Table 1 reveals that 0.02% Leiber® Beta-S improves body
weight gain and feed conversion of rainbow trout fingerlings
by 10% and 3.5%, respectively. The positive influence on the
mortality rate also confirms the improved health status of
the juvenile fish. In a further experiment (Figure 1) at the
later growth stage from 50 g body weight onwards the
efficacy of 0.02% and 0.05% Leiber® Beta-S could equally
be demonstrated when administered over a long period of
7 months.