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General hatching method for semi-submersible sticky fish eggs

A semi-submersible, fish egg technology, applied in application, fish farming, climate change adaptation, etc., can solve the problems of insufficient dissolved oxygen in fish eggs, difficult operation, uneven distribution of eggs, etc., and improve the utilization of water space. The effect of improving the uniformity of distribution and the simple hatching method

Active Publication Date: 2018-10-02
广西壮族自治区水产引育种中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The formal way is to use hatching boxes or hatching tanks, etc., only relying on methods such as increasing the number of aeration stones and reducing the hatching density can not really solve the problem of fish egg accumulation. On the other hand, the hatching equipment and facilities are large in size and occupy a large area , high water consumption, complex operation, high difficulty, low hatching efficiency, greatly restricting the success rate of sinking fish eggs hatching
The commonly used incubator / cabinet in recent years adopts the method of reducing the hatching density of fish eggs, which alleviates the problem of insufficient dissolved oxygen of fish eggs to a certain extent, but it is bulky, occupies a large area, is difficult to operate, and is expensive. Meet the needs of ordinary nursery farms
[0003] However, the prior art has the following disadvantages: the one is that the eggs adhered to the attachments are unevenly distributed, and they are easy to gather and adhere to cause anoxic death, and after the breeding of water mold, a large area of ​​eggs will die; the other is that fish eggs The space utilization rate of the hatching water body is not high, which will easily lead to the deterioration of the water quality and lack of oxygen in the local water body, and then cause the failure of artificial hatching; the third is that the hatching rate of fish eggs is unstable, which is not conducive to the continuous large-scale production of fry and effectively reduce production costs

Method used

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  • General hatching method for semi-submersible sticky fish eggs
  • General hatching method for semi-submersible sticky fish eggs
  • General hatching method for semi-submersible sticky fish eggs

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The following process steps can be used to hatch fish fry with sticky fish eggs:

[0025] (1) Preparation of fish roe: Put sticky fish roe in a container, add 0.3% sodium chloride solution and male fish sperm, stir for 40 seconds, the amount of male fish sperm added per 50 ml of fish roe is 0.5 milliliters, the amount of adding 0.3% sodium chloride solution is 5 milliliters;

[0026] (2) Fish eggs attached to the hatching mesh: place the hatching device in the water of the pool in a semi-submersible manner. One person splashes the fertilized sticky fish eggs on the water surface, and the other person pulls the handle of the hatching device and shakes it horizontally from side to side continuously for hatching device to disperse and evenly adhere fish eggs to the hatching mesh of the hatching device; sprinkle 50 ml of viscous fish eggs after fertilization on each hatching mesh of 60 x 40 cm;

[0027] (3) Suspension of the hatching mesh: take out the hatching mesh unifor...

Embodiment 2

[0033] The following process steps can be used to hatch fish fry with sticky fish eggs:

[0034] (1) Preparation of fish roe: Put sticky fish roe in a container, add 0.3% sodium chloride solution and male fish sperm, stir for 50 seconds, the amount of male fish sperm added per 80 ml of fish roe is 0.8 milliliters, the amount of adding 0.3% sodium chloride solution is 8 milliliters;

[0035] (2) Fish eggs attached to the hatching mesh: place the hatching device in the water of the pool in a semi-submersible manner. One person splashes the fertilized sticky fish eggs on the water surface, and the other person pulls the handle of the hatching device and shakes it horizontally from side to side continuously for hatching device to disperse and evenly adhere fish eggs to the hatching mesh of the hatching device; sprinkle 80 ml of viscous fish eggs after fertilization on each hatching mesh of 60 x 40 cm;

[0036] (3) Suspension of the hatching mesh: take out the hatching mesh unifor...

Embodiment 3

[0043] The following process steps can be used to hatch fish fry with sticky fish eggs:

[0044] (1) Fish egg preparation: put sticky fish eggs in a container, add 0.3% sodium chloride solution and male fish sperm, stir for 60 seconds, and add 1 ml of male fish sperm per 100 ml of fish eggs; The amount of adding 0.3% sodium chloride solution is 10 milliliters;

[0045] (2) Fish eggs attached to the hatching mesh: place the hatching device in the water of the pool in a semi-submersible manner. One person splashes the fertilized sticky fish eggs on the water surface, and the other person pulls the handle of the hatching device and shakes it horizontally from side to side continuously for hatching device to disperse and evenly adhere fish eggs to the hatching mesh of the hatching device; sprinkle 100 ml of viscous fish eggs after fertilization on each 60×40 cm hatching mesh;

[0046] (3) Suspension of the hatching mesh: take out the hatching mesh uniformly adhered to the sticky ...

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PUM

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Abstract

The invention discloses a semi-submersible viscous roe universal incubation method which comprises the following steps: (1) roe preparation; (2) adhering of the roes to incubation meshes: putting an incubation device in the water of a pool in a semi-submersible manner; spreading the fertilized viscous roes to the water surface by one person, and horizontally shaking the incubation device left and right by another person so that the roes are dispersed and uniformly adhered to the incubation meshes of the incubation device; (3) hanging of the incubation meshes: taking the incubation meshes with uniformly adhered viscous roes out of the incubation device, and vertically hanging the incubation meshes in order on a hanging rope in the water; and (4) incubation management: performing aeration oxygenation of the water in the pool, controlling the water temperature to 18-25 DEG C, and changing the water once every 3-5 hours. The incubation method disclosed by the invention is simple, and the adopted incubation device has a simple and practical structure and is convenient to carry; and moreover, the distribution uniformity of the incubated roes can be effectively increased, the hypoxia death caused by roe overlapping is avoided, the harm to the roes caused by common saprolegniasis in the incubation process can be reduced, and the incubation rate of the roes is further increased.

Description

technical field [0001] The invention relates to the technical field of fish artificial reproduction devices, in particular to a semi-submersible sticky fish egg universal hatching method and device. Background technique [0002] During the hatching process of fertilized fish eggs, sinking fish eggs accumulate at the bottom of the water due to their large specific gravity, and they are squeezed against each other, which is very easy to cause damage. Low, high deformity rate of larvae and other problems. The existing hatching method is to directly sprinkle the fertilized sticky fish eggs on attachments such as palm leaves, nets or the bottom of the pool in the water, allowing them to naturally adhere and hatch directly. The formal way is to use hatching boxes or hatching tanks, etc., only relying on methods such as increasing the number of aeration stones and reducing the hatching density can not really solve the problem of fish egg accumulation. On the other hand, the hatchi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/17
CPCY02A40/81
Inventor 张盛叶香尘吕业坚甘习军
Owner 广西壮族自治区水产引育种中心
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