Vitamins are required in trace amounts micrograms to milligrams per day in the diet for health, growth and reproduction. The amount of vitamins that the animals require vary at different stage of growth, performance level, environment conditions and the amount of stress in the farms. In general, vitamins in feed are generally inadequate, it is important that animals are provided with vitamin additives to meet their requirements. Omission of a single vitamin from the diet of a species that requires it will result in poor performance, reproduction and immune defense.