Amonização do Capim-Elefante BRS Capiaçu sob doses de ureia

Abstract

The objective of this study was to evaluate the chemical composition of dry herbage of elephant grass BRS Capiaçu (Pennisetum Purpureum) harvested at an advanced stage of maturity and ammonized with different doses of urea. A completely randomized design was used, where the treatments consisted of 5 different doses of urea (0, 2.5, 5.0, 7.5 and 10.0), with four replications. A decreasing quadratic effect was observed on the dry matter content of the dry herbage of elephant grass BRS Capiaçu with the increase of the applied urea dose, and from the 6.86% (68.14% of dry matter) dosages. results obtained have a progressive elevation. A decreasing linear behavior was obtained for neutral detergent fiber, acid detergent fiber and hemicelluloses, and an increasing linear effect for total digestible nutrients, crude protein and nitrogen retention with increasing urea doses. For acid detergent insoluble protein (PIDA) an increasing quadratic effect was observed, with a maximum content of 1.30 at a dose of 7.98% urea. Ammonization of the dried fodder of elephant grass BRS Capiaçu via urea improves its chemical composition, and up to 6.27% can be recommended based on crude protein supply limits, based on forage dry matter.