Effect of garlic powder (Allium sativum) on immune responses of Litopenaeus vannamei (Boone, 1931)

In the present study, the effect of different percentages of garlic powder on the immune response of white shrimp (Litopenaeus vannamei) was evaluated for 60 days. In this study shrimp were used with an average weight of 8-9 g were comprised of four treatments each with three replications such as 0, 0.5, 1 and 2 % of garlic powder added to feed. The results showed that total haemocyte count (THC) and total plasma protein (TPP) in shrimp fed diets containing 2 % garlic powder significantly increased than to shrimp fed diets containing 1, 0.5 and 0 % of garlic powder (P <0.05), whereas the shrimp of control, was significantly lower than experimental treatments (P <0.05). So it can be concluded that immune system non-specific of L.vannamei was activated and immune factors (THC and TPP) were increased after using garlic powder at 2 % in the diet of shrimp.