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
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[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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