5. Conclusion
The present study demonstrated that dietary supplementation of
multi-strain probiotics can improve both survival and growth of Rohu
at hatchling stages i.e. during the first month of rearing. Their positive
effects on the growth still continue to the fry stage (up to 60 days)
without affecting the survival. These positive effects on growth and
survival do not sustain at later stages of development especially after
about 2 months. Therefore, dietary supplementation of the multi-
strain probiotics together with amylase and phytase enzymes and sea-
weed used for this experiment can be recommended to improve surviv-
al and growth of Rohu hatchlings and fry for nursing in outdoor hapas
up to two months. Further pilot studies are needed to see the effects
of varying doses of these probiotics, as well as combination of other
probiotics.