Efectos de una dieta inmunoestimuladora y de la permanencia en temperatura constante sobre el metabolismo hepático de carbohidratos en dorada Sparus aurata L., 1758
- R. Laiz-Carrión
- María del Pilar Martín del Río
- José Luis Soengas Fernández
- Juan Miguel Mancera
ISSN: 0074-0195
Year of publication: 2005
Volume: 21
Issue: 1-4
Pages: 83-88
Type: Article
More publications in: Boletín. Instituto Español de Oceanografía
Abstract
The impact of an immunostimulant diet ¿frequently used to avoid winter syndrome in aquaculture¿ on liver carbohydrate metabolism was assessed over a period of 230 days in the gilthead sea bream Sparus aurata L., 1758. An enhancement of liver glycolytic, glycogenolytic and gluconeogenic potential in fish fed with immunostimulant diet was found, compared to a control group, suggesting an increase in liver metabolic activity. Moreover, immunostimulant-treated fish also showed higher values of lysozyme activity, along with a decrease in mortality, suggesting an increase in the nonspecific defence mechanism. The group kept at a 20 oC constant temperature maintained appetite at normal levels, avoiding possible winter syndrome and obtaining better values for the production parameters studied (final weight, weight gain and mortality), compared with the control group.