Factors for Occurrence of Extended-Spectrum β-Lactamase-Producing Escherichia coli in Broilers

Midori HIROI; Shigeyuki MATSUI; Ryoichi KUBO; Natsuko IIDA; Yoshihiro NODA; Takashi KANDA; Kanji SUGIYAMA; Yukiko HARA-KUDO; Norio OHASHI

doi:10.1292/jvms.11-0479

Public Health

Factors for Occurrence of Extended-Spectrum β-Lactamase-Producing Escherichia coli in Broilers

Midori HIROI, Shigeyuki MATSUI, Ryoichi KUBO, Natsuko IIDA, Yoshihiro NODA, Takashi KANDA, Kanji SUGIYAMA, Yukiko HARA-KUDO, Norio OHASHI

Author information

Midori HIROI
Department of Microbiology, Shizuoka Institute of Environment and Hygiene, 4–27–2 Kita-ando, Aoi, Shizuoka 420–8637, Japan
Shigeyuki MATSUI
Shizuoka Prefectural Livestock Institute, Swine and Poultry Research Center, 2780 Nishikata, Kikugawa, Shizuoka 439–0037, Japan
Ryoichi KUBO
Kanto Chemical Co., Inc., Marusan Bldg, 3–11–5 Nihonbashi Honcho, Chuo, Tokyo 103–0023, Japan
Natsuko IIDA
Department of Microbiology, Shizuoka Institute of Environment and Hygiene, 4–27–2 Kita-ando, Aoi, Shizuoka 420–8637, Japan
Yoshihiro NODA
Department of Microbiology, Shizuoka Institute of Environment and Hygiene, 4–27–2 Kita-ando, Aoi, Shizuoka 420–8637, Japan
Takashi KANDA
Department of Microbiology, Shizuoka Institute of Environment and Hygiene, 4–27–2 Kita-ando, Aoi, Shizuoka 420–8637, Japan
Kanji SUGIYAMA
Department of Microbiology, Shizuoka Institute of Environment and Hygiene, 4–27–2 Kita-ando, Aoi, Shizuoka 420–8637, Japan
Yukiko HARA-KUDO
Division of Microbiology, National Institute of Health Sciences, 1–18–1 Kamiyoga, Setagaya, Tokyo 158–8501, Japan
Norio OHASHI
University of Shizuoka, 52–1 Yada, Suruga, Shizuoka 422–8526, Japan

Keywords: antibiotics, broiler, Escherichia coli, extended-spectrum β-lactamase-producing, occurrence

JOURNAL FREE ACCESS

2012 Volume 74 Issue 12 Pages 1635-1637

DOI https://doi.org/10.1292/jvms.11-0479

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Abstract

To clarify the factors for occurrence of extended-spectrum β-lactamase (ESBL)-producing Escherichia coli in broilers, two flocks (1 day of age) fed a diet with or without antibiotics were kept in a broiler house sanitized with disinfectants. ESBL-producing E. coli, however, was detected at a concentration of over 10⁶ CFU/g of feces at 9 days of age to 49 days of age in both broiler flocks. Therefore, this indicated that the antibiotics other than cephalosporins used in this study had no effect due to co-selection on the numbers of ESBL-producing E. coli in broiler feces during this period. When a flock was kept with diet containing antibiotics for 49 days in a laboratory animal room, no ESBL-producing E. coli was detected in the flock. These results suggest that the occurrence of ESBL-producing E. coli may not be related to feeding with antibiotics and that the contamination of broiler houses with ESBL-producing E. coli might be an important factor.

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