Immune System, Nutrition and Animal Productivity. Immune System and Nutrients for Immune Cell Development. Prooxidants and Antioxidants. Oxidative Stress Combating Potential of Plant Phenols. Immunomodulatory Nutrients to Support Gut Health. Amino Acids and Immunity. Fatty Acids and Immunity. Selenium and Immunity. Vitamin D and Immunity. Ageing and Immune System. Transition Phase and Immune System.