Sweet potato residue can be fed to pigs. Sweet potato residue is a high-quality feed for fattening pigs. It can be eaten alone or mixed with other food, such as corn, green grains, or grass and leaves. It can also be dried, crushed and mixed with bran for feeding.

Sweet potato dregs can be dried using a sweet potato dregs dryer to deal with sweet potato dregs in a targeted manner. The output is large, the cycle is short, the labor intensity is low, and the dried sweet potato dregs are evenly wet and high in quality. Sweet potato residue dryers usually have a drum structure. Through mechanical dehydration-tumble drying-air drying and other technological processes, the moisture content of sweet potato residue is quickly reduced to about 12, which can meet the water content standard of sweet potato residue for long-term storage or feed processing.