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Artemia cyst shelling method

A technology of artemia eggs and shell liquid, which is applied in animal husbandry and other fields, can solve the problems of affecting the hatching rate, the hatching rate is greatly affected, and the process is unstable, so as to achieve the effect of stable shelling effect and reduce the difficulty of operation

Inactive Publication Date: 2016-07-13
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, chemical methods are mostly used for shelling Artemia eggs, that is, sodium hypochlorite and sodium hydroxide solution are used to dissolve the egg shells. After shelling, the reaction cannot be terminated immediately. It is necessary to remove the shelled eggs and clean them to remove residual chlorine. Continue to act on the shelled eggs, causing greater damage; at the same time, the temperature of the solution is easy to rise during the process of shelling, which affects the hatching rate, and cooling measures need to be taken; the operation process has a great impact on the hatching rate, and the process is unstable; and the residual chlorine on the surface of the eggs Difficult to remove completely, the peculiar smell of chlorine will affect the feed intake of aquatic seedlings when feeding, and it is often necessary to add food attractants

Method used

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  • Artemia cyst shelling method

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Effect test

Embodiment 1

[0018] 1. Soak 500 grams of Artemia eggs in fresh water for 3 hours, inflate and stir to make the eggs fully absorb water and swell. If the fresh water used is tap water, it is necessary to remove chlorine in advance to reduce the damage to the shelled eggs.

[0019] 2. Separate Artemia eggs, place them in 5 liters of shelling solution, and stir at 60 r / min at a temperature of 30°C. The ingredients of the shelling liquid are: trypsin 0.8%, EDTA 0.02%.

[0020] 3. Shelling time is 2 hours, when the color of eggs gradually changes from brown to orange red, add terminator. The ingredients of the terminator are: raw soybean milk prepared from 400 grams of soybeans and 2 kilograms of water, and the soybean trypsin inhibitor in it can effectively inhibit the activity of trypsin and prevent it from destroying the egg membrane.

[0021] 4. Place the inflatable head at the bottom of the solution, open the air flow until the solution is in a tumbling state, inflate and stir for 10 min...

Embodiment 2

[0022] Embodiment 2: the impact of different shelling methods on the hatching of Artemia eggs

[0023] Using the same batch of Artemia eggs produced in Shandong, under natural light irradiation, salinity 30‰, temperature 28°C, incubation time 24h, and other conditions consistent, take the shelling rate corresponding to the two methods at different treatment times and the hatching rate of the corresponding shelled eggs, and compared the effects of two different shelling methods on the hatching of Artemia eggs, the results are shown in Table 1. Among them: the control group is normal hatching without shelling; the chemical method is the combination of sodium hypochlorite and sodium hydroxide; the hatching rate of the two shelling methods is the hatching rate of shelled eggs.

[0024] Table 1 The effect of different treatment methods on the hatching of Artemia eggs

[0025]

[0026] In the chemical method of shelling, the hatching rate of shelled eggs is negatively correlated...

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Abstract

The invention provides an artemia cyst shelling method. The method comprises the following steps that 1, commercial artemia cysts are soaked with fresh water so that the cysts can sufficiently absorb water and swell; 2, the artemia cysts are separated and placed in a shelling solution containing trypsin, and the mixture is slowly stirred; 3, when it is observed that the color of the cysts gradually changes from brown to orange red, a terminating agent is added; 4, standing is carried out after inflation and stirring, and shelled cysts are separated out, simply washed with sea water and then can be used for hatching or direct feeding. The shelling method is a biological shelling method, adopted raw materials are all natural products, no chemical pollution is caused to the shelled cysts, no adverse influence is imposed on direct feeding or subsequent hatching, and the effect is stable.

Description

technical field [0001] The invention belongs to the technical field of artemia eggs application, and in particular relates to a shelling method for artemia eggs. Background technique [0002] Artemia, also known as Artemia, is a small crustacean distributed worldwide and lives in high-saline waters such as salt lakes and salt pans. Artemia eggs are high-quality aquatic nursery bait and play an important role in aquaculture. Artemia eggshells are iron-containing lipoproteins, which cannot be digested by young fish and shrimp. Therefore, it is generally necessary to hatch Artemia larvae first, and then feed the larvae as bait. The hatched egg shells and larvae are not easy to be completely separated, and it is easy to cause part of the hatched larvae to be lost with the egg shells, or the egg shells and larvae are eaten together, resulting in intestinal obstruction and death of fish and shrimp larvae. Artemia eggs can be fed directly after shelling, and larvae can also be ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K67/033
CPCA01K67/033
Inventor 吴闯齐佳慧
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY