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Este estudo teve por objetivo avaliar o coeficiente de digestibilidade aparente da matéria seca, da proteína bruta e a energia bruta de alimentos (farelo de soja, farelo de canola, farinha de peixe e milho), para juvenis de piavuçu, <em>Leporinus macrocephalus</em> (Anostomidae). 60 peixes (60g) foram alimentados com uma ração referência (purificada) marcada com 0,10% de óxido de crômio III. Os peixes foram mantidos em aquários de alimentação (500L), das 8h às 17h. Após esse período, foram transferidos para aquários (250L) apropriados para a coleta de fezes. Pode-se concluir que alimentos de origem vegetal (farelo de soja e milho) apresentam maiores coeficientes de digestibilidade aparente para a proteína bruta e a energia digestível. This study aimed to evaluate the apparent digestibility coefficients of dry matter, crude protein and digestible energy of feedstuffs (soybean meal, canola meal, fish meal and corn) for piavuçu juveniles, <em>Leporinus macrocephalusn</em> (Anostomidae). Sixty fish (60.0g) were fed control diet (purified) marked with 0.10% chromic oxide III. Fish were maintained in aquaria (500L) for feeding, between 0800-1700h. After this period they were transferred for aquaria (250L) appropriate for fecal collection. The apparent digestibility coefficients of nutrient were determined by assessing the difference between the feed and fecal concentrations of the marker. It was concluded that vegetable feedstuffs (soybean meal and corn) showed high apparent digestible coefficients for protein crude and digestible energy

Digestibilidade aparente de alimentos pelo piavuçu, Leporinus macrocephalus