Raw bean curd residue is rich in crude protein, which can replace part of feed, but it can't be fed entirely with bean curd residue, because pigs need comprehensive nutrition to get fat, and raw bean curd residue can only replace part of protein feed. As for energy, minerals, vitamins, etc., it still needs to be supplemented, especially for sows, which need a lot of minerals and vitamins, and if it is lacking, it can lead to sow's lack of affection; In addition, don't feed sows too much after mating to the first trimester of pregnancy (it is easy to cause obesity and dystocia); I hope it helps you.