Broiler Chicken Stocking Density and Welfare

The density at which broiler chickens are housed is one of the strongest predictors of welfare outcome, with higher densities associated with increased leg problems, litter quality issues, and mortality.

Key Facts

EU regulations allow maximum broiler stocking density of 33 kilograms per square meter with basic conditions
Higher-welfare standards such as the Better Chicken Commitment require maximum 30 kg per square meter
At maximum EU density, a 2.5 kg broiler has approximately 550 square centimeters of floor space
Studies consistently show higher mortality, lame birds, and poorer air quality at higher stocking densities
Retailers including Marks and Spencer and Waitrose have committed to the Better Chicken Commitment standards

Welfare Considerations

Stocking density is a leverage point for broiler welfare because it affects multiple welfare indicators simultaneously — leg health, air quality, litter condition, ability to perform natural behaviors, and thermal stress. Research shows linear relationships between density and welfare outcomes: each incremental reduction in density improves welfare outcomes measurably. The Better Chicken Commitment represents an evidence-based industry standard that major retailers have adopted; widespread consumer pressure could accelerate its universal adoption and create meaningful welfare improvements for billions of birds annually.

What You Can Do

Choose chicken certified by Better Chicken Commitment standards or equivalent
Contact supermarkets and fast food chains that have not adopted the Better Chicken Commitment
Support campaigns by Humane Society and Compassion in World Farming for broiler welfare standards
Reduce chicken consumption or transition to higher-welfare certified products