Manipulation of microbiota using probiotics have been reported
as a worthy practice for aquaculture in order to control or inhibit
the pathogen bacteria, improve the growth performances and
digestive enzymes, and enhance the immune responses of the host
against pathogens or physical stress [3,8,29]. We have recently re-
ported the identification, characterization and safety of B. subtilis
strains L10 and G1 as potential probiotics for shrimp culture [20].In
this study we determined the growth performance and digestive
enzyme activity of shrimp fed diets containing B. subtilis strains, L10
and G1, at two different doses of 105
(BM5) and 108
(BM8) CFU g1
feed. Survival and immune status of treated shrimp have also been
investigated through an experimental infection with V. harveyi.