The Use Of B-Glucan As An Immunostimulant To Increase The Non-Specific Iivimunity And The Performance Of Shrimp (Penaeus Monodon, Fab.) Under Artificial Stress Condition

Abstract

Environmental stress has been a colnmon risk in shrimp culture ponds. This stress could lead to the occurrence of diseases. The experiment was divided into three trials. The objective of the first trial was to investigate the effect of oxygen concentration. water salinity, and luniinous bacteria concentration on some parameters of stress condition i.e. hemocyte count, survival rate, and number of luminous bacteria (Kbrio splendidus biovar 1 ) in hemolymph. The result of this trial could be used as a fit stressor in an advanced trial. The second trial was to investigate the effect of P-glucan on some parameters of shrimp performance i.e. growth and feed conversion ratio. The third trial had an objective to study the affectivity of (3-glucan given in 1 and 2 months on some parameters of shrimp immune system i.e. hemocyte count. phagocytic activity, clearance bacteria, and survival rate at low oxygen concentration. The experiment was an advanced experiment using the worst condition resulted by trial 1.