How to evaluate body conditions of red deer (Cervus elaphus) in an alpine environment?

Abstract

The aim of this investigation was to compare different indices for evaluating nutritional conditions of red deer (Cervus elaphus) in an alpine environment during the autumn in order to detect the most convenient ones for management purposes in our specific situation. Body conditions of 274 red deer were evaluated using kidney fat index, back fat index and body condition scores. Body Condition Scores was the easiest but the least reliable method. Both kidney fat index and back fat index were significantly affected by age and sex class (always lower in younger animals) and, in females, also by lactation status. In stags, a negative regression effect of culling date on both kidney fat index and back fat index was observed. A significant positive correlation between kidney fat index and back fat index was recorded. Both kidney fat index and back fat index were objective indicators of nutritional status and sensitive to changes in physical conditions, but back fat index was both quicker and easier to be measured. As a direct implication, we suggest that back fat index can be a practical and reliable indicator for monitoring red deer conditions in alpine areas during the autumn, provided that the effects of sex, age and date of culling are taken into account.

Keywords

• Kidney fat index, Back fat, Body condition score, Physical conditions, Ungulate management.