What nutrient is primarily responsible for providing energy in a hog's diet?

Carbohydrates are primarily responsible for providing energy in a hog's diet because they are easily digestible and can be converted into glucose, which is the main source of energy for animals. In swine nutrition, carbohydrates come from a variety of feed ingredients, such as grains, which are rich in starches. These starches break down into simple sugars in the digestive system, enabling hogs to efficiently utilize them for their daily energy needs.

While proteins are essential for growth, tissue repair, and maintenance, they do not serve as the primary energy source. Instead, they should be included in the diet to support muscle development and overall health. Vitamins and minerals, though crucial for various bodily functions, do not provide energy directly. Vitamins support metabolic processes, while minerals contribute to bone structure and enzymatic functions, but neither are energy sources on their own. Therefore, carbohydrates stand out as the key nutrient for energy supply in a hog's diet.