Effect of Taurine on the Glycemia Level and the Activity of Hydrolases in the Intestinal Mucosa in Carp (Cyprinus carpio L.)

Upon a single injection, taurine (50 and 300 mg/kg) and its amide derivative taurepar (50 mg/kg), irrespective of diet and kinds of stress, as a rule, slightly influence the glycemia level in carp. A long-term load of taurine (a total dose of 1250 mg/kg) significantly reduces the glucose concentration in the blood of fishes kept on a carbohydrate diet. Both preparations existentially change the ratio of proteolytic (PA) and amylolitic (AA) activities in all studied fish. As a result, the G/P coefficient increases considerably. It is suggested that the increase in glycosidase activity under taurine injections has an adaptive significance for benthophagous carp, a large part of the diet of which consists of carbohydrate components.