Sweet potato is sweet and palatable and nutritious. It is a good feed for pigs, but if it is fed improperly, the pigs are prone to reduce food, stop eating, drop or poison. Therefore, when feeding sweet potatoes, pay attention to the following points: Do not feed blindly. How much suitable sweetpotato to feed is determined by the weight, age, sex, etc. of the pig. If the amount of feed is too large, other feeds will eat less and the pigs will not receive the full nutrition they need. This will hinder growth and development. In general, piglets, sows and boars are fed less; large pigs and fattening pigs weighing more than 60 kilograms are fed as appropriate, but they should not exceed 8 kilograms per head per day. Do not carry diseased potatoes. Black-spotted diseased potato, even if boiled, steamed, roasted, etc., cannot destroy its toxicity, and it is very easy to cause poisoning when the diseased potato or its residue is fed to pigs. Pig disease caused by potato poisoning often occurs 3 to 4 days after eating, such as increased body temperature, loss of appetite, constipation, fecal dry black, globose, and often with mucus and blood. Therefore, we must remove the diseased potatoes. Don't ignore feeding methods. In order to make pigs have a good appetite, feeding should be done as little as possible and regularly quantified so as to improve the digestive capacity of the gastrointestinal tract. If you are fed with green feed, you should feed the green feed first and then feed the sweet potatoes; if you are fed with other concentrates, you should master the right proportion. If cooked, feed it in time after cooking. At the same time pay attention to the cleanliness of the utensils to prevent the storage of sweet potato rancid for too long.