Monitoring of antimicrobial resistant bacteria from animal farm environments in Korea

Young Il Kwon, Tae Woon Kim, Hae Yeong Kim, Hee Chang Yun, Hyo Sun Kwak, Gun Jo Woo, Yun Hee Chung

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


The kinds and quantity of antimicrobial agents used for cattle (animal industry) may be considerable, suggesting the possibility that pathogenic bacteria which cannot be extirpated by the existing antimicrobial agents could appear. Ten cattle, pig and chicken farms, respectively, were randomly selected from 5 provinces in Korea and the samples were collected from excrement, manure, underground water, farmers' hands and the neighboring environment. A total of 299 samples were examined and 197 of Escherichia coli, 13 of Campylobacter jejuni/coli, 223 of Enterococcus faecium/faecalis and 42 of Staphylococcus aureus isolates were collected. All isolates were screened for antimicrobial resistance: 69.4% of E. coli (137/197 strains), 78.6% of S. aureus (33/42 strains), and 82.1% of E. faecium/faecalis (183/223 strains) were resistant to one antimicrobial agent and all of C. jejuni/coli isolates showed the resistance to one antimicrobial agent. Meanwhile, the multiple resistance ratio for more than 4 lines of antimicrobial agent was 19.2% of E. coli (38/197 strains), 11.9% of S. aureus (5/42 strains), 15.4% of C. jejuni/coli (2/13 strains) and 6.2% of E. faecium/faecalis (14/223 strains). The antimicrobial resistance ratio of bacteria isolated from the cattle farm showed lower than that of bacteria isolated from the pig or chicken farm, which might be related to the quantity of antimicrobial agents consumed. And one strain of vancomycin resistant E. faecium (VREF) were isolated from the excrement of chicken and stream, respectively. Generally, the ratio of VREF collected in animal farm environments is lower than that of VREF collected in medical environment.

Original languageEnglish
Pages (from-to)17-25
Number of pages9
JournalKorean Journal of Microbiology and Biotechnology
Issue number1
Publication statusPublished - 2007 Mar


  • Antimicrobial resistant bacteria
  • Multi-drug resistant

ASJC Scopus subject areas

  • Biotechnology
  • Microbiology
  • Applied Microbiology and Biotechnology


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