Turkey Diets differ from the Turkey Dinners because they do not contain fruit or vegetable matter. Carnivora Whole Animal Turkey Diet is high in protein and lower in fat than most red proteins. It provides a rich source of iron, zinc, phosphorus, potassium and B vitamins. In terms of minerals, turkey is richest in selenium. Zinc, copper, phosphorus, magnesium, potassium, and iron are also provided by this food in noteworthy amounts. Turkey is a good protein source as part of a varied diet. Turkey contains more protein per ounce than other meats. The white meat of turkey is generally considered healthier than dark meat because of its lower saturated fat content, but the nutritional differences are smaller.