A biological agent capable of inhibiting the growth of Vibrio in shrimp ponds, its preparation method and application

Abstract

The invention provides a starter with a biological agent for inhibiting the growth of Vibrio in shrimp ponds. Bdellovibrio thaler, 20% to 40% of Bacillus, 20% to 40% of lactic acid bacteria and 10% to 30% of marine red yeast. The present invention also extracts a biological preparation capable of inhibiting the growth of Vibrio in shrimp ponds and a preparation method thereof. The biological preparation is mainly prepared from the fermentation raw material after activation of the above-mentioned starter. The present invention prepares biological preparations by rationally matching a variety of probiotic fermentation raw materials, and utilizes the mutual cooperation of different strains to obtain a biological preparation that can effectively inhibit the growth of Vibrio in shrimp ponds. The preparation method of the preparation is simple and does not require much equipment. High, operability, easy to promote and use in large-scale farms or aquaculture cooperatives.

Description

technical field [0001] The invention relates to the field of aquaculture water quality control, in particular to a biological agent capable of inhibiting the growth of Vibrio in shrimp ponds, a preparation method and application thereof. Background technique [0002] Shrimp farming is an important pillar industry in my country's aquaculture industry. However, in recent years, with the increase of aquaculture production, the increase of aquaculture density, the large-scale development of prawn aquaculture, and the aggravation of aquaculture pollution, the quality of aquaculture environment has continued to deteriorate, leading to an increase in the number of pathogenic organisms and a faster transmission speed, and the aquaculture diseases are becoming more and more serious. Diseases in shrimp farming, especially bacterial diseases, occur frequently and have serious impacts, causing huge economic losses and greatly limiting the development of aquaculture in my country. Breedi...

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Problems solved by technology

At present, biological contact oxidation (Liao Shaoan et al., 2008), biological turntable (Brazil, 2006), biological fluidized bed (Bortone et al, 2003) and other processes are widely used in the biochemical treatment of aquaculture wastewater. In these processes, the biological phase is mostly It is derived from oligotrophic flora in natural or artificial environments, and cannot adapt to the nutritional environment of aquaculture wastewater. The unit volume processing load of the microbial treatment module is actually not high, which greatly affects the application of traditional microbial treatment technologies.

[0006] At present, single or compound microbial strains are generally used to control water quality at home and abroad, but because microorganisms are greatly affected by the external environment and have poor resistance to adverse environmental impacts, once the system is damaged, it is difficult to recover, so the treatment effect is unstable.

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