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Method for performing large-scale breeding on freshwater crayfish seedlings

A technology of freshwater crayfish and seedlings, which is applied in the field of crayfish farming, can solve problems such as shortage of shrimp seedlings, low survival rate, and small amount of eggs held by female shrimps, and achieve the goals of reducing morbidity, high survival rate of seedlings, and improving breeding efficiency Effect

Inactive Publication Date: 2014-07-23
湖北大自然农业实业有限公司
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Problems solved by technology

This leads to a serious shortage of shrimp seedlings in the breeding process. The main reason is that the number of eggs held by female shrimp is small, and the survival rate of juvenile shrimp after leaving the mother is extremely low.

Method used

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Embodiment Construction

[0006] Below in conjunction with example the present invention will be further described.

[0007] Renovation of the pond: Change the pond to a pond body with a width of 20m and a length of less than 300m. It is required that the soil and mud have good viscosity, no pollution, and convenient drainage and irrigation. The earthen pond is built in a place sheltered from the wind and facing the sun. And the organic calcium needed by the juvenile shrimp itself. After the pond bottom silt is cleaned, lay 30cm-50cm of fine sand, which is conducive to the foraging of broodstock and juvenile shrimp. From the bottom of the pond to the upstream water inlet, slide upward at a slope of 15 degrees. The deepest water level must be 1.8m deep, and the shallowest water level should be maintained. 30cm deep, properly plant high stem-top water plants in shallow water to prevent birds from harming, and at the same time, do not plant too densely to affect sunlight exposure. Due to the large differe...

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Abstract

The invention relates to the field of crayfish cultivation, in particular to a method for performing large-scale breeding on freshwater crayfish seedlings. The method is characterized by comprising the step of pond reconstruction, wherein a pond is changed to be a pond body with the width of 20 m and length within 300 m, after sludge in the pond bottom is cleaned, fine sand with the thickness of 30 cm to 50 cm is laid, the position from the pond bottom water draining position to the upstream water inlet position slides upwards according to the 15-degree slope, the deepest water level reaches 1.8 m, the shallowest water level keeps 30 cm, high-stem-tip subaquatic plants are suitable for being planted in the shallow water area, water is injected into the area with the deep water position about 1.8 m and the shallow water area position about 30 cm before seedling feeding by 7 to 10 days, 50 kg broken tea cakes are used in each mu for being soaked in the water for 12 hours, and then the freshwater crayfish seedlings are evenly poured into the whole pond. According to the technical scheme, the method reduces the attack rate and the death rate, the seedling survival rate is high, long-distance transport is facilitated, and the cultivation efficiency is improved.

Description

technical field [0001] The invention relates to the field of culturing crayfish, and relates to a method for large-scale breeding of freshwater crayfish seedlings. Background technique [0002] Freshwater crayfish have few diseases, wide adaptability to growth conditions, wide feeding habits, fast growth speed and low breeding cost. At present, it has become a home-cooked delicacy in China, and it is also favored by foreign EU countries. The price has been rising rapidly in recent years, and the supply is in short supply. This causes a serious shortage of shrimp seedlings in the breeding process. The main reason is that the amount of eggs held by female shrimp is small, and the survival rate of juvenile shrimp is extremely low after being separated from the mother body. Contents of the invention [0003] The purpose of the present invention is to provide a method for large-scale breeding of freshwater crayfish seedlings. [0004] The present invention is achieved in this...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 王云帝杜向东陈运兵
Owner 湖北大自然农业实业有限公司
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