A method for hatching of lentil salmon eggs to prevent the outbreak of saprolegniasis

A technology for saprolegniasis and leptospirosis, which is applied in the field of aquaculture, can solve the problems that saprolegniasis cannot be completely avoided, the economic loss of aquaculture industry, and the long incubation period, so as to prevent large-scale outbreaks of saprolegniasis and promote high promotion Application value, low cost effect

Active Publication Date: 2021-11-30
河北省海洋与水产科学研究院 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Throughout the year, almost all fish and eggs can be infected, and the spread is rapid, causing significant economic losses to the aquaculture industry
Lepidoptera is a typical cold-water fish. The most suitable hatching temperature for its eggs is 6-12°C, which is very suitable for the growth and reproduction of saprolegnia. In addition, the hatching period is long, generally about 20 days, so it is almost impossible to completely avoid it in actual production. The occurrence of saprolegniasis, at the same time, dead eggs are easy to stick to live eggs to form clumps, which will cause hypoxia in live eggs and promote the development of saprolegniasis
Therefore, once saprolegniasis occurs, it will cause immeasurable losses

Method used

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  • A method for hatching of lentil salmon eggs to prevent the outbreak of saprolegniasis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A fine mouse hatching method for preventing rice mildew outbreaks, including the following steps:

[0023] S1: In the incubating container, there is 2 to 3 layers of fertilized eggs, using microfluidic water (flow rate of 8 to 10 l / min, water exchange rate of 50 ~ 60% / h), 6 ° C incubation conditions to hatch Continuous ventilation oxygen during the entire hatching;

[0024] S2: From the second day of the refined, 100ml / m once a day 3 The formalin of the water body is disinfected, and the water is stopped when disinfecting for 1 h, then restores microfluidic water;

[0025] S3: After a decay, 300 ml / m 3 The formalin of the water body is disinfected 3 times a day, and the water is stopped when disinfecting for 1 h, then restores microfluidic water;

[0026] S4: When the incubation is accumulated at 100 ° C · D, artificially remove the egg;

[0027] S5: After removing the dead egg, 300ml / m once a day 3 The formalin of the water body is sterilized. When disinfecting, ...

Embodiment 2

[0029] A fine mouse hatching method for preventing rice mildew outbreaks, including the following steps:

[0030] S1: In the incubation container, 2 to 3 layers of fertilized eggs, using microfluidic water (flow rate of 8 ~ 10 l / min, water exchange rate of 50 ~ 60% / h), 10 ° C incubation conditions to hatch the fine lance Continuous ventilation oxygen during the entire hatching;

[0031] S2: From the second day of the refined, 150ml / m once a day 3 The formalin of the water body is disinfected, and the water is stopped when disinfecting for 1 h, then restores microfluidic water;

[0032] S3: After ate, 350ml / m 3 The formalin of the water body is disinfected 3 times a day, and the water is stopped when disinfecting for 1 h, then restores microfluidic water;

[0033] S4: When the incubation is accumulated at 100 ° C · D, artificially remove the egg;

[0034] S5: After removing the dead egg, 350ml / m once a day 3 The formalin of the water body is sterilized. When disinfecting,...

Embodiment 3

[0036] A fine mouse hatching method for preventing rice mildew outbreaks, including the following steps:

[0037] S1: In the incubating container, there is 2 to 3 layers of fertilized eggs, which use microfluidic water (flow rate of 8 to 10 l / min, water exchange rate of 50 ~ 60% / h), 12 ° C incubation conditions to hatch the fine mouse Continuous ventilation oxygen during the entire hatching;

[0038] S2: From the second day of acceptance, 200ml / m once a day 3 The formalin of the water body is disinfected, and the water is stopped when disinfecting for 1 h, then restores microfluidic water;

[0039] S3: After a decimal disease, 400 ml / m 3 The formalin of the water body is disinfected twice a day. When disinfecting the water is 1 h, it will restore micro-water;

[0040] S4: When the incubation is accumulated at 100 ° C · D, artificially remove the egg;

[0041] S5: After removing the dead egg, use 400ml / m once a day 3 The formalin of the water body is sterilized. When disi...

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Abstract

The invention provides a method for hatching the eggs of leptospirosis to prevent the outbreak of saprolegniasis. In the early stage of hatching the eggs of leptospirosis, formalin at a low concentration is used to inhibit the germination of saprolegniasis spores and delay the occurrence of saprolegniasis; After the disease occurs, the mycelium of Saprolegniasis is quickly killed with high concentration of formalin, so as to control the spread of Saprolegniasis; before the autolysis of dead eggs, the stage of leptospirosis embryo development that is not sensitive to external stimuli, Timely manual removal of dead eggs prevents dead eggs from sticking to live eggs and causing a large outbreak of saprolegniasis; after manual removal of dead eggs, high-concentration formalin is used to prevent saprolegniasis from recurring. Through the above method, it is possible to effectively prevent the large-scale outbreak of saprolegniasis during the hatching stage of leptospirosis salmon eggs, and the average hatching rate can be increased to more than 92.6%. At the same time, the method is simple and easy to implement, and the cost is low, and it is suitable for large-scale breeding production , has high promotion and application value.

Description

Technical field [0001] The present invention belongs to the field of aquaculture technology, and in particular, the present invention relates to a method of preventing the incubation of fine mouse in an explosive of rice mildew. Background technique [0002] Brachymystax Lenok is a bollard animal door, a spinal animal, a hard bone fish, a radial fin sub-shape, a squid, a masonry, and a fine squid. The fine squid is one of the fish in my country's high-definition area. It is only one of the world. Its meat flavor is fat and fat, high containment is high (3.8% ~ 7.7%), rich in nutrients, and the eggs are quite expensive. A precious economic fish. In recent years, due to the damage of the natural ecological environment and the interference of human factors, the number of resources of the fine squid will be reduced year by year, and it is now listed as national secondary protected animals. Therefore, vigorously carry out the protection of fine fish resources, proliferation, and culti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/10A01K61/13A01K61/17A01K63/04
CPCA01K63/042A01K61/10A01K61/13A01K61/17Y02A40/81
Inventor 高晓田赵春龙肖国华陈力张立坤妥志利葛京王旭旭徐建华
Owner 河北省海洋与水产科学研究院
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