3.3. Probiotic viability
It was possible to recover the probiotic bacteria from the intestine
of fish fed the probiotic-supplemented diet. The counts of
the B. subtilis colonies were 4.12 103 and 2.84 103 CFU g1 in the
fish raised at the low and high stocking densities, respectively. B.
subtilis colonies were not observed in the anterior intestine of fish
fed the control diet.