Viscous breeding fish fry hatching mesh and hatching method
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A technology of sticky eggs and mesh, which is applied in the field of fish farming, can solve the problems of low utilization rate of mesh, uneven distribution of fish eggs, and easy escape of fish eggs, so as to increase hatching efficiency, reasonable distribution of mesh, and net The effect of high chip utilization
Inactive Publication Date: 2013-11-27
HENAN UNIV OF ANIMAL HUSBANDRY & ECONOMY
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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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Embodiment 1
[0024] Embodiment one: see figure 1 , figure 2 , a hatching mesh for sticky eggs and fry, comprising a square frame and a mesh fixed in the square frame, the mesh consists of two identical meshes, and the two meshes are connected by hinges One body, and can rotate around the hinge shaft. The screen and the frame are fixed by Velcro.
[0025] The square frame is made of metal material, and the wire mesh is made of metal or non-metal wire mesh. The specifications of a single mesh in the mesh are 80-120cm in length and 30-50cm in width, and the mesh polyethylene material is used. The screen and the frame are fixed by Velcro.
Embodiment 2
[0026] Embodiment two: a kind of sticky ovum fry hatching mesh is basically the same as embodiment one, the difference is:
[0027] The frame of the mesh is made of non-metallic materials. The specification of a single mesh in the mesh is 80-120cm in length and 30-50cm in width. The mesh is made of polyethylene material with a mesh of 10-30 mesh. hinged connection.
Embodiment 3
[0028] Embodiment three: a kind of method for hatching sticky ovum fry, comprises broodstock cultivation, induced labor, fertilization and hatching process, hatching process, hatching process comprises the following steps:
[0029] Clean and sterilize the hatching tank, unfold the mesh, spread them side by side on the bottom of the hatching tank, surround the tiled mesh with erected mesh to form a closed box with an open upper end;
[0030] Fill the hatching tank with water until the water surface is 4-8cm higher than the upper edge of the vertical mesh; put the fertilized fish eggs into the box, let the fertilized fish eggs sink freely after stirring, and spread the fertilized fish eggs on the bottom mesh , evenly distributed; then let it stand for 30-40 minutes, turn over the net at the bottom, lay it flat, put in the fertilized fish eggs again, the method is the same as the first time; let it stand for 30-40 minutes, and cover the bottom with fertilized fish eggs Take out t...
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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 ...
Claims
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Application Information
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