According to our understanding, fish meal is a high-protein feed material that uses one or more kinds of fish as raw materials, and is processed by oil removal, dehydration, and crushing. Domestic fish meal protein is more than 55%; it does not contain indigestible substances such as cellulose, has high crude fat content, and has a high effective energy value; rich in B vitamins, calcium, phosphorus, iodine, zinc, iron, selenium content It is very high and the proportion is appropriate. All phosphorus is available phosphorus and is an important source of minerals in the process of animal growth and development; fish meal also contains an unknown factor that can promote animal growth and development. Fish oil contains triglycerides, phosphoglycerides, lipids, fat-soluble vitamins, protein degradation products, etc., and is also rich in n-3 polyunsaturated fatty acids, which integrates nutrition, palatability and functionality. Nutritional feed, if fish oil is put into animal feed, it can also help animals grow and develop.