A method for high-density culture of prawns by using compound carbon source to regulate probiotic microbial flocs

Abstract

The invention relates to a method for intensive culture of prawn by utilizing beneficial microbial flocs regulated by composite carbons. The method is characterized by taking glucose, arginine, beta-hydroxybutyric acid, and poly-beta-hydroxybutyric acid as composite carbon sources, dividing the process of prawn culture into a microbial flocs system building stage, a nitrating function domestication stage and a system maintenance stage, and then applying different types of composite carbon sources in different quantity according to different proportion at different culture stage. The method has the advantages that since the industrial intensive prawn culture utilizing microbial flocs is divided into different stages, multiple carbon sources are utilized comprehensively to regulate functions of microorganisms at different stages, so that regulation and control of water quality in culture is solved intensively, benefiting effect of the bioflocculation technology is brought to full play, excessive requirement for oxygenation in the later period of culture is lowered, and a new effective, high-yield, water-saving, ecological and safe culture mode is achieved.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular, it is a stage-by-stage compound utilization of glucose, arginine, β-hydroxybutyric acid and poly-β-hydroxybutyric acid as carbon sources for probiotic microorganisms and water quality regulation Bioflocculation method for shrimp culture. Background technique [0002] my country is the largest country in shrimp farming in the world, and the output of prawns exceeds 780,000 tons. With the occupation of aquaculture land by other industries, water environment pollution, feed price increases, disease occurrence and other factors becoming more and more serious, intensive shrimp farming in factories with zero water changes is an urgent need for the aquaculture industry. Bioflocculation technology, based on the theory of carbon regulation to regulate microorganisms and water quality, is a method for intensive shrimp farming in factories that can achieve zero water changes. Feed N and...

AI Technical Summary

Problems solved by technology

However, in the middle and late stages of aquaculture, the concentration of suspended particulate matter (TSS) in the aquaculture water is too high due to the rapid proliferation of bacteria, which increases the oxygenation demand of the system and the risk of aquaculture.

Moreover, because the function of nitrifying bacteria is inhibited, ammonia nitrogen cannot be completely converted into non-toxic nitrate nitrogen, which easily leads to the accumulation of highly toxic nitrite nitrogen.

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