Composição química da silagem de capim elefante com a inclusão de farelo de girassol

Abstract

The chemical composition of Pennisetum purpureum Shum silages was evaluated. with sunflower bran. The treatments consisted of the inclusion of 0, 10, 20 and 30% of sunflower bran in elephant grass ensilage, distributed in a completely randomized design with four treatments and five replications. The forage was cut manually with approximately 5 cm of soil, then it was minced with a particle size of 2cm, the plant was with a height of 1.80 m, silage of elephant grass was carried out in silos. 4 L and the opening of the silos occurred at 40 days after ensiling. Data were subjected to analysis of variance and regression using the statistical software R. at 5% significance level. An increase (P <0.05) of 47 percentage units was observed for each 1% of the added residue on dry matter (DM). The addition of sunflower bran promoted a negative quadratic effect (P <0.05) on the NDF contents, observing its minimum point of 66.81%. For the values of acid detergent fiber (FDA) and (CNF), a negative quadratic effect (P <0.05) was observed, reaching a minimum point of 63.55% of ADF with 24.44% of the bran added. sunflower and 3.56% CNF at the level of 10.34% sunflower bran respectively. For the values of (CP) and (EE) there was a positive quadratic effect (P <0.05) obtaining a maximum value of 27.50% and 3.23% respectively. The inclusion of 10% sunflower meal in elephant grass silage is enough to improve the chemical composition of the silage.