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2023 Vol.53, Issue 2 Preview Page

Original Article

Reduction in Antimicrobial Resistance Prevalence in Escherichia coli and Enterococcus Species from a Swine Farm in Korea following All-In/All-Out Management
Chang Min Jung12
,
Kyung-Hyo Do2
,
Kwangwon Seo2*
1Onnuri Animals Hospital, Munamgil 16, Dongnam-Gu, Choen-an 31070, Republic of Korea
2College of Veterinary Medicine, Chungbuk National University, Cheongju 28644, Republic of Korea
*vetskw16@cbnu.ac.kr
31 December 2023. pp. 141-149
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Abstract

All-In/All-Out (AIAO) is a management strategy in pig farming where all animals within a specific production group are introduced into a facility at the same time and are subsequently removed together when the production cycle is complete. The aim of this study was to analyzing whether the application of AIAO system in pig farm in Korea affects the reduction of antimicrobial resistance. A total of 60 Escherichia coli (E. coli) and 60 Enterococcus species (spp.) isolates were tested in this study: 30 from “Before application of AIAO”, and “After application of AIAO”. All E. coli and Enterococcus spp. isolates were tested for antimicrobial susceptibility using the disc diffusion test. We found that there were significant decrease of resistance rates to cefoxitin (40.0% to 20.0%), cefepime (20.0% to 0.0%), gentamicin (50.0% to 20.0%), kanamycin (80.0% to 40.0%), sulfisoxazole (73.3% to 40.0%), and trimethoprim-sulfamethoxazole (86.7% to 40.0%) in E. coli, and ampicillin (6.7% to 0.0%), penicillin (53.3% to 40.0%), ciprofloxacin (66.7% to 40.0%), and gentamicin (86.7% to 60.0%) in Enterococcus spp. after the application of AIAO. Through this, we suggest the application of AIAO management system as the decreasing antimicrobial resistance model for pig farms. This could contribute to the development of approaches for research on antimicrobial resistance and its effective management.

Keywords
Swine
Antimicrobial resistance
All-In/All-Out
Escherichia coli
Enterococcus spp.
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Information
  • Publisher :The Korean Society for Microbiology and The Korean Society of Virology
  • Publisher(Ko) :대한미생물학회‧대한바이러스학회
  • Journal Title :JOURNAL OF BACTERIOLOGY AND VIROLOGY
  • Volume : 53
  • No :2
  • Pages :141-149
  • Received Date : 2023-12-03
  • Revised Date : 2023-12-17
  • Accepted Date : 2023-12-20
  • DOI :https://doi.org/10.4167/jbv.2023.53.2.141
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