THE EFFECT OF PROBIOTIC DIET ON HEMATOLOGY AND PISCICULTURAL PARAMETERS OF YEARLING HYBRIDS OF RUSSIAN AND SIBERIAN STURGEON

In fish farming practices, stocking density is a key factor in determining the productivity and profitability of commercial fish farms. the use of probiotics as farm animal feed supplements increases the animal’s growth and improve its health by increasing its resistance to disease. this study was undertaken to examine the effect of dietary probiotics on yearling hybrids of russian and siberian sturgeon, based on hematological profile and piscicultural performance. the experience was carried out in 4 groups (control and treatment). in control group, probiotic was not applied in diet but in treatment groups, probiotics «Bacell», «Monosporin», and «Prolam» was administered in feed at a concentration of 2%. as a result, a positive influence on growth performance and survival rate were assessed together with improvement of physiological status (based on hematological indices). thus, probiotics addition to diet had the effect on erythrocyte count, hemoglobin, leucocyte count, percent of lymphocyte, serum total protein, percent of neutrophile and monocyte the results suggest that probiotics can stimulate immune parameters hybrids of russian and siberian sturgeon and can be successfully used in fishfarming.