The present invention relates to an aquaculture functional feedstuff additive comprising a Lactococcus lactis BFE920 strain that induces immunomodulatory T-cells and, more particularly, to an anti-inflammatory or immunopotentiating composition containing a Lactococcus lactis BFE920 strain as an effective ingredient and the use thereof. Having an anti-inflammatory or immunopotentiating effect, a composition including Lactococcus lactis BFE920 according to the present invention can be used as a feedstuff composition or additive capable of improving anti-inflammatory or immune activity in a subject.
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