Broiler Chicken Stocking Density: Space, Health, and Welfare Outcomes

Stocking density in broiler chicken houses directly affects welfare through space availability, air quality, and litter conditions. Evidence-based density limits improve outcomes.

Key Facts

EU regulations allow maximum stocking densities of 33 kg per square metre for standard broiler production
The Better Chicken Commitment specifies maximum densities of 30 kg per square metre or lower
Higher stocking density is associated with increased foot pad dermatitis, hock burns, and breast blisters
Air quality deteriorates with higher densities, increasing ammonia levels that cause respiratory irritation and eye damage
Lower stocking density combined with enrichment and slower-growing breeds produces the best welfare outcomes

Welfare Considerations

Stocking density is one of the most important and modifiable welfare determinants in broiler production. At high densities, chickens have insufficient space to move freely, litter quality deteriorates rapidly due to high moisture load from feces and respiration, and air quality declines as ammonia levels rise. The welfare consequences are measurable: higher rates of contact dermatitis on feet and hocks, increased respiratory irritation, higher mortality, and reduced activity. Lower density combined with slower-growing breeds and enrichment produces the most significant welfare improvements. The Better Chicken Commitment density limit of 30 kg per square metre, while still intensive by welfare standards, represents a meaningful improvement over conventional maximum densities.

What You Can Do

Choose chicken from suppliers meeting Better Chicken Commitment stocking density standards
Advocate for lower maximum stocking density limits in national legislation
Reduce chicken consumption or choose higher-welfare alternatives
Support research into optimal stocking density for broiler welfare