Culture method for improving quality of wide-salinity fishes in low-salinity area

A culture method and low-salinity technology, applied in the field of aquaculture, can solve the problems affecting the sales of hypersaline seawater live fish, uneven muscle quality, etc., and achieve the effects of improving the survival rate of transportation, improving the environment of aquaculture water, and tender meat.

Active Publication Date: 2019-06-28
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

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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  • Culture method for improving quality of wide-salinity fishes in low-salinity area
  • Culture method for improving quality of wide-salinity fishes in low-salinity area
  • Culture method for improving quality of wide-salinity fishes in low-salinity area

Examples

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 0.8m, and the ditch depth is 1.0m. Aquatic plants such as Gracilaria are planted in the ecological ditch 4 in a floating bed mode, and a curved screen for collecting solid pollutants is also installed. The water inlet end of ecological ditc...

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 culture system of embodiment 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 10ppm 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 Use 1-3ppm of soda to neutralize the residual chlorine in seawater to avoid the impact of residual chlorine on fish, then add sterilized fresh water to adjust the salinity of the water to 7, and then pump the adjusted water into 3 In the fish pond, 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 5-7mg / L, the pH value is 7.5-8.0, the ammoniacal nitrogen content is lower than...

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 culture system of embodiment 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 10ppm 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 residual chlorine in seawater with 1-3ppm 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 into 3 In the fish pond, 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 5-7mg / L, the pH value is 7.5-8.0, the ammoniacal nitrogen content is lower than 0.05mg...

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Abstract

The invention discloses a culture method for improving the quality of wide-salinity fishes in a low-salinity area. The culture method comprises the following steps: (1) constructing a culture system,wherein the culture system comprises a salinity regulating tank and a water circulation system, and the water circulation system comprises a fish culture tank, an ecological ditch, a circulating pump,a biochemical tank, an ozone system and an oxygenation system; (2) water body regulation: pumping filtered seawater into the salinity regulating tank, sterilizing and aerating, then adding the sterilized fresh water, adjusting the salinity of the water body to be 7-10, pumping the regulated water body into a fish pond, starting the water circulation system, and operating for 5-7 days; and (3) live fish throwing: after the water body is stable, placing the wide-salinity sea water fishes into the fish pond for culturing for 20-25 days, and feeding sea water fish feed in the first 7-10 days, wherein the feeding amount is 0.1%-0.2% of the weight of the fishes, and the fishes are not fed with the feed in the later period. By the culture method, the quality of the wide-salinity sea water fishescultured in the pond in the low-salinity area can be improved effectively, so that the wide-salinity sea water fishes have no fishy smell, delicious meat quality, strong stress resistance 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), red snapper (red friend), American red fish (yellow flower), etc., have fast growth, strong disease resistance, It has many advantages such as delicious meat quality, and is favored by domestic and foreign markets. Since the 1990s, when breakthroughs were made in the key technology of fish pon...

Claims

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Application Information

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Patent Type & Authority Applications(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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