Many studies have been conducted to determine the effect of light on broiler performance, and many others on the effect of stocking density. However, there has been a very few investigation on the influence of light color on intestinal morphology of broilers. This study intended to evaluate the effects of color lights and bird density as it relates to small intestine (villi length and crypt depth ) of broilers.A total of 675Ross 308 one-day-old broiler chicks were used in this study. The birds were exposed to white light (WL) as a control , red light (RL), blue light (BL), green light (GL), and Blue – Green mix light (BGL) by a light-emitting diode system (LED) applied for 24 hours daily in separated rooms. The birds were randomly divided and housed into 9 wooden sealed pens of 1m2 in three replicates for each density 12, 15 and 18 birds/m2 in the room.
