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Öğe EVALUATION OF SOYBEAN MEAL AS A PROTEIN SOURCE AND ITS EFFECT ON GROWTH AND NITROGEN UTILIZATION OF BLACK SEA TURBOT (PSETTA MAEOTICA) JUVENILES(Natl Taiwan Ocean Univ, 2010) Yigit, Murat; Ergun, Sebahattin; Turker, Ali; Harmantepe, Burcu; Erteken, AdnanThree experimental diets were formulated to be iso-nitrogenous (550 g kg(-1) protein) and iso-caloric (20.5 kJ gross energy g(-1) diet) by substituting fish meal (FM) for defatted soybean meal (SBM) at levels of 0, 10 and 20% replacement in order to evaluate the effects of replacing FM with deflated SBM in diets for Black Sea turbot. Diets were fed to triplicate groups of young Black Sea turbot (mean initial weight of 30.2 +/- 0.2 g) for 60 days. Turbot fed all three diets had no significant difference (P > 0.05) in final weight, specific growth rate, nutrient utilization, Nitrogen loss or retention. Survival rate was 100% in all treatments. The results of this study indicate that fish meal can be replaced with soybean meal up to 20% level in diets for young Black Sea turbot without adverse effects on growth, nutrient utilization or nitrogen balance. This may increase profitability by allowing the production of less expensive feeds, hence supporting, the sustainable growth of turbot culture industry with environment-friendly diets.Öğe Partial Replacement of Fishmeal by Defatted Soybean Meal in Diets for Black Sea Turbot (Psetta maeotica): Growth and Nutrient Utilization in Winter(Israeli Journal Of Aquaculture-Bamidgeh, 2008) Ergun, Sebahattin; Yigit, Murat; Turker, Ali; Harmantepe, BurcuThe objective of the present study was to evaluate replacement of white fishmeal by soybean meal in practical diets for Black Sea turbot (Psetta maeotica) at levels of 0, 10%, and 20%. The diets were fed to triplicate groups of juvenile Black Sea turbot (initial body weight 18 g) for 60 days. At the end of the trial, there were no differences in growth performance, feed utilization, and nitrogen retention between the control group fed 100% fishmeal and the experimental groups fed 10% or 20% soybean meal. In conclusion, 20% inclusion of soybean meal can allow reduction of white fishmeal by up to 14%, leading to savings on fishmeal protein.