Studies on Pasteurella multocida isolated from pneumonic lungs of slaughter pigs

도축돈의 폐렴병소에서 분리한 Pasteurella multocida 에 대한 연구

  • Ahn, Byung-chul (College of Veterinary Medicine, Kyungpook National University) ;
  • Cho, Kwang-hyun (Kyungpook Animal Health Experimental Institute) ;
  • Kim, Bong-hwan (College of Veterinary Medicine, Kyungpook National University)
  • Received : 1994.05.10
  • Published : 1994.07.30

Abstract

P multocida was isolated from 80(17.7%) of 450 pneumonic lungs of slaughter pigs. The majority of the biochemical and cultural characteristics of P multocida isolates were identical to those of the reference strains employed. Seventy seven strains(96.3%) among 80 isolates were capsular serotype A while the remaining 3(3.8%) were serotype D. All isolates were very susceptible to ampicillin, ceftiofur, cephalothin, ciprofloxacin and penicillin-G although some of them were resistant to sulfamethoxin and/or streptomycin. Sixty one(76.3%) of all 80 P multocida isolates were dermonecrotic toxin producers. Out of 77 isolates of serotype A and 3 isolates of serotype D, 59(76.6%) and 2(66.7%) were toxigenic, respectively. No difference was noted in dermonecrotic toxigenicity of the isolates in relation to capsular serotypes.