The best example of a feed enzyme is Phytase . Most of phosphorus in plants and feed materials is not available for digestion and absorption. Rather it is bound in a compound called phytic acid. Phytase is a bacterial enzyme that can breakdown phytic acid, thus leading to better phosphorus digestion and thereby reducing the amount of phosphorus required in feed. Additionally, this will lead to less output of phosphorus in the manure.
Antioxidants help prevent the breakdown of fats and oils in feeds and animal tissues.
Currently much animal and human research is underway to determine the true benefits of antioxidants.