Effect of Spriulina platensis powder on digestion and liver function index enzymes and biochemical parameters in Mugil cephalus Linnaeus, 1758

This experiment was conducted to evaluate the effect of Spirulina pletensis powder on the liver and digestive enzymes and biochemical parametese of Mugil cephalus for 60 days. The experiment was conducted in a completely randomized design with 450 of grey mullet larvae (with average weight of 0.72±0.02g) in 5 treatments and 3 replicates (n=30 in each replicate) and included: control group without using algae extract, an another groups (treatment 2, 3,4 and 4) the amounts of this extract were 5,10,15 and 30 g/kg food The results showed that at the end of experiment, although the highest the activity of protease and lipase enzymes, the lowest the activity of alanin aminotransferase (ALT) and alkaline phosphates (ALP) were observed in treatment containing 15g/kg spirulina algae powder, in all of these parameters, treatment 5 (20 g/kg) (4) showed a significant difference compared with control treatment (P<0.05), in ALT, amylase and lipase, there were no significant difference among treatment 4 and 5 (P>0.05). The lowest cholesterol, glucose and triglyceride, the highest globulin, albumon and total protein were recorded in treatment 4. Finally, the present results showed that use of the diet containing 115g/kg spirulina algae had positive effects on the activity of liver and digestive enzymes and blood biochemical parameters of grey mullet.