Figure 7

Gamblegram at 3 dpi. Calves were either challenged with 10⁸ inclusion forming units of C. psittaci or sham inoculated (controls). The thickness of the arrow indicates the strengths of the influence. Na⁺ decreased remarkably (8 mmol/L) 3 dpi in C. psittaci infected calves, therefore HCO₃^– decreased; but Cl^- decreased clearly (6 mmol/L) too, therefore HCO₃^– should increase. Both influences together Na⁺ and Cl^- lead to a minimal decrease of HCO₃^–. Similar reaction were seen in SID and A_tot, both decreased (SID = acidotic, A_tot = alkalotic), that is why no change occurred in venous pH.