Method for regulating water quality in shrimp and shellfish polyculture

Abstract

The invention provides a method for adjusting water quality in shrimp and shellfish polyculture, which belongs to the technical field of aquaculture, including establishing a bacteria and algae synergistic system capable of adjusting water quality, and providing microencapsulated culture bait that can slow down water quality deterioration; the above-mentioned bacteria The algae synergy system includes the algae system that grows on the porous carrier and the biofloc system that adds the carbon source skeleton; the microencapsulated culture bait includes the porous core with lipid attached under vacuum, and the porous core that covers the core. In the film of a biodegradable polymer, the film has a thickness of not less than 1 nm and not more than 1 micron. The method provided by the invention combines the synergistic effect of the bait and the bacteria and algae system to achieve zero water exchange effect, can improve the hydrophobicity of the bait so that it does not disintegrate, reduces the carbon source cost of the biofloc system, and increases the volume concentration and total biofloc concentration. The concentration of suspended solids can increase the content and activity of Omega‑3 fatty acids and immune molecules such as phenoloxidase and hemolysin in the body.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a method for adjusting the water quality of aquaculture under the mixed cultivation mode of shrimp and shellfish. Background technique [0002] my country is a big aquaculture country. With the development of intensive aquaculture, the polyculture mode is mainly adopted. In this mode, the growth needs of the main fish and rare fish are first met, and a large amount of high-protein bait is fed to make it grow rapidly. The breeding cycle is shortened, the market is launched as soon as possible, and the purpose of maximum economic benefit is achieved. However, under such feeding and management conditions, it is easy to ignore the growth needs of other mixed animals, resulting in serious deterioration of the water body in the later stage of breeding. At the same time, the demand for bait in this mode is increasing day by day. The utilization rate of bait in the tradit...

AI Technical Summary

Problems solved by technology

But its shortcomings are: first, the cost of this kind of dissolved carbon source is relatively high, and the technical operation is complicated, which increases the cost of cultivation and reduces the economic benefit of cultivation; second, the microorganisms in the water body only rely on their own flocculation, Lack of attachment carrier, the time to generate biofloc is longer (more than two weeks), which increases the time cost; third, the size of the biofloc obtained by cultivation is different, the feeding effect of the cultured economic species is not good, and the bait utilization efficiency is not high

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