Mineral and protein content of supplemental feed offered to Iberian red deer hinds at 1 kg individual−1 day−1, and mean mineral content in main chewed plant species present in the study area.

Table 1A shows the composition of the feed and vegetation, as well as their ratio. Table 1B shows overall mean diet composition in both supplemented and control groups, based on 1 kg of supplemental feed +1.5 kg of natural vegetation (i.e. 40–60% of diet) in the supplemented group vs. a 100% natural vegetation diet in the control group, as well as the intake ratio among groups.