@article{article_1552135, title={Determination of the Compensatory Growth Response, Mineral and Antioxidant Enzyme Activities of European Sea Bass Fingerlings (Dicentrarchus labrax) in Fasting and Re-feeding}, journal={Çanakkale Onsekiz Mart University Journal of Marine Sciences and Fisheries}, volume={8}, pages={1–13}, year={2025}, DOI={10.46384/jmsf.1552135}, author={Dernekbaşı, Seval and Kaya Öztürk, Dilara and Yürüten Özdemir, Keriman and Karayücel, İsmihan}, keywords={European sea bass, Dicentrarchus labrax, Antioxidant enzymes, Mineral matters, Fasting, Re-feeding, Compansatory growth}, abstract={Understanding compensatory growth in European sea bass (Dicentrarchus labrax) is also crucial for optimizing aquaculture practices as it can lead to more efficient feeding strategies and improved fish health. To this end, this study evaluated the effects of fasting and re-feeding on growth performance, mineral and antioxidant enzyme activities of European sea bass fingerlings. The experiment involved five treatments, each with three replicates. The control treatment was fed continuously, while treatments A1, A2, A3, and A4 were fasted for one, two, three, and four weeks, respectively. Following the fasting period, all treatments were fed to satiation twice daily for four weeks. At the end of the trial, the control treatment showed the best growth during the fasting period, while the growth of the other treatments decreased with the duration of fasting (p <0.05). Consequently, the highest specific growth rate (SGR), feed conversion ratio (FCR) and hepatosomatic index (HSI) were observed in the control treatment (p <0.05). During the re-feeding period, potassium (K) and calcium (Ca) levels significantly decreased compared to the fasting period. The ratios of Ca, K, sodium (Na), and iron (Fe) were higher during the fasting period than during the re-feeding period. A4 treatment, which lasted for four weeks, had the highest mineral content during the fasting period compared to the control treatment in both periods. In the re-feeding period, the control treatment had the lowest levels of Ca, Fe, phosphorus (P), manganese (Mn), and zinc (Zn) (p <0.05). Antioxidant enzyme activities, including superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), and lipid peroxidation (LPO), were highest in treatments A2, C, and A1 during the fasting period (p <0.05). These values significantly decreased by the end of the re-feeding period (p <0.05). Therefore, this study concludes that re-feeding after fasting resulted in partial compensatory growth in the European sea bass fingerlings examined.}, number={1}, publisher={Çanakkale Onsekiz Mart University}