Description

Abstract: We evaluated the effects of casein-based semipurified diets, alone or supplemented with native

Peruvian plants, on growth, feed efficiency, and histology of the digestive tract of red pacu, Piaractus brachypomus, juveniles over an 8-wk feeding trial. Three tanks were randomly assigned to one of four casein-gelatin (40:8) diets containing a supplement of 15% wheat meal (control) or an identical level of substitution of three South American native plant as follows: camu-camu fruit (Myrciaria dubia ), aguaje fruit (Mauritia flexuosa ), or maca tuber meal (Lepidium meyenii ). The fish (initial weight, 2.04