Farmed Chicken Transport Welfare: Heat, Duration, and Mortality

The transport of broiler chickens to slaughter is one of the highest-risk welfare events in the production cycle, with heat stress, injuries, and deaths during transit representing a preventable and significant welfare burden.

Key Facts

EU regulations allow up to 12 hours transport for chickens without water — studies show significant stress begins within 4 hours
Dead on arrival (DOA) rates at slaughterhouses average 0.2-0.4% across the industry — millions of birds per year
Heat stress during summer transport causes panting, wing spreading, and mortality when ventilation is inadequate
Catching by hand causes wing dislocations, leg fractures, and bruising — mechanical catching reduces some injuries
Catching typically occurs at night to reduce heat exposure and heat stress during loading
Chickens transported in crates cannot adjust their position relative to temperature — ventilation design is critical
Research shows DOA rates increase significantly above ambient temperatures of 25°C during summer transport

Welfare Considerations

Chicken transport welfare involves acute suffering compressed into a short but intense period at the end of the animal's life. Catching crews working at night manually collect birds from broiler houses — injuries from rough handling including wing dislocations and leg fractures are common, though rates vary significantly with crew training and management oversight. Birds are crated at high density and transported in vehicles where temperature, humidity, and airflow vary considerably across different crate positions. During summer heat, upper crates may reach temperatures causing heat stroke. The final hours of a chicken's life are frequently among its most stressful — an ethical failure that better transport standards, journey time limits, and effective enforcement can substantially reduce. The economic incentives for slaughterhouses to reduce DOA rates align partially with welfare objectives, creating an opportunity for industry-driven improvement.

What You Can Do

Support mandatory journey time limits and temperature monitoring requirements for poultry transport
Ask retailers about DOA rates and transport standards in their broiler supply chains
Advocate for mechanical catching equipment adoption to reduce handling injuries
Choose products from certified welfare schemes that include transport and lairage standards
Support the implementation of real-time temperature monitoring systems in poultry transport vehicles