Isolation and Characterization of Soil Probiotic Bacteria in Cauvery River Basin and their Application in Aquaculture

Research on probiotics for aquatic animals is growing along with the demand for environmentally friendly aquaculture. Probiotics have been defined as live microbial supplements that improve the health of humans and terrestrial animals [1]. The micro biota in the digestive tract of fish and crustaceans is particularly dependent on the external environment due to the flow of water through the digestive tract. The need to increase disease resistance, growth of aquatic organisms and feed efficiency has led to the use of probiotics in aquaculture. In recent years, the use of probiotics in aquaculture has begun to increase [2]. There is documented evidence that probiotics can improve nutrient digestibility, increase stress tolerance and promote reproduction. Unlike previous publications, this study focuses on the role of soil probiotic bacteria isolated from the Cauvery basin in Tiruchirapalli district. Isolated microorganisms - Nitrosococcus and Neisseria were tested for their special role in aquaculture, mainly in tilapia fish (Oreochromis sp.). This study also improves the bioremediation capacity of the isolated soil bacteria, which was demonstrated by testing the water quality parameters of the probiotic used. water environment Fish growth and mortality were also measured. It was clearly observed that the use of an isolated soil probiotic from a cave river basin promoted the longevity of tilapia fish. Thus, the cultivation and use of soil probiotic bacteria in aquaculture is a promising approach in modern science.