2.5. Statistical analysis
Data from the aquaria trial were analyzed by a covariance analysis with initial weight as
a covariant and dietary treatment as class variable. Data from the pen trial were analyzed
by a one-way ANOVA. Treatment means (from replicates) were compared by the LSD test
with 95% confidence intervals. The statistical analysis was done using the software
STATGRAPHICS PLUS STATISTICAL GRAPHICS SYSTEM 7.1 (Manugistics and
Statistical Graphics, 1993).