Characterization of Escherichia coli isolated from carcasses of beef cattle during their processing at an abattoir in Brazil

Beef carcass sponge samples collected between March 2003 and August 2005 at an abattoir in Brazil were surveyed for the presence of Shiga toxin-producing Escherichia coli (STEC). Only one carcass among the 80 tested showed a STEC, stx2-encoding gene by PCR amplification. The frequency of carcass con...

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Bibliographic Details
Published in:International journal of food microbiology 2006-07, Vol.110 (2), p.194-198
Main Authors: Rigobelo, E.C., Stella, A.E., Ávila, F.A., Macedo, C., Marin, J.M.
Format: Article
Language:English
Subjects:
Abattoir
Abattoirs - standards
Animals
Anti-Bacterial Agents - pharmacology
antibiotic resistance
bacterial contamination
Beef carcass
beef carcasses
Biological and medical sciences
Brazil
Cattle
Drug Resistance, Bacterial
Drug Resistance, Multiple, Bacterial
Escherichia coli
Escherichia coli - classification
Escherichia coli - drug effects
Escherichia coli - isolation & purification
Escherichia coli - metabolism
Food Contamination - analysis
Food Handling - methods
Food industries
Food microbiology
food pathogens
Fundamental and applied biological sciences. Psychology
genes
isolation
Meat - microbiology
Meat and meat product industries
meat processing
Microbial Sensitivity Tests
Multidrug resistance
multiple drug resistance
Polymerase Chain Reaction - methods
Seasons
serotypes
Shiga Toxin - biosynthesis
Shiga-like toxins
slaughterhouses
STEC
virulence
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Summary:Beef carcass sponge samples collected between March 2003 and August 2005 at an abattoir in Brazil were surveyed for the presence of Shiga toxin-producing Escherichia coli (STEC). Only one carcass among the 80 tested showed a STEC, stx2-encoding gene by PCR amplification. The frequency of carcass contamination by E. coli during processing was tested at three situations, respectively: preevisceration, postevisceration and postprocessing, during the rain and dry seasons. The prevalence of E. coli at the three points was of 30.0%, 70.0%, 27.5% in the rain season and of 22.5%, 55.0%, 17.5% during the dry season, respectively. The E. coli isolates exhibited a high level (45.0%) of multidrug resistance to two or more antimicrobial agents.
ISSN:0168-1605
1879-3460
DOI:10.1016/j.ijfoodmicro.2006.03.013