IBM SPSS, Version 20 forWindows (IBM SPSS Inc., Chicago, IL, USA)
was used for all statistical analyses. Homogeneity of variances and normality
among mean values were assessed using Levene's test for equality
of variance errors and the standardised residuals against the
predicted mean plot, respectively. All percentage data was arcsine
transformed before analyses. All variables were analysed using twofactor
ANOVA, with water temperature as the first factor and dietary
protein level as the second factor. When significant interactions were
observed, post-hoc tests were used to detect significant differences
between all treatment combinations (Student Newman–Keuls). Linear
and second order polynomial regression analyses were also applied to
SGR, feed consumption rate (mg individual−1 day−1) andFCR. A significance
level of P b 0.05 was used for all statistical tests. All values are
presented as means ± standard error (SE) of the mean unless otherwise
stated.
IBM SPSS, Version 20 forWindows (IBM SPSS Inc., Chicago, IL, USA)was used for all statistical analyses. Homogeneity of variances and normalityamong mean values were assessed using Levene's test for equalityof variance errors and the standardised residuals against thepredicted mean plot, respectively. All percentage data was arcsinetransformed before analyses. All variables were analysed using twofactorANOVA, with water temperature as the first factor and dietaryprotein level as the second factor. When significant interactions wereobserved, post-hoc tests were used to detect significant differencesbetween all treatment combinations (Student Newman–Keuls). Linearand second order polynomial regression analyses were also applied toSGR, feed consumption rate (mg individual−1 day−1) andFCR. A significancelevel of P b 0.05 was used for all statistical tests. All values arepresented as means ± standard error (SE) of the mean unless otherwisestated.
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