Fig. 5. Dietary acidification increases phosphorus digestibility (A) but decreases
H+/K+-ATPase mRNA expression (B) in rainbow trout. Each
dot represents the mean (± s.e.m.) of six fish for phosphorus
digestibility measurements, and four fish for
H+/K+-ATPase mRNA measurements. Legend shows dietary
treatments (acids used). Significance of dietary acidification on phosphorus
digestibility (P<0.0001) and H+/K+-ATPase
mRNA expression (P<0.0001) was evaluated by linear regression.