Lighting in poultry buildings affects behaviour, health, and welfare significantly. Photoperiod, intensity, and colour all influence bird welfare outcomes.
Lighting management in poultry buildings is a significant but often overlooked welfare issue. Near-continuous light historically used to maximise feeding time causes sleep deprivation and chronic stress. Dark periods allow birds to rest and restore circadian rhythms. Inappropriate light intensity - either too bright causing fear responses, or too dim preventing normal visual inspection of the environment - affects welfare and behaviour. Natural light access with UV components supports vitamin D synthesis and enables environmental assessment. Welfare-positive lighting protocols improve bird health outcomes and reduce mortality.