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Method for seeding portunus tritubereulatus by means of water retention

A technology of swimming crabs three warts and a reservoir, which is applied in fish farming, application, climate change adaptation, etc., can solve the destruction of non-pathogenic microorganism populations of shrimp and crabs, the threat to the quality and safety of shrimp and crab products, and increase the cultivation time, etc. problems, to achieve the unity of social and ecological benefits, reduce the incidence of diseases, and facilitate the growth of larvae

Inactive Publication Date: 2011-07-20
SHANDONG VOCATIONAL COLLEGE OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional seedling cultivation process of Portunus trituberculatus changes a lot of water, consumes a lot of energy, and increases production costs.
At present, natural sea areas are often polluted, seawater is eutrophic, and a large number of bacteria and fungi multiply, which has a great impact on aquatic seedlings.
[0003] In recent years, various places have begun to use coastal and inner bays for artificial seedling breeding, but the water needs to be changed frequently during the seedling raising process. After changing the water, in order to adapt to the new environment, the larvae need to mobilize the energy of the internal body, and the energy used for growth is reduced. This increases the cultivation time. And if the stable state is destroyed, it will quickly lead to the destruction of non-pathogenic microbial populations in and out of the cultured shrimp and crabs. At this time, the number of pathogenic microorganisms will increase sharply, and the pathogenicity of conditional pathogenic microorganisms will also increase, and crab seedling diseases will occur. Normal Once the water micro-ecosystem loses balance, it is not easy to restore
[0004] In order to prevent and control shrimp and crab diseases, many aquaculture owners blindly use a large amount of pesticides, antibiotics and some high-residue chemical synthetic drugs. security is seriously threatened

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A method for water conservation and seedling cultivation of Portunus trituberculatus, comprising a preliminary water treatment step, an egg laying step and a cultivation step:

[0021] The pre-water treatment step is to add water at 15°C to the reservoir after sedimentation and sand filtration, continue to shading and sedimentation for 3 days, and then add quicklime, formaldehyde and penicillin sodium in the form of aeration to fully mix and sterilize for 3 days;

[0022] The step of laying eggs is to first shut off the air in the above-mentioned reservoir for 3 hours, then draw the surface water of the above-mentioned reservoir into the hatching pond by hanging it with a water pump, then add concentrated photosynthetic bacteria and nitrifying bacteria to the hatching pond, and put The water in the hatching pond is warmed up to 20°C and ventilated, and the species of crabs are sterilized with potassium permanganate and hung on the hatching pond to lay eggs;

[0023] The...

Embodiment 2

[0030] A method for water conservation and seedling cultivation of Portunus trituberculatus, comprising a preliminary water treatment step, an egg laying step and a cultivation step:

[0031] The preliminary water treatment step is to add water at 16°C to the reservoir after sedimentation and sand filtration, continue shading and sedimentation for 4 days, and then add quicklime, formaldehyde and penicillin sodium in the form of aeration to fully mix and sterilize for 3 days;

[0032] The step of laying eggs is to first shut off the air in the above-mentioned reservoir for 3 hours, then draw the surface water of the above-mentioned reservoir into the hatching pond by hanging it with a water pump, then add concentrated photosynthetic bacteria and nitrifying bacteria to the hatching pond, and put The water in the hatching pool is warmed up to 22°C and ventilated, and the species crabs are sterilized with potassium permanganate and hung on the hatching pool to lay eggs;

[0033] T...

Embodiment 3

[0040] A method for water conservation and seedling cultivation of Portunus trituberculatus, comprising a preliminary water treatment step, an egg laying step and a cultivation step:

[0041] The pre-water treatment step is to add water at 17°C to the reservoir after sedimentation and sand filtration, continue to shading and sedimentation for 5 days, and then add quicklime, formaldehyde and penicillin sodium in the form of aeration to fully mix and sterilize for 4 days;

[0042] The step of laying eggs is to stop the above-mentioned reservoir for 4 hours at first, then hang the water pump to draw the surface water of the above-mentioned reservoir into the hatching tank, then add concentrated photosynthetic bacteria and nitrifying bacteria to the hatching tank, and put The water in the hatching pool is warmed up to 25°C and ventilated, and the species of crabs are sterilized with potassium permanganate and hung on the hatching pool to lay eggs;

[0043] The cultivation step is ...

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PUM

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Abstract

The invention discloses a method for seeding the portunus tritubereulatus by means of water retention. The method comprises an earlier stage water treatment step, a spawning step and a cultivating step. The earlier stage water treatment step comprises the steps of: adding water at 15 DEG C to 17 DEG C into an impounding reservoir, adding quicklime, formaldehyde and penicillin sodium in the manner of aeration, adequately mixing, and sterilizing for 3-4 days. The spawning step comprises the steps of: adding concentrated photosynthetic bacteria and nitrifying bacteria into a spawning pool, rising the temperature of the water in the spawning pool to be 20 DEG C to 25 DEG C, aerating, disinfecting the portunus tritubereulatus by potassium permanganate, and suspending the disinfected portunus tritubereulatus above the spawning pool to spawn. The cultivating step comprises the steps of: disinfecting larva bait by the potassium permanganate, adding the disinfected larva bait into the spawning pool, adding the concentrated photosynthetic bacteria and bacillus into the spawning pool every 4-6 days, and cultivating for 20-30 days to obtain the seed of the portunus tritubereulatus. After the method is used, the balance of a water area micro ecological system can be maintained, the antibiotic drugs can not be abused during producing, the disease incident rate can be reduced, the production yield can be improved, and the method is low in cost, free of public hazard, and green.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a method for raising seedlings of Portunus trituberculatus. Background technique [0002] The traditional seedling cultivation process of Portunus trituberculatus changes a lot of water, consumes a lot of energy, and increases production costs. At present, natural sea areas are often polluted, seawater is eutrophic, and a large number of bacteria and fungi multiply, which has a great impact on aquatic seedlings. [0003] In recent years, various places have begun to use coastal and inner bays for artificial seedling breeding, but the water needs to be changed frequently during the seedling raising process. After changing the water, in order to adapt to the new environment, the larvae need to mobilize the energy of the internal body, and the energy used for growth is reduced. This increases the cultivation time. And if the stable state is destroyed, it will quickly lead to th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 董义超
Owner SHANDONG VOCATIONAL COLLEGE OF SCI & TECH
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