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

Kutsal Gamsız; Ali Korkut; Aysun Kop

doi:10.12714/egejfas.40.4.08

TR EN

Farklı protein seviyesi içeren yemlerin tatlısuda yetiştirilen Avrupa levreği (Dicentrarchus labrax L., 1758) yavrularının büyüme ve yaşama oranları üzerine etkisi

Öz

Bu çalışmada tatlı suda yetiştirilen yavru levrek (Dicentrarchus labrax L.,1758) balıklarının beslenmesinde farklı protein oranları içeren yemlerin kullanımının büyüme performanslarına üzerine etkisi araştırılmıştır. Ortalama canlı ağırlıkları 1,0 ± 0,03 gram olan levrek yavruları, tatlı suya adaptasyonlarından sonra 120 litre hacimdeki tanklarda üçer tekrarlı olacak şekilde stoklanmıştır. Çalışmada kullanılan yemler farklı protein / benzer yağ içeriğindedir. Buna göre deneme grupları 45CP (%45 HP / %18 HY), 50CP (%50 HP / %18 HY) ve 55CP (%55 HP / %18 HY) olarak isimlendirilmiştir. Deneme sonunda en yüksek canlı ağırlık artışı 5,84 ± 0,03 g ile 55CP grubunda iken diğer gruplarda 5,73 ± 0,09 g (45CP), 5,8 ± 0,08 g (50CP) olarak tespit edilmiştir. SGR oranları her üç grup için benzer oranlarda olup gruplar arasında istatistiki bir farklılık bulunmamaktadır (P>0,05). Grupların SGR değerleri sırası ile 1,94 ± 0,04 (45CP), 1,89 ± 0,01 (50CP), 1,91 ± 0,02 (55CP) olarak hesaplanmıştır. FCR değerlerine bakıldığında 45CP ve 55CP grupları arasında istatistiki bir farklılık tespit edilmemişken, 50CP grubu istatistiki olarak diğer gruplardan daha düşük bir FCR oranı göstermiştir (P<0,05). FCR değerleri sırası ile 1,36 ± 0,05, 1,29 ± 0,03, 1,37 ± 0,04 olarak hesaplanmıştır. Grupların yaşama oranları arasında bir farklılığa rastlanmamıştır. Çalışma sonucuna göre özellikle yavru dönemlerinde levrek balıklarının tatlı suda yetiştirilebileceği, halen kullanılmakta olan ticari yemlere göre daha düşük oranlarda protein içeren yemlerle de balıkların beslenebileceği gözlenmiştir.

Anahtar Kelimeler

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)

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Details

Primary Language

English

Subjects

Pisciculture

Journal Section

Research Article

Authors

Kutsal Gamsız ^*
0000-0003-3277-9488
Türkiye

Ali Korkut
0000-0002-1096-5725
Türkiye

Aysun Kop
0000-0003-1724-5672
Türkiye

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 1970 Volume: 40 Number: 4

DOI

https://doi.org/10.12714/egejfas.40.4.08

IZ

https://izlik.org/JA47TG29RM

Cite

RIS / Bibtex

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

Cited By

Integrated aquaculture of whiteleg shrimp Litopenaeus vannamei and European seabass Dicentrarchus labrax: impacts on performance, welfare, blood physiological response, carcass traits, productivity, and farm profitability

Aquaculture International

https://doi.org/10.1007/s10499-025-01907-y