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ANTIBIOTICS RESISTANCE PROFILE OF ESCHERICHIA COLI ISOLATED FROM APPARENTLY HEALTHY DOMESTIC LIVESTOCK IN SOUTH-WEST NIGERIA (OSUN STATE, NIGERIA)
ABSTRACT
This study was conducted to determine the antibiotic
resistance profile of Escherichial Coli isolate from apparently healthy
domestic livestock viz: cow, goats and chicken from Osun State
Nigeria. E. Coli was isolated using Eosin methylene Blue Agar (EMB) and
identified by conventional microbiological technique. The isolate were
tested against 14 antibiotics using the disc diffusion method. A total
of 42 different antibiotics resistance profile were observed with each
isolate showing resistance to at least four or more drugs tested.
Generally, the E. coli isolates showed resistance rates of 93.8% to
Ampicilin; 15.3% to Chloramphenicol, 52.7% to cloxacillin, 74.3%
Erythromycin, 20.9% to Gentamicin, 53.8% to Penicillin, 17.7% to
Streptomycin, 67.3% to Tetracyclin, 21.1% to Ceftazidine 70.7% to
Cefuroxine, 20.5% to Cefixine, 28.8% to Ofloxacine, 58.6% to Augmentin,
27.2% to Nitorfurantion 27.3% to Ciprofloxacin. Statistical analysis
showed that average number of resistance phenotypes per isolate was
significantly higher for cow compared with poultry. A significant
public health concern observed in this study is that multi drug
resistant: commensal E. Coli strains may constitute a potential
reservoir of resistance genes that could be transferred to pathogenic
bacteria.