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Isolation Characterization Antibiotic susceptibility E coli Lambs
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Isolation, Characterization and Antibiotic Susceptibility Pattern of Escherichia coli from Diarrhoeic Lambs in Sokoto, Northwestern Nigeria
Abstract
A total of 127 faecal samples were collected from diarrhoeic lambs and examined for Escherichia coli. The bacterial culture involved pre-enrichment in peptone water before C incubation at 37 for 24 hours. Out of the isolates obtained, 42 (36.84%) were positive for Escherichia coli. Characterization of the isolates revealed serotypes O157 (13), O118 (9), O111 (8), O26 (7), and O103 (5) as the most frequent strains. Their prevalence rates being 31.0%,
21.4%, 19.0%, 16.7% and 11.9% respectively. Minimum Inhibitory Concentration (MICs) of the E coli strains to six antibiotics revealed tetracycline as having the lowest MIC, which ranged from 3.12ìg/ml - 50ìg/ml followed by chloramphenicol with an MIC ranging between 6.25ìg/ml -
100ìg/ml. It was concluded that there was need for further research to study the pathogenicity of the E coli strains and that resistance to antibiotics was a problem which might have resulted from indiscriminate use of these drugs.
21.4%, 19.0%, 16.7% and 11.9% respectively. Minimum Inhibitory Concentration (MICs) of the E coli strains to six antibiotics revealed tetracycline as having the lowest MIC, which ranged from 3.12ìg/ml - 50ìg/ml followed by chloramphenicol with an MIC ranging between 6.25ìg/ml -
100ìg/ml. It was concluded that there was need for further research to study the pathogenicity of the E coli strains and that resistance to antibiotics was a problem which might have resulted from indiscriminate use of these drugs.
