Antibiotics susceptibility and biochemical characterization of Escherichia coli associated with diarrhea from preweaning piglets |
Hee-jin Ham1, Kyoung-sub Min2, Chan-hee Chae2 |
1Seoul Metropolitan Institute of Health and Environment 2College of Veterinary Medicine, Seoul National University |
포유자돈 소장에서 분리된 대장균의 생화학 성상과 항생제 감수성 결과 |
함희진1, 민경섭2, 채찬희2 |
1서울시 보건환경연구원 2서울대학교 수의과대학 |
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Abstract |
A retrospective study of 132 cases of natural Escherichia coli infection in preweaning piglets with diarrhea submitted to the Department of Veterinary Pathology in Seoul National University from 1995 to 1996 was performed to determine the biochemical characteristics and antibiotics susceptibility. Most field isolates were lysine decarboxylase-positive (99.2%), phenylalanine decarboxylase-negative (100%), and fermented sorbitol (91.7%). Antibiotic susceptibilities will be determined by agar diffusion method. A large percentage of isolates were resistant to many antibiotics in common usage. Most isolates were susceptible to colistin (98.8%), gentamycin (64.3%), amikacin (100%), and ceftiour sodium (64.2%), whereas most isolates were notably resistant to ampicillin (86.9%), neomycin (66.7%), streptomycin (84.5%), tetracycline (98.8%), penicillin (98.8%), and amoxacillin (58.3%). |
Key Words:
Escherichia coli, pig, antibiotic susceptibility, biochemical characterization |
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