Probiotics can enhance digestion through production of digestive enzymes. Better digestion leads to lower waste production and improve water quality. Artemia plays a major role in aquaculture as one of the most important live foods used in larval rearing. Artemia enhances growth and survival rate, stimulates the production of digestive enzymes and improves the pre-digestion of nutrients in fish larvae intestine. It seems it would be possible to stimulate the production of digestive enzymes in live foods using probiotics. The aim of this experiment was to study the effects of Bacillus subtilis and Bacillus licheniformis on digestive enzyme -protease, amylase and lipase- activities of Artemia urmiana.

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