PSIX-10 The Effect of NDF from Forage Levels on Metabolize Energy Intake and Fecal Starch in Nelore Cattle

Abstract The effect of forage in finishing cattle has an important role. Although, it is not common to conduct research this subject with Nelore cattle. goal study was evaluate the NDF from on ME and FS All experiment had been approved by ESALQ animal care council. diets were composed corn silage, soybean meal, citrus pulp, ground flint corn, urea, chloride potassium premix. In data 20 Bulls initial weight 420kg ± 30 kg used. animals received 5 for 105 days that switched every 21 days. started 15% followed 12%, 9%, 6% 3%. calculated ME=0.82 DE (NRC, 1976; Garret, 1980), during entire period time, using Grow Safe system. Feces taken just after defecated. feces among those treatments 2 periods time each treatment d diet. Thereafter, measured NIRS equation developed Caetano et al. (2009). A proc mixed model used perform statistical analyses SAS. There a quadratic intake, P< 0,0001. However, regarding there any due level. Thereby, intake depends directly levels. It might be explained hepatic oxidation theory (Oba Allen, 2000) as well rumen fill (Mertens 1992). Moreover, outcomes related levels different than expected. Those results (2015) De Melo (2019), both corn.