The purpose was to evaluate the effect of extruded roughage Foragge® with different additives on intake, digestibility nutrients and nitrogen balance sheep. Twenty adults, non-pregnant ewes average weight 68 kg were used. treatments (essential oil, virginiamycin, unpurified inactive yeast, tannin purified yeast). design in randomized blocks. means contrasted by SNK test, fecal score tested Krus...