Korean Journal of Veterinary Research 1990;30(4):421-425.
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
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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