Effect of probiotics on immunological status of giant freshwater prawn (macrobrachium rosenbergii de Man)

The present study was aimed to investigate hemocyte count in giant freshwater prawn (Macrobrachium rosenbergii de Man) after being fed with different supplements. Immunological status of an animal is reflected with the result of its hematological profile. Freshwater prawns are more prone to infections by several pathogens which influence the immunity of the affected individuals. The effect of two probiotics on hemocyte count was studied over a period of eight weeks. The level of hemocyte count decreased significantly in the blood of prawns administered with pathogenic organisms died after three weeks. The level of count of hemocyte showed significant increase in the blood of giant freshwater prawn treated with probiotics alone verses control and also in prawn administered with pathogenic organisms verses probiotics revealed that probiotic 1 was more effective than probiotic 2.