Effects of starvation and re-feeding on some hematological and plasma biochemical parameters of juvenile Persian sturgeon ,Acipenser persicus Borodin, ۱۸۹۷

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 (۱۰۸±۰.۶۳ 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 ۱ (W۱), ۲ (W۲), ۳ (W۳), and ۴ (W۴) weeks respectively, and then fed to satiation during a ۴ 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.

Keywords:

Acipenser persicus , Starvation , Physiology , Biochemistry , Hematology , Compensatory growth