How much floor space does a broiler chicken need?

A broiler’s floor-space requirement depends on its finishing weight, the house’s ventilation, seasonal conditions and applicable welfare rules. Plan using kilograms of live bird per square metre of usable floor, rather than bird count alone: heavier birds need more space at the same stocking-weight limit.

Under EU Directive 2007/43/EC, the conventional indoor stocking limit is 33 kg/m², rising to 39 kg/m² only where additional conditions are met. Industry welfare schemes commonly require 30 kg/m² or less. These are limits, not automatic stocking targets; other jurisdictions have their own rules, and naturally ventilated housing needs particular allowance for heat and moisture removal.

In the worked example, a naturally ventilated, deep-litter house at an ambient 17C holds 2,000 Ross 308 broilers at 10 birds/m². That requires 200 m² of usable bird floor, or 0.10 m² per bird. At the target finishing weight of 2.8 kg, the planned loading is 28 kg/m² before allowing for mortality. Do not rely on expected mortality to make a stocking plan fit.

Use the buyer’s target weight to calculate space, then check local law, assurance requirements and the house’s ability to maintain dry litter and good air quality. Plan a lower density for hot weather than for cool weather. The example’s 17C ambient temperature is not a chick brooding temperature; young chicks still need appropriate heating.