The effects of inclusion of pea hulls (PH) in the diet on growth performance, development of the gastrointestinal tract and nutrient retention were studied in broilers from 1 to 18 d of age. There were a control diet based on low fibre ingredients (69.3 total dietary fibre (16.1 g crude fibre/kg)) and three additional diets that resulted from the dilution of the basal diet with 25, 50 and 75 g PH/kg (81.2, 93.2, and 105.1 g total dietary fibre/kg diet, respectively). Each treatment was replicated six times and the experimental unit was a cage with 12 chicks. Growth performance, development of the gastrointestinal tract and the coefficients of total tract apparent retention (CTTAR) of nutrients were recorded at 6, 12 and 18 d of age. In addition, jejunal morphology was measured at 12 and 18 d and the coefficients of apparent ileal digestibility (CAID) of nutrients at 18 d of age. Pea hulls inclusion affected all the parameters studied.
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