Method for freshwater culture of penaeus vannamei by using bio-flocculation technology

A biological flocculation and freshwater aquaculture technology, applied in the field of freshwater aquaculture of Penaeus vannamei, can solve the problems of shrimp growth and physiological health, influence shrimp survival, growth and immune defense, etc., to improve feed utilization rate and immunity. , the effect of improving the quality and yield of aquaculture

Inactive Publication Date: 2018-01-16
SHOUXIAN LYUYUAN SPECIAL AQUATIC ECOLOGICAL AQUACULTURE PROCESSING CO LTD
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Problems solved by technology

Studies have shown that changes in salinity can affect the physiological functions of shrimp such as survival, growth, and immune defense. At the same time, it can also cause changes in the composition of microbial groups and active substances in bioflocs, thereby affecting the growth and physiological health of shrimp.

Method used

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Embodiment Construction

[0021] A method for freshwater culture of Penaeus vannamei by using biofloc technology, comprising the following specific steps:

[0022] (1) Pond preparation:

[0023] Disinfect the breeding pond, expose it to the sun, and clear the pond, then inject new water after filtering through the screen, keep the water intake at 2 / 3 of the total water volume of the pond, adjust the pH value of the breeding water system to 7.5-8.5, and set the temperature at the bottom of the pond. device;

[0024] (2) Sprinkle lactic acid bacteria and Bacillus subtilis into the culture pond, add carbon source sucrose and nitrogen source ammonium chloride at one time, maintain the carbon content in the water body at 30 mg / L, and maintain the nitrogen content in the water body at 2 mg / L;

[0025] (3) Biofloc cultivation:

[0026] Fully aerate the water body in the culture pond, and at the same time use an aerator to increase oxygen in the water body, control the dissolved oxygen in the water body to m...

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Abstract

The invention discloses a method for freshwater culture of penaeus vannamei by using a bio-flocculation technology. According to the method, lactic acid bacteria and bacillus subtilis organisms are utilized, through aeration, bio-flocculation is quickly cultured and generated, the purification effect on water quality can be achieved through the assimilation of heterotrophic bacteria in the cultureprocess of penaeus vannamei, and meanwhile crude proteins, crude fat and other nutrients required by penaeus vannamei are increased; the utilization rate of feed can be increased, and the feeding amount is reduced; in addition, by gradually reducing the salinity of a water body, the culture environment can be adjusted slowly to avoid negative effects caused by salinity change fluctuation on culture organisms in the environment, the culture quality and yield are improved, and the adaptability of penaeus vannamei to the environment is improved.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a freshwater culture method for Penaeus vannamei by using biofloc technology. Background technique [0002] China is the world's largest producer of prawns. In recent years, the incidence of prawn diseases has been increasing, and the prawn farming industry is facing a bottleneck. Therefore, it is imminent to find a new healthy ecological breeding technology. In recent years, scholars at home and abroad have developed a symbiotic balance body with a variety of microorganisms, using biological regulation methods, to solve water quality problems, improve the success rate of shrimp farming, increase the efficiency of aquaculture, and improve the safety of aquatic products. As a result, a new new technology for aquaculture - biofloc technology (biofloctechnology, BFT) was born. [0003] Biofloc technology is to form flocs under controllable conditions through hetero...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/59C02F3/34C02F103/20C02F101/16
CPCY02A40/81
Inventor 刘克占
Owner SHOUXIAN LYUYUAN SPECIAL AQUATIC ECOLOGICAL AQUACULTURE PROCESSING CO LTD
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