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Related Experiment Videos

Salmonella contamination in a poultry-processing plant.

G K Morris, J G Wells

    Applied Microbiology
    |May 1, 1970
    PubMed
    Summary

    Salmonella contamination in poultry processing plants is reduced by washing but recontamination occurs during evisceration and chilling. This study tracked Salmonella spread across multiple flocks over two years.

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    Area of Science:

    • Food safety
    • Microbiology
    • Veterinary public health

    Background:

    • Poultry processing plants are potential sources of Salmonella contamination.
    • Understanding contamination points is crucial for effective food safety interventions.

    Purpose of the Study:

    • To identify the prevalence and sources of Salmonella contamination in a poultry-processing plant.
    • To evaluate the effectiveness of washing procedures and pinpoint recontamination stages.

    Main Methods:

    • Bacteriological examination of 1,427 samples over a 2-year period.
    • Isolation and identification of Salmonella serotypes.
    • Tracking contamination spread across serial flock processing.

    Main Results:

    • 202 (14.2%) samples tested positive for Salmonella.
    • Washing reduced contamination, but recontamination occurred during evisceration and chilling.
    • Salmonella spread between flocks was observed but generally limited.

    Conclusions:

    • Poultry processing involves multiple stages where Salmonella recontamination can occur.
    • Targeted interventions at evisceration and chilling are needed to improve food safety.
    • The isolated Salmonella serotypes align with those commonly found in chickens nationwide.

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