Abstract
Some kinds of dried residues made, mainly, from the waste liquor of a sweet-potato-alcohol-fermentation factory were found to contain the orotic acid and other various bases or their precursors besides ordinary nutrients. The digestibility coefficient, growth ratio, feed efficiency, and accumulation coefficient of protein of the dried residues and the orotic acid were compared. Discussing the results of these experiments the presence of so called UGF other than the orotic acid has been concluded.
