Características forrageiras de variedades de cana-de-açúcar (Saccharum spp.) desenvolvidas no Estado de Alagoas

Abstract

The sugarcane (Saccharum spp.) Has significant importance as a forage plant, mainly used as nutritional supplementation during drier periods, a time when the lack of rain reduces the nutritional quality of pasture. The objective of this study was to evaluate the nutritional value by chemical-chemical composition and in vitro digestibility of the varieties RB 99395, 98710 RB, RB 931003, RB 931011, developed by Cane Sugar Improvement Program (PMGCA) of Alagoas. The treatments were arranged in a completely randomized design, with five repetitions, using rumen fluid that was collected through a ruminal fistula in two sheep. The chemical analysis consisted in determining the dry matter (DM), mineral matter (MM), crude protein (CP), ether extract (EE), neutral detergent fiber (NDF), acid detergent fiber (ADF), insoluble protein neutral detergent (PIDN), acid detergent insoluble protein (PIDA) and lignin (LIG), and the determination of In Vitro digestibility of dry matter (IVDMD) and the degree of sucrose (POL%). The study showed that the protein levels Gross mineral matter are low and correction forms need to be studied. RB 931011 variety was the variety that has the highest levels of MS and the best digestibility of dry matter in relation to the studied varieties. The RB 98 710 variety has higher levels of EE and smaller FDA levels. The varieties studied had bromatological values that give this great potential for use in animal feed.