Physiology and infection
The multiple status of infection of the individuals had a marginal
effect on the antioxidant capacity of plasma (F2,37 =
2.62; p = 0.09), although the plotted data (Fig. 2) suggested
that the infected single and multiple birds had very similar TAS values,
which together were significantly lower than the non-infected bird
values (difference between infected and non-infected individuals:estimate ± SE = 0.27 ± 0.12; F1,38 = 5.28;p = 0.03). We did not find any significant relationship between
residual mass or infection status and haemoglobin, triglycerides, uric
acid, plasma-MDA, RBC hormesis, or
RBC oxidative stress (Supporting
information).