Prevalence of isolated microorganisms and antimicrobial susceptibility from half milk in dairy goats

젖염소 분방 유즙에서 분리한 세균 및 항균제 감수성 조사

  • Yoon, Joon-chul (College of Veterinary Medicine, Chonnam National University) ;
  • Lee, Jeong-chi (Department of Veterinary Nurse and Pets Sciences, Seojeong College) ;
  • Kim, Sang-ki (College of Veterinary Medicine, Chonnam National University) ;
  • Park, Young-seok (Department of Companion and Laboratory Animal Science, Kongju National University) ;
  • Kim, Jong-taek (Department of Veterinary Medicine, Kangwon National University) ;
  • Lee, Chung-gil (College of Veterinary Medicine, Chonnam National University) ;
  • Lee, Chai-yong (College of Veterinary Medicine, Chonnam National University)
  • 윤준철 (전남대학교 수의과대학) ;
  • 이정치 (서정대학 애완동물과) ;
  • 김상기 (전남대학교 수의과대학) ;
  • 박영석 (공주대학교 특수동물학과) ;
  • 김종택 (강원대학교 수의학과) ;
  • 이정길 (전남대학교 수의과대학) ;
  • 이채용 (전남대학교 수의과대학)
  • Accepted : 2004.03.05
  • Published : 2004.03.31


Samples of milk were collected from 425 halves of 216 dairy goats in Chonnam province over a period of January through August 2003. Bacterial isolation was carried out on those samples, and their antimicrobial susceptibility was tested. Bacteria were isolated from 166 milk samples (39.1%), either singly (74.7%) or in combination (25.3%). Of the 220 isolates, Staphylococcus spp. was the most prevalent (82.6%), followed by Streptococcus spp. (2.7%), Corynebacterium spp. (1.8%), Enterococcus spp. (1.8%), and Pasteurella spp. (1.8%). Of the 11 species identified from the 182 isolates of Staphylococcus spp., the most frequent species identified were S. epidermidis (28.6%) followed by S. chromogens (14.8%), S. haemolyticus (12.6%), S. aureus (12.1%), S. capitis (8.2%), S. lentus (8.2%), S. hyicus (4.4%), S. simulans (4.4%), S. caprae (2.8%), S. hominis (2.8%) and S. warneri (1.1%). Antimicrobial sensitivity test revealed that most isolates were highly susceptible to 11 antimicrobial agents (96.4 ~ 80.9%), while most isolates were resistant to penicillin.


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