Fishmeal is the product of steaming, pressing, drying and pulverizing whole fish or the residue after removing the edible part. Due to the different raw materials and processing methods, the nutritional composition of fishmeal varies greatly. Domestic fishmeal is mostly made from low-quality fish that are not suitable for consumption or the leftovers from the processing of fish products (fish heads, fish bones, offal and minced fish). Therefore, its quality varies with the processing of raw materials. Generally speaking, the domestic fishmeal crude protein is between 28% and 55%, crude fat is 1.5% to 15.5%, crude ash is 15.5% to 25%, calcium is 0.8% to 10.5%, phosphorus is 1.2% to 3.3%.

Fishmeal is rich in niacin, vitamin B2 and vitamin B12, vacuum-dried fishmeal also contains vitamin A and vitamin D. Imported fishmeal is divided into white fishmeal and red fishmeal. White fishmeal to cod, pollock and plaice and other raw materials processing production of fishmeal, these fishmeal in the Gulf of Alaska and other sea areas such as the production of fishing vessels, also known as the North Sea fishmeal, its crude protein content between 60% and 70%, crude fat 8% or less; red fishmeal to the coastal catchability of sardines, saury, and Pacific herring, and other raw materials, the muscles of these fish are reddish-brown, so the system is made of fishmeal for the red fishmeal, Peru and Chile are the main producers of this type of fishmeal. Peru and Chile are the main producers of this type of fishmeal. The crude protein content of red fishmeal is 61%～67.7%, crude fat is 7%～10%, and crude ash is 15%～20%. In order to ensure the quality of fishmeal, in recent years, the state of fishmeal reformulated quality standards, its physical and chemical indicators.

Fishmeal is not only rich in protein, but also the essential amino acid content of protein is complete and balanced, with high biological value and easy to digest and absorb. In addition, fishmeal is high in lysine and methionine, and rich in minerals and vitamins. Therefore, fishmeal has been recognized as the best animal protein feed source.

The content of this article comes from: China Agricultural Publishing House, "China's soil species journal"