- Turkish Journal of Veterinary and Animal Sciences
- Volume:26 Issue:5
- Growth Performance, Body Traits and Fillet Composition of the European Sea Bass (Dicentrarchus labra...
Growth Performance, Body Traits and Fillet Composition of the European Sea Bass (Dicentrarchus labrax) Reared in Various Salinities and Fresh Water
Authors : Orhan Tufan EROLDOĞAN, Metin KUMLU
Pages : 993-1001
View : 19 | Download : 3
Publication Date : 0000-00-00
Article Type : Research Paper
Abstract :The effects of various salinities and fresh water insert ignore into journalissuearticles values(FW); insert ignore into journalissuearticles values(0.4 ppt); on the growth performance, body traits and fillet composition of juvenile and young sea bass insert ignore into journalissuearticles values(Dicentrarchus labrax); in FW were investigated in two separate experiments in this study. In Experiment 1, following acclimation, sea bass juveniles insert ignore into journalissuearticles values(9.5 ± 0.5 g); were reared in 240-L fibreglass tanks insert ignore into journalissuearticles values(40 x 40 x 150 cm); for 90 days in five different treatments insert ignore into journalissuearticles values(FW, 10, 20, 30 and 40 ppt);. The fish cultured in FW, 10 and 20 ppt grew better than those at 30 or 40 ppt insert ignore into journalissuearticles values(P < 0.05);. Salinity did not affect the crude protein, lipid or ash content of the fish insert ignore into journalissuearticles values(P > 0.05);. Yet, the dry weight of the fish grown in FW was significantly lower than those reared in saline waters insert ignore into journalissuearticles values(P < 0.05);. In Experiment 2, young fish weighing 108 ± 5.4 g were stocked in 1.5-ton tanks following acclimation to FW and seawater insert ignore into journalissuearticles values(SW);. No fish mortality was recorded in complete FW over the period of 90 days. The final weights of the fish cultured in SW and FW were 174.15 ± 11.24 g and 180.85 ± 7.14 g, respectively insert ignore into journalissuearticles values(P > 0.05);. Fish growth rates were 0.72 g day-1 in SW and 0.81 g day-1 in FW. Salinity did not significantly affect the meat crude protein, lipid or ash content insert ignore into journalissuearticles values(P > 0.05);. Food conversion efficiency insert ignore into journalissuearticles values(FCE); was slightly higher in SW insert ignore into journalissuearticles values(77%); than in FW insert ignore into journalissuearticles values(74%);. The mean fillet weight of the fish reared in FW was 16% higher than for SW. Fillet yields in FW and SW were 52% and 50%, respectively. From the blood plasma ions, Na+ and Cl- were lower in the fish grown in FW as compared to SW insert ignore into journalissuearticles values(P < 0.05);, but K+ level did not vary between the treatments insert ignore into journalissuearticles values(P > 0.05);.Keywords : Dicentrarchus labrax, sea bass, body traits, salinity, freshwater, growth, fillet yield, fillet composition