Indoor culture method of biological flocs

A cultivation method and biofloc technology, applied in animal feed, animal feed, bacteria, etc., can solve the problems of unfavorable growth of turtles, high ammonia nitrogen and nitrite, so as to promote mass reproduction and reduce ammonia nitrogen and nitrite Content, accelerated formation effect

Active Publication Date: 2014-03-12
广州先得生物技术有限公司
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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.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The cultivation method of embodiment 1 indoor biofloc

[0021] (1) Introduce external water sources into indoor aquaculture ponds: water sources are generally obtained from reservoirs or other water sources. After being introduced into indoor aquaculture ponds, the initial stage is not inflated, so that the dissolved oxygen in outdoor water entering indoor aquaculture ponds is gradually reduced to 1.0mg / L the following.

[0022] (2) Move the breeding objects into the breeding pond: generally just hatched juvenile turtles or juvenile soft-shelled turtles, the feed amount is 3-5% of the fish weight, at 8:00-8:30 and 15:00 every day -15:30 Feed twice. Monitor water quality changes every day, including DO, PH, water temperature, ammonia nitrogen, nitrite nitrogen, and nitrate.

[0023] (3) Add exogenous carbon source: Calculate the amount of exogenous carbon source added according to the protein content and daily feeding amount of the turtle feed, so that the C / N ratio in...

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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 flocculation under the condition of no or little oxygenation indoors. Background technique [0002] The biofloc technology is to control the C / N ratio of the water body by adding carbon sources, and the heterotrophic microorganisms in the culture pond form biofloc under controllable conditions. As an additional food source for fish and shrimp, biofloc can effectively purify water quality by absorbing and transforming residual bait, animal excrement and secondary metabolites of harmful organisms through heterotrophic microorganisms. [0003] The biofloc technology is fundamentally different from the previous technologies. The object of the biofloc technology is not a certain species suitable for farming, but the characteristics of the water body. Through the control and management of microorganisms, it solves the problems that are prone to occur in i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12N1/20A23K1/18A23K1/00
Inventor 王广军陈鹏飞郁二蒙谢骏李志斐
Owner 广州先得生物技术有限公司
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