Marine fish black porgy net cage overwintering breeding method

A culture method and technology for marine fish, which are applied in fish farming, climate change adaptation, animal feed, etc., can solve the problems of farmers' economic loss, affecting the economic benefits of black seabream cage culture, death, etc., and achieve good social value and Economic benefits, the effect of improving anti-stress ability and immune antioxidant ability, and improving economic benefits

Active Publication Date: 2019-02-22
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Dissolved oxygen can be below 6mg/L, and the minimum should not be lower than 3mg/L, otherwise it will cause a large number

Method used

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  • Marine fish black porgy net cage overwintering breeding method
  • Marine fish black porgy net cage overwintering breeding method

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Seawater fish black sea bream cage overwintering culture method, put the black sea bream in the net cage placed in the sea, and feed the compound feed containing asparagus fermented product after successful domestication. Asparagus fermented product contains high F value oligopeptide and Active agar oligosaccharides.

[0022] The preparation method of the above-mentioned asparagus fermented product is as follows: inoculate Bacillus subtilis in a solution containing 4wt% asparagus dry algae powder and pH7.0 according to the inoculation amount of 10%, then add sucrose acetate isobutyrate and orange peel Vegetarian, fermented, dried, and sieved to obtain the asparagus fermented product. As a natural polysaccharide, asparagus non-starch polysaccharide has high viscosity and poor solubility, which limits its use in industry. Fermentation treatment can degrade asparagus, remove anti-nutritional factors of asparagus, and obtain highly active agar oligosaccharides and The smal...

Embodiment 2

[0030] The seawater fish black sea bream cage overwintering culture method, the specific steps are:

[0031] 1) Select a sea area with a salinity of 25‰, a pH of 8.2, and dissolved oxygen ≥ 5mg / L;

[0032] 2) Select 40-mesh open cages with a size of 3.0m×4.0m×4.0m, fix them with wooden stakes around them, and tighten the upper end with steel wire ropes. 3m, the cages in the row are spaced 1m apart, every 1hm 2 Set up 600 net cages on the water surface;

[0033] 3) According to the stocking density, it is 12kg / case to stock the black bream in the net cage placed in the sea area;

[0034] 4) Do not put in any bait within 3 days after the black sea bream is put into the box, so that it is in a state of starvation. On the 4th day, start to feed the compound feed of 1.5% of the body weight of the black sea bream, and domesticate it for 1-2 days;

[0035] 5) The feeding method is: feeding compound feed including the following ingredients and their weight parts: 22 parts of fish m...

Embodiment 3

[0039] The seawater fish black sea bream cage overwintering culture method, the specific steps are:

[0040] 1) Select a sea area with a salinity of 30‰, a pH value of 8.6, and dissolved oxygen ≥ 5mg / L;

[0041] 2) Select 50-mesh open cages with a size of 3.0m×4.0m×4.0m, fix them with wooden stakes around them, and tighten the upper end with wire ropes. 3m, the cages in the row are spaced 1m apart, every 1hm 2 Set up 600 net cages on the water surface;

[0042] 3) According to the stocking density, it is 13kg / box to stock the black bream in the net cage placed in the sea area;

[0043] 4) Do not put in any bait within 3 days after the black sea bream is put into the box, so that it is in a state of starvation. On the 4th day, start to feed the compound feed of 2.0% of the body weight of the black sea bream, and domesticate it for 1-2 days;

[0044] 5) The feeding method is: feeding compound feed including the following ingredients and their weight parts: 25 parts of fish me...

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Abstract

The invention provides a marine fish black porgy net cage overwintering breeding method, and belongs to the technical field of aquaculture and comprises the following steps: breeding black porgy in anet cage placed in a sea area and feeding the black porgy with compound feed containing asparagus ferment after successful feeding domestication of the black porgy, wherein the asparagus ferment contains high F-value oligopeptides and active agar oligosaccharide, the preparation method of the asparagus ferment is: innoculating bacillus subtilis with inoculum size of 10-12% into the solution containing 4-5 wt% of dried asparagus powder with pH measured at 7.0-8.0, adding sucrose isobutyrate acetate and hesperidin into the solution, leavening, drying, and sieving the solution to obtain the asparagus ferment. The overwintering breeding method sufficiently utilizes the aquaculture area, enhances the physical condition of the overwintering black porgy, improves the anti-stress and the immuno-antioxidant capability of the overwintering black porgy, and improves the survival rate to ensure safe overwintering.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a seawater fish black bream cage overwintering culture method. Background technique [0002] Fish are temperature-changing animals, which are more sensitive to changes in the temperature of the water body, and the body can feel weak temperature differences. For most fish, under the condition of long-term low temperature environment, the behavior of fish will change. Most areas of my country are in the temperate zone and sub-temperate zone, and farmed fish generally have the problem of overwintering. Fish are subjected to the dual effects of low temperature and starvation during overwintering, and changes in the metabolic mechanism of fish play an important role in their overwintering adaptation. Long-term low temperature has a significant impact on fish behavior, feeding activities, stress response, etc., and then affects the survival rate of fish. The survival ...

Claims

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Application Information

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IPC IPC(8): A01K61/60A01K61/65A01K61/10A23K10/12A23K10/22A23K10/30A23K10/37A23K20/158A23K50/80
CPCA23K10/12A23K10/22A23K10/30A23K10/37A23K20/158A23K50/80A01K61/10A01K61/60A01K61/65Y02P60/87Y02A40/81Y02A40/818
Inventor 丁月晗张建设卢玮筱
Owner ZHEJIANG OCEAN UNIV
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