In the aquaria trial, final body weight, growth rate and PER decreased with increasing
dietary CoP levels from 0 to 390 g kg 1 (P < 0.05). The FCR was significantly higher
only at 390 g kg 1 of dietary CoP (Table 3). The high survival rate (above 92%) found
with CoP diets suggests that O. aureus fingerlings can tolerate relatively high levels of
CoP substances (caffeine, polyphenols, tannins and high potassium levels), which are