Feed additive capable of improving quality of marine culture fish and preparation method thereof

A feed additive and seawater farming technology, which is applied in the field of feed additive and its preparation to improve the quality of seawater cultured fish, can solve the problems of grass carp immunity and disease resistance decline, incomplete nutrient transformation, poor nutrition metabolism of fish, etc. Achieve the effects of improving digestibility and feed conversion efficiency, increasing muscle inosine and inosinic acid content, and high yield

Inactive Publication Date: 2019-02-22
MARINE FISHERIES RES INST OF ZHEJIANG
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Problems solved by technology

However, feeding a large amount of high-protein and high-energy bait makes the fish passively change their feeding habits, and their body functions cannot adapt to the change of their feeding habits for a while. If they eat more bait than their nutritional needs for a long time, the nutrition cannot be completely transformed, and the body fat will accumulate too much. Too much, leading to symptoms of malnutrition metabolism in fish, resulting in the decline of immunity and disease resistance of grass carp, and there are also problems such as decline in fish meat quality and poor taste

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  • Feed additive capable of improving quality of marine culture fish and preparation method thereof

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[0045] The above-mentioned specific steps for preparing organic chromium complexes by microwave heating solid-phase synthesis method are as follows: ligand and CrCl 3 ·6H 2 Add ultra-pure water after mixing O, microwave heating solid-phase synthesis reaction is completed, suction filtration, and drying to obtain the ligand of the organic chromium complex. The preparation method uses microwave heating solid-phase synthesis technology, which is several times or even thousands of times faster than traditional heating. Microwave heating can increase the activity of reactant molecules, increase the collision frequency of reactant molecules, increase the average energy of the reaction, and reduce the need for reaction. The activation energy significantly accelerates the chemical reaction rate; at the same time, microwave heating has little oxidation and damage to organic ligands and chromium ions, which protects the stability of the material structure and improves the yield of organ...

Embodiment 1

[0050] A feed additive for improving the quality of fish cultured in seawater, comprising an organic chromium complex, the organic chromium complex contains at least two amino acid ligands; the at least two amino acids are glycine and proline; the organic chromium complex complex Bits also include citric acid.

[0051] Above-mentioned feed additive also comprises chitosan oligosaccharide complex; Chitosan oligosaccharide complex is made of chitosan and Cu 2+ Ions are obtained by chelation reactions.

[0052] The weight ratio of organic chromium complex and chitosan oligosaccharide complex in the above-mentioned feed additive is 1:2.2, and the addition amount of this feed additive in feed is 0.17mg / kg.

[0053] A method for preparing a feed additive for improving the quality of seawater cultured fish, comprising:

[0054] The concrete steps that adopt microwave heating solid-phase synthesis method to prepare organic chromium complex are: take by weighing 2.1g glycine, 1.4g pr...

Embodiment 2

[0056] A feed additive for improving the quality of fish cultured in seawater, comprising an organic chromium complex, the organic chromium complex contains at least two amino acid ligands; the at least two amino acids are methionine and cysteine; the organic chromium complex contains Ligands also include niacin.

[0057] Above-mentioned feed additive also comprises chitosan oligosaccharide complex; Chitosan oligosaccharide complex is made of chitosan and Ce 3+ It is obtained by chelation reaction.

[0058] The weight ratio of organic chromium complex and chitosan oligosaccharide complex in the above-mentioned feed additive is 1:2.5, and the addition amount of this feed additive in feed is 0.34mg / kg.

[0059] A method for preparing a feed additive for improving the quality of seawater cultured fish, comprising:

[0060] The specific steps for preparing organic chromium complexes by microwave heating solid-phase synthesis method are as follows: weigh methionine, cysteine, nicot...

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Abstract

The invention provides a feed additive capable of improving the quality of marine culture fish and a preparation method thereof, and belongs to the technical field of marine culture. The feed additivecomprises an organic chromium complex which contains at least two kinds of amino acid ligands, wherein the at least two kinds of amino acids are selected from methionine, cysteine, alanine, glycine,proline, glutamic acid or histidine. The preparation method comprises the following steps: preparing the organic chromium complex by a microwave heating solid phase synthesis method, and mixing the organic chromium complex with a chitosan oligosaccharide complex to obtain the feed additive, wherein sodium citrate and D-alanine are added in the microwave heating solid phase synthesis reaction. Thefeed additive provided by the invention can participate in carbohydrate metabolism in bodies, improve the immune function and anti-stress ability of animals, and improve the flavor and muscle qualityof fish to be more approximate to wild fish; and the preparation method has low energy consumption and high yield, and the prepared organic chromium complex has moderate stability.

Description

technical field [0001] The invention belongs to the technical field of mariculture, and in particular relates to a feed additive for improving the quality of mariculture fish and a preparation method thereof. Background technique [0002] Fish plays an important role in nutrition, it is rich in different vitamins (D, A and B) and minerals (including calcium, iodine, zinc, iron and selenium), fish is easy to digest high quality rich in all essential amino acids The source of protein, providing human beings with rich animal nutrition protein. At present, mariculture has increased the output of aquatic products, contributed to economic growth, and relieved the fishing pressure on natural fishery resources to a certain extent. Since the 1990s, the production of marine fish and shellfish in my country has increased substantially, and the development of the mariculture industry has made remarkable achievements, which has greatly enhanced the status of marine fisheries in the nati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K50/80A23K20/20A23K20/142A23K20/174A23K20/105A23K20/163
CPCA23K20/105A23K20/142A23K20/163A23K20/174A23K20/30A23K50/80
Inventor 詹炜陈睿毅楼宝刘峰谢庆平王立改谭朋
Owner MARINE FISHERIES RES INST OF ZHEJIANG
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