Abstract
Continuous and intermittent photoperiods of low intensity illumination were compared with respect to their effects on the performance of commercial broilers. Broilers subjected to an intermittent light regime consisting of 1 hr of light and 2 hr of darkness were significantly heavier at 56 days of age when compared to broilers receiving continuous illumination. Feed efficiencies were not significantly affected. The addition of zinc bacitracin or a fermentation product to the diet did not significantly affect body weight or feed efficiency under either light regime.
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