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

A growth-promoting, tilapia technology, applied in the field of feed, can solve the problems of limited usage, unfavorable duckweed feed, heavy fat metabolism load, etc.

Pending Publication Date: 2021-05-28
INST OF TROPICAL BIOSCI & BIOTECH CHINESE ACADEMY OF TROPICAL AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0025] Add the growth-promoting tilapia feed of duckweed dry powder, according to the ratio of parts by weight, including the raw material formula in the following table:

[0026]

[0027]

[0028] Among them, the dried duckweed powder was dried at 55°C, steam-exploded at 1.0Mpa for 80s, sieved, and cellulase liquid was added according to the ratio of material to liquid at 1:0.35g / ml, and statically placed at 48°C. The dried duckweed powder was obtained after being degraded for 26 hours; the cellulase solution was produced from Aspergillus niger, and Aspergillus niger was purchased from China General Microorganism Culture Collection and Management Center, No. 3.3928.

[0029] The preparation method of above-mentioned tilapia feed comprises the steps:

[0030] Weigh duckweed dry powder, fish meal, corn gluten meal, secondary powder, first-grade soybean meal, first-grade cottonseed meal, cassava, peanut kernel meal, brewer's grains and malt root according to the formula co...

Embodiment 4

[0032] A growth-promoting tilapia feed, comprising the following raw materials in parts by weight: 36.5 parts of duckweed dry powder, 5.5 parts of fish meal cp64.5%, 12.5 parts of corn gluten powder cp60%, 0.5 part of Scutellaria barbata extract, 9 Grain powder, 8 parts of first grade soybean meal, 8 parts of first grade cottonseed meal, 5 parts of cassava, 6 parts of peanut kernel meal, 3.5 parts of brewer's grain, 12 parts of malt root, 4 parts of soybean oil, 1 part of table salt and 3 parts of preservative mix;

[0033] Among them, duckweed dry powder is dry duckweed powder obtained by steam explosion treatment under a pressure of 1.4Mpa, and the dry duckweed powder is obtained by standing and degrading cellulase solution at 53°C for 30 hours; the cellulase solution is produced from Aspergillus niger, and Aspergillus niger is purchased from China General Microorganism Culture Collection Management Center, No. 3.3928. Specifically:

[0034] (1) Get fresh duckweed, wash aw...

Embodiment 5

[0041] The difference between this example and Example 4 is that in the tilapia feed formula, the duckweed dry powder is not pre-treated. That is, take fresh duckweed, wash away impurities, filter out water, dry duckweed at 65° C. in a dryer, and mechanically crush the dried duckweed powder with a crusher.

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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...

Claims

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Application Information

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IPC IPC(8): A23K50/80A23K10/30A23K10/22A23K20/147A23K10/37A23K10/38A23K20/158A23K10/14A23K40/10
CPCA23K50/80A23K10/30A23K10/22A23K20/147A23K10/37A23K10/38A23K20/158A23K10/14A23K40/10Y02P60/87Y02A40/818
Inventor 韩冰莹张家明陈婷于博涵付莉莉谭德冠孙雪飘
Owner INST OF TROPICAL BIOSCI & BIOTECH CHINESE ACADEMY OF TROPICAL AGRI SCI
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