Qualidade bromatológica e perdas fermentativas da silagem de Capim Elefante cv. BRS Capiaçu (Pennisetum purpureum Schum) tratada com diferentes aditivos

Abstract

The objective of this work was to evaluate the bromatological quality and the fermentative losses of elephant grass cv. BRS Capiaçu after the addition of different additives. The work was carried out in the municipality of Laranjeiras do Sul, in the central-southern region of the state of Paraná. The experiment was divided into two stages, the first of which consisted of cutting elephant grass cv. BRS Capiaçu (Pennisetum purpureum Schum) on private property, and the second realization of the ensiling process and analyses, this stage being carried out on the premises of the Federal University of Fronteira Sul, the experiment was carried out between February and August 2022. Using a completely randomized design with six treatments and four replications, the treatments consisted of: urea (0.5%), glycerin (5%), corn meal (10%), cassava bran (5%), and wheat bran (25 %). The ensiling process was carried out using mini-silos with a Bunsen-type valve for storing the material, and the bromatological analyzes followed the methodologies of the university laboratory. The in natura material presented contents of 23% of dry matter (DM), 5.5% of pH, 7.35% of mineral matter (MM), 7.82% of crude protein (CP), 1.09% of ether extract (EE), 35.25% crude fiber (FB), 92.65% organic matter (OM), 48.49% non-nitrogenous extractive (ENN) and 52.96% total digestible nutrients (NDT ). The use of additives during the ensiling process of elephant grass cv. BRS Capiaçu guaranteed bromatological quality for the evaluated characteristics and fermentative stability, reducing fermentative losses. Since additives are environmental conditioners inside the silo for microbiological maintenance, acting in fermentation and ensuring greater stability of fermented forage.