Evaluation of probiotic bacteria Leucosnostoc mensenteroides against White Gut Disease in shrimp aquaculture

With increasing demand for environment friendly aquaculture, use of beneficial bacteria to displace pathogens by competitive processes is being used in the animal industry as a better remedy and is now gaining acceptance for pathogen control in aquaculture. With this concern, the present study was designed for isolation of suitable probiotic bacteria from natural sources, application in an effective dose in the rearing environment is expected to control the blowout of White Gut Disease in aquaculture systems. The interaction of pathogenic Vibrio anguillarum and the inner surface of the digestive tract of P. monodon, with a specific focus on their in-situ morphology, aggregation and attachment characteristics presented with pathogenic bacterial species and under the control of probiotic bacteria were analyzed through. The percentage of granular cells of treated group was higher than the control. Histological studies revealed that the treated group has optimistic effect which helps in the reduction of tissue damage and decrease the mortality rate than the infected shrimps. Leuconostoc sp., can survive in the saline condition rather than other Lactobacillus sp., and its tolerance of acidic environment of the shrimp intestine and their adherence level at the intestine will progressively replace the V. anguillarum from the infected shrimps and commendably control the White Gut Disease.