Valor nutricional e energético de espécies vegetais importantes na alimentação do Tambaqui

Abstract

Nutritional and energy value of some fruits and seeds from the flooded forests, next to Manaus-AM, important in tambaqui (Colossoma macropomum Cuvier, 1818) feeding were analyzed. For the species survey and types of fruits consumed for this species, we used information from the literature complemented with results obtained from analyses of the digestive content collected from captured fish and from the main fisheries landing and market in Manaus, the Panair fair. Fifteen digestive tracts were collected weekly at the fair, during nine months. The digestive tract were removed and put in plastic bags, stored in styrofoam boxes with ice and brought to the laboratory, where they remained in the freezer (-20ºC). Analyses of the digestive tract contents consisted of the fruits and seeds collected, preserved in alcohol 70% and identified from the digestive tracts, constituting a reference collection. After identification, fruits and seeds species collected from the varzea and igapo areas were collected for proximate analyses, according to A.O.A.C (1995) and crude energy (kJ/g) using a calorimetric bomb. 46 vegetation species distributed in 21 families and classified into nine types of fruits were identified. According to our data, tambaqui feeds encompass at least 133 species, between fruits and seeds, from 38 families and 15 types of fruits. Consumption of these items varied between triturated and/or whole. Proximate analyses from 14 seeds and 40 fruits species demonstrated that these items are more energetic than proteinous.