It wasn’t that long ago that a broiler “lighting program” was pretty straightforward; 24 hours of light from day one until the birds were picked up. Some producers provided an hour of darkness at night so the birds would get accustomed to darkness. That way in the event there was a power outage at night the birds would not panic. Others might have even dimmed their lights slightly as the birds grow older to reduce activity to improve feed conversions. But for the most part, the objective o...f the “lighting program” was to keep the birds growing at a maximum rate by keeping the lights on 24 hours a day.