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Brine shrimp egg shelling method for decreasing hatching rate

A technology of Artemia eggs and hatching rate, applied in animal husbandry and other directions, can solve the problems of reducing the hatching rate of Artemia eggs, and achieve the effect of improving hatching rate

Inactive Publication Date: 2015-01-14
TIANJIN OCEAN PAL CAROL BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing method for shelling Artemia eggs reduces the hatching rate of Artemia eggs after shelling, and no one has proposed how to remove the shells of Artemia eggs to improve the hatching rate of Artemia eggs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A method for shelling Artemia eggs for improving hatchability, comprising the steps of,

[0018] 1) Hydrate Artemia eggs for 1 hour, the salinity of the hydration water is 20‰, during the process of hydration of Artemia eggs, aerate the water for hydration, and the flow rate of the aeration is 95m 3 / (m 2 min);

[0019] 2), after the artemia eggs fully absorb water, transfer them to the shelling solution, and do not aerate the stirring;

[0020] 3), the shelling time of Artemia ovum in the shelling solution is 10min, the color of Artemia ovum changes from brown to off-white, and the last 70% of Artemia ovum is orange-red, then finish shelling; the temperature of the shelling solution Control below 10°C, the air flow rate is 90m 3 / (m 2 min); the shelling solution is prepared from sodium hypochlorite, sodium hydroxide and water, wherein the mass ratio of sodium hypochlorite to water is 1:5, and the amount of sodium hydroxide is calculated as 0.15 grams per gram of dr...

Embodiment 2

[0027] Same as the method step of embodiment one, change the shelling time in step 3) to 15min, the last 75% of Artemia ovum is orange-red, and the Artemia ovum of shelling is carried out under the same conditions as in Example 1 After incubation for 24 hours, the hatching rate was 70%.

Embodiment 3

[0029] A method for shelling Artemia eggs for improving hatchability, comprising the steps of,

[0030] 1) Hydrate the Artemia eggs for 1 hour, and the salinity of the hydration water is 20‰; during the hydration process of the Artemia eggs, aerate the hydration water with a flow rate of 95m 3 / (m 2 min).

[0031] 2), after the artemia eggs fully absorb water, transfer them to the shelling solution, and do not aerate the stirring;

[0032] 3), the shelling time of Artemia ovum in the shelling liquid is 5min, the color of Artemia ovum changes from brown to off-white, and the last 65% Artemia ovum is orange red, then finishes shelling; The temperature of shelling liquid Control below 10°C, the air flow rate is 90m 3 / (m 2 min); the shelling solution is prepared from sodium hypochlorite, sodium hydroxide and water, wherein the mass ratio of sodium hypochlorite to water is 1:2.5, and the amount of sodium hydroxide is calculated as 0.15 grams per gram of dried Artemia eggs;

...

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PUM

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Abstract

The invention provides a brine shrimp egg shelling method for decreasing the hatching rate. The method includes the steps of 1) hydrating brine shrimp eggs for 1-3 hours, wherein the salinity of hydrating water is 0-3%; 2) after the brine shrimp eggs absorb water sufficiently, transferring the brine shrimp eggs to shelling liquid and stirring and aerating continuously; 3) enabling the shelling time of the brine shrimp eggs in the shelling liquid to be 5-15 minutes, wherein shelling is complete when the color of the brine shrimp eggs is changed from brown to grey white and to tangerine finally; 4) after shelling is completed, collecting shelled eggs by a 200-mesh screen net and washing the shelled eggs along the edge of a net bag by a great quantity of fresh water, so that damage to the eggs by direct washing is prevented; 5) after the shelled eggs are washed by the fresh water, the washed shelled eggs are washed by sodium thiosulfate solution, or immersing the washed shelled eggs into the sodium thiosulfate solution for dechlorination for 1-2 minutes prior to washing the dechlorinated shelled eggs by the fresh water, so that the shelled brine shrimp eggs are obtained. The hatching rate of the shelled brine shrimp eggs obtained by the method is increased substantially and is up to 86%.

Description

technical field [0001] The invention relates to the technical field of hatching Artemia eggs, in particular to a method for shelling Artemia eggs for improving hatchability. Background technique [0002] Artemia (Brine shrimp, Artemia), commonly known as Artemia, is a class of small crustaceans that live in high-salinity waters. The nauplii of Artemia that hatch for 1-2 days have a large amount of yolk, rich in protein, Fat is a good opening bait for larvae such as fish, shrimp and crab, which can greatly improve the survival rate of artificial breeding of fish and shrimp without polluting water quality. [0003] With the continuous development of the aquaculture industry, Artemia larvae and adults are becoming more and more popular. After the Artemia eggs hatch, the newly hatched nauplii of Artemia are mixed with the egg shells and unhatched eggs, and the newly hatched nauplii need to be separated from them, which not only requires manpower and material resources, but also...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K67/033
CPCA01K67/033
Inventor 孙朦朦柴慈民王永苓
Owner TIANJIN OCEAN PAL CAROL BIOTECH
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