Open AccessECOLIGICAL APPROACH IN IMPROVING EFFICIENCY OF INDUCTRIAL METHOD OF OBTAINING AQUACULTURE PRODUCTS
Author(s) -
Tatyana Gridina,
Peter Geraskin
Publication year - 2021
Publication title -
vestnik astrahanskogo gosudarstvennogo tehničeskogo universiteta. seriâ: rybnoe hozâjstvo
Language(s) - English
Resource type - Journals
eISSN - 2309-978X
pISSN - 2073-5529
DOI - 10.24143/2072-9502-2021-2-97-103
Subject(s) - aquaculture , aquaponics , recirculating aquaculture system , environmental science , raw material , hydroponics , process engineering , biochemical engineering , pulp and paper industry , fish <actinopterygii> , computer science , agricultural engineering , fishery , biology , ecology , agronomy , engineering
The article considers using the latest technologies with recirculation aquaculture systems (RAS), which allows growing aquaculture objects at high seeding densities all year round. However, it has a number of difficulties and, first of all, the need to purify water from metabolites. An alternative to RAS technology is an ecological approach to growing aquaculture products, which is implemented by us using the artificial eco-systems or, otherwise, agrohydroecosystems based on RAS. An experiment was carried out on the joint cultivation of a sterlet × beluga hybrid with tilapia in an aquaponic module of an integrated storey unit (IED); an increase in the mass accumulation coefficient and average daily growth rate of fish was noted. Due to the right choice of parameters that satisfy the conditions for growing all experimental objects application of IED technology allows obtaining a high increase in the mass of aquatic organisms and additional products per unit area (lettuce, strawberries). The introduction of a hydroponics block into the system reduces the amount of nitrogenous substances in the medium, while an even greater effect can be achieved by adding a microbiological preparation (culture liquid) into the system. When using an IED, raw materials and energy are consumed most efficiently, with a minimum impact on the envi-ronment.