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Kinguios sao uma das mais importantes especies de peixes ornamentais criadas mundialmente, entretanto, sao insuficientes os estudos com digestibilidade de ingredientes para a especie. O objetivo com este estudo foi determinar os coeficientes de digestibilidade aparentes (CDAs) da materia seca, proteina bruta e energia bruta de ingredientes energeticos (quirera de arroz, farinha de milho e farelo de trigo) e proteicos (farelo de soja, farinha de peixe, farinha de visceras de aves) para kinguios (Carassius auratus). O oxido de cromo III foi usado como marcador inerte. Os CDAs da materia seca e energia dos ingredients energeticos foram, em ordem decrescente: quirera de arroz (97,19 e 94,55%), farinha de milho (76,61 e 77,65%) e farelo de trigo (45.43 e 48.83%); enquanto nos ingredientes proteicos foram: farelo de soja (72,14 e 73,54%), farinha de visceras de aves (61,77 e 69,50%) e farinha de peixe (47,48 e 60,65%). CDAs da proteina foram mais altos para o farelo de soja (96,11%) e de milho (90,77%), enquanto os menores valores foram observados para a farinha de peixe (75,53%) e farelo de trigo (73,06%). Em geral, os nutrientes da quirera de arroz e do farelo de soja foram aproveitados mais eficientemente pelos peixes. Ainda que todos os ingredientes estudados sejam passiveis de uso em dietas de kinguios, o farelo de trigo deve ser utilizado com precaucao, em decorrencia da baixa digestibilidade. Palavras-chave: Carassius auratus. Farinha de Peixe. Farinha de Visceras de Aves. Milho. Quirera de Arroz.   Abstract Kinguios are one of the most important ornamental fish, however the studies about ingredients digestibility for this species are insufficient. The objective of this study was to determine apparent digestibility coefficients (ADC) of dry matter, gross energy and crude protein of energetic (broken rice, corn meal, and wheat bran) and proteic (soybean meal, fishmeal and poultry by-product meal) feedstuffs for goldfish (Carassius auratus). Chromium oxide III was used as an external marker. The digestibility values of dry matter and energy, in decreasing order, were higher for broken rice (97.19 and 94.55%), corn meal (76.61 and 77.65%) and wheat bran (45.43 and 48.83%) in energetic ingredients; and soybean meal (72.14 and 73.54%), poultry by-product meal (61.77 and 69.50%) and fish meal (47.48 and 60.65%) in proteic ingredients. Protein digestibility values were higher for soybean meal (96.11%) and corn meal (90.77%) and the lowest values were observed for fishmeal (75.53%) and wheat bran (73.06%). In general, broken rice and soybean meal nutrients were more efficiently used by fish. Although all the studied ingredients are suitable for use in diets for goldfish, wheat bran should be used with caution because of its low digestibility. Keywords: Carassius auratus. Corn, Broken Rice. Fishmeal. Poultry Meal.

Apparent Digestibility Coefficient of Proteic and Energetic Ingredients for Goldfish