One standard lighting program will not be successful for all parts of the world. Therefore, the
lighting program recommendations listed in this guide should be customized based on the
environmental conditions, house type and overall stockman objectives. Lighting programs
inappropriately employed may impair average daily gain (ADG) and compromise flock
performance. Careful observations of flock performance, nutrient density and intake are
also important in designing lighting programs. If accurate ADG information can be acquired,
a program based on average weight gains is preferred.