Çalışmada materyal olarak 12 haftalık Amerikan Bronz x Betina melezi erkek hindiler kullanıldı. Hindiler 4 gruba ayrıldı. Birinci gruba ad libitum, 2., 3. ve 4. gruplara sırasıyla %7, %14 ve %21 sınırlı besleme uygulandı. 56 günlük besi sonunda hindilerin canlı ağırlıkları saptandı ve kesim esnasında kan alınarak serum glukoz, toplam ko-lesterol, trigliserit, albumin, globulin, toplam protein, sodyum (Na), potasyum (K), klor (Cl) ve inorganik fosfor (İP) düzeyleri otoanalizör kullanılarak ölçüldü. Besi sonunda en düşük ağırlıklar % 21 sınırlı besleme uygulanan grupta saptanırken (p

12 weeks old American Bronz x Betina crossbred male turkeys were used as materials in this study. Turkeys were divided four groups. First group was fed ad libitum, 2., 3. and 4. groups were fed 7%, 14% and 21% restricted feeding, respectively. At the end of feeding for 56 days, live weights of turkeys were determined and blood was taken during the slaughtering. Serum glucose, total cholesterol, triglyceride, albumin, globulin, total protein, sodium (Na), potassium (K), chloride (Cl) and inorganic phosphorus (IP) levels were measured by using auotanalyzer. Serum glucose, total cholesterol, triglyceride, albumin, globulin, total protein levels were higher in 21% restricted group than ad libitum, 7% and 14% restricted groups in statistically various levels (p<0.01 and p<0.001), while 21% group had less live weights comparing to the other groups (p<0.001). The results of the study indicated that the restricted feeding of turkeys should not be more than 14% of ad libitum feeding for not causing decreases of live weights and disturbances of metabolism.