Broiler carcass quality using head-only electrical stunning in a waterbath.

Area of Science:

• Animal Science
• Poultry Science
• Food Science

Background:

• Current broiler stunning methods can lead to carcass damage.
• New European Union (EU) regulations necessitate higher stunning currents, potentially increasing damage.
• Minimizing carcass defects is crucial for poultry processing efficiency and product quality.

Purpose of the Study:

• To assess the carcass quality of broilers stunned using a novel head-waterbath electrical stunning method.
• To compare the incidence of hemorrhages and bone fractures with conventional stunning practices.
• To determine the efficacy of this method in mitigating carcass damage under new regulatory requirements.

Main Methods:

• Broilers were stunned by head immersion in an electrified waterbath, with a secondary current to control wing flapping.
• The prevalence of wing, shoulder, and breast fillet hemorrhages was recorded.
• Incidence of broken bones in the pectoral region was quantified and compared to a control group.

Main Results:

• The novel stunning method did not result in a higher prevalence of hemorrhages or bone fractures compared to the standard practice.
• The observed defect rates were within acceptable limits and comparable to the existing plant standard (63 mA, 610 Hz pDC).
• This indicates the method's potential for maintaining carcass integrity.

Conclusions:

• The evaluated head-waterbath electrical stunning technique is effective in minimizing carcass damage in broilers.
• This method offers a viable alternative to higher current stunning, aligning with new EU poultry slaughter regulations.
• Implementing this technique can lead to significantly lower carcass damage than required by higher stunning currents.