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Sturgeon incubation method in muddy water body

A water and mud technology, applied in fish farming, application, climate change adaptation, etc., can solve the problems of artificial incubation management and feeding difficulties, failure of seedlings to survive, and limited development of unopened larvae.

Inactive Publication Date: 2010-04-28
XINJIANG YIHE STURGEON IND TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the development of fertilized eggs and unopened larvae of sturgeons in the existing muddy water body is limited, the seedlings cannot survive, the management and feeding of artificial incubation are difficult, and bait is wasted. A kind of hatching method of sturgeon in muddy water body

Method used

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  • Sturgeon incubation method in muddy water body
  • Sturgeon incubation method in muddy water body
  • Sturgeon incubation method in muddy water body

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specific Embodiment approach 1

[0009] Specific embodiment one: the hatching method of sturgeon in the muddy water body of this embodiment realizes by the following steps: one, collect the semen and mature ovum of sturgeon broodstock, then artificially fertilize with semi-dry method, after 4~5min, use mass concentration of Use 20% to 25% talc powder suspension to debond the fertilized eggs, wash the fertilized eggs with water for 3 to 6 times after 40 to 50 minutes; Hatch in the muddy water breeding device of sturgeon fish in the wild muddy water until the membrane ruptures; 3. 4 to 7 days after the membrane rupture, add water worms to induce the larvae to open their mouths to feed. 1100 tails / m 3 Cultivate at a density of 400-600 fish / m after the larvae grow to 3cm or more 3 The density continues to be cultivated until the fish species with a body length of 5 to 10 cm, that is, the hatching of sturgeon in muddy water is completed.

[0010] In this embodiment, the muddy water body in the field is a water b...

specific Embodiment approach 2

[0016] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the talcum powder suspension with a mass concentration of 21% to 24% is used in step one to debond the fertilized eggs, and rinse the fertilized eggs with water after 42 to 48 minutes for 4 to 4 minutes. 5 times. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0017] Specific embodiment three: the difference between this embodiment and specific embodiment one is that in step one, the talcum powder suspension with a mass concentration of 23% is used to debond the fertilized eggs, and the fertilized eggs are washed with water for 4 times after 45 minutes. Other steps and parameters are the same as those in Embodiment 1.

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Abstract

The invention relates to a sturgeon incubation method in a muddy water body. The method can solve the problems of restricted development of fertilized eggs and larvae without initial feeding, inability to survive of seeds, difficult management and feeding in artificial incubation and waste of baits in the existing incubation of sturgeon in the muddy water body. The method comprises the following steps: 1, collecting semen and mature eggs of sturgeon broodstock, further using the semi-dry method for artificial insemination, using talc powder suspension for debonding the fertilized eggs, and then flushing; 2, incubating the fertilized eggs after the flushing in the muddy water body till the rupture of membranes; and 3, inducing the larvae to carry out the initial feeding after the rupture of membranes, and then carrying out the culture by different densities till that the body length of the larvae achieves 5-10cm, thereby completing the incubation of the sturgeon in the muddy water body. The survival rate of the seeds in the method can achieve 30%-35%, and the environmental conditions for the development of the seeds and the inhabitation of the larvae and adult fish do not change, thereby avoiding the problems of the difficult management, the difficult feeding and the waste of the baits.

Description

technical field [0001] The invention relates to a method for hatching sturgeon. Background technique [0002] Sturgeon eggs are a kind of sinking eggs with large egg grains. Under natural conditions, they are mostly laid by mature female broodstock in rivers, lakes and other spawning grounds. Located upstream of the river. Artificial breeding of the fertilized eggs and larvae of the family Acipenseridae is partly or completely developed in tank incubators (screen, shower or tipping bucket) or bottle incubators and cement pools, metal and glass reinforced plastic (Glass Reinforced Plastic) under controlled flowing water conditions. Finished in the tank of other materials. [0003] At present, it has been found through practice that hatching sturgeon in muddy water, the development of its fertilized eggs and unopened larvae is limited, and the seedlings cannot survive; It is easy to fluctuate, the seedlings are randomly distributed, the activities and the living area are la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 王念民孙大江曲秋芝张颖马国军
Owner XINJIANG YIHE STURGEON IND TECH CO LTD
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