Digestibilidade de farinhas de inseto para tilápia (Oreochromis niloticus) e lambari (Astyanax bimaculatus)

Abstract

Following studies in the search for alternatives for animal feed, the use of the ingredient insect flour, a source from insect farming, presents perspectives on its digestibility, as physiological structures work according to the type of food ingested, with different rates of absorption of its nutrients. An alternative to analyzing the digestible value of the ingredient is by determining the digestibility coefficients. In this study, the digestibility of dry matter, mineral matter, ether extract and protein of 4 insect meals (cinerea cockroach, mealworm, black cricket and black soldier fly) was evaluated. The fish were fed four times a day. And the animals were subjected to feces collection methodology in the direct method, by precipitation in funneled tanks (80L). In possession of the data, the digestibility coefficients presented the following values; The mealworm flour presented dry matter digestibility rates of 88.2% and 80.0% for the species of (o. niloticus) and (a. bimaculatus). In relation to the ether extract, the cricket flour ingredient had a higher digestibility value. The different insect flours used in the diet of tilapia and lambari fish species obtained different digestibility values for their components. Attesting that black soldier fly flour is the ingredient with the best protein digestibility.