Antimicrobial Susceptibility of Indicator Bacteria Isolated from Chickens in          Southeast Asian Countries (Vietnam, Indonesia and Thailand)

Masaru USUI; Shuhei OZAWA; Hiroyuki ONOZATO; Rikiya KUGE; Yuko OBATA; Tomoko UEMAE; Pham Thi NGOC; Agus HERIYANTO; Tongchai CHALEMCHAIKIT; Kohei MAKITA; Yasukazu MURAMATSU; Yutaka TAMURA

doi:10.1292/jvms.13-0423

Public Health

Antimicrobial Susceptibility of Indicator Bacteria Isolated from Chickens in Southeast Asian Countries (Vietnam, Indonesia and Thailand)

Masaru USUI, Shuhei OZAWA, Hiroyuki ONOZATO, Rikiya KUGE, Yuko OBATA, Tomoko UEMAE, Pham Thi NGOC, Agus HERIYANTO, Tongchai CHALEMCHAIKIT, Kohei MAKITA, Yasukazu MURAMATSU, Yutaka TAMURA

Author information

Masaru USUI
School of Veterinary Medicine, Rakuno Gakuen University, 582 Midorimachi, Bunkyodai, Ebetsu, Hokkaido, Japan
Shuhei OZAWA
School of Veterinary Medicine, Rakuno Gakuen University, 582 Midorimachi, Bunkyodai, Ebetsu, Hokkaido, Japan
Hiroyuki ONOZATO
School of Veterinary Medicine, Rakuno Gakuen University, 582 Midorimachi, Bunkyodai, Ebetsu, Hokkaido, Japan
Rikiya KUGE
School of Veterinary Medicine, Rakuno Gakuen University, 582 Midorimachi, Bunkyodai, Ebetsu, Hokkaido, Japan
Yuko OBATA
School of Veterinary Medicine, Rakuno Gakuen University, 582 Midorimachi, Bunkyodai, Ebetsu, Hokkaido, Japan
Tomoko UEMAE
School of Veterinary Medicine, Rakuno Gakuen University, 582 Midorimachi, Bunkyodai, Ebetsu, Hokkaido, Japan
Pham Thi NGOC
National Institute of Veterinary Research, 86 Truong Chinh, Dong Da, Hanoi, Vietnam
Agus HERIYANTO
National Veterinary Drug Assay Laboratory, Jin Raya Pembangunan, Bogor 16340, Jawa Barat, Indonesia
Tongchai CHALEMCHAIKIT
Department of Veterinary Microbiology, Faculty of Veterinary Science, Chulalongkorn University, Henri Dunant Rd., Pathumwa, Bangkok 10310, Thailand
Kohei MAKITA
School of Veterinary Medicine, Rakuno Gakuen University, 582 Midorimachi, Bunkyodai, Ebetsu, Hokkaido, Japan
Yasukazu MURAMATSU
School of Veterinary Medicine, Rakuno Gakuen University, 582 Midorimachi, Bunkyodai, Ebetsu, Hokkaido, Japan
Yutaka TAMURA
School of Veterinary Medicine, Rakuno Gakuen University, 582 Midorimachi, Bunkyodai, Ebetsu, Hokkaido, Japan

Keywords: antimicrobial resistance, developing countries, indicator bacteria, monitoring, Southeast Asia

JOURNAL FREE ACCESS

2014 Volume 76 Issue 5 Pages 685-692

DOI https://doi.org/10.1292/jvms.13-0423

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Abstract

To determine the prevalence of indicator bacteria resistant to antimicrobials among poultry in three Southeast Asian countries (Vietnam, Indonesia and Thailand), we examined the antimicrobial susceptibilities of commensal bacteria isolated from chickens. In total, 125, 117 and 180 isolates of Escherichia coli, Enterococcus faecalis and Enterococcus faecium, respectively, were used to test for antimicrobial susceptibility. Bacterial resistance to antimicrobial treatment was most frequently observed with oxytetracycline with a prevalence of 73.6% (E. coli), 69.2% (E. faecalis) and 92.2% (E. faecium). Resistance to fluoroquinolones, which are critically important medicines, was also frequently observed in E. coli (48.8%), E. faecalis (17.9%) and E. faecium (82.8%). The prevalence of indicator bacteria resistant to most of the antimicrobials tested in these countries was higher than those for developed countries. The factors underlying antimicrobial resistance may include inappropriate and/or excessive use of antimicrobials. These results highlight the need for monitoring the emergence and prevalence of antimicrobial resistance in developing countries.

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