Indoor cultivation method of litopenaeus vannamei parent

Abstract

The invention discloses an indoor cultivation method of litopenaeus vannamei parent, and relates to the breeding of seawater shrimps. The method disclosed by the invention selects the healthy shrimp seed without carrying white spot syndrome virus, and is characterized in that the parent cultivation is performed in a cement nursery pond in a seed cultivation room; the water change amount of the cement nursery pond is adjusted according to the body length of the shrimp seeds; the shrimp seeds are fed with compound feed before the body length reaches 10cm; the shrimp seeds are fed with the mixture of compound feed and fresh shredded squid when the body length reaches 10cm; when the body length reaches 12cm, the shrimp seeds are fed with fresh shredded squid; after the shrimp seeds are longer than 14cm, the spermatophore of the male shrimp occurs, the shrimp seeds are fed with fresh fait with gonad of clamworm and oyster meat; before the shrimp seeds reach the parent specification, the cultivation salinity is kept at 22; when the shrimp seeds reach the parent specification and the spermatophore of a few male shrimps is mature, the salinity is adjusted to 30; and in the next day after a great amount of water in the nursery pond is changed, 10ml/m<3> of composite bacterial liquid consisting of bacillus subtilis, lactic acid bacteria and saccharomycetes is added once per day.

Description

technical field [0001] The invention relates to seawater shrimp breeding technology. Background technique [0002] Litopenaeus vannamei is the main species of prawns cultured in my country. This species originates from the northern part of Peru to the coast of the Gulf of Mexico. The broodstock introduced in my country is artificially selected broodstock. Its advantage is that it does not carry white spot syndrome virus and grows rapidly. The disadvantage is that the introduction If there is no corresponding technology and conditions to carry out selective breeding, the advantage of its improved species will disappear soon, and it will need to be reintroduced at a high cost. At present, there are two kinds of broodstocks used in the production of Litopenaeus vannamei seed in my country: imported broodstocks and pond cultured broodstocks, and pond self-cultivated broodstocks are the main ones. Because the price of imported broodstock is much higher than that of broodstock cul...

AI Technical Summary

Problems solved by technology

[0004] Because the current pond cultivation broodstock adopts the open or semi-open outdoor pond cultivation broodstock method with seawater in natural sea areas as the water source, it is easy to be attacked by viruses and germs in virus host organisms such as seawater sources and copepods in the waters, so that no Loss of elite-breed advantage for specific pathogens

In the cultivation stage of broodstock ponds, artificial compound feeds are mainly fed, which is prone to the problems that the broodstock shrimps cannot reach the specified body length and weight indicators in the predetermined pond culture stage, the qualified rate is low, and the broodstock shrimps are poor in physique and anti-stress ability.