Farmed Animals

Broiler Chicken Lighting and Welfare

Lighting programmes in poultry barns profoundly affect broiler behaviour, growth, and welfare outcomes.

Key Facts

Continuous light was historically standard but causes leg problems and stress
Broilers need dark periods to rest and sleep properly
Dim-light programmes of 6-8 dark hours improve welfare and reduce mortality
Natural light access reduces fearfulness and promotes foraging behaviour
EU rules require at least 6 hours darkness and 20 lux illuminance

Welfare Considerations

Poor lighting regimes deny broilers natural rest cycles, leading to chronic sleep deprivation, stereotypic pacing, and increased susceptibility to disease. Providing adequate dark periods and appropriate intensity dramatically improves bird welfare.

What You Can Do

Choose poultry products from farms with improved lighting certifications
Support welfare standards that mandate minimum dark periods
Ask retailers about supplier lighting practices
Advocate for science-based lighting rules in national legislation