COMPOSIÇÃO QUÍMICO-BROMATOLÓGICA DA GRAMÍNEA Brachiaria brizantha cv. MG-5 EM FUNÇÃO DE INTERVALOS DE CORTE

Abstract

The present study presents the composition of Brachiaria brizantha cv. MG-5 as a function of different cutting intervals. The experiment was conducted in the experimental area of the Riza Seeds group, at Curitiba farm, municipality of Correntina-BA, Latitude 13°6´65´, Longitude 45°6´21´. The objective was to evaluate the range of cutting days on the production of natural matter, dry matter, plant height and chemical-bromatological composition of Brachiaria brizantha cv. MG-5. The forage was established in field plots. The experimental design used was completely randomized (CRD). The treatments consisted of three cutting intervals (20, 40, and 60 days), with six replications. The data were subjected to statistical analysis using SAS 2003. Tukey's test at a 5% significance level was adopted for comparing the means. Six cuts were performed for each interval, totaling 18 total samples. All plants were cut twenty days before the first collection at a height of 5 cm from the ground to standardize the area. It was observed that increasing the time between cuts in Brachiaria brizantha cv. MG-5 resulted in a higher percentage of dry matter, NDF, and ADF. In contrast, the levels of Crude Protein and the levels of phosphorus, potassium, and sulfur decreased.