Amylolytic Enzyme in Rehydrated Corn and Sorghum Grain Silage in the Diet of Ears

Abstract Aimed of this work was to evaluate rehydrated corn and sorghum grains silages, with and without α-AMYLASE, on fermentation profile, nutritional value, digestion and metabolism on diets for sheep. Two experiments were conducted. In the first experiment 28 silos were divided into: 1- RSGS (rehydrated sorghum grain silage); 2- RSGS+A (rehydrated sorghum grain silage + amylase,); 3- RCGS (rehydrated corn grain silage); 4 RCGS+A (rehydrated corn kernel silage + amylase). In experiment II, 12 lambs were distributed in: RSGS; RSGS+A; RCGS; RCGS+A. In experiment I, there was an effect of grain x enzyme interaction for GL MN. The enzyme reduced the NFC content. In experiment II intake of DM kg/day was not affected by the starch content in the diet, with an average of 1.2 kg/day meaning that the type of grain and the enzyme had no influence on the intake of animals. There was an interaction for the intake of starch (kg/day), blood urea and N-NH 3. Lambs fed with RCGS+A had a higher concentration of ruminal ammonia. The use of enzymes improved the fermentation profile of the silages. RSGS can replace RCGS in sheep feed without modifying nutrient intake and digestibility.