FIGURE 2.
Bicarbonate concentration (HCO3) in immobilised white rhinoceroses.
Note: Mean and s.d. of bicarbonate concentration of field-immobilised rhinoceroses given intravenous butorphanol + oxygen insufflation (but + O2 field, n = 14), boma-immobilised rhinoceroses given intravenous butorphanol + oxygen insufflation (but + O2 boma, n = 8) and boma-immobilised rhinoceroses given intravenous sterile water (control, n = 8). The black arrow indicates the time at which butorphanol or sterile water was administered and oxygen insufflation initiated. The brackets indicate the time points at which the butorphanol + oxygen field trial differed from the control (a) or the field trial differed from the butorphanol + oxygen boma trial (b). The shaded area represents the range of normal values in standing, unrestrained white rhinoceroses (Citino & Bush 2007).