Evaluation of chemical composition, mineral, amino acid profile and fatty acid acid silage of Nile Tilapia Oreochromis niloticus (Linnaeus) cultured in Indaiatuba - SP

Resumo

The research investigated the nutrient composition of the Nilo tilapia (Oreochromis niloticus (Linnaeus), acidic silage aiming at its utilization in substitution to fish flaour for animal nutrition. It was produced from “Nilo tilapia” autolysis in 3 % (w/w) formic acid by staring the minced fish in polyetilene container with a whole on the top to hit scape of gases, at 22 – 25^oC for 90 days. Determination of humidity, protein, lipids, ask and specific minerals were performed following a complete randomized procedure. Varance Analysis did not show statistical diferences (p>0,05) among samples for centesimal composition and minerals. A higher magnitude of amino acids de composition was fecund in the silages stored for 90 days. Ninety eight percent (98 %) of the 22 fatty scids determined contained 10 to 22 carbon atoms, and 22 of them acounted for less then 1 % concentration in the silages.