Breeding method for increasing survival rate of penaeus vannamei

Abstract

The invention discloses a breeding method for increasing the survival rate of penaeus vannamei. The breeding method includes the following steps that firstly, a breeding system is built, wherein the breeding system comprises a breeding pond, an exchange pond, a settling pond and a buffer pond; secondly, water in the breeding pond is pumped to the buffer pond, a mixture of chlorine dioxide and bleaching powder is added into the exchange pond, and antivirus water is obtained; thirdly, sludge on the upper layer of the bottom of the breeding pond is removed, a layer of quick lime is laid and spread on the bottom face of the breeding pond, after exposure is carried out till the pond bottom is sun-cracked, cracks of the quick lime on the bottom face of the breeding pond are swept, the antivirus water is injected, and a microbial regulator is sprayed; fourthly, fertilizer and water treatment is carried out, young shrimps are put, and the putting density of the young shrimps is 60,000-80,000 per mu. Physical removal and chemical killing are effectively combined, the antivirus effect is improved in order to improve the water body environment fundamentally, meanwhile, water body exchange is carried out through the arrangement of the exchange pond, a drainage assembly, a second sprayer and a flow receiving tank, and the survival rate of the penaeus vannamei is increased.

Description

technical field [0001] The invention relates to the field of culture of Penaeus vannamei. More specifically, the invention relates to a culture method for improving the survival rate of Penaeus vannamei. 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, ...

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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, due to the change of bait and environment, the shrimp seedlings will not adapt and cause stress death, which has caused huge economic losses to the majority of farmers. It is an urgent problem to be solved at present to develop a scientific and reasonable breeding method that can improve the stress resistance ability of Penaeus vannamei, reduce the early loss of shrimp seedlings, and improve the survival rate of Penaeus vannamei.

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