Method for breeding river crab by using hanging basket in pond and crab breeding basket

Abstract

The invention discloses a method for breeding a river crab by using a hanging basket in a pond and a crab breeding basket, and belongs to the technical field of river crab breeding. The method comprises the following steps of: placing the crab in the crab breeding basket; and hanging the crab breeding basket in water to breed to obtain mature crab, wherein one crab species is placed in each basket, one crab basket is hung in every square meter of water surface, and the crab baskets are arranged according to row spacing of 2m and plant spacing of 0.5m; female crabs and male crabs are arranged in an interlacing way; the crab breeding basket is a grass green and cuboid PVC (Polyvinyl Chloride) (specific gravity of 1.39) plastic grid basket of which the bottom is solid and the rest part is hollow, and consists of a basket body, an upper cover and a lifting handle; the upper cover is movable; mushroom fasteners are distributed around a frame and are inserted into mushroom plug holes on the frame of the basket body to be fixed; a feed is thrown from the hollow part of the upper cover; the upper cover is opened when the crabs are caught and put; and the dead weight of a finished product is about 300g. By adopting the method, the maiming and killing phenomena of the river crab caused by unaccomplished unshelling due to frightening of the same species and enemies during unshelling and injury of unshelled soft shell crab caused by the same species and the enemies can be solved; the bottle neck of mature crab recapture rate of 60-70 percent is removed, and the mature crab recapture rate reaches 100 percent; fence facility around the pond is removed; and mature crab menu type selling is realized.

Description

1. Technical field [0001] The invention belongs to the technical field of river crab cultivation. 2. Background technology [0002] According to the breeding process, river crabs (mitten crabs) will go through three stages in their life. Parent crabs breed to produce crab seedlings, crab seedlings develop into crab seedlings, and crab seedlings develop into adult crabs (edible crabs). At present, the pond adult crab breeding method in my country is to surround the pond with plastic plates, plastic films, aluminum plates, etc., and then directly put the crab species in the pond to grow into crabs. [0003] There are 4 deficiencies in this method. The one is that crabs are vulnerable to congeners and enemies when they moult, and the shelling attempts are frightened. Catching females and males, catching big and small, catching more and catching less cannot be controlled artificially; third, the return rate is difficult to break through the bottleneck of 60%-70%; fourth, the ba...

AI Technical Summary

Problems solved by technology

[0003] There are 4 deficiencies in this method. The one is that crabs are vulnerable to congeners and enemies when they moult, and the shelling attempts are frightened. Catching females and males, catching big and small, catching more and catching less cannot be controlled artificially; third, the return rate is difficult to break through the bottleneck of 60%-70%; fourth, the barriers around the pond bring inconvenience to daily management

Therefore, the benefits of raising crabs are still greatly restricted

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