hwan Kim2, Kwang-hyun Cho2
1Veterinary Research Institute
2College of Veterinary Medicine, Kyungpook National University
돼지 폐렴병소에서 분리한 Actinobacillus pleuropneumoniae의 특성에 관한 연구
정병열1, 조길재2, 김봉환2, 조광현2
1수의과학연구소
2경북대학교 수의과대학
Abstract
The present study was conducted to investigate the biochemical and serologic characteristic of Actinobacillus pleuropneumoniae isolated from pneumonic lungs of pigs during the period from January 1992 to April 1993. A pleuropneumoniae was isolated from 17(27.0%) of 63 growing pigs with respiratory signs and 21(6.4%) of 330 pneumonic lungs of slaughtered pigs. The seasonal isolation frequency of A pleuropneumoniae was higher in winter and spring than that in summer or fall. The biochemical and cultural properties of A pleluropneumoniae isolated from the pneumonic lungs of pigs were identical to those of the reference strains used. The isolates were highly susceptible to ampicillin, cephalothin, ceftiofur, ciprofloxacin(MIC : ${leq}0.39{mu}g/ml$) and moderately susceptible to amikacin, chloramphenicol, erythromycin, kanamycin, methicillin, penicillin-G, streptomycin(MIC : 0.78~25IU or ${mu}g/ml$), respectively. Sulfadimethoxine, sulfamerazine, tylosine showed no response to the isolates(MIC : ${geq}100{mu}g/ml$). Among the 38 isolates, 21(55.3%) and 13(34.2%) were resistant to oxytetracycline aid lincomydn, respectively(MIC : ${geq}50IU$ or ${mu}g/ml$). The majority of 38 A pleuropneumoniae isolates were turned out as serotype 2(47.4%) or serotype 5(54.7%) and the remaining 3 isolates were evenly classified to serotype 7, 10 or 12. It was noted A pleuropneumonine serotype 5 isolates were more resistant to oxytetracycline than serotype 2 isolates.
Key Words: Actinobacillus pleuropneumoniae, serotype, antibiotics susceptibility


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