appeared between the unshocked control rainbow
trout and triploids, and between rainbow trout and
shock-induced triploid hybrids (Table 4). The highest
growth rate was calculated as 3.60 in the triploid hybrid
groups between days 110 and 200. The lowest
growth rate was determined as 0.09 in unshocked
control Black sea trout groups between days 20 and
60. The highest mean CF of control and triploid hybrids
was found to be1.36 on day 60. This CF is lower
than the CF calculated in diploid rainbow trout and
triploid Black Sea trout groups (Table 4). Inthe following
periods, the CF of hybrids and their parental species
was reduced.