Facility culture system and method utilizing diatoms to prevent prawn diseases

Abstract

The invention relates to a facility culture system utilizing diatoms to prevent prawn diseases. The facility culture system includes a group of prawn culture ponds arranged side by side, and a group of diatom culture systems is fixedly arranged at the side of each prawn culture pond; the diatom culture system includes an open diatom culture barrel, an exhaust pipe of a carbon dioxide steel cylinder extends into the diatom culture barrel, a pH sensor extends into the diatom culture barrel and is connected with a control instrument, the control instrument is also connected with a solenoid valveon the exhaust pipe, the bottom of the diatom culture barrel is provided with an algae liquid outlet, and the algae liquid outlet is communicated with the prawn culture ponds through pipes. In the facility culture system, discharge water of the open diatom culture systems is added as an exogenous microalgae to the prawn culture ponds according to a certain proportion, and the diatoms can be maintained as the dominant algae species in the prawn pond throughout the breeding process, and the diatoms can be effectively prevented from being converted into green algae and cyanobacteria or dying, thestability of the algae is maintained, so that the prawn diseases are prevented and controlled, and the prawn culture survival rate and yield are improved.

Description

technical field [0001] The invention relates to a facility culture system and method for preventing and controlling prawn diseases by using diatoms, and belongs to the technical field of prawn culture. Background technique [0002] Phytoplankton are collectively referred to as microalgae, and microalgae occupy an important position in the shrimp culture system. It has the function of maintaining the ecological balance of the water body and stabilizing the culture environment. There is an antagonistic relationship between algae and bacteria. Algae can produce antibiotic substances that inhibit the growth of bacteria. During the growth process, algal cells continuously release many metabolites to the surroundings and thus form a bacterial community with unique structure and function. Diatoms are an important part of microalgae in the shrimp culture system, and can be used as natural live bait for shrimp seedlings. The microalgae community with diatoms as the dominant populatio...

AI Technical Summary

Problems solved by technology

[0006] In the early stage of shrimp farming, diatoms can quickly become the dominant species due to their nutritional competitive advantages, but as the breeding process progresses, the dominant species gradually transforms from diatoms to green algae and cyanobacteria, some of which can secrete toxins, such as red tide species. dinoflagellates, cyanobacteria such as Microcystis, Anabaena, and Oscillatoria, etc., and these microalgae generally lack nutrients such as protein and amino acids, or are large in size and low in nutritional value, and are difficult to digest and easily cause shrimp Gastrointestinal disease, which may be harmful to the healthy growth of shrimp in high-density shrimp culture environment

Images