Mixed plant protein fish feed as well as preparation method and application thereof

Abstract

The invention discloses a mixed plant protein fish feed as well as a preparation method and an application of the mixed plant protein fish feed. The mixed plant protein fish feed is prepared from the following raw materials by fermenting: a mixture of rapeseed meals and cotton meals, a bacillus subtilis fermenting solution, an enterococcus faecalis fermenting solution, an Aspergillus niger fermenting solution, a brewing yeast fermenting solution and an inorganic salt. The mixed plant protein fish feed is obtained by mixing and fermenting four bacteria including bacillus subtilis, enterococcusfaecalis, Aspergillus niger and a brewing yeast, so that an enzyme system is complete, the fermenting efficiency and the conversion are high, and the other-bacteria resisting capability is strong. The rapeseed meals and the cotton meals are mixed and are fermented and a material amino acid is more balanced; and the cost of raw materials is lower than that of the soybean meals. The yields of smallpeptides and free amino acids of the mixed plant protein fish feed can reach to 15.5% and 0.94%, respectively; and the removing rates of phytic acid, tannin and gossypol can reach to 87%, 78.2% and 100%, respectively. A fish feeding test result shows that after the mixed plant protein fish feed partially replaces fish powder or the rapeseed meals in the feed, the growth of fish can be obviously accelerated.

Description

technical field [0001] The present invention relates to fish feed, in particular to a mixed vegetable protein fish feed made by mixed fermentation of miscellaneous dregs and various microbial strains and a preparation method thereof. The present invention also relates to the application of the mixed vegetable protein fish feed as fish feed, which belongs to aquatic feed Raw material field. Background technique [0002] The global consumption of aquatic products is increasing year by year, and the dietary structure is changing. However, global marine fishing is limited, and the supply of aquatic products is mainly based on farmed aquatic products. China is the largest aquaculture country in the world. The total output of aquatic products accounts for 35% of the world, of which the output of aquaculture aquatic products accounts for about 70% of the world. While the consumer demand for aquatic products is growing rapidly, China's aquaculture water resources are showing a dow...

AI Technical Summary

Problems solved by technology

[0008] The vegetable protein feed prepared by the existing miscellaneous meal fermentation technology mostly uses single bacteria or two strains of mixed fermentation to process the miscellaneous meal. The enzyme system is relatively simple, the fermentation speed is slow, the raw material cost of soybean meal is high, and the cost is restricted after fermentation. Moreover, Single rapeseed meal and cotton meal amino acid imbalance, not conducive to popularization and application

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