Toxic effects of cyanobacterial alga N. muscurum on some physiological parameters in blood of Ctenopharyngodon idella VaL.1844

Abstract EN

Study included feeding juvenile grass carp Ctenophartyngodon idella on toxic alga Nostoc muscurum as solitary and mixture feeding (toxic alga and clover) as compared with fed on clover only (control group) with three feeding periods (24 h, 15 days and 35 days) to evaluated toxic effects of these types of food on some blood parameters and activity of some liver enzymes in blood of C.

idella juvenile.

Study showed significant decreasing in mean of red blood corpuscles (RBCs), white blood corpuscles (WBCs), Haemoglobin (Hb), Packed cell volume (PCV) and total protein in blood plasma when C.

idella juvenile fed on toxic alga and fed on mixture feeding compared with control group with increasing food periods.

Also study showed highly significant increasing P < 0.05 in activity of some liver enzymes represented by alkaline phosphatase (ALP), alanine transaminase (ALT) and Aspartate transaminase (AST) in all feeding periods when C.

idella juvenile fed on toxic alga and mixture feeding compared with control group with notes reduction in survival percentage and means weight of juvenile after fed on toxic alga and mixture feeding.