Preparation method of American eel feed

Abstract

The invention provides a preparation method of an American eel feed. The preparation method comprises the following steps: fish meal, flour, fermented soybean meal, citric acid, composite minerals andcomposite vitamins are mixed to form base powder; the base powder is conditioned, the conditioned base powder is dried, and feed particles are obtained; according to the present invention, the fish oil is sprayed onto the outer surface of the feed particle to obtain the American eel feed finished product, the fermented soybean meal in the obtained American eel feed finished product can improve the immunity of the American eel, and the citric acid can promote the phosphorus absorption of the American eel so as to reduce the phosphorus emission; the external face of the feed particle is sprayedwith the fish oil, the grease content of the feed is increased, and the protein content of the feed can be reduced, so that the proportion of the components of the feed is more scientific and reasonable, and the emission of ammonia nitrogen is reduced.

Description

technical field [0001] The invention relates to the field of aquatic fish feed, in particular to a preparation method of American eel feed. Background technique [0002] The American eel is a species of fish in the family Anelidae. The back is brown and the belly is tawny. It is very similar to the European eel, but the American eel's need for oil is much greater than other eels. At present, most American eel feeds on the market adopt the formula of Japanese eel and European eel. The fishmeal content is high and calcium dihydrogen phosphate is added. The feed contains a large amount of non-absorbable calcium and phosphorus, which the eel cannot absorb, and the non-absorbable phosphorus is discharged into the water. , serious environmental pollution. [0003] Disadvantage 1: American eel feed contains high non-absorbable phosphorus, and the phosphorus that American eel cannot absorb is directly discharged into the water, polluting the environment. [0004] Disadvantage 2:...

AI Technical Summary

Problems solved by technology

At present, most American eel feeds on the market adopt the formula of Japanese eel and European eel. The fishmeal content is high and calcium dihydrogen phosphate is added. The feed contains a large amount of non-absorbable calcium and phosphorus, which the eel cannot absorb, and the non-absorbable phosphorus is discharged into the water. , serious environmental pollution

[0003] Disadvantage 1: American eel feed contains high non-absorbable phosphorus, and the phosphorus that American eel cannot absorb is directly discharged into the water, polluting the environment

[0004] Disadvantage 2: Most American eel feeds on the market are high in protein and low in fat, which is higher than the protein requirement of American eels. American eels are unbalanced in nutrition and incompletely digested, resulting in too high ammonia nitrogen content in the water, which cannot meet the national sewage discharge standards

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