Viscous breeding fish fry hatching mesh and hatching method

Abstract

The invention relates to a viscous breeding fish fry hatching mesh and a hatching method. The hatching mesh comprises a frame and a screen mesh, and two meshes are connected into a whole through hinges and can rotate around a hinge rotation shaft. When fries are hatched, a hatching pond is firstly cleaned up and disinfected, the meshes are unfolded and tiled at the bottom of the hatching pond side by side, the peripheries of the meshes are surrounded by vertical meshes, water is injected into the hatching pond, fertilized fish eggs are thrown into a tank, are stirred and then freely sink, the bottom meshes are turned over and flatly placed after standing of the fertilized fish eggs for 30-40min, fertilized fish eggs are thrown into the tank again, the meshes are taken out, erected, placed into another hatching pond and unfolded to be in V-shaped parallel arrangement, the distance between the two meshes is 10-30cm, and the fries are hatched under suitable conditions. According to the hatching method, the front and the back of each mesh can be sufficiently used for distributing the eggs, egg distribution density is multiplied, the periphery of each mesh is surrounded by the meshes, the meshes are reasonably distributed, hatching area and space utilization rate can be effectively increased, hatching efficiency is improved, the whole operation process is simple, and the hatching mesh is convenient to use, safe and efficient.

Description

technical field [0001] The invention belongs to the technical field of fish breeding, in particular to a sticky egg fry hatching mesh and a hatching method. Background technique [0002] At present, fish culture hatching generally adopts the traditional hatching method, that is, aphrodisiac and spawning are carried out outdoors, and eggs are naturally laid on palm chips, and hatched in a ring. This hatching method is greatly affected by external water sources and climate. Once the climate is abnormal, such as Cold currents, etc., can seriously affect the spawning activity, hatching rate and survival rate of broodstock. The biggest disadvantage of this fry hatching method is that the density of fish eggs naturally spawned on the palm sheet is low, and the yield of fry in a single pond is low. There will be great restrictions on planned commercial seedling breeding, which will become a key link restricting fry production. [0003] After retrieval, there is a single piece of ...

AI Technical Summary

Problems solved by technology

Although this method can improve the hatching ability to a certain extent by adopting a single piece of ordinary mesh, the fish eggs of the mesh are often unevenly distributed, and the fish eggs are easy to run out, the utilization rate of the mesh is low, and the hatching cost is high. Incubation efficiency needs to be further improved

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