This study was performed on 330 broiler chicks over three lots. Three different diets containing soybean (lot 1 "control»), crushed peas (lot 2) and faba bean (lot 3) were distributed over the three groups. On crude protein "PB" we recorded three values for each batch corresponding to the three classical phases of farming. For the control group (PB = 20.45% at starter, 19.75% to 17.66% growth and finishing). For lot 2 we got (PB = 17.45% at starter, 16.95% to 15.46% growth and finishing). While animals of group 3 were subjected to 17.75% at starter, 17.23% to 15.68% growth and finishing. The best weight gain is obtained with rations lot 3 " fababean " and lot 1 "control" respectively 2744.72 g and 2430.50 g, weight gain differed significantly (p< 0.05). Ration based on crushed peas gave a relatively low body weight with an average of 2070.22 g. Any time the difference between the indices of consumption of various batches have not significant. For the best performance is obtained with carcass lots 1 and 3 with an average of 70.32 % for the ration containing faba bean against 70.10 % for the control diet , while Lot 2 has a return of 68.09 % .