NEW RUSSIAN DEVELOPMENT FOR CLOSED AQUACULTURE

New Russian development for closed aquaculture. Scientists from the Don State Technical University (DSTU) in Russia have proposed a special bacterial complex that will allow fish and other aquatic organisms (marine and freshwater organisms that constantly inhabit the aquatic environment) to breed in closed environments without purification systems. According to them, this approach will significantly reduce the costs of industrial fisheries.

In industrial aquatic farms that cultivate fish and other aquatic organisms, closed water supply devices (RAS) are most often used to create the necessary conditions, the scientists of the DSTU said. These are complex systems consisting of several water tanks, mechanical and biological filters, devices for sterilising and heating water, powerful pumps and other elements.

Biofloc technology is a profitable alternative to this approach, the scientists said. It is based on the use of special microflora capable of processing toxic waste products of aquatic organisms and even converting them into nutrients. Water purification using this technology does not require additional reservoirs and expensive equipment.

DSTU specialists have improved the Biofloc technology, proposing for it a special active mixture of probiotic microorganisms. According to scientists, the found strain of probiotics allows you to start fish production in the shortest possible time with a minimum of costs. Also, DSTU has developed a device for the efficient distribution of the new product in the pool with fish.

“Thanks to our bacterial suspension, all waste products of fish and other organisms are converted into non-toxic biomass. Our composition also inhibits pathogens, and when it gets inside a cultured organism, it improves its intestinal microbial balance,” said Professor Irina Tkacheva, deputy dean of the Agroindustrial Faculty of DSTU.

The new development, according to the creators, in the future will allow fisheries to completely abandon recirculating water systems. This will greatly simplify maintenance and dramatically reduce the total costs of breeding fish, shrimps and any other aquatic organisms, DSTU scientists are sure.

“The drug was tested on the African clary catfish, the species most often cultivated using the Biofloc technology,” noted one of the authors of the work, Vyacheslav Polyakhov.

In the future, the research team will continue to search for optimal compositions of probiotics for breeding various types of aquatic organisms for the food industry.

Source: ria.ru