Trimming and washing poultry carcass to reduce microbial contamination: a comparative study

Area of Science:

• Food Science
• Microbiology
• Poultry Science

Background:

• Bacterial contamination of broiler carcasses is a significant food safety concern.
• Post-evisceration processing steps are critical for reducing microbial load.
• Evaluating decontamination methods is essential for the poultry industry.

Purpose of the Study:

• To compare the efficacy of carcass washing versus trimming in reducing bacterial contamination.
• To assess the impact of combined washing and trimming on microbial counts.
• To identify the most efficient decontamination method for broiler carcasses.

Main Methods:

• 100 broiler carcasses were evaluated across five groups: control, fecal contamination, trimmed, washed, and washed and trimmed.
• Carcass washing involved potable water with residual chlorine using spray cabinets.
• Microbial analysis included aerobic mesophiles, total coliforms, and fecal coliforms (Escherichia coli).

Main Results:

• Washed carcasses (trimmed or not) showed significantly lower counts of aerobic mesophiles and coliforms (total and fecal, including E. coli).
• Trimming alone reduced aerobic mesophiles but increased E. coli counts.
• Combined washing and trimming resulted in higher coliform counts compared to washing alone.

Conclusions:

• Carcass washing is a more effective decontamination method than trimming for broiler carcasses.
• The washing method offers a viable strategy for poultry companies to minimize bacterial contamination and potentially reduce production costs.
• Further research may explore optimized washing protocols for enhanced microbial reduction.