Across all areas of production - feedlot, cow/calf, backgrounders or weaned calves at sale barns - animals that get sick cost producers money. Immunity issues within the animal can be demonstrated in many ways including retained placentas, days open, disease outbreaks and loss of weight. Nutrition plays an important role in maintaining an animal’s immune system, keeping them healthy and in oxidative balance. When animals perform at their full potential, producers make money.