وحید مرشدی

Fish may experience periods of food deprivation or fasting in nature and culture condition. In this study, effect of short-terms starvation (0, 5, 7 and 10 days) on glucose, triglyceride, protein and cholesterol levels of rainbow trout was investigated. After 3 weeks acclimation to experimental conditions, 180 juvenile rainbow trout with the average initial weight of 39 ±2.73 (mean ± SE) were randomly distributed between twelve circular, 100-l, fiber glass holding tanks. In this trial, four treatments with three replications were established. Controls (C) were fed to two times daily to apparent satiation. Other treatments experienced 5 (D1), 7 (D2) and 10 (D3) days starvation, respectively. Blood samples were taken from each experimental treatment at the end of the starvation periods. In plasma glucose, triglyceride, protein and cholesterol values were not observed any significant different between control and starvation treatments (P>0.05). Overall, the present study showed that during occurrence unpredictable stress such as transporting and sorting, food deprivation, considering, there are not any significant effects on biochemical blood factors, could be an appropriate method for reducing metabolism.