Presence of Bacterial Pathogens and Levels of Indicator Bacteria Associated with Duck Carcasses in a Commercial Processing Facility
Autor: | Mark E. Berrang, Richard J. Meinersmann, S W Knapp |
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Rok vydání: | 2020 |
Předmět: |
Salmonella
Veterinary medicine Meat Food Handling Aerobic bacteria animal diseases Colony Count Microbial Indicator bacteria Biology medicine.disease_cause Microbiology 03 medical and health sciences Cecum Escherichia coli medicine Animals Food-Processing Industry 0303 health sciences Bacteria 030306 microbiology Campylobacter 0402 animal and dairy science food and beverages 04 agricultural and veterinary sciences biology.organism_classification Antimicrobial 040201 dairy & animal science Ducks medicine.anatomical_structure Food Microbiology Chickens Food Science |
Zdroj: | Journal of Food Protection. 83:605-608 |
ISSN: | 0362-028X |
Popis: | Little information has been published on the microbiological aspects of U.S. commercial duck processing. The objective of this study was to measure prevalence and/or levels of bacteria in duck samples representing the live bird and partially or fully processed oven-ready duck meat. At 12 monthly sampling times, samples were collected at six sites along the processing line in a commercial duck slaughter plant. Crop and cecum samples were collected at the point of evisceration. Whole carcass rinse samples were collected before and after carcass immersion chilling plus application of an antimicrobial spray. Leg quarters were collected from the cut-up line before and after application of an antimicrobial dip treatment. All samples (five from each site per monthly replication) were directly plated and/or enriched for Salmonella and Campylobacter. For the last 10 replications, carcass and leg quarter rinse samples were also evaluated for enumeration of total aerobic bacteria, Escherichia coli, and coliforms. Most cecum, crop, and prechill carcass rinse samples were positive for Campylobacter (80, 72, and 67%, respectively). Carcass chilling and chlorinated spray significantly lowered Campylobacter prevalence (P < 0.01), and even fewer leg quarters were positive for Campylobacter (P < 0.01). Passage through a chlorinated dip did not further reduce Campylobacter prevalence on leg quarters. Salmonella was infrequently found in any of the samples examined (≤10%). Total aerobic bacteria, coliforms, and E. coli levels were reduced (P < 0.01) on whole carcasses by chilling but were not different after cut-up or leg quarter dip treatment. Overall, current commercial duck processing techniques as applied in the tested plant were effective for reducing the prevalence and levels of Campylobacter on duck meat products. HIGHLIGHTS |
Databáze: | OpenAIRE |
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