Journal of Veterinary Clinics (한국임상수의학회지)

The Korean Society of Veterinary Clinics (한국임상수의학회)
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Isolation and Antimicrobial Drug Susceptibility of Mastitic Pathogens from Dairy Cattles with Clinical Mastitis in Gyeongnam South Area

경남 남부지방에서 임상형 유방염의 원인균 분리 및 약제 감수성 시험

  • 김충희 (경상대학교 수의과 대학(경상대학교 농업생명과학원)) ;
  • 김곤섭 (경상대학교 수의과 대학(경상대학교 농업생명과학원)) ;
  • 허정호 (경상남도축산진흥연구소남부지소) ;
  • 정명호 (경상남도축산진흥연구소남부지소) ;
  • 김국헌 (경상남도축산진흥연구소남부지소) ;
  • 조명희 (경상남도축산진흥연구소남부지소) ;
  • 이국천 (경상남도축산진흥연구소남부지소) ;
  • 류재두 (국립수의과학검역원 부산지원) ;
  • 하대식 (경상남도보건환경연구원)
  • Published : 2003.06.01
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Abstract

The present study was conducted to investigate isolation and antimicrobial drug susceptibility of clinical mastitic milking total 610 (897 quaters) dairy cattles from 36 dairy farms in Gyeongnam south area (Cosung, Masan) during the period from March 1999 to August 2002. The results obtained were summerized as follows . 1. Incidence of bacterial infection in four quaters was showed that right anterior quarter was 178(19.8%), right posterior quarter was 292(32.6%), left anterior quarter was 148 (16.2%), and left posterior quarter was 279 (31.1%), respectively. Isolation rate of posterior two quarters was higher 2 times than anterior two quarters. 2. Incidence of double infections of 897 clinical mastitic milk were showed that single infection was 549 (61.2%), double infection was 167(18.6%), triple infection was 9(1%) and no isolation was 172(19.2%). 3. Isolation of infected etiologic bacteria was showed that Streptococci spp., was 267(31%), Staphylococci spp., was 267(41%), S aureus, was 48(5.6%), G(-) bacillus was 126(5.6%), and Corynebactrium spy. was 52(6%), respectively, from total 861 samples. 4. The results of antimicrobial drug susceptibility of all isolates were showed that Streptococci spp., Staphylococci spp., S aureus, (G)(-) bacillus, and Corynebactrium spp. were susceptible to cefuroxime, cefoperazone, amoxicillin, cefazolin, ampicilin, penicillin, gentamicin, erythromycin, cloxacilin, ciprofloxacin, sulfamethoxasole/trimetoprim, teteracyclin, and norfloxacin (> 70%), but some of them were resistant to neomycin, streptomycin colistin, and cephalothin(> 60). 5. The results of drug susceptibility obtained from each farms had different susceptibility, even though, etiological microorganisms were same in each farms.

Keywords

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