abstract evaluation of probiotic is not summarized on growth but included the other aspects, such as blood parameters. in this study, effects of two bifidobacter, bifidobacterium animalis and bifidobacterium lactis with three concentrations of 1× 109 (t1), 2× 109 (t2) and 3× 109 (t2) cfu/100g were studied on growth performance and hematological parameters of rainbow trout larvae with initial bo...