Digestibilidade de resíduos de frutas para Acará disco (Symphysodon aequifasciatus)

Abstract

The present work aimed to evaluate the bioavailability of co-products from the fruit industry in the diet of paddlefish (Symphysodon aequifasciatus) by determining the digestibility coefficients of macronutrients. The digestibility of three co-products (waste meal from pulp production) were evaluated: pineapple co-product, mango co-product and passion fruit coproduct. A total of 32 fish (106 ± 26.6g) were used, distributed in 4 hatcheries for feeding and fecal collection in a latin square experimental design (4 test diets x 4 fecal collection periods x 4 replicates). The three co-products presented digestibility coefficients above 80%, 70% and 69% for dry matter, protein and ethereal extract, respectively, being possible to use them as a source of these nutrients in diets for acará disco. However, it was observed that the mango and passion fruit co-products presented the lowest utilization in relation to the digestibility coefficient for energy, with bioavailabilities lower than 50% of utilization. The co-products from the fruit processing industry tested in this study have nutritional conditions to be used as feed for acará disco. The use of these co-products as food for ornamental fish can be an alternative of use and aggregation of value.