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    Adaptation, growth and bio-economic evaluation of wild-caught salema (Sarpa Salpa Linnaeus, 1758) juveniles in culture conditions
    (Natl Inst Science Communication-Niscair, 2018) Sahinyilmaz, Merve; Yigit, Murat
    Present study was conducted to provide information on the adaptation capability of salema to culture conditions and evaluate growth performance and bio-economic benefits as a potential candidate for marine aquaculture and alternative to fishing. Wild fish caught using casting nets were fed with trash fish initially until adapted to tank conditions. Thereafter fish were adapted to pellets by gradual replacement of trash feed. Dry feed adapted fish were then fed experimental diets containing four different protein levels (25, 30, 35, and 40%). Overall, salema fed lower protein diets showed better performance and bio-economic results. Broken-line analyses indicated that the optimum protein for best performance were 30.5% under the conditions applied in this study. Finally, salema might be acclimatized to culture conditions and artificial diets, however, further studies are encouraged under different water temperatures with long-term feeding and different stocking densities, artificial spawning and fry production before a conclusion on the feasibility of salema culture can be made.
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    Evaluation of Dietary Protein Level in Practical Feed for Twoband Bream Diplodus vulgaris
    (Wiley, 2018) Yigit, Murat; Sahinyilmaz, Merve; Acar, Umit; Kesbic, Osman; Yılmaz, Sevdan; Bulut, Musa; Gurses, Kaan
    The effects of different dietary protein levels on growth performance and health status of TwobandBream Diplodus vulgaris juveniles were investigated. Three test diets that had increasing protein levels (30, 36, and 42%) and used fish meal as the protein source were formulated. Each of the test diets was fed in triplicate groups of 28 juvenile fish (initial weight, 23.65 +/- 0.34 [mean +/- SD]) to satiety for a period of 80d. Growth performance and feed utilization were best in the group fed the diet with a protein level of 36%. Ammonia nitrogen excretion showed an increasing trend as dietary protein levels increased, and retention rates of ammonia nitrogen per intake were highest in fish fed the 42% protein diet. Whole-body proximate composition and hematological variables were not significantly affected by protein level in the diets. However, serum glucose, aspartate aminotransferase (AST), alanine aminotransferase (ALT), and lactate dehydrogenase (LDH) values were significantly affected by dietary protein level and showed an increasing trend as the dietary protein level in the diets increased. As a result, an improved health status of Twoband Bream was observed in the fish fed a 36% protein level.