Growth-promoting tilapia mossambica feed added with duckweed dry powder and preparation method thereof

Abstract

The invention provides a growth-promoting tilapia mossambica feed added with duckweed dry powder and a preparation method thereof. The feed comprises 35-38 parts of duckweed dry powder, 4-7 parts of fish meal, 12-13 parts of corn protein powder, 0.2-0.6 part of a sculellaria barbata extract, 8-10 parts of wheat middling, 6-10 parts of first-grade soybean meal, 6-10 parts of first-grade cottonseed meal, 4-6 parts of cassava, 4-8 parts of peanut kernel meal, 3-4 parts of brewer's grains, 11-13 parts of malt roots, 3-5 parts of soybean oil, 0.8-1.2 parts of table salt and 2.5-3.5 parts of a premix. According to the tilapia mossambica feed prepared by the invention, the mass increase rate, the fatness, the viscera-body ratio and the specific growth rate of tilapia mossambica can be remarkably increased, the growth and development of tilapia mossambica fries are promoted, the body color is brighter, the liver is stably developed, the risk of fatty liver is reduced, and the more efficient utilization of the duckweed in the tilapia mossambica feed is realized.

Description

technical field [0001] The invention relates to the technical field of feed, in particular to a growth-promoting tilapia feed added with duckweed dry powder and a preparation method thereof. Background technique [0002] Tilapia belongs to the genus Tilapia of the family Cichlidae, native to Africa, and is also known as apple fish, African crucian carp, and South Sea crucian carp. It grows fast, has a variety of food habits, strong disease resistance, and strong adaptability. It is suitable for high-density intensive farming in freshwater or brackish water ponds and cages. The meat is delicious and tender, with few thorns, and is deeply loved by consumers. With the development of tilapia farming industry, the demand for tilapia feed is also increasing. The main source of protein in aquatic animal feed is fishmeal, but its output is decreasing year by year, and excessive use will cause phosphorus pollution, so. Feed protein sources are becoming increasingly scarce, so that h...

AI Technical Summary

Problems solved by technology

[0003] The protein content of duckweed is comparable to that of soybean as a protein feed resource for livestock and poultry, and its amino acid composition is synergistic. It is a promising plant protein resource. However, duckweed is used as a protein source for compound feed. When used in the breeding of aquatic animal seedlings, the cultivation effect of the fry is greatly reduced, especially for the tilapia bony fish, it is necessary to control the liver-to-body ratio between 1 and 2%. However, if too much duckweed is used to replace the fishmeal protein source, the fat metabolism load of the hepatopancreas of the fry is likely to be overloaded, resulting in hepatomegaly. Therefore, the amount of duckweed used in the compound feed of tilapia It has been greatly restricted, which is not conducive to the wider application of duckweed feed in the aquaculture industry, and makes up for the shortage of protein sources in aquatic animal feed

Images