DDGS is a byproduct of ethanol production, and feeding it to livestock can provide a sustainable disposal method and offset some of the cost increase of grain for farmers. DDGS is a source of energy and protein, and trials were run in Ontario to see the effect feeding up to 20% had on pig performance, and if there were any economic benefit.  The trials found no change in performance as measured by average daily gain, feed intake, feed efficiency, and carcass characteristics. However, additional literature searches showed that feeding 30% DDGS increased feed efficiency, and other studies show decreased ADG and feed intake with increased DDGS inclusion.