J. SUDHA PRISCILLA AND C.D. LETHI
Abstract
The pipe' deals with the bacterial profile of the medium and the growth and survival rates of the Indian major carp Cirthina inrigala, when reared in a medium containing, probiotic epicin. The fish were reared in two different concentrations of epicin (5 mg/ml 10 mg/m1) in three stocking densities. Samples from the media were plated to study the bacterial profile on 0 and 28'" days. The grcwth rate and survival rate of the fish were also studied for 28 days. The epicin containing medium showed the growth of white punctiform bacterial colonies whereas control system harboured different types of bacterial colonies. The percentage survival of the fish was more in the treated systems. The fish reared in the control systems were infected with white spot disease. There was no incidence of disease in the treated systems. A study of the bacterial profile, 28 days after the termination of the experiment revealed the fact that the white punctiforrn colonies of the treated tanks were slowly replaced by rounded, irregular and filamentous ones.