Broiler Stocking Density and Welfare

Stocking density in broiler chicken production is one of the most significant determinants of welfare outcomes; higher densities are associated with lameness, disease, and reduced welfare.

Key Facts

EU regulations cap broiler stocking density at 33 kg per square metre, with enhanced standards at 39 kg
At 33 kg per square metre a building holds roughly 22-23 birds per square metre at slaughter weight
Stocking density above 30 kg per square metre is associated with increased lameness and reduced activity
The Better Chicken Commitment calls for a maximum of 30 kg per square metre as part of its standards
Air quality deteriorates at higher stocking densities increasing ammonia exposure and respiratory disease

Welfare Considerations

Stocking density is the variable that most directly determines whether a broiler house provides an acceptable welfare environment. At the maximum permitted EU density, floor space per bird is approximately the size of an A4 sheet of paper. Birds cannot move freely, are forced to sit in litter contaminated by excreta, and are exposed to poor air quality from the accumulated ammonia. The Better Chicken Commitment's lower density standard of 30 kg per square metre is associated with measurably better welfare indicators including more active birds, lower lameness rates, and reduced disease prevalence. This improvement comes at a modest cost that consumer premium pricing can support.

What You Can Do

Choose chicken certified to the Better Chicken Commitment maximum density standard
Ask supermarkets and restaurants whether their chicken meets enhanced stocking density standards
Advocate for a regulatory reduction in maximum broiler stocking density to 30 kg per square metre
Support campaigns asking major food companies to commit to Better Chicken Commitment standards
Raise awareness about stocking density as a key welfare variable in poultry production