Serum mineral levels in study elk.

Serum mineral levels (μg/g) of captive study elk in control (blue) and treatment (yellow) groups were compared for A) selenium (Se), B) copper (Cu), and C) zinc (Zn) at 3 timepoints during the study: study initiation (dpi 0), monitoring period initiation (dpi 138), and the endpoint of each elk. Reference ranges (red) are based on values from cattle and deer [21, 37]. Statistical differences are indicated with *. (ZIP)