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Salmonellae in the environment around a chicken processing plant.
Applied Microbiology
|May 1, 1974
Summary
Poultry processing plant waste is a constant reservoir for Salmonella, with changing serotypes potentially indicating environmental infection sources. Disinfection of these wastes is recommended to control spread.
Area of Science:
- Environmental microbiology
- Food safety science
- Public health
Background:
- Poultry processing plants generate significant waste streams.
- Salmonellae contamination poses a risk to public health and the environment.
- Understanding environmental reservoirs of Salmonella is crucial for control.
Purpose of the Study:
- To assess poultry processing waste as a Salmonella reservoir.
- To evaluate the significance of environmental Salmonella.
- To identify control strategies for Salmonella spread.
Main Methods:
- Conducted a 2-year study at a large-scale chicken processing plant.
- Monitored Salmonella and indicator bacteria in waste and receiving waters.
- Analyzed bacterial populations in raw waste, treated waste, and stream water.
Main Results:
- Salmonella consistently found in poultry waste, with over 1 Salmonella per 500 fecal coliforms.
- Observed dynamic changes in environmental Salmonella serotypes.
- Identified potential links between plant conditions and environmental/animal infections.
Conclusions:
- Poultry processing waste is a significant environmental Salmonella reservoir.
- Environmental Salmonella serotypes can indicate processing plant issues or external infection sources.
- Recommends disinfection of poultry processing plant wastes to mitigate Salmonella spread.