high specific growth rate (SGR). High protein
efficiency ratio (PER) as well as greater protein
values of carcass in probiotic treatments may be
due to proteins secreted by members of genus Bacillus
[14].
We found that supplementation of trout starter diet
with the proper density of commercial BioPlus 2B
probiotic could be beneficial for growth and survival of
Zebra fish, especially in fast growing conditions, where it
would be essential to stimulate the precocious maturation
of digestive system [16]. No clear negative effect of
probiotic on Zebra fish was detected. So we suggest the
effects of BioPlus 2B probiotic to be tested in other
locations.