Silagem de dieta total contendo mucilagem de sisal como fonte de forragem

Abstract

The present work aims to produce a total diet silage (STD), using sisal mucilage, as a nutritional strategy for sheep in times of drought. The chemical bromatological characteristics, losses by effluents, losses by gas gases, recovery of dry matter and fractionation of carbohydrates were evaluated. Different levels of wheat bran (0%, 10%, 20%) and urea (0% and 1%) were added to the sisal mucilage, making all combinations possible, totaling 6 treatments and making adjustments for the balance, through the addition of corn and soybean meal. Two types of experimental silos, PVC tubes and polyethylene bags were used. In all treatments, 5 repetitions were performed with each type of silo. The data were submitted to analysis of variance, using the Tukey test, through the System for Statistical Analysis - SAEG®. Significance P <0.05. Diets containing the addition of 20% of wheat showed higher values of PB and EE, but diets with the lowest values of PB and diets containing the highest values of EE are still within the desired range. Similar behavior occurred with the NDFcp, LIG, HEM and CEL variables, showing higher values when added with 20% wheat. The values found for PPG, PPE and RDMS losses did not show statistical difference. After the carbohydrate fractionation analysis, a higher amount of the A + B1 fraction was identified. After interpreting the results, it is suggested that all the diets elaborated are within the desirable standard for a nutritional quality silage.