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Method for artificially hatching chrtax quadricarinatus eggs

A technology for artificial hatching and red crayfish, which is applied in the field of artificial hatching of red crayfish shrimp eggs, can solve the problems of the influence of hatching survival rate and long cycle, and achieve the effects of improving the hatching survival rate, being easy to manage and shortening the incubation period.

Inactive Publication Date: 2016-02-17
颍上县润海畜禽养殖股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the shortcomings in the prior art that there is a long cycle for brood crayfish brooding and seedling incubation, and the hatching survival rate is greatly affected by the environment, the invention provides a method for artificial incubation of crayfish eggs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Embodiment 1, after the female shrimp mates and lays eggs, collect the fertilized eggs discharged by the female shrimp;

[0011] Pass the hatching liquid into the hatching pool, move the fertilized eggs to the hatching pool, the hatching density is 100 grains / ml, the dissolved oxygen in the hatching pool is kept at 8 mg / L, the hatching temperature is kept at 30°C, and the hatching liquid is composed of water, hydrolyzed protein, α -Linolenic acid, multivitamins, glucose, calcium gluconate, zinc sulfate, and sodium alginate are mixed in a weight ratio of 100:5:0.2:0.5:5:2:0.1:7;

[0012] During the hatching process, the fertilized eggs are irradiated with He-Ne laser, the working wavelength is 632.8nm, and the laser output power is 6mW;

[0013] After the fertilized eggs hatched out of the membrane, move the fertilized eggs to the breeding tank for continuous culture for 1 week. The raising temperature is 24°C, the raising density is 50 / square meter, the dissolved oxygen...

Embodiment 2

[0014] Embodiment 2, after the female shrimp mates and lays eggs, collect the fertilized eggs discharged by the female shrimp;

[0015] Pass the hatching liquid into the hatching pool, move the fertilized eggs to the hatching pool, the hatching density is 150 grains / ml, the dissolved oxygen in the hatching pool is kept at 10 mg / L, the hatching temperature is kept at 30°C, and the hatching liquid is composed of water, hydrolyzed protein, α -Linolenic acid, multivitamins, glucose, calcium gluconate, zinc sulfate, and sodium alginate are mixed in a weight ratio of 100:5:0.2:0.5:5:2:0.1:7;

[0016] During the hatching process, the fertilized eggs are irradiated with He-Ne laser, the working wavelength is 632.8nm, and the laser output power is 6mW;

[0017] After the fertilized eggs hatched out of the membrane, the fertilized eggs were moved to the breeding pool for continuous culture for 1 week. The raising temperature was 26°C, the raising density was 60 / square meter, the dissolv...

Embodiment 3

[0018] Embodiment 3, after the female shrimp mates and lays eggs, collect the fertilized eggs discharged by the female shrimp;

[0019] Pass the hatching liquid into the hatching pool, move the fertilized eggs to the hatching pool, the hatching density is 120 grains / ml, the dissolved oxygen in the hatching pool is kept at 9 mg / L, the hatching temperature is kept at 30°C, and the hatching liquid is composed of water, hydrolyzed protein, α -Linolenic acid, multivitamins, glucose, calcium gluconate, zinc sulfate, and sodium alginate are mixed in a weight ratio of 100:5:0.2:0.5:5:2:0.1:7;

[0020] During the hatching process, the fertilized eggs are irradiated with He-Ne laser, the working wavelength is 632.8nm, and the laser output power is 6mW;

[0021] After the fertilized eggs hatched out of the membrane, the fertilized eggs were moved to the breeding pond for continuous culture for 1 week. The raising temperature was 25°C, the raising density was 55 / square meter, the dissolve...

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Abstract

The invention relates to the technical field of aquaculture, in particular to a method for artificially hatching chrtax quadricarinatus eggs. The method comprises the steps of collecting fertilized eggs laid by female chrtax quadricarinatus after spawning by mating of the female chrtax quadricarinatus; enabling a hatching solution to fill a hatching pond, and moving the fertilized eggs into the hatching pond; irradiating the fertilized eggs by He-Ne laser during a hatching process; moving the fertilized eggs into a cultivating pond for being continuously cultivated for one week after the fertilized eggs are hatched out from membranes, wherein the cultivating temperature is 24 to 26 DEG C, the cultivating density is 50 to 60 fertilized eggs per square meter, dissolved oxygen in the cultivating pond is kept to be 11 to 15 mg / L; irradiating the fertilized eggs for 10 to 12 hours every day by using a fluorescent lamp of which the illumination intensity is 2000 to 2100 lx during a cultivating process; during a cultivating period, mixing and twisting fish meal, fairy shrimp meal, symphyocladia latiuscula, coralline algae, seaweed meal, rotatoria, egg yellow and glutinous rice flour into particles of which the particle diameter is smaller than 1mm by adding water according to a weight ratio of 2 to 5 to 3:5 to 10 to 1 to 1 to 1.5, and applying and spreading the particles into the cultivating pond for twice a day and 10 to 20 g per square meter for once.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to an artificial hatching method for crayfish eggs. Background technique [0002] Red claw crayfish, also known as "Australian freshwater lobster", is native to Australia. It looks like a lobster in the sea. It is one of the most valuable freshwater economic shrimp species in the world. It is beautiful and beautiful, so it is also known as red crayfish. The individual of red crayfish is generally 50-100 grams, and the largest individual is 500-600 grams. It is a freshwater shrimp with strong adaptability. Because of its wide feeding habits, fast growth, tender meat, delicious taste and rich nutrition, it is welcomed in the market in Europe, Japan and China. Broodstock shrimps begin to mate and lay eggs in late April. The female shrimp starts to lay eggs within 12 hours after the male shrimp produces sperm. The eggs produced by the female shrimp are dark yellow after fertilizati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 蒋敏
Owner 颍上县润海畜禽养殖股份有限公司
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