Culturing method for improving quality of marine fish

A culture method and technology for sea fish, which are applied in the field of raising sea fish quality, can solve the problems of decreased immunity and disease resistance of grass carp, incomplete transformation of nutrition, poor nutrient metabolism of fish, etc., so as to improve digestibility and feedstuff. Transformation efficiency, increase in muscle inosine and inosinic acid content, high yield effect

Inactive Publication Date: 2019-02-22
MARINE FISHERIES RES INST OF ZHEJIANG
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AI Technical Summary

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

Method used

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  • Culturing method for improving quality of marine fish

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preparation example Construction

[0033] The preparation method of above-mentioned organic chromium complex is: ligand and CrCl 3 ·6H 2 After mixing O, add ultrapure water, and heat the solid-phase synthesis reaction at a microwave power of 500-600w for 150-180s. After the reaction is completed, suction filter and dry to obtain the ligand of the organic chromium complex; during the synthesis reaction, add Sodium citrate and D-alanine maintain the pH of the reaction system at 5.0-6.0. 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. Activation energy, significantly speeding up the chemical reaction rate; at the same time, microwave heating has little oxidation and damage to organic ligands and chromi...

Embodiment 1

[0040] A breeding method for improving the quality of seawater fish, specifically:

[0041] 1) The aquaculture sea area should choose an area with smooth tides. The water depth in the aquaculture sea area is 20-30m when the tide is low, and the water depth is ≤45m when the tide is high. Oxygen>7mg / L, seawater velocity is 0.08-0.22m / s;

[0042]2) Throw in artificial fishing firewood, set up a floating platform frame, and then hang 8 net cages around it. The length of the net cage box is 20m, the width is 20m, and the height is 20m. The distance between the net cage and the shore is more than 200m; It is an open box body sewn with metal mesh, the mesh holes are 30mm, 15mm, 6mm;

[0043] 3) Throwing in according to the size of the fish species into large, medium and small net cages respectively, with the fish species not being able to escape the net cage as a standard; the stocking density is 0.2 fish / cubic meter;

[0044] 4) Feeding implements periodic starvation and refeeding...

Embodiment 2

[0048] A breeding method for improving the quality of seawater fish, specifically:

[0049] 1) The aquaculture sea area should choose an area with smooth tides. The water depth in the aquaculture sea area is 20-30m when the tide is low, and the water depth is ≤45m when the tide is high. Oxygen>7mg / L, seawater velocity is 0.08-0.22m / s;

[0050] 2) Throw in artificial fishing firewood, set up a floating platform frame, and then hang 10 net cages around it. The length of the net cage box is 22m, the width is 22m, and the height is 25m. The distance between the net cage and the shore is more than 200m; It is an open box body sewn by metal mesh, the mesh holes are 45mm, 20mm, 8mm;

[0051] 3) Throwing in according to the size of the fish species into large, medium and small net cages respectively, with the fish species not being able to escape the net cage as a standard; the stocking density is 0.5 fish / cubic meter;

[0052] 4) Feeding implements periodical starvation and then fe...

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Abstract

The invention provides a culturing method for improving quality of marine fish, and belongs to the technical field of mariculture. The method comprises the steps that a region with smooth tides is selected, marine fry are put into a net box which is arranged in a culturing sea area, and feed with organic chromium complexes and chitosan oligosaccharide complexes is put into the net box. The feed can take part in glycometabolism and improve the immunity function and the anti-stress capability of an animal, the flavor and muscle quality of fish can be improved, and therefore the muscle collagen protein content, collagen protein crosslinking level and muscle fat of cultured fish are closer to wild fish.

Description

technical field [0001] The invention belongs to the technical field of seawater aquaculture, and in particular relates to a cultivation method for improving the quality of seawater fish. 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 national economy. However...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/10A23K50/80A23K20/20A23K20/142A23K20/174A23K20/105A23K20/163
CPCA01K61/10A23K20/105A23K20/142A23K20/163A23K20/174A23K20/30A23K50/80Y02A40/81
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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