Evaluation of Fermented Apple Bagasse (Manzarine) In Tilapia Feed (Oreochromis Niloticus, Rocky Mountain Variety) In a Semi-Controlled System

Abstract

The objective of this work was to evaluate the use of a fermented apple (manzarine) compound rich in functional compounds and yeasts in the behavior of Tilapia (Oreochromis niloticus) Rocky Mountain variety in a semi-controlled aquaculture system. The variables evaluated were weight gain, length, width and height of the fish, as well as dissolved oxygen, temperature and pH. They were separated into two diets, including 10% Manzarina (MAN Treatment), comparing it against a control food. During the study, 210 three-week-old fingerlings were used, which for evaluation 21 fish tanks in the growth stage and two 1,800-liter Rotoplás ® containers for the development stage were used. For the statistical analysis of the data, an ANOVA analysis of variance was used to evaluate the productive variables. In all variables, the interaction of treatment with the covariates "day, oxygen, pH, and temperature" was tested. There was no statistical difference between treatments based on fish growth (P > 0.05), however, there was a statistical difference in the influence of the environment on growth (P ≤ 0.05), where dissolved oxygen had a significant influence (P ≤ 0.05) with daily gain in weight, length and height, and temperature and pH significantly influenced (P < 0.05) the width of the fish.