One, wheat bran. Wheat bran contains 8%-9% of crude fiber, and phosphorus content is 10 times that of calcium. Vitamins are richest in thiamine, niacin and choline. Wheat gluten is soft, palatability is good, there is laxative effect. Feeding livestock and poultry with wheat bran, the amount can not be too much, but can not be fed for a long time, otherwise it will easily lead to calcium deficiency in livestock and poultry. The appropriate amount of wheat bran used for feeding livestock and poultry is: no more than 15% of the diet for pigs fed; no more than 5% of the diet for chicks, and no more than 10% of diets for layer chicks. Second, rice bran. Rice bran contains rich oils and crude protein, and the ratio of phosphorus to calcium is 1.7:1. Rice bran has high energy but is prone to deterioration due to long-term storage. Therefore, fresh rice bran should be used when formulating compound feed. For formulating mixed feed for pigs, the amount of rice bran should not exceed 30%. Otherwise, the piglets will diarrhea and fattening pigs will easily form soft fat. The quality of pork is poor. Third, bean dregs. The raw soybean dregs contain antitrypsin, and the antitrypsin will hinder the digestion and absorption of the protein by the livestock and poultry, so it must be cooked and then fed, otherwise it is easy to cause diarrhea of ​​livestock and poultry. Okara lacks vitamins and minerals, so it should be properly matched with refined, roughage and green feed, and the amount should not exceed 30% of the total amount of feed. Deteriorated bean dregs can never be fed. Fourth, distillers' grains. Distillers grains are rich in crude protein, vitamin B, potassium, and phosphate, but they have low calcium and phosphorus content and alcohol residues. Therefore, they must be fed with green feed and compound feed, and should not be fed to pregnant animals. Fifth, rapeseed cake. Uneaten rapeseed cake should be soaked in warm water and then boiled, or crushed and then roasted and detoxified before feeding. Rapeseed cake can only account for a small proportion of livestock and poultry diets. Six, sweet potatoes. Sweet potato starch 16% -26%, single fed nutrient insufficiency, raw feed is not easy to digest and absorb, therefore, sweet potato should be cooked, mixed feed with feed and green feed. Seven, eucalyptus leaves, loquat leaves, willow leaves and other leaves. Can be directly used to feed cattle, sheep and other ruminants for feeding pigs, chickens need to be processed into leaf powder into the feed. Young leaves are generally freshly fed (Amorpha fruticosa and peach leaves should not be fed). A large number of collected leaves should be dried in a timely manner, or placed at a temperature of 50-60°C to be dried, crushed, and then put into a plastic bag and stored in a cool and dry place. Green leaves can also be mixed with grass made of storage. Prunus edulis, walnuts, plums, persimmons, and white poplars have bitter astringents and poor palatability. These leaves should be fed with appropriate amounts after silage or fermentation. Eight, straw seed shell. The stalks and hulls of corn, rapeseed, rice and bean crops are air-dried and processed into powder. Soak in water for 8-12 hours before feeding. After softening, mix with green feed or compound feed. Straw and husk can also be fed after alkalization, ammoniation, and green storage.