Research Article

The effect of feeds containing different protein levels on growth and survival rates of European sea bass (Dicentrarchus labrax L., 1758) juveniles grown in freshwater

Volume: 40 Number: 4 December 15, 2023
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The effect of feeds containing different protein levels on growth and survival rates of European sea bass (Dicentrarchus labrax L., 1758) juveniles grown in freshwater

Abstract

In this study, the effect of the use of feeds containing different protein ratios on the growth performance of juvenile sea bass (Dicentrarchus labrax L., 1758) reared in freshwater was investigated. Sea bass fry with an average body weight of 1.0 ± 0.03 g were stocked in 120 liter tanks in triplicate after their adaptation to freshwater. The feeds used in the study had different protein/similar fat content. Accordingly, the experimental groups were named as 45CP (45% CP / 18% CF), 50CP (50% CP / 18% CF) and 55CP (55% CP / 18% CF). At the end of the experiment, the highest body weight gain was 5.84 ± 0.03 g in the 55CP group, while the other groups were 5.73 ± 0.09 g (45CP) and 5.8 ± 0.08 g (50CP). SGR rates were similar for all three groups and there was no statistical difference between the groups (P>0.05). SGR values of the groups were calculated as 1.94 ± 0.04 (45CP), 1.89 ± 0.01 (50CP), 1.91 ± 0.02 (55CP), respectively. There was no statistical difference between the 45CP and 55CP groups, while the 50CP group showed a statistically lower FCR rate than the other groups (P<0.05). FCR values were calculated as 1.36 ± 0.05, 1.29 ± 0.03, 1.37 ± 0.04, respectively. There was no difference between the survival rates of the groups. According to the results of the study, it was concluded that sea bass fish can be raised in freshwater, especially in the fry stage, and that it is more effective than the commercial feeds currently used.

Keywords

Ethical Statement

Approval was obtained from Ege University Animal Experiments Ethics Committee (25.12.2019/2019+-116)

References

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Details

Primary Language

English

Subjects

Pisciculture

Journal Section

Research Article

Early Pub Date

December 8, 2023

Publication Date

December 15, 2023

Submission Date

August 18, 2023

Acceptance Date

November 20, 2023

Published in Issue

Year 2023 Volume: 40 Number: 4

APA
Gamsız, K., Korkut, A., & Kop, A. (2023). The effect of feeds containing different protein levels on growth and survival rates of European sea bass (Dicentrarchus labrax L., 1758) juveniles grown in freshwater. Ege Journal of Fisheries and Aquatic Sciences, 40(4), 292-297. https://doi.org/10.12714/egejfas.40.4.08

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