Stunning before poultry slaughter is essential for welfare, but effectiveness varies significantly across methods and implementation quality, affecting billions of birds annually.
Poultry slaughter welfare affects a larger number of individual animals than any other slaughter welfare issue. The scale - 70+ billion chickens annually - means that even modest improvements in stunning effectiveness or method would have enormous welfare impact. Water bath electrical stunning, despite being the dominant commercial method, has documented failure rates and requires birds to be conscious while inverted and shackled before entering the stun bath. Controlled atmosphere systems avoid conscious shackling but involve their own welfare considerations during the induction phase. Consumer and regulatory pressure for better poultry slaughter standards has driven progress in some markets but remains globally inconsistent.