Feather release force in minimally scalded broilers stunned with carbon dioxide or electricity

Area of Science:

• Poultry Science
• Animal Welfare
• Food Processing

Background:

• Effective stunning is crucial for humane broiler slaughter and meat quality.
• Scalding parameters significantly influence feather removal efficiency.
• Understanding the interplay between stunning and scalding is vital for optimizing poultry processing.

Purpose of the Study:

• To evaluate the effect of two stunning methods (CO2 gas vs. electrical) on broiler feather release force (FRF).
• To assess the impact of two scalding methods (soft vs. softer scald) on FRF.
• To determine if stunning method influences FRF in relation to scalding treatments.

Main Methods:

• Seventy-two broilers were subjected to either CO2 gas stunning or electrical stunning.
• Following bleeding, birds were scalded using a soft (53°C for 120s) or softer (53°C for 90s) method.
• Feather release force (FRF) was measured using a force gauge on the femoral feather tract within 2 minutes post-scalding.

Main Results:

• A higher FRF was observed in broilers subjected to the soft scald compared to the softer scald.
• No significant differences in FRF were found between CO2 gas and electrical stunning methods for either scalding treatment.
• Scalding temperature and duration were the primary determinants of feather release, not the stunning method.

Conclusions:

• Scalding parameters are more critical than the stunning method (CO2 gas or electrical) in determining feather release force in broilers.
• The softer scald resulted in lower feather release force, suggesting potential implications for processing efficiency.
• Further research could explore optimal combinations of stunning and scalding for improved poultry processing outcomes.