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Method for raising first instar crab fingerlings

A technology for crab species and crab fry, applied in the field of cultivating first-year-old crab species, can solve the problems of water quality, climatic environment difficult to adapt, crab species injury, limb disability, etc., and achieve the effect of obvious superiority, stable water quality, and satisfying feeding needs.

Inactive Publication Date: 2012-07-11
顾宏兵
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, large-size crabs are in short supply and the price is high, and inferior crab species flood the market, and they are sold and sold. In addition, long-distance transportation causes crab species to be injured and limbs mutilated.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A method for cultivating one-year-old crab species, comprising primary cultivation and secondary cultivation, wherein the primary cultivation includes the following steps:

[0022] (a) Preliminary preparation: choose a pond with sandy soil bottom, the effective water storage depth is: 1.1m in the shallow water area, and 1.4m in the deep water area. On the surrounding pool ridges, use reinforced plastic boards to build an escape wall, the wall height 27cm, buried in the soil layer 7cm, the inlet and outlet are covered with 35 mesh stainless steel mesh, before putting into use, the pond is thoroughly disinfected with quicklime, at the deep water outlet of the pond, 2m away from the shore, use 18 mesh polyethylene mesh to make a closed The three net cages are arranged in a row and fixed, so that the depth of the net cages is 55cm, and the bottom of the box is 45cm away from the bottom of the pool. Air stones are evenly placed in each net cage, and an air pump is connected. ...

Embodiment 2

[0031] A method for cultivating one-year-old crab species, comprising primary cultivation and secondary cultivation, wherein the primary cultivation includes the following steps:

[0032] (a) Preliminary preparation: choose a pond with sandy soil bottom, the effective water storage depth is: 1.2m in the shallow water area, and 1.45m in the deep water area. On the surrounding pool ridges, use reinforced plastic boards to build an anti-escape wall, the wall height 30cm, buried 10cm in the soil layer, and the inlet and outlet are covered with 40 mesh stainless steel mesh. Before putting into use, the pond is thoroughly disinfected with quicklime. At the deep water outlet of the pond, 2.5m away from the shore, it is made of 20 mesh polyethylene mesh. For the three closed net cages, arrange and fix the three net cages in a row so that the depth of the net cages is 60cm, and the bottom of the box is 50cm away from the bottom of the pool. Air stones are evenly placed in each net cage,...

Embodiment 3

[0041] A method for cultivating one-year-old crab species, comprising primary cultivation and secondary cultivation, wherein the primary cultivation includes the following steps:

[0042](a) Preliminary preparation: choose a pond with sandy soil bottom, the effective water storage depth is: 1.3m in the shallow water area, and 1.5m in the deep water area. On the surrounding pool ridges, use reinforced plastic boards to build an escape wall, the wall height 32cm, buried in the soil layer 12cm, the inlet and outlet are covered with 45 mesh stainless steel mesh, before putting into use, the pond is thoroughly disinfected with quicklime, at the deep water outlet of the pond, 3m away from the shore, a 22 mesh polyethylene mesh is used to make a closed The three net cages are arranged in a row and fixed, so that the depth of the net cages is 55cm, and the bottom of the box is 45cm away from the bottom of the pool. Air stones are evenly placed in each net cage, and an air pump is conne...

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Abstract

The invention discloses a method for raising first instar crab fingerlings, which is characterized by including a primary stage and a secondary stage. The method comprises the following steps: preparing in an early stage, raising crab larvae, transferring crab larvae out of culture boxes, raising crab larvae in open facilities, feeding baits, performing water quality management, and treating crab diseases. The method of the invention is advantageous in that the conditions are simple and feasible, superiority of the method is obvious, the technical scheme is reasonable, yield of crab fingerlings by culturing crab larvae is improved, and the method lays foundation for river carb industry structural regulation.

Description

technical field [0001] The invention relates to a method for cultivating first-age crab species. Background technique [0002] In recent years, with the rapid development of river crab aquaculture, the output of adult crabs has increased significantly. From the current market demand analysis, the effective supply of conventional commercial crabs has become saturated, and some key production areas even have seasonal "difficulty selling crabs". However, large-size crabs are in short supply and the price is high, and inferior crab species are flooding the market, and they are sold and sold. In addition, long-distance transportation causes crab species to be injured and limbs mutilated. At the same time, most of the young crabs cultivated in different places are "old ponds" for many years, and there are many types and quantities of pathogenic bacteria. With the further liberalization of the market and prices, especially after the formation of the buyer's market, the fundamenta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 顾宏兵
Owner 顾宏兵
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