The use of water with an electrochemically regulated redox potential in the maintenance of sturgeon fish in closed water supply installations

Abstract

The active interest of modern researchers in studying the structure of water, its unique biological and physical properties is due to the peculiarities of structured water: it does not contain impurities, and its properties are similar to biological fluids that are part of animal and plant cells. The molecules of structured water are not scattered randomly, but are connected to each other in a single structure. Negatively charged structured water has a biostimulating effect on fish, which manifests itself in increasing survival, fertilization of eggs, accelerating the growth rate of juveniles, reducing the load of pathogenic microflora on the body of aquatic organisms. The cultivation of sturgeons was carried out at the optimal water temperature for their growth – 22 °C, the oxygen content did not exceed 8.0 mg/l. Special attention was paid to pH due to its shift towards the alkaline reaction of the medium in water with negative (lowering) values of the redox potential (RP). During experiments on sturgeons, the positive effect of water with negative RP on the body of Russian sturgeon × Lena sturgeon (RS × LS) hybrids was established, which manifested itself in an increase in fish-breeding and biological indicators of cultivation. The absolute increase in individuals kept in water with controlled RP was 26% higher compared to the control. The average daily growth rate was also higher in individuals of the experimental group, it was 0.72%. It was noted that when fish were kept in water with electrochemically regulated RP, an improvement in hematological parameters was observed (hemoglobin – 73.3 g/l, total protein – 22.7 g/l), as well as a decrease in the rate of erythrocyte sedimentation to 2.5 mm/h, which indicates a favorable effect of structured water on the physiological state of aquaculture facilities.