Valor nutricional da aveia branca URS Guapa sob diferentes níveis de nitrogênio

Abstract

The southern region of Brazil, has a subtropical climate, requiring forage plants that have good productivity and also to adapt to the climatic conditions of the region. In this region, use is made of cold season grazing, where it is an alternative to have a reduction in the absence of forage. The Avena spp., is among the most widely used forage for ruminant feed, because it has a good adaptation to the climate and high nutritional quality. The experiment aimed to evaluate the nutritional value of oat URS Guapa in different nitrogen levels, so we can indicate food source for ruminates. The work performed in the field at the Universidade Tecnológica Federal do Paraná (UTFPR) - Campus Dois Vizinhos at unit teaching and search (UNEP) in the period April to September 2013. The experimental area consisted of nine plots of 24m² (3 x 8m), divided into four blocks, with spacing of 0.5 m, totaling an area of 96m. After deployment, made a cut pattern when it reaches about 25 cm. The next cuts are carried out every 21 days, saving one time to regrowth of 10 cm above the ground. The plots were subdivided into areas of 6m2, where each plot received a different dose of 0, 60, 120 or 240 Kg N.ha¹ after each cut made. The chemical analyzes were performed at the Bromatology Laboratory of UTFPR - Campus Two neighbors which were insoluble neutral detergent fiber (NDF), insoluble fiber in acid detergent (FDA), determination of dry matter (DM), mineral matter (MM) , ether extract (EE) and crude protein (CP). As a result the crude protein was influenced by treatment, so was made robust regression of PB as a function of N levels, with the transformed data while the others were not statistically significant. The increase in nitrogen fertilizer levels resulted in increased CP, demonstrating the potential for improving animal performance during the winter period, both for meat production, such as for milk.