Small water body microbial community controlling method for breeding seedlings

Abstract

The invention relates to a small water body microbial community controlling method for breeding seedlings. The method is suitable for a small water body for separately breeding offspring of each pair of parent family in the multi-character family breeding process of seawater economic animals such as prawns and Babylonia japonica; the small water body means a glass reinforced plastic barrel of which volume is 0.5 to 1 m<3>; and the controlling method means to control ammonia nitrogen, nitrite nitrogen, total alkalinity and oxidation reduction potential (ORP) of the water body and microbial nutritional factors such as soluble proteins, amino acid, saccharide, vitamins and orthophosphate. According to the method, aiming at the physical and chemical properties of the small seedling breeding water body, exogenous microbes, a fermentation medium of the seedling breeding water body and related operating programs and technologies are utilized, so that the physical and chemical factors, dominant microbial communities and number of seawater are artificially changed, and the disease-resistant seedling breeding water body which is favorable for the growth of shrimp seeds and improves the survival rate is constructed.

Description

technical field [0001] The invention relates to a small water body microbial community regulation method for seedling cultivation, in particular to a small water body microbial community regulation technology for seedling cultivation in aquatic invertebrate family selection, and belongs to the technical field of seawater economic animal seedling cultivation. Background technique [0002] Vannamei is the main cultured species in the south, and the south needs to produce more than 400 billion to 500 billion shrimp seedlings every year. is one of the key pillars of the shrimp industry. Similarly, the demand for Dongfeng snail seedlings reaches more than 2 billion. [0003] Since the 1930s and 1940s, shrimp seedlings have been successfully cultivated, and the technologies used have been continuously improved, such as cutting (hot) eye stalks, artificially breeding parents, and other technologies have been continuously developed, and most of these technologies come from the tech...

AI Technical Summary

Problems solved by technology

[0011] At present, aquatic breeding such as prawns and Dongfeng snails mostly adopt multi-trait family selection. In production and breeding, most of them require each pair of parents to cultivate offspring separately. The survival rate is low in 1-2 days after the pool, the mortality rate is high in the opening stage, the bait nutrition in the mysis stage is insufficient, resulting in poor quality of seedlings, and the water quality is easy to deteriorate in the later stage, etc.

Compared with the currently widely used industrial seedling cultivation technology, the control of small water bodies is still difficult. Even if it is successful, it will affect the later growth of seedlings. There is no similar technology for this problem.