Chicken Lighting Advances: Behavioral Welfare Through Illumination

Lighting programs in commercial poultry housing significantly affect behavioral welfare, and advances in LED lighting management are enabling improvements in broiler and layer hen welfare at low cost.

Key Facts

Poultry perceive ultraviolet wavelengths that humans cannot, making lighting species-specific welfare considerations important
Dim continuous lighting programs were used historically to suppress activity and reduce aggression in broilers
Evidence shows that dim lighting actually impairs vision and increases fear responses in chickens
Providing higher light intensity with dark periods significantly improves natural behavior expression
LED lighting allows precise control of spectrum, intensity, and photoperiod for welfare optimization
Naturalistic dawn and dusk simulation through gradual dimming and brightening reduces acute stress from light transitions

Welfare Considerations

Poultry lighting welfare is an area where significant improvements are achievable at relatively low cost through lighting system upgrades. The historical practice of dim continuous lighting to suppress broiler activity was based on production rather than welfare considerations - the welfare effect is impaired visual capability and increased fearfulness. Evidence-based lighting programs for broilers now recommend minimum light intensity thresholds, at least 6 hours of darkness per 24-hour period, and gradual light transitions. These changes improve behavioral welfare indicators without significant production cost, making them among the most cost-effective welfare improvements available to commercial poultry producers.

What You Can Do

Support welfare standards requiring minimum light intensity and dark period requirements for broilers
Advocate for naturalistic lighting programs as a baseline requirement in poultry certification
Choose poultry from certified producers with evidence-based lighting welfare standards
Support research into optimal poultry lighting programs for different species and production systems
Engage with poultry equipment suppliers about promoting welfare-optimized lighting systems