Abstract
Glucose-6 Phosphatase activity was studied in the air breathing fresh water catfish (Clarias batrachus) by giving the probiotic feed. The experiment was conducted in laboratory condition with glass jar aquarium. Bacteriological and different biochemical tests like cytochrome oxidase, fermentative and catalase test were analysed along with certain physiological parameters of water samples. Clarias batrachus was fed by prepared four diets, F1, F2, F3 and F4. The diets were prepared using fishmeal, soyabean meal, groundnut oil cake, rice bran, vitamin mineral mixture and different concentration of probiotics. The Clarias batrachus in experimental treatments were fed by the prepared diets upto six weeks. The significant amount of Lactic acid bacteria (LAB) was found in the gut microflora of the experimental fish. Glucose 6- phophatase activity was decreased in liver with increase in probiotic concentration in feed. But the enzyme activity in kidney, gill and stomach did not follow any trend. The water quality parameters like pH, CO2, DO, alkalinity, ammonia concentrations of the experimental tanks were varied significantly with treatment time.
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