A PREVENTIVE MEASURES ALGORITHM FOR JUVENILE GRAYLING REPRODUCTION IN A TEMPORARY FISH FARM (MANA RIVER)
We have suggested the algorithm of preventive measures to increase the survival rate of juvenile Siberian grayling during the growing in a temporary fish-breeding farm (TFF), installed on Mana river (the right feeder of Yenisey river). Influence of the suggested algorithm to a parasite burdens the juvenile and it’s survive were investigated. Prevalence of Trichodinidae gen. sp. is 26 % in conditions of TFF and 100 % among Juvenile of natural conditions (Mana river), mean intensity – 2,5 examples, 222 examples in natural conditions. So, conducted research shows the effectiveness of offered of preventive measures. The measures package includes the using of drugs Antibak-500, Vetom-2, 0,5 % of common salt solution and formaldehyde water solution. Juvenile grayling survival rate during the growing in TFF is 80 %. Obtained results could be used for Siberian grayling juvenile growing in natural conditions.