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Fig. 6. Fluxes of titratable alkalinity (JTAlk, grey bars),
total ammonia (JTamm, white bars) and net acidic
equivalents (JnetH+ black bars) over a 72 h
period after fish fed voluntarily on a 1% of body mass ration. Positive values
indicate base excretion and negative values indicate acid excretion. Values
are means ± s.e.m. (N=8). An asterisk denotes a significant
difference when compared with pre-feed levels (adjusted P<0.05;
RM-ANOVA followed by a multiple pairwise control (pre-feed) comparisons
versus post-feed groups using the Bonferroni t-test method),
whereas a dagger indicates a significant difference of
JTAlk and JTamm when compared
with voluntarily fed fish (P<0.05; paired t-test).