Poultry slaughter methods vary widely globally, and the welfare implications of stunning versus non-stunned slaughter are among the most contested in animal welfare policy.
Poultry slaughter welfare is determined by pre-slaughter handling, stunning effectiveness, and kill speed. Electrical water bath stunning can cause painful pre-stun shocks when birds flap and make incomplete circuit contact. Controlled atmosphere systems using inert gas avoid this problem but require capital investment. Non-stunned slaughter causes prolonged conscious distress while blood loss occurs. Welfare scientists broadly support mandatory pre-slaughter stunning with high-voltage, high-frequency systems or gas as the welfare-preferred options, while recognizing ongoing policy debates around religious exemptions.