Indoor culture method of biological flocs

Abstract

The invention discloses an indoor culture method of biological flocs. The method comprises the following steps: calculating additive amount of an exogenous carbon source, maintaining C / N ratio in water to be (10-15):1, and starting to regulate inflating volume when water color turns to faint yellow from clear color or white so as to keep dissolved oxygen to be less than 1.0mg / L, wherein the exogenous carbon source is a mixture of glucose and cane sugar. The biological flocs culture method disclosed by the invention can realize successful culture of biological flocs indoors without oxygenation or with less oxygenation, overcomes the defect that the biological flocs only can be cultured under sufficient aeration condition at present, and realizes utilization of the biological flocs culture technology in indoor cultivation. By application of the culture method, mass propagation of heterotrophic bacteria in water can be promoted, formation of the biological flocs can be accelerated, content of nitrite and ammonia nitrogen in cultivation water can be lowered and water-change volume of the cultivation water can be reduced. According to the culture method, accumulation of harmful substances in the cultivation water is reduced, feed utilization efficiency is improved, and consequently, cultivation yield and cultivation income are increased.

Description

Technical field [0001] The invention belongs to the field of aquaculture, in particular to a method for cultivating biological flocs under conditions of no or less oxygenation indoors. Background technique [0002] The biological floc technology is to control the C / N ratio of the water body by adding carbon sources, and the heterotrophic microorganisms in the aquaculture pond form biological flocs under controllable conditions. As an additional food source for fish and shrimp, biological flocs can absorb and transform residual bait, excrement of farmed animals, and secondary metabolites of harmful organisms through heterotrophic microorganisms to effectively purify water quality. [0003] Bio-floc technology is essentially different from previous technologies. The object of bio-floc technology is not a species suitable for breeding, but focuses on the characteristics of aquaculture water. It uses the control and management of microorganisms to solve the problems that are prone to ...

AI Technical Summary

Problems solved by technology

However, the ammonia nitrogen and nitrite in the water body under this farming mode are very high, which is very unfavorable to the growth of turtles.