Total lactic bacteria in the shrimp digestive tract was higher after day 20 in the probiotic-supplemented
group. Ten hours after V. harveyi challenge, survival of the probiotic-supplemented group (65.7±2.9%) was
higher (P>0.05) than the control group (39.9±4.4%). Bacterial counts in hemolymph and hepatopancreas was
lower (P0.05) in the probiotic-supplemented group
after challenge with V. harveyi. Probiotic-supplemented diet modifies shrimp digestive tract bacterial
microbiota, increasing resistance to V. harveyi infection.