What kind of food to make the weight of the pig heavier?

To increase a pig's weight effectively, focus on high-energy feeds that are rich in carbohydrates and fats. Diets including corn, barley, and soybean meal can promote weight gain, along with added fats or oil for extra calories. It's also beneficial to include protein sources to support muscle growth. Always ensure that the diet is balanced and meets the nutritional needs of the pig for optimal health and growth.