بررسي اثر جلبك دونالي يلا (Dunaliella salina) بر تغييرات شاخص هاي ايمني (كمپلمان و پراكسيداز) در ماهي قزل آلاي رنگين كمان

Effects of Dunaliella microalgae (Dunaliella salina) on different immune indeses (complements c3 ,c4 and antioxidant capacity) in rainbow trout (Oncrohynchus my kiss)

Abstract Main purpose of this research was to study the effects of Dunaliella microalgae on physiological and antioxidant capacity of the rainbow trout. It was planned to measure the amount of complements c3 , c4 and peroxidase enzymes of the fish. Rainbow trouts were separated in five equal groups and were fed with diets containing 0., 5,7 ,9 and 11 grams of pure dried Dunaliella in each kilogram of food respectively.Blood samples were taken from 25 random collected fish, at the end of first and third months of culture and were send to the laboratory to measure complement and peroxidase factors.Results indicated that the amount of complements c3, c4 and peroxidase enzymes in the blood pelasma of those fish fed with Dunaliella aglae, With the increased of Dunliella in food, and increased weight, levels of c3 , c4 and peroxidase were also increased. Treatment 4 had highest effect on increasing weight of fish and was significantly different with other treatment.In term of fish length, the longest length was observed in treatment 4 , which had significant different with treatment l(p<0/05). The results indicated that Dunaliella aglae containing p- carotene,has favourable effects on the immune system of rainbow trout.Thus dunaliella algae can be used as a nutrient in rainbow trout diet improving fish weight and length gain while having physiological positive properties on the fish.