A kind of high-efficiency broodstock hatching device and experimental method of Crayfish

Abstract

The invention discloses a high-efficiency brood hatching device and an experimental method for Procambarus clarkii. A water inlet is provided at a higher position on one side of the box body, and a water outlet is arranged at the bottom of the other side side of the box body. The microporous aeration equipment includes an oxygen inlet. Pipe and microporous oxygen-increasing bubble strips, the outside of the box is equipped with oxygen inlet tubes, the bottom of the box is equipped with micro-porous oxygen-increasing bubble strips, the bottom of the box is equipped with PVC square tubes, and the inner walls of the PVC square tubes are equipped with the first storage rack, the second rack is provided under the first rack on both sides of the PVC square pipe, and plant fibers are arranged on the first rack and the second rack; the present invention can increase the number of egg-bearing shrimp per unit area through the multi-layer egg-bearing hatching device. Capacity, and can use the limited space to expand the activity area of ​​juvenile shrimp. This device is convenient to transport and easy to operate. It can improve the breeding habitat of egg-bearing shrimp and seedlings, and improve the egg hatching rate, hatching capacity per unit area, and seedling quality.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a high-efficiency ovulation hatching device and an experimental method for Procambarus clarkii. Background technique [0002] Procambarus clarkii belongs to the family Cryridae of Decapod Crustacea. Due to the rapid development of the crayfish catering industry in recent years, the market demand for Procambarus clarkii is large. At present, only in Hubei Province, the demand for crayfish seed has reached 100. 100 million tails, but the shortage of seedlings in the existing market leads to high prices of seedlings and high breeding costs for fishermen, which limits the development of the Procambarus clarkii aquaculture industry; [0003] The main reason for the insufficient seed supply in the existing Procambarus clarkii seedling farms is that the holding capacity of brood shrimp per unit water body is low, generally no more than 16 tails / m2, and the hatching rate and emergenc...

AI Technical Summary

Problems solved by technology

[0002] Procambarus clarkii belongs to the family Cryridae of Decapod Crustacea. Due to the rapid development of the crayfish catering industry in recent years, the market demand for Procambarus clarkii is large. At present, only in Hubei Province, the demand for crayfish seed has reached 100. 100 million tails, but the shortage of seedlings in the existing market leads to high prices of seedlings and high breeding costs for fishermen, which limits the development of the Procambarus clarkii aquaculture industry;

[0003] The main reason for the insufficient supply of seedlings in the existing Procambarus clarkii seedling farms is that the holding capacity of ovipositous shrimp per unit water body is low, generally not more than 16 tails / m2, and the hatching rate and emergence rate of ovipositous shrimp are low

Procambarus clarkii all move at the bottom of the water body, but the bottom area of ​​a breeding site is limited, and the upper area of ​​the breeding site is almost idle, wasting resources. In order to initially solve this problem, most farmers will plant water in cement ponds. Plants such as gourds provide a way for Procambarus clarkii to use more space inside the cement pond, but planting a large number of water hyacinths will lead to excessive oxygen consumption in the pond at night, and the bottom of the breeding water body is hypoxic. Oxygen deficiency affects the survival rate and hatching rate of broodstock. If only a small amount of aquatic plants are planted, the effect of making full use of the breeding space cannot be achieved, and Procambarus clarkii is prone to inter-individual differences during the hatching of eggs. The phenomenon of mutual attack, therefore, the present invention proposes a kind of high-efficiency brood hatching device and experimental method of Procambarus clarkii to solve the problems existing in the prior art

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