The effects of dietary Bacillus subtilis on immune response, hematological parameters, growth performance, and resistance of juvenile olive flounder (Paralichthys olivaceus) against Streptococcus iniae

We investigated the effects of different levels of dietary Bacillus subtilis ( BS ) on innate immunity, growth performance, feed utilization, and disease resistance of juvenile olive flounder. A control diet was formulated without probiotic, and three other diets were prepared adding different doses (1 × 10 7 , 3 × 10 7 , and 5 × 10 7 CFU/g feed) of BS (designated as Control, BS 1, BS 3, and BS 5, respectively). Triplicate groups of fish...