Crayfish (procambarus clarkii) seed culturing net cage

Abstract

The invention relates to the technical field of aquaculture, and discloses a crayfish (procambarus clarkii) seed culturing net cage. The crayfish seed culturing net cage comprises a culture box; sidesupport columns are arranged, close to lower ends, on left and right sides of the culture box; mounting brackets are fixedly mounted, above the culture box, on left and right sides of the side supportcolumns; and a water tank is fixedly mounted at the top ends of the mounting brackets. According to the crayfish seed culturing net cage, a piston plate is in movable butt joint with the interior ofthe water tank, and is fixedly connected with a mounting plate by buffer springs at the bottom; when a large number of crayfishes are put into the culture box, weight of the whole culture box is increased along with increase of number of the crayfishes; and the buffer springs are pulled so as to drive the piston plate at the top ends of the buffer springs to displace in the water tank, thereby applying a relatively great pressure on a pneumatic valve at the bottom end of the water tank so as to inject water into the culture box. Thus, the advantage of being capable of adjusting water injetionamount according to the number of the crayfishes is realized.

Description

technical field [0001] The invention relates to the field of culture technology, in particular to a net cage for Procambarus clarkii nursery. Background technique [0002] Crayfish, also known as Procambarus clarkii, red crayfish and freshwater crayfish. It is shaped like a shrimp and has a hard shell. The adult is about 5.6-11.9 cm long, dark red, the carapace part is nearly black, and there is a wedge-shaped stripe on the back of the abdomen. The juvenile body is uniform gray, sometimes with black ripples. Claw long and narrow. The middle part of the carapace is not separated by mesh-like spaces, and there are obvious grains on the carapace. The frontal sword has side spines or the end of the forehead sword has notches. [0003] With the development of breeding technology, more and more crayfish are artificially cultured. Because the meat of crayfish is delicious, the demand for artificial breeding has also become larger. In the prior art, there is a kind of net cage ...

AI Technical Summary

Problems solved by technology

[0003] With the development of breeding technology, more and more artificially cultured crayfish appear. Because the meat of crayfish is delicious, the demand for artificial breeding has also become larger. In the prior art, there is a kind of net cage used for breeding Crayfish, but because the crayfish cannot be completely in the water, the seedling cages are generally filled with water for lobster cultivation, but because the lobsters reproduce faster, and different numbers of lobsters have different water requirements, In the prior art, frequent manual control of water addition is required, which is inconvenient to use

[0004] At the same time, crayfish belong to ovum breeding. Shrimp eggs and juveniles are attached to the appendages of crayfish. In the case of lack of feed, crayfish can kill each other, especially newly bred juveniles, which become the mouths of large-scale broodstock Meican makes the survival rate of juvenile shrimp low. The existing technology generally cultivates fish and shrimp larvae through natural river ponds or artificially excavated cultivation ponds on the ground. This cultivation method is costly, difficult to cultivate, and difficult to control the growth of fish and shrimp seedlings. The environment, so the amount of cultivation is subject to certain constraints

[0005] Because crayfish have relatively strong vitality and do not like to live in clean water, although there is no need to change the water frequently, dirty water is not conducive to the growth of lobsters, and the filter often becomes clogged during the process of filtering the water phenomenon, and at this time, it is necessary to evacuate the water body to replace the filter screen, which is very inconvenient

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