Method improving wheel animalcule growth reproduction capacity and intensifying action of wheel animalcule working as bait nutrient

A technology of fecundity and rotifers, applied in animal feed, animal feed, application, etc., can solve the impact of aquatic animal survival rate, growth rate and disease resistance, cannot meet the huge demand of aquatic products, and limit the supply of single-cell microalgae To achieve the effect of increasing comprehensive production efficiency, improving aquaculture efficiency, and improving growth and reproduction capacity

Inactive Publication Date: 2016-12-14
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Abstract
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AI Technical Summary

Problems solved by technology

At present, in artificial aquaculture, neither naturally captured rotifers nor artificially raised rotifers can meet the huge demand for aquatic products. At the same time, the supply of single-celled microalgae in artificially cultured rotifers is limited. Rely on yeast, soy milk, wheat bran, etc.
However, the above-mentioned substances only meet the energy requirements of rotifers, but cannot provide natural active substances such as astaxanthin, carotenoids, EPA and DHA polyunsaturated fatty acids in sufficient quantities. The demand for the above-mentioned active substances by crabs, crabs and other aquatic animals has seriously affected the survival rate, growth rate and disease resistance of aquatic animals, thus restricting the further development of the aquaculture industry

Method used

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  • Method improving wheel animalcule growth reproduction capacity and intensifying action of wheel animalcule working as bait nutrient

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Get 3 10-liter culture water tanks, add 8 liters of 25‰ seawater therein, and inoculate isodense rotifers (16 / ml), and fully aerate and cultivate for 8 days. Wherein add 3.0g fresh Nannochloropsis mud every day in an incubator; And add the fresh algae mud of equal weight Nannochloropsis and 1.5% Haematococcus fresh algae mud mixed product in another incubator, wherein The mass ratio of Chlorella and Haematococcus is 4:1 (that is, Haematococcus accounts for 20% of the total bait); figure 1 ).

[0026] The results showed that the growth and reproduction of the rotifers in the microalgae-fed group 2 was better than that in the yeast-fed group, and the rotifers in the group fed with Nannochloropsis and Haematococcus had the best growth and the fastest reproduction rate, and the density of rotifers The highest, containing 160 rotifers per milliliter, about 60% higher than the Nannochloropsis group fed alone (100 per milliliter); while the group fed yeast alone had the slowe...

Embodiment 2

[0030] Take another 3 10-liter culture water tanks, add 8 liters of 25‰ seawater therein, and inoculate the rotifers of isodensity (15 / ml), and fully aerate and cultivate for 6 days. Wherein, add 3.0g fresh Nannochloropsis algae mud (approximately 0.86g dry weight) to one incubator every day; Chlorella algae residue mixed product, wherein, the added amount of Chlorella accounts for 70% of the total added mass, and the added amount of Haematococcus accounts for 30% of the total added mass; in addition, add 3.0g fresh Yeast, as a control.

[0031] The experimental results show a similar effect to that of Example 1: the growth and reproduction effect of the rotifers fed with the second group of microalgae is significantly better than that of the yeast group fed alone, wherein the rotifers fed with Nannochloropsis and Haematococcus algal residues grow The best, the fastest reproduction rate, the highest rotifer density, 100 rotifers per milliliter, which is about 60% higher than ...

Embodiment 3

[0034]Further use of Haematococcus broken wall algae powder containing 4.0% astaxanthin and 2.0% Haematococcus broken wall fresh algae mud were mixed with Nannochloropsis respectively, and the above-mentioned rotifer feeding experiment was carried out again. Also obtain similar results similar to implementation cases 1 and 2. Among them, after Haematococcus algae powder and algae mud are broken, the particles are smaller, which is more conducive to the feeding and absorption of rotifers, and the growth and reproduction of rotifers and eggs are increased. There was an increase in growth, reproduction and fecundity, but no statistically significant difference was observed between the two.

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Abstract

The invention belongs to the field of aquatic products and relates to a method improving wheel animalcule growth reproduction capacity and intensifying action of wheel animalcule working as bait nutrient. During cultivation process of aquatic bait wheel animalcules, growth reproduction capacity and an action of wheel animalcule working as bait nutrient can be improved with addition of micro-algae biological products enriched with natural biological active substance. The micro-algae enriched with biological active substance working as pure-natural biological products, aquatic product naturalness, safe use and toxic and side effect-avoidance can be guaranteed via food chain delivery; the micro-algae does not contains various biological active substance, but also is enriched with polysaccharide and protein and other nutrients and substance; and production effect can be comprehensively improved. Anti-oxidization performance, anti-radiation capacity and nutritive effect can be improved by the use of the natural active substance; survival rate, growth speed and anti-disease capacity of seedlings of bred aquatic animal fish, shrimps, crabs and other aquatic animals can be improved; and aquatic culturing efficiency can be comprehensively improved.

Description

technical field [0001] The invention belongs to the field of aquatic products and relates to a method for improving the growth and fecundity of rotifers and strengthening bait nutrition. Background technique [0002] With the continuous development of society and the improvement of living standards, people's demand for aquatic products such as fish, shrimp and crab is increasing. In addition, the catch of the above-mentioned aquatic products is decreasing year by year. It is important to vigorously carry out artificial breeding to provide more aquatic products to meet social needs. The main trends of current and future aquaculture development. [0003] However, in the current culture of fish, shrimp, crab and other aquatic animals, especially in the nursery stage, the larvae of the above-mentioned aquatic animals generally have a series of problems such as low hatching survival rate, slow growth, low immunity or disease occurrence or even death. question. One of the import...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K67/033A23K50/80A23K10/20
CPCA01K67/033
Inventor 刘建国李虎董乃畅
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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