Modeling of interventions for reducing external Enterobacteriaceae contamination of broiler carcasses during processing

This article presents a mathematical model for the Enterobacteriaceae count on the surface of broiler chicken during slaughter and how it may be affected by different processing technologies. The model is based on a model originally developed for Campylobacter and has been adapted for Enterobacteria...

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Veröffentlicht in:Risk analysis 2023-10, Vol.43 (10), p.1933-1945
Hauptverfasser: Correia Carreira, Guido, Projahn, Michaela, Langkabel, Nina, Becker, Evelyne, Käsbohrer, Annemarie
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container_end_page 1945
container_issue 10
container_start_page 1933
container_title Risk analysis
container_volume 43
creator Correia Carreira, Guido
Projahn, Michaela
Langkabel, Nina
Becker, Evelyne
Käsbohrer, Annemarie
description This article presents a mathematical model for the Enterobacteriaceae count on the surface of broiler chicken during slaughter and how it may be affected by different processing technologies. The model is based on a model originally developed for Campylobacter and has been adapted for Enterobacteriaceae using a Bayesian updating approach and hitherto unpublished data gathered from German abattoirs. The slaughter process in the model consists of five stages: input, scalding, defeathering, evisceration, washing, and chilling. The impact of various processing technologies along the broiler processing line on the Enterobacteriaceae count on the carcasses' surface has been determined from literature data. The model is implemented in the software R and equipped with a graphical user interface which allows interactively to choose among different processing technologies for each stage along the processing line. Based on the choice of processing technologies the model estimates the Enterobacteriaceae count on the surface of each broiler chicken at each stage of processing. This result is then compared to a so-called baseline model which simulates a processing line with a fixed set of processing technologies. The model calculations showed how even very effective removal of bacteria on the exterior of the carcass in a previous step will be undone by the cross-contamination with leaked feces, if feces contain high concentrations of bacteria.
doi_str_mv 10.1111/risa.14079
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This result is then compared to a so-called baseline model which simulates a processing line with a fixed set of processing technologies. 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source Wiley Journals; EBSCOhost Business Source Complete
subjects Abattoirs
Bacteria
Bayesian analysis
Campylobacter
Carcasses
Chickens
Contamination
Enterobacteriaceae
Feces
Graphical user interface
Mathematical models
Poultry
Risk assessment
Scalding
Slaughter
Washing
title Modeling of interventions for reducing external Enterobacteriaceae contamination of broiler carcasses during processing
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