Aspectos produtivos e nutricionais de cereais de inverno em regimes de corte para ensilagem

The objective of this study was to evaluate the effect of three vegetative stage cuts schemes (Without cut; one cut and two cuts), production and nutritional aspects of five winter cereals, harvested for silage production. Cereals used were the wheat (Triticum aestivum cv. BRS Blue Jay), barley (Hordeum vulgare CV. BRS Brau), oats (Avena sativa cv URS Guara), black oats (Avena strigosa cv. Embrapa 139) and triticale (X Triticosecale cv. IPR 11). For the mass of total dry forage, the increase in the number of cuts generated reduction in production for all cereals. The triticale presented the greatest productive stability, since there were no differences (P u003e 0.05) for the blunt (12,317 kg DM/ha) and with a cut (11,944 kg DM/ha). The scheme of cuts influenced the morphological components, because there was a reduction of the culm and leaf percentages and increased the percentage of cob and the amount of senescent leaves towards the leaves. The TDN levels were not influenced negatively by cutting regimes, with the exception of white oats. For cereals, barley evaluated presented minor values (P u003c 0.05) of ADF (333.5; 359.2 and 314.2 g/kg DM) and higher values of TDN at the time, independent of the silage cutting regime. Triticale can be used in a vegetative stage and silage production.