Culture method of Penaeus vannamei in flowing water

Abstract

The invention discloses a litopenaeus vannamei aquaculture method by flowing water. The method includes the steps: firstly, building an aquaculture system comprising a rectangular growing tank and a rectangular exchange tank; secondly, removing sludge at the bottom of the growing tank, spraying quicklime onto the bottom surface of the growing tank, injecting disinfection water until the water submerges at least 0.6cm of the highest position of the bottom surface of the growing tank, spraying microorganism adjustment agents, injecting disinfection water until the depth of the water is 1.8-2.1m, adding mixture of chlorine dioxide and bleaching powder into the growing tank, stirring the mixture until the mixture is completely dissolved, and performing fertilizer water treatment; thirdly, throwing young shrimps into the growing tank. The throw-in density of the young shrimps is 60-80 thousand young shrimps per mu. The aquaculture method has the advantages that by the aid of the exchange tank, a drainage component, a second sprayer and a flow collecting tank, bottom water can be photosynthesized, sufficiently-photosynthesized top water rich in saturated oxygen is led into the bottom of the growing tank, so that the water is used by litopenaeus vannamei, and water colors in the growing tank are kept.

Description

technical field [0001] The invention relates to the field of culture of Penaeus vannamei. More specifically, the present invention relates to a method for cultivating Penaeus vannamei in flowing water. Background technique [0002] Penaeus vannamei, whose scientific name is Penaeus vannamei, belongs to the phylum Arthropoda, with an average lifespan of at least 32 months, and an adult body up to 24cm long. The legs are often chalky, and the meat is delicious, with high economic value. The processed meat rate can be as high as 67%. It has a wide temperature range and can grow at 18-32°C. It also has a wide salt range and can grow at a salinity of 1-40‰. It is an excellent desalinated breeding variety. Penaeus vannamei grows fast and has strong disease resistance. It has gradually become the main cultured shrimp species in southern my country. Shrimp fry, shrimp nauplii or broodstock are available in Xiamen, Beihai, Nanning and Guangzhou in my country. [0003] However, wh...

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Problems solved by technology

[0003] However, when the shrimp seedlings are moved from the indoor nursery pond to the grow-out pond, and raised in the grow-out pond, the shrimp seedlings need a lot of oxygen during the growth process, but the photosynthesis in the grow-out pond is mainly algae in the surface water. The algae in the bottom water cannot be irradiated by sunlight, and they can rarely perform photosynthesis. In the existing technology, the surface water and the bottom water are exchanged by agitation, and the bottom water is exchanged for photosynthesis. However, stirring the water body is easy. Cause large fluctuations in water flow, causing the stress response of Penaeus vannamei to death, and the agitation of the water body will easily lead to a decrease in the transparency of the water body, which will further reduce the photosynthesis of the surface algae. How to turn the water body in the growing pond into living water without changing Or slightly change the fluctuation of the water body, increase the photosynthesis of algae in the water body to increase the oxygen content of the water body, and keep the water color in the growing pond cool is an urgent problem to be solved at present

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