Poultry Catching and Pre-Slaughter Transport Welfare
Catching and transport represent significant welfare challenges for poultry. This page reviews the welfare impacts of mechanical and manual catching, transport conditions, and best practice management.
Scale and Welfare Significance
Approximately one billion broiler chickens are slaughtered annually in the UK alone, all requiring catching, loading, transport, and lairage before slaughter. Even a small percentage of birds experiencing injury, distress, or pain during these processes represents millions of individual welfare events. Pre-slaughter welfare receives less regulatory and public attention than on-farm welfare despite affecting every farmed bird at the end of its life. Transport and catching welfare improvements have disproportionate population-level impact.
Manual Catching Welfare
Traditional manual catching involves workers catching birds individually by one or both legs and placing them into transport crates. Inversion carrying (holding by legs) causes distress, struggling, and risk of injury—joint dislocation, fractures, and wing damage are documented. Two-handed catching (supporting the breast and legs simultaneously) is less stressful. Welfare-conscious manual catching requires: trained, assessed catchers; prohibited dragging or throwing; minimum lift heights; and work rate management preventing fatigue-related rougher handling.
Mechanical Harvesting
Mechanical harvesting systems (harvesters) use rotating rubber fingers to guide birds onto conveyor systems, reducing direct human contact. They reduce handling injuries compared to poorly trained manual catchers, reduce catcher injuries (physical welfare of workers), and can operate faster. However, mechanical systems can also cause injuries (breast bruising, fracture) if not properly set up. Welfare depends on machine calibration, flock density, bird size, and litter quality at time of harvest. Machine catching is not inherently better than skilled manual catching—comparative welfare depends on implementation quality.
Catching Injuries
Injury rates from catching are welfare indicators: wing fractures, hip dislocations, and bruising are welfare-relevant outcomes measured in post-mortem surveys. UK surveys document significant injury rates—particularly wing fractures—associated with poor manual catching technique. Welfare assessment of catching operations should include: measurement of post-catch injury rates; observation of catching technique; and assessment of catcher training and competency. Regulatory requirements for catching training are limited—welfare improvement requires industry self-regulation and commercial incentives.
Transport Crate Design and Welfare
Transport crates determine available space, ventilation, and physical injury risk during transport. EU standards require minimum space allowances per bird (typically 160-170 cm² per broiler in the 1.8-3 kg range). Crate design affects ventilation—birds at the centre of stacks in poorly ventilated crates experience thermal stress. Modern modular crate systems with improved ventilation provide better welfare than older solid-sided designs. Welfare assessment of crates includes: space allowance; ventilation adequacy; injury risk from sharp edges; and ease of bird entry and exit.
Thermal Stress During Transport
Temperature regulation during transport is a critical welfare challenge: birds generate significant body heat; summer temperatures can cause fatal hyperthermia; winter cold causes hypothermia in wet or injured birds. Journey duration, stocking density within crates, vehicle design, weather conditions, and lairage temperature all affect thermal welfare. Welfare-positive transport management includes: avoiding maximum temperature periods for transport; monitoring vehicle temperature; and ensuring lairage facilities have appropriate climate control.
Journey Duration and Lairage
EU Transport Regulation permits poultry journeys up to 12 hours; longer journeys require additional water provision. Research consistently documents welfare deterioration with increasing journey duration. Shorter journeys—ideally under 4 hours—minimise thermal stress, fatigue, and fear duration. Lairage (pre-slaughter holding) welfare requires: appropriate temperature control; minimum duration consistent with processing flow; water provision for longer lairage periods; and minimisation of noise and disturbance.
Summary
Pre-slaughter catching and transport represent the final welfare events in every farmed bird's life, making improvement efforts highly impactful at population scale. Welfare-positive catching requires trained, assessed catchers, appropriate technique, and injury rate monitoring. Transport welfare requires appropriate crate design, thermal management, minimum journey duration, and welfare-focused lairage management. Investment in pre-slaughter welfare demonstrates that welfare improvement is feasible at the most challenging—and most neglected—points in the production system.