Environment-friendly and pollution-free feed for longsnout catfish and preparation method of feed

Abstract

The invention discloses environment-friendly and pollution-free feed for longsnout catfish. The environment-friendly and pollution-free feed comprises raw materials in parts by weight as follows: 45-65 parts of fish meal, 20-30 parts of shrimps, 15-45 parts of sargassum, 2-10 parts of fish oil, 1-5 parts of corn oil, 15-25 parts of bean pulp, 10-18 parts of rapeseed meal, 10-18 parts of high-gluten flour, 5-15 parts of corn flour, 2-10 parts of wheat bran, 5-15 parts of puffed sweet potato flour, 0.2-0.8 parts of glycine betaine, 8-15 parts of an EM (effective microorganism) bacterium liquid, 1-5 parts of soybean phospholipid and 8-16 parts of premix. The feed is prepared with the process as follows: fish meal, shrimps, sargassum, the bean pulp, the rapeseed meal, the high-gluten flour, the corn flour, the wheat bran and the puffed sweet potato flour are crushed and stirred in the proportion, the fish oil, the corn oil, the glycine betaine, the EM bacterium liquid, the soybean phospholipid and the premix are stirred continuously, water is added until the water content of the system is 20wt%-40wt%, steam is introduced for curing, granulating and cooling are performed, and the environment-friendly and pollution-free feed for the longsnout catfish is prepared. The feed is non-toxic, harmless and environment-friendly and cannot cause pollution to people, the longsnout catfish and water areas where the longsnout catfish live, the fatality rate of the longsnout catfish is low, and the growth speed is high.

Description

technical field

[0001] The invention relates to the technical field of aquatic feed, in particular to a green pollution-free feed for catfish and a preparation method thereof. Background technique

[0002] Catfish is a freshwater fish with the advantages of miscellaneous food habits, fast growth, wide adaptability, and strong disease resistance; its meat is tender, rich in protein and vitamins, and delicious in taste. High-quality fish favored by consumers. At present, most catfish adopt an intensive farming model. High stocking density is the basis for obtaining high breeding returns. Feeding high-grade feed can promote the growth of catfish, shorten the breeding cycle, and achieve early market launch. However, in the process of long-term feeding of high-grade feed to ensure that the catfish has a good growth advantage, the phenomenon of catfish’s physical weakening is relatively serious. The main symptoms are loss of appetite, dull body color and luster. When it is stable...