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A culture method for improving the quality of euryhalal fish in low-salinity areas

A breeding method and low-salinity technology, applied in the field of aquaculture, can solve problems affecting the sales of live fish in wide-saline seawater, uneven muscle quality, and long-distance transportation stress, so as to improve the survival rate of transportation and improve the environment of aquaculture water , Improve the effect of anti-stress ability

Active Publication Date: 2021-11-16
PEARL RIVER FISHERY RES INST CHINESE ACAD OF FISHERY SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at present, due to the influence of low salinity in the breeding environment (salinity 0~2), the long-distance transport stress of live fish in euryosaline seawater cultured in low-salinity areas is relatively large, and the survival rate is low. Way to sell
Furthermore, fish in high-density ponds in euryhaline seawater have a muddy smell and the quality of their muscles varies, which seriously affects the sales of live fish in euryosaline seawater

Method used

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  • A culture method for improving the quality of euryhalal fish in low-salinity areas
  • A culture method for improving the quality of euryhalal fish in low-salinity areas
  • A culture method for improving the quality of euryhalal fish in low-salinity areas

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Experimental program
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Effect test

Embodiment 1

[0038] a farming system such as Figure 1~4 As shown, the aquaculture system is provided with a salinity adjustment pool 1 and a water circulation system 2, and the water circulation system 2 is composed of a fish pond 3, an ecological ditch 4, a circulation pump 5, a biochemical pool 6, an ozone system and an aeration system. In the present embodiment, the water circulation system 2 is provided with 3 parallel fish ponds 3, and the volume of each fish pond 3 is 40m 3 , which is rectangular or circular in shape. Fish pond 3 is a round bottom pond of cement concrete structure, and the center of the bottom of the pond is provided with a sewage pipe connected with ecological ditch 4. In this embodiment, the width of the ecological ditch 4 is 0.8 m, and the ditch depth is 1.0 m. Aquatic plants such as Gracilaria are planted in the ecological ditch 4 in a floating bed, and a curved screen for collecting solid pollutants is also installed. The water inlet end of ecological ditch 4...

Embodiment 2

[0042] A culture method for improving the quality of euryhalal fish in a low-salinity area, comprising the steps of:

[0043] (1) Build the breeding system of Example 1:

[0044] (2) Water regulation:

[0045] The seawater filtered by the sand tank is pumped into the salinity adjustment pool, and the seawater is first disinfected with 10 ppm strong chlorine essence (containing 30% available chlorine) to eliminate harmful bacteria that may exist in the water body, and aerated for 48 hours , and finally neutralize the residual chlorine in seawater with 1~3 ppm of soda to avoid the impact of residual chlorine on fish, then add sterilized fresh water, adjust the salinity of the water to 7, and then pump the adjusted water Put it into 3 fish ponds, start the water circulation system, and run for 5-7 days;

[0046] (3) Live fish release:

[0047] When the dissolved oxygen content in the water reaches 5-7 mg / L, the pH value is 7.5-8.0, the ammonia nitrogen content is lower than 0....

Embodiment 3

[0049] A culture method for improving the quality of euryhalal fish in a low-salinity area, comprising the steps of:

[0050] (1) Build the breeding system of Example 1:

[0051] (2) Water regulation:

[0052] The seawater filtered by the sand tank is pumped into the salinity adjustment pool, and the seawater is first disinfected with 10 ppm strong chlorine essence (containing 30% available chlorine) to eliminate harmful bacteria that may exist in the water body, and aerated for 48 hours , and finally neutralize the residual chlorine in seawater with 1~3 ppm of soda to avoid the impact of residual chlorine on fish, then add sterilized fresh water, adjust the salinity of the water to 10, and then pump the adjusted water Put it into 3 fish ponds, start the water circulation system, and run for 5-7 days;

[0053] (3) Live fish release:

[0054] When the dissolved oxygen content in the water reaches 5-7 mg / L, the pH value is 7.5-8.0, the ammonia nitrogen content is lower than 0...

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Abstract

The invention discloses a culture method for improving the quality of euryalline fish in a low-salinity area, which comprises the following steps: (1) building a culture system: the culture system includes a salinity adjustment pool and a water circulation system, and the water circulation system Including fish pond, ecological ditch, circulation pump, biochemical pond, ozone system and aeration system; (2) water body regulation: pump filtered seawater into the salinity adjustment pond, after disinfection and aeration, add For sterilized fresh water, adjust the salinity of the water body to 7-10, then pump the adjusted water body into the fish pond, start the water circulation system, and run for 5-7 days; (3) Put live fish: after the water body is stable 1. Put the euryhaline seawater fish into the fish pond for 20-25 days and feed them with seawater fish feed for the first 7-10 days. The invention can effectively improve the quality of euryalline seawater fish cultured in ponds in low-salinity areas, so that it has no muddy smell, delicious meat, strong anti-stress ability and high transportation survival rate.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a culture method for improving the quality of euryalline fish in low-salinity areas. Background technique [0002] With the development of aquaculture, fish, as an important part of human protein food, has become increasingly prominent in its role and status. However, high-density pond cultured fish generally exhibit poorer muscle quality compared with natural fish. Therefore, how to improve the quality of farmed fish has become an important part of aquaculture research and development. [0003] Wide-saline seawater fish, such as seven-star perch (sea bass), barramundi (blind grass), purple snapper (red friend), American red fish (yellow flower), etc., have fast growth speed, strong disease resistance, and good meat quality. Delicious and many other advantages, it is favored by domestic and foreign markets. Since the 1990s, when breakthroughs were made in the key technolog...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/10A01K63/04
CPCY02A40/81
Inventor 余德光许晓东张凯谢骏王广军林旭斌李志斐田晶晶龚望宝郁二蒙
Owner PEARL RIVER FISHERY RES INST CHINESE ACAD OF FISHERY SCI
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