Shedding of food-borne pathogens and microbiological carcass contamination in rabbits at slaughter

To obtain microbiological data from rabbits at slaughter, 500 fecal samples and 500 carcasses samples were examined. All samples tested negative for Listeria and Salmonella. Campylobacter were detected in two fecal samples. Of the 500 fecal samples, 45.8% tested positive for eae (intimin), 1.2% for...

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Bibliographic Details
Published in:Veterinary microbiology 2008-11, Vol.132 (1), p.149-157
Main Authors: Kohler, R., Krause, G., Beutin, L., Stephan, R., Zweifel, C.
Format: Article
Language:English
Subjects:
Abattoirs
animal pathogenic bacteria
animal production
Animals
Bacteria - classification
Bacteria - isolation & purification
bacterial contamination
bacterial toxins
Bacteriology
Biological and medical sciences
Campylobacter
Carcass contamination
disease reservoirs
Enterobacteriaceae
Enteropathogenic Escherichia coli
epidemiological studies
Escherichia coli
Fecal shedding
feces
Feces - microbiology
food animals
Food Microbiology
food pathogens
foodborne illness
Fundamental and applied biological sciences. Psychology
human diseases
human food chain
Listeria
meat carcasses
meat inspection
microbiological quality
Microbiology
Miscellaneous
Rabbit
rabbits
Rabbits - microbiology
risk assessment
Salmonella
Staphylococcus aureus
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Summary:To obtain microbiological data from rabbits at slaughter, 500 fecal samples and 500 carcasses samples were examined. All samples tested negative for Listeria and Salmonella. Campylobacter were detected in two fecal samples. Of the 500 fecal samples, 45.8% tested positive for eae (intimin), 1.2% for stx (Shiga toxin), and 1.8% for both eae and stx. By colony hybridization, 56 eae positive Escherichia coli strains were isolated. Among them, 27 strains (48.2%) were of the serotypes O178:H7 and O153:H7, whereas 15 strains (26.8%) belonged to a serogroup that has not yet been described (O(CB10681):H7). All strains possessed intimin β1 and the translocated intimin receptor ( tir) capable of being tyrosine phosphorylated. None of the strains harbored the genes for Shiga toxins, EAST1 ( astA), bundlin ( bfpA), or the EAF plasmid. Slaughter rabbits therefore constitute a reservoir for certain atypical enteropathogenic Escherichia coli. On rabbit carcasses, average total bacterial counts accounted for 3.3 log CFU cm −2. Enterobacteriaceae and coagulase positive staphylococci (CPS) were detected on 118 (23.6%) and 153 (30.6%) carcasses, respectively. Enterobacteriaceae and CPS counts of positive samples were mainly
ISSN:0378-1135
1873-2542
DOI:10.1016/j.vetmic.2008.04.020