Net cage for breeding tilapia

A tilapia and net cage technology, which is applied in fish farming, application, climate change adaptation, etc., can solve the problems of restricting the promotion of semi-artificial breeding mode of tilapia, difficulty in exchanging internal and external water bodies, difficulty in removing eggs from the box, etc. Achieve the effect of improving water body exchange rate, ensuring fresh water quality and convenient collection

Inactive Publication Date: 2014-02-12
GUANGXI ACADEMY OF FISHERY SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since most of the net cages used in the semi-artificial breeding mode are 40 mesh, the net cages are easy to be blocked, the exchange of internal and external water bodies is difficult, the water quality in the net cages is poor, and it is difficult to remove eggs from the cages. Regular replacement and cleaning are required, and fish eggs are manually collected and replaced and cleaned. The workload of the cage is relatively large
The problem of tilapia breeding cages largely limits the promotion of the semi-artificial breeding model of tilapia

Method used

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  • Net cage for breeding tilapia

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Embodiment

[0030] Present embodiment is finished in national Guangxi Nanning tilapia fine-bred field, and used cage body is cuboid shape, and is long 18 meters, wide 4 meters, deep 1.8 meters, is made of side net and bottom net, long side net 6 and bottom net 7 uses a 20-mesh polyethylene mesh, and the short side mesh 2 uses a polyethylene mesh with a 2 cm aperture. The stereotyped positioning structure includes wooden pile 4, beam 5, steel wire 1 and sand drop 3, specifically as follows: the role of wooden pile 4 and beam 5 is to fix the position of steel wire 1, and the pile and beam are made of wooden materials, and the distance between piles is 10 meters; steel wire 1 The function is to fix the position along the upper edge of the net cage. The steel wire 1 has a diameter of 5 mm, and the two ends are fixed on the wooden piles of the pond embankment. The middle is supported by wooden piles 4 and beams 5. Be 4.1 meters, steel wire 1 is about 20 centimeters away from the water surface,...

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Abstract

The invention discloses a net cage for breeding tilapia. The net cage comprises a net cage body and a shaping and positioning structure, wherein the net cage body is cuboid and consists of side nets and a bottom net, the long side nets and the bottom net are made of polyethylene net pieces with the fineness smaller than 20-40 meshes, and the short side nets are made of polyethylene net pieces with hole diameters of 1-4cm; and the shaping and positioning structure comprises piles, cross beams, steel wires and sand weights. The net cage has the advantages that the water quality inside the net cage is fresh, tilapia breeding is facilitated, the roe yield is increased, the production controllability is improved, and meanwhile, the cost and the work intensity of production of roes are reduced, so that the good economic benefit can be realized.

Description

technical field [0001] The invention belongs to the field of aquatic animal seed production. Specifically, it is a tilapia breeding net cage. Background technique [0002] At present, the breeding methods of tilapia fry include natural breeding mode and semi-artificial breeding mode. The natural breeding mode is to put the male and female tilapias in a certain ratio (2:1~3:1) into the pond, and the tilapias will mate, fertilize and hatch naturally, and the tilapia fry will be collected by pulling nets artificially. This mode has low technical requirements and simple operation, and can be done as long as there is a pond, but the output is unstable and the controllability is poor, mainly because the hatching of tilapia eggs is carried out in the mouth of the female fish, which takes a long time and is easy to produce. Affected by the external environment, especially in early spring when the temperature is low and the weather changes frequently, the hatching time is longer, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 杨慧赞林勇张金团张永德曾兰陈忠
Owner GUANGXI ACADEMY OF FISHERY SCI
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