Comparison among Different Gilthead Sea Bream (Sparus aurata) Farming Systems: Activity of Intestinal and Hepatic Enzymes and 13C-NMR Analysis of Lipids
نویسندگان
چکیده
In order to evaluate differences in general health and nutritional values of gilthead sea bream (Sparus aurata), the effects of semi-intensive, land-based tanks and sea-cages intensive rearing systems were investigated, and results compared with captured wild fish. The physiological state was determined by measuring the activity of three different intestinal digestive enzymes: alkaline phosphatase (ALP), leucine aminopeptidase (LAP) and maltase; and the activity of the hepatic ALP. Also, the hepatic content in protein, cholesterol, and lipid were assessed. 13C-NMR analysis for qualitative and quantitative characterization of the lipid fraction extracted from fish muscles for semi-intensive and land based tanks intensive systems was performed. The lipid fraction composition showed small but significant differences in the monounsaturated/saturated fatty acid ratio, with the semi-intensive characterized by higher monounsaturated and lower saturated fatty acid content with respect to land based tanks intensive rearing system.
منابع مشابه
Biology and stock assessment growth and biometrics of the gilthead sea bream, Sparus aurata (Linné. 1758) on the coast of Kabylia: Region of Tigzirt province of Tizi-Ouzou
This work which relates to the study of growth and biometrics is an essential tool for a better monitoring of the stocks of the Gilthead sea bream Sparus aurata on the coast of Kabylia: region of Tigzirt province of Tizi-Ouzou. The results showes that the annual growth of S. aurata is 3.4 cm (all sexes combined) while the growth parameters calculated by the Von Bertalanffy equation are establis...
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