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1 December 2016 Stress Steroid Levels and the Short-Term Impact of Routine Dehorning in Female Southern White Rhinoceroses (Ceratotherium simum simum)
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Abstract
Rhinoceros populations in Africa are under severe threat as a result of surging poaching rates and risk-mitigation strategies are continuously adapted in an attempt to ensure the survival of the species. This study compared faecal glucocorticoid metabolite (fGCM) levels of two age classes of limited free-ranging female white rhinos with fGCM levels of adult free-ranging female white rhinos. Subsequently, fGCM alterations in the limited free-ranging animals were monitored following routine dehorning as a measure of the animals' short-term physiological stress response. Baseline fGCM levels differed significantly between tested groups, with both free-ranging and limited free-ranging adult animals showing significantly higher fGCM levels compared with limited free-ranging juvenile females. In contrast, baseline fGCM levels did not differ significantly between limited free-ranging and free-ranging adult individuals. Routine dehorning procedures resulted in a short-term stress response expressed by a significant increase in fGCM levels 48 h post-dehorning, with stress steroid levels returning to pre-dehorning concentrations 72 h after the procedure.
© Zoological Society of Southern Africa
Marcha Badenhorst, Michelle Otto, Annemieke C van der Goot and André Ganswindt "Stress Steroid Levels and the Short-Term Impact of Routine Dehorning in Female Southern White Rhinoceroses (Ceratotherium simum simum)," African Zoology 51(4), (1 December 2016). https://doi.org/10.1080/15627020.2016.1261002
Received: 21 July 2016; Accepted: 1 November 2016; Published: 1 December 2016
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