Method for high-health propagation and larva incubation of prawns

Abstract

The invention discloses a method for high-health propagation and larva incubation of prawns. The method comprises the steps of intensive cultivation of parent prawns, removal of unilateral eyestalks of female prawns, mating of the parent prawns, collection of fertilized eggs, egg disinfection, elimination and optimization, larva incubation, larva optimization and the like. According to the method for high-health propagation and larva incubation of the prawns, the prawn breeding process and the larva hatching condition are controlled in the whole process, operation disinfection is strictly executed, aquatic product prohibited drugs and antibiotics are not used in the whole process, and dependence on antibiotic drugs is completely gotten rid of. The method for high-health propagation and larva incubation of the prawns has the advantages that the mating rate of the parent prawns is high, the egg laying amount of the female prawns is large, the hatching rate of the fertilized eggs is high, and the malformation rate of the fertilized eggs and larvae is low. After optimization, selected larvae are neat in specification, large in size, high in phototaxis, clean in body surface and healthy in body color, the survival rate of the larvae reaches 75% or above, and the larvae are high in disease resistance and stress resistance and resistant to transportation. The method for high-health propagation and larva incubation of the prawns is suitable for being applied to high-health larva breeding production of the litopenaeus vannamei and has good reproducible operability and high market application and popularization value.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a method for high-health reproduction and hatching of prawns. Background technique [0002] Litopenaeus vannamei is the high-quality shrimp species with the highest aquaculture output in the world so far, and it is also the leading species of aquaculture prawns in my country. Its meat is delicious, and the processed meat rate can be as high as 67%. The range of salt is also wide, and it can grow under the condition of salinity 1-40‰, and it grows fast and has strong disease resistance. It is an excellent wide-saline cultured variety. Since it was introduced in the 1990s, after more than 20 years of development, my country has formed a huge breeding belt from Liaoning to the coast of Guangxi, and in recent years it has been gradually pushed to inland provinces such as Hunan, Hubei, Jiangxi, Yunnan, Sichuan and Xinjiang. Litopenaeus vannamei is a high-end aquatic product in the...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the defects existing in the prior art, provide a method for highly healthy reproduction of prawns and larvae hatching, and solve the problems in the prior art that the reproductive performance of broodstock is unstable, the breeding production efficiency is low, and the quality of hatched larvae is poor. Bottleneck problem