METHOD OF GAMMARUS CULTIVATION TO FEED VALUABLE FISH SPECIES

Abstract

The proposed utility model relates to the field of fish farming and can be used to obtain live food for feeding valuable fish. The technical result is achieved as follows: - a prefabricated multi-component woody-shrub substrate consists of individual components in the form of a bunch of tied branches. A weight is tied at the bottom; - individual components are tied in a line with a leader cord. Each individual component is tied to the leader cord with a vertical leash; - the use of a ready-made prefabricated woody-shrub substrate allows for the rapid creation of protected areas for gammarus; - lines of connected components run along the slope of the reservoir from a depth of 0.5 m to a depth of 2 m. During a temporary decrease in the water level, only individual components in shallow water remain above water. The gammarus population, however, has the opportunity to migrate to the components in deep water. This coverage of shallow and medium depths helps protect areas from drying out during water level fluctuations.The number of parallel lines can reach several hundred pieces; - the woody and shrubby substrate formed by lines of connected components creates a protected habitat for gammarus, providing it with protection from fish. Zooplankton and detritus, which serve as food for gammarus, also accumulate here; - gammarus collected from other parts of the reservoir are released into the protected area. Providing food and protection from fish contributes to the accelerated formation of a commercial stock; - when collecting farmed gammarus, a boat passes along the leader line and lifts an individual component by the leash. The gammarus are shaken off it into a plastic container on the boat, and then lowered back into the water. This allows for the efficient collection of farmed gammarus; - the collected gammarus are poured alive into pools or cages with farmed valuable fish for feeding. This ensures that the fish receive adequate nutrition, quickly achieving marketable weight.Natural live foods provide all the necessary nutritional value and contain the essential amino acids needed by fish. Using natural live foods also reduces the cost of purchasing expensive artificial foods.