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major aquaculture feed products. It is notable that many probiotics taken orally can be destroyed by the acidic conditions of the stomach and various approaches including microencapsulation are being developed to address this problem. In addition to this use in terrestrial animals, in aquaculture, the use of probiotics has also been investigated as water quality treatment, and essentially, improvement of bio ltration abilities of the various bacterial strains has been reported (Table 2.).
An Urban Experience
However, there is only preliminary evidence for most probiotic health claims. Even for the most studied strains, few have been suf ciently developed in basic and clinical research to warrant approval for health claim status
by a regulatory agency such as the Food and Drug Administration or European Food Safety Authority and no such claims had been approved by those two agencies.
Table 2. Uses of probiotics in an aquaculture system (adapted from Cruz et al.).

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