الفهرس 
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Abstract
Feed-restriction were efficient in reducing feed consumption and making birds able to attain relatively similar market body weight as those fed ad libitum at 42 days of age , however enzyme supplementation produce birds
with higher body weight than occurred by feed restriction with also low feed intake . but the practice of feeding
exogenous enzymes to feed restricted chickens could be a desirable feeding stategy that might produce birds with
maximum final body weight, best feed conversion with a minimum feed intake.