Separated device of raising sea cucumber in cage

Abstract

The Stichopus japonicus cultivating separate mesh cage apparatus has the structure comprising a frame, mesh sheets and mesh bags. The frame is made of PVC pipes connected with elbows and T-pieces; the mesh sheets are hung inside the frame; and the mesh bags made of polyethylene net are cylinders around the frame and have ends tied with nylon ropes. The separate mesh cage apparatus provides closed Stichopus japonicus growing space without effects of harmful environment factors and enemy organism invasion, and has high Stichopus japonicus survival rate and yield.

Description

Technical field: [0001] The invention belongs to the aquaculture technology, and relates to a separated sea cucumber cultivation device in net cages. Background technique: [0002] At present, the scale of japonicus farming in northern my country is expanding day by day, and the farming method has also changed from bottom seeding and multiplication in the sea area to building ponds on intertidal rocks and reefs, and then pond farming in the transformation of shrimp ponds. The advantage of bottom-seeding multiplication in sea areas is that the breeding environment is a natural environment, the bait required by sea cucumbers is abundant, and the growth rate is fast. The disadvantage is that the ability to resist natural disasters is weak, and the survival rate and harvest rate of sea cucumbers are low, and the harvest rate is generally below 5%. The advantages of building ponds on rocky reefs in the intertidal zone are large water changes, the breeding environment is close to ...

AI Technical Summary

Problems solved by technology

The advantage of bottom-seeding multiplication in sea areas is that the breeding environment is a natural environment, the bait required by sea cucumbers is abundant, and the growth rate is fast. The disadvantage is that the ability to resist natural disasters is weak, and the survival rate and harvest rate of sea cucumbers are low, and the harvest rate is generally below 5%. The advantages of building ponds on rocky reefs in the intertidal zone are large water changes, the breeding environment is close to the natural environment, and the survival rate can reach more than 50%. The disadvantage is that it occupies a large amount of intertidal sea area and seriously damages the natural landscape. Therefore, it cannot meet the needs of sea cucumber culture; the advantage of pond culture is that the amount of water exchange and pond water depth can be controlled artificially during the culture process, and bait can be artificially fed to supplement sea cucumber bait, which can be cultured at high density. The disadvantage is that it can be cultured in ponds There are many environmental factors unfavorable to the survival of sea cucumbers in the environment: such as predatory organisms, thin and soft pool bottoms, caves of cave-dwelling creatures, etc., which endanger the survival of sea cucumbers all the time; reef), its types are also varied, and the methods are different. The survival rate of sea cucumbers varies from high to low, generally low, and the highest survival rate is only about 30%.

The above breeding methods have seriously restricted the development of this industry

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