effects of starvation and re-feeding on some hematological and plasma biochemical parameters of juvenile persian sturgeon ,acipenser persicus borodin, 1897

the effect of starvation and re-feeding was investigated on growth, hematology and biochemical parameters in juvenile persian sturgeon (acipenser persicus). three hundred and seventyfive fish (108±0.63 g) were divided into five feeding groups. the control group (c) was fed to satiation three times a day during the experiment. the four groups were starved for 1 (w1), 2 (w2), 3 (w3), and 4 (w4) weeks respectively, and then fed to satiation during a 4 week re-feeding period.the results indicated that some parameters including final weight, specific growth rate, body weight increase, plasma enzymes (alt, alanine aminotransferase, ast, aspartat aminotransferase and alp, alkaline phosphatase(, hematological parameters [mean corpuscular volume (mcv), mean corpuscular hemoglobin concentration (mchc), and mean corpuscular hemoglobin (mch)]were significantly affected by feeding regimes. the plasma cortisol, hematocrit, lymphocytes, neutrophils, eosinophils, and monocytes were not affected by starvation and subsequent re-feeding. these findings showed that short term starvations had no significant negative effects on growth performance, most biochemical and hematological parameters in persian sturgeon couldrecover when re-feeding resumed.