FIELD: ichthyology, pisciculture.
SUBSTANCE: one should apply the presence of natural inhibition factor of antibodies M activity in fish blood being the essential in sturgeon fishes followed by registering the decrease in titers. Reaction of indirect hemagglutination should be carried out with an erythrocytic salmonellosis O diagnostic kit, and one should dilute blood serum with isotonic sodium chloride solution at the ratio of 1:20, mix with equal quantity of test serum at 1:20 dilution to be incubated at 37 C for 4 h. The method enables to evaluate physiological state in sturgeon fishes.
EFFECT: higher efficiency of evaluation.
2 ex
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