Soybean meal and cottonseed meal are primarily fed to provide what nutrient?

Soybean meal and cottonseed meal are primarily included in animal feed to provide protein, making this the correct answer. These meals are byproducts of oil extraction processes from soybeans and cottonseeds, respectively, and they are rich in protein content.

Protein is essential for the growth, repair, and maintenance of body tissues, as well as for the production of enzymes and hormones. Animals, particularly those in production such as cattle or poultry, require a high-protein diet to support their nutritional needs, especially during growth phases or when producing meat, milk, or eggs.

Fat, carbohydrates, and vitamins are also crucial nutrients in animal diets, but they are not the primary contribution of soybean and cottonseed meals. While these meals may contain small amounts of fats and carbohydrates, their primary value lies in their high protein concentration, making them a staple component in protein supplements for livestock feed.