The apparent digestibility coefficients of DM, protein and energy of five ingredients (soybean meal, corn gluten meal, fish meal, broken rice and ground corn) were determined for jundia juveniles (78.5 ± 9 g). The indirect method was adopted for nutrient digestibility estimate. Chromium oxide (0.5%) was added to the diet as marker, and feces were collected by sedimentation every four hours. Among all tested ingredients, corn gluten meal showed the highest apparent digestibility coefficients (95.0% of protein, 88.0% of energy and 82.2% of DM), while ground corn showed the lowest apparent digestibility coefficients (73.0% of protein, 59.1% of energy and 57.2% of DM). The other ingredients showed intermediary results. The broken rice (high energy ingredient) showed 80.7% of protein, 64.8% of energy and 60.5% of DM, while the soybean meal and fish processing waste meal (high protein ingredient) showed 88.6 and 77.7%, respectively, for protein digestibility. The energy digestibility for the same ingredients were 76.5 and 74.8%, while for DM were 73.3 and 58.6%. The results show that jundia juveniles, although presenting an omnivorous feeding habit, is able to digest high protein ingredients better than high energy ingredients, suggesting that this species is an omnivore with carnivorous tendency.
digestibility; ingredients; Rhamdia quelen
