Isolation of Campylobacter jejuni and Coliform Bacilli from Bile and Liver Obtained from Slaughter Cattle in Western Japan

Author:

MATSUMOTO NORIKO1,TANIWAKI TAE1,KINUTA MINAE1,MURASE TOSHIYUKI23

Affiliation:

1. 1Division of Health Science, The Public Health Institute of Kochi Prefecture, 2-4-1, Marunouchi, Kochi 780-0850, Japan

2. 2Laboratory of Veterinary Microbiology, Tottori University, 4-101, Koyama, Tottori 680-8553, Japan

3. 3Avian Zoonosis Research Center, Faculty of Agriculture, Tottori University, 4-101, Koyama, Tottori 680-8553, Japan

Abstract

A total of 290 bile samples from 143 Japanese Brown, 97 Japanese Black, and 50 Holstein cattle, and a total of 148 liver samples from 81 Japanese Brown, 49 Japanese Black, and 18 Holstein cattle were examined for the presence of Campylobacter jejuni by direct plating. The bile samples were also subjected to enumeration of coliform bacilli. Sixty-eight (23%) bile samples and 2 (1.4%) liver samples were positive for C. jejuni. A significantly higher isolation rate was observed from bile samples from Holstein (50%) than from Japanese Black (22%) and Japanese Brown (15%) cattle. C. jejuni was isolated from 52 of 232 bile samples that contained <30 CFU/ml (under the detection threshold) of coliform bacilli. The presence of C. jejuni from bile was observed throughout the year. Fifty-four of the 68 bile isolates were serologically typed into eight groups. Serotypes O:4 complex (28 isolates) and O:2 (11 isolates), which were commonly isolated from human patients in Japan, accounted for 57% of the isolates. These observations suggest that bile can be a cause of contamination with C. jejuni even though it contains only a low number of coliforms.

Publisher

International Association for Food Protection

Subject

Microbiology,Food Science

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