Nutritional diseases in animals are multiple deficiencies Primary nutritional deficiency: one or all nutrients deficient Secondary nutritional deficiency: Due to various other reasons like starvation etc Vitamin deficiency 14 vitamins are necessary for health A, D, E, K are fat soluble and remaining are water soluble. In fat malabsorption vitamins A, D, E, K deficiencies occur. Vitamin D can be synthesized from steroids in body. Vitamin K and B esters by intestinal micro flora Niacin from Tryptophan: an essential amino acid
