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Effects of dietary vitamin C on tissue ascorbate and collagen status in sturgeon hybrids (Acipenser ruthenus L. x Acipenser baeri Brandt)
Author(s) -
Gy. Papp Zs,
Saroglia M.,
Jeney Zs.,
Jeney G.,
Terova G.
Publication year - 1999
Publication title -
journal of applied ichthyology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.392
H-Index - 62
eISSN - 1439-0426
pISSN - 0175-8659
DOI - 10.1111/j.1439-0426.1999.tb00246.x
Subject(s) - sturgeon , ascorbic acid , biology , vitamin c , vitamin , endocrinology , medicine , biochemistry , zoology , food science , fish <actinopterygii> , fishery
Summary The aim of this study was to determine the vitamin C status of various tissues, and collagen concentration in cartilage, of a sterlet ( Acipenser ruthenus L.) x Siberian sturgeon ( Acipenser baerii Brandt) hybrid fed different dietary vitamin C rations. Growth, vitamin C status and collagen concentration were measured in groups fed diets supplemented with 150, 300, 600 mg.kg ‐1 ascorbate‐2‐polyphosphate (APP); 100, 200, 400 mg.kg ‐1 ascorbate‐2‐monophosphate (AMP), 1000 mg.kg ‐1 L‐ascorbic acid (AA) and with an almost ascorbate free diet (Total AA > 5 mg.kg ‐1 ), as a control. No significant differences in growth were observed, and no external symptoms of scurvy developed in the vitamin C‐free group. No reduction in total vitamin C concentration was revealed in the tissues examined, as compared with initial concentrations. Ascorbate‐2‐phosphate esters were only found in kidney or hepatopancreas of fish fed with these vitamin C derivatives. Significantly (p<0.05) lower contents of collagen were observed in the control group after 8 weeks feeding. No significant differences were found among the groups after 16 weeks although the collagen concentration in the cartilage was slightly lower in the control group without vitamin C supplementation.