Slaughter methods significantly affect pig welfare. Understanding stunning technology and welfare standards informs both regulatory and consumer advocacy for humane slaughter.
Slaughter is the most welfare-critical event in a commercial pig's life. Ineffective stunning causes animals to regain consciousness during bleeding, experiencing severe pain. High-concentration CO2 stunning causes distress during the induction phase before unconsciousness. The scale of pig slaughter globally - over 1.4 billion pigs annually - means the welfare implications of stunning failures are enormous. Consumer pressure, regulatory requirements, and industry standards drive adoption of more humane stunning methods, but compliance and enforcement remain inconsistent across production systems.