Mixed feed for sea-bass fish and preparation method thereof

Abstract

The invention discloses a mixed feed for sea-bass fish and a preparation method thereof. The mixed feed is made from the following raw materials in parts by weight: 35 to 45 of insect powders, 20 to 30 of a compound fermented material, 0.5 to 1 of fish oil, 10 to 20 of flour, 1.5 of calcium dihydrogen phosphate, 2 of a vitamin-mineral salt mixture, and 0.5 of choline chloride, wherein the compound fermented material is a fermented product of castor cake, rape cake and cotton cake with compound dry microbial inocula. The mixed feed is prepared by the steps as follows: mixing castor cake, rape cake and cotton cake according to a weight ratio of 1:1:1, and adding the compound dry microbial inocula composed of at least two of lactic acid bacteria, saccharomycetes, bacillus and geotrichum candidumlink strain for fermentation 2-24h, wherein the additive amount of the compound dry microbial inocula is 1% of the total weight of the fermentation raw material; and thoroughly mixing the raw materials, compounding, pelletizing and oven-drying to obtain the final product. The preparation method is simple and low in cost. The mixed feed for sea-bass fish is good in palatability and nutrition and can enhance disease resistance and stress resistance of sea-bass fish.

Description

technical field [0001] The invention relates to an artificial feed for fish, in particular to a compound feed for perch and a preparation method thereof. Background technique [0002] Perch is the main species of marine aquaculture in my country due to its fast growth, delicious taste and high economic benefits. At present, the main components of the artificial feed of perch are fish meal, bean dregs, flour, fish oil, calcium dihydrogen phosphate, multivitamins, multiminerals, choline chloride and other ingredients. The compound feed for sea bass, in addition to the conventional fish meal, bean curd and flour, etc., the compound feed for sea bass is also added with various bacteria and enzymes to make the utilization rate of the compound feed higher and the excretion of N and P less. The invention patent with the authorized announcement number CN1833543 discloses the compound feed of the perch. In addition to the conventional fish meal, soybean meal and flour, etc., the per...

AI Technical Summary

Problems solved by technology

However, at present, the amount of fishmeal in the compound feed of perch is relatively large, accounting for more than 20%, so the excretion of N and P is only large, and the research is only on nutrition and feed coefficient, and no research on disease resistance and stress resistance has been carried out.