Light cycles allow the bird to establish rhythmicity and synchronize many essential functions, including body temperature and various metabolic steps that facilitate feeding and digestion. Light, as an environmental factor, consistsof 3 different aspects that can affect the physical activity of broiler chickens: light intensity,
color, and the photoperiodic regimen [4]. Color and intensity are important in behavioral modifications, whereas exposure of broilers to darkness is essential to bird health [5]. Color is defined by wavelength and exerts variable effects on flock performance. Light of different wavelengths has varying stimulatory effects on the retina and can result in behavioral changes
that will affect growth and development