Studies on Exudative Epidermitis in Pigs: III. Susceptibility to Antibiotics of Staphylococcus hyicus subsp. hyicus

Park, Cheong-kyu; Kang, Byong-kyu

Korean Journal of Veterinary Research 1987;27(2):215-221.

¹Department of Veterinary Medicine, College of Agriculture, Kyungpook National University
²Department of Veterinary Medicine, College of Agriculture, Chonnam National University

돼지 삼출성표피염에 관한 연구(硏究) : III. Staphylococcus hyicus subsp. hyicus의 항균제(抗菌劑)에 대한 감수성(感受性)

박청규¹, 강병규²

¹경북대학교 농과대학 수의학과
²전남대학교 농과대학 수의학과

Abstract

A total of 204 strains of Staphylococcus hyicus subsp. hyicus isolated from piglets suffering from exudative epidermitis and healthy pigs were tested for antibiotic susceptibility. The growth of all isolates of Staph. hyicus subsp. hyicus tested was inhibited by cloxacillin(Cx) at a concentration of $0.8{mu}g/ml$ and by cefazolin (Cf) at a concentration of $0.4{mu}g/ml$, and by gentamicin and methicillin at a minimum inhibitory concentration of $3.2{mu}g/ml$. Of total isolates obtained from the diseased and healthy pigs, 69.6% were resistant to penicillin G, 53.4% to tetracycline, 11.8% to kanamycin and 0.5% to chloramphenicol, with considerable variations among farms in the occurrence of resistant strains and resistance patterns to the drugs. By application of Cx or Cf which was active to the organism, piglets exposed to infection were successfully protected from the disease, but piglets suffering from already severe exudative epidermitis did not respond to treatment.