Animal Feed Supplements, are mixtures of ingredients formulated to complement nutrients present in grain. When it is correctly mixed with grain, the resulting diet will meet the total nutritional needs of the animal.
Animal Feed Additives are compounds that may draw a response independent of contributions to the animal's energy, amino acid, mineral, and/or vitamin requirements. Typically these feed additives are added to diets in small amounts.
Vitamins are natural compounds that are required in very small amounts for maintenance, growth, reproduction and lactation.