Welfare of Animals in Large-Scale Poultry Slaughter

Poultry slaughter plants process millions of birds daily using high-throughput systems that create specific welfare risks from shackling, water bath stunning, and live-hang operations.

Key Facts

A single US poultry plant may process 250,000 chickens daily
Live-hang workers handle 20-40 birds per minute, making gentle handling mechanically impossible
Water bath electro-immobilization stuns birds but does not reliably kill — birds may regain consciousness
Gas stunning with CO2 or inert gas mixtures is considered more welfare-positive but requires capital investment
Inversion on shackles before stunning causes acute distress and pain in birds

Welfare Considerations

High-throughput poultry slaughter welfare is constrained by the mathematics of processing speed. At 250,000 birds per day, individual handling is impossible — welfare depends on system design rather than individual attention. Shackling conscious birds inverted causes pain and distress before any stunning attempt. Water bath immobilization is not reliably effective at the voltages used in most commercial systems. Controlled atmosphere stunning — pre-slaughter gas exposure before shackling — eliminates the live-hang welfare problem and is the most welfare-positive available system.

What You Can Do

Advocate for mandatory controlled atmosphere stunning requirements in poultry slaughter regulations
Pressure retailers to require CAS from their poultry suppliers as a welfare standard
Support research into next-generation poultry slaughter welfare technologies
Engage with fast food companies about their poultry welfare supply chain standards including slaughter method