Antibiotic resistance of [i]Escherichia coli[/i] isolated from a poultry slaughterhouse
Journal Title: Annals of Agricultural and Environmental Medicine - Year 2012, Vol 19, Issue 1
Abstract
The aim of the study was to investigate the antibiotic resistant [i]E. coli[/i] strains isolated from bioaerosols and surface swabs in a slaughterhouse as a possible source of poultry meat contamination. The highest air coliforms contamination was during shackling, killing and evisceration of poultry. The strains showed resistance to ampicillin (89%), ceftiofur (62%) and cefquinome (22%), while resistance to ampicillin with sulbactam was only 6%. Resistance to streptomycin and gentamicin was detected in 43% vs. 14% isolates; to tetracycline 33%; to chloramphenicol and florfenicol in 10% vs. 18% isolates; to cotrimoxazol in 35% isolates; to enrofloxacin in 43 % isolates. The higher MIC of ceftazidime (3.6 mg.l[sup]-1[/sup]) and ceftriaxon (5.2 mg.l[i]-1[/i]) revealed the presence of ESBLs in 43% of isolates. From 19 selected phenotypically ESBL positive strains, 16 consisted of CMY-2 genes, while CTX-M genes were not detected by PCR. Maldi tof analysis of selected [i]E. coli[/i] showed a clear clonal relatedness of environmental strains from various withdrawals.
Authors and Affiliations
Gabriela Gregova, Marta Kmetova, Vladimfr Kmet, Jan Venglovsky, Alexander Feher
Keywords
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