Periodic running water ecological culture method for procambrus clarkii

Abstract

The invention discloses a periodic running water high-density culture method for a procambrus clarkii pond. The method is characterized in that: the pond is sited nearby a clean water source, a ridge is protruded in the pond based on a common fish pond, one end of the ridge is connected with the pond wall, the other end of the ridge is free, a 5 to 8-meter gap is reserved between the ridge and the opposite pond wall, the pond is totally door-shaped, the circuitous total length of pond water is not more than 1,000 meters, two ends of one side of the pond close to the water source are provided with a water inlet and a water outlet respectively, the water inlet is upstream, and the water outlet is downstream. A plastic hose with diameter of 20 centimeters moves up and down in a drainage port to adjust the water level of the pond. Water is fed and discharged periodically in the procambrus clarkii culture period. The method increases a crawfish cave space, promotes water flow, increases dissolved oxygen in water, improves the water quality, stimulates crawfish shelling speed and frequency, and improves the survival rate and the growth speed of the crawfish.

Description

Technical field [0001] The invention belongs to the technical field of aquaculture, and specifically relates to a high-density breeding technology of Procambarus clarkii ponds with regular running water. Background technique [0002] Procambarus clarkii originated in North America and is commonly known as freshwater crayfish. It is classified into the crustacean crustacea decapoda crustacea family. Introduced to my country in 1929, it is now widely distributed throughout the country. Due to the rapid increase in market consumption and export processing of Procambarus clarkii, the number of its wild resources is decreasing sharply, far from meeting market demand. Therefore, increasing the production of Procambarus clarkii through artificial breeding has become one of the important ways to meet market demand. At present, the cultivation technology of Procambarus clarkii is relatively backward. Some shrimp ponds are directly transformed from fish ponds. The pond design is relative...

AI Technical Summary

Problems solved by technology

At present, the breeding technology of Procambarus clarkii is relatively backward. Some shrimp ponds are directly transformed from fish ponds. The design of the ponds is relatively simple, mainly rectangular ponds with a small length-to-width ratio with uniform water surface, and the shallow water area of ​​the ponds is small. , there is less space for burrowing, and Procambarus clarkii concentrates in shallow water in order to obtain oxygen and living space. As a result, the cannibalism rate of shrimp is greatly increased, and the unit output is difficult to increase

Most of the water bodies in shrimp ponds flow slowly, and there is obvious water flow at the inlet and outlet only when the water is being drained, and there is no obvious water flow in the rest of the time. The shrimp molting speed is slow, the water quality is poor, it is difficult to control, and the unit output is relatively low.

[0003] There have been no reports on domestic cultivation methods of changing the layout of crayfish breeding ponds, increasing the space for crayfish to live in caves, and regularly flowing water to stimulate crayfish moulting.

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