Biochemical properties and cultural characteristics of Escherichia coli isolated from chickens |
Yong-ku Woo1, Ki-seuk Kim1, Bong-hwan Kim2 |
1Veterinary Research Institute, Rural Development Administration 2College of Veterinary Medicine, Kyungpook National University |
닭에서 분리한 Escherichia coli의 생물화학적 및 배양 특성 |
우용구1, 김기석1, 김봉환2 |
1농촌진흥청 가축위생연구소 2경북대학교 수의과대학 |
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Abstract |
The present study was conducted to investigate the biochemical and cultural characteristics of Escherichia coli isolates from clinically affected chickens during the period from May 1988 to June 1989. A total of 82 E coli cultures were isolated from lesions of 75 chickens with colisepticemia. Biochemical properties of E coli isolates tested were in accordance with the general classification standard; all the isolates showed positive reaction in Catalase, Indol, and Methyl-Red tests, but negative reaction in Oxidase, Urease, $V{ddot{o}ges$-Proskauer, Citrate utility, $H_2S$, Phenylalanine diaminase, and malonate tests. And the carbohydrate fermentation rates of them were shown to be variable. of the 82 isolates, 48(58.5%) cultures produced colicin to inhibit the indicator strain of E coli. |
Key Words:
Avian Escherichia coli, biochemical and cultural properties, colicin |
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