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Net cage and method for rapidly separating parents and seeds of macrobrachium nipponense

A separation method and cage technology, applied in fish farming, application, animal husbandry, etc., to achieve the effect of increasing income and fast and low-damage separation

Pending Publication Date: 2019-06-28
FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the prior art, adopting traditional pulling net method or new-style catching net (such as Chinese patent CN201110307649.4 a kind of pond fishing tool and fishing method thereof for freshwater shrimp seedlings), all can't accomplish the rapid growth of freshwater shrimp parent and shrimp seedlings. Therefore, it is urgent to find a simple, efficient, and low-injury method for separating green shrimp parents and shrimp larvae

Method used

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  • Net cage and method for rapidly separating parents and seeds of macrobrachium nipponense

Examples

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Effect test

Embodiment 1

[0024] Freshwater shrimp parent and shrimp fry are separated net cage rapidly, and described net cage comprises seedling collection net cage 1 and is located at the parent collection net 5 in the seedling net cage 1, and parent collection net 5 is quadrilateral, and its 4 sides are connected with collection net respectively. The 4 faces of the seedling net cage 1 intersect and are flexibly connected with the seedling net cage 1.

[0025] Parent collection net 5 is 40 ° with the angle of collecting seedling net box 1 bottom surface.

[0026] One of the edges of the parental collection net 5 coincides with the bottom edge of the seedling-collecting net cage 1, the rear end 4 is flush with the height of the net cage, and the front sinker 3 of the parental collection net 5 is closely attached to the bottom of the seedling-collecting net box 1 .

[0027] Collecting seedlings net box 1 is provided with net cage tongue sinker 2 with front end sinker 3 same side.

[0028] The both s...

Embodiment 2

[0037] The difference with embodiment 1 is that the angle of the parent collecting net 5 and the bottom surface of the net box 1 for collecting seedlings is 45°.

Embodiment 3

[0039] The difference with embodiment 1 is that the angle of the parent collecting net 5 and the bottom surface of the net box 1 for collecting seedlings is 50 °.

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Abstract

The invention discloses a net cage and a method for rapidly separating parents and seeds of macrobrachium nipponense. The net cage comprises a seed collection net cage, and a quadrilateral parent collection net cage arranged in the seed collection net cage. The four sides of the parent collection net cage intersect with four surfaces of the seed collection net cage, and the parent collection net cage is movably connected with the seed collection net cage. The net cage and the method have the advantages that rapid low-damage separation of the parents and the seeds of the macrobrachium nipponense can be realized in a seed fishing process of the macrobrachium nipponense in summer, and the re-capture rate of the parents can reach more than 90%; the separated parents can be used for centralizedbreeding again or can be sold on the market, and accordingly, the breeding benefits of the macrobrachium nipponense are increased.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and relates to a shrimp fishing technology, in particular to a cage and a separation method for quickly separating the parents and seedlings of freshwater shrimp. Background technique [0002] Green shrimp (Macrobrachium nipponense), scientific name Macrobrachium nipponense, is an important freshwater economic shrimp in my country. Green shrimp has the advantages of rich nutrition, tender meat and delicious taste. Due to the increase of people's consumption demand for freshwater shrimp, and the advantages of low cost, fast income and high profit of freshwater shrimp farming, the development of freshwater shrimp farming industry has been promoted. [0003] With the rapid development of aquaculture scale and the improvement of aquaculture intensification, the large-scale breeding of freshwater shrimp seed has become a key link in aquaculture production. And the fishing of freshwater shrimp fr...

Claims

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Application Information

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IPC IPC(8): A01K61/90
Inventor 熊贻伟傅洪拓蒋速飞龚永生乔慧张文宜金舒博
Owner FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI
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