Abstract
Deep litter has been shown to decrease stereotypic wire-gnawing in male golden hamsters, suggesting that increased litter depth may be associated with decreased chronic stress levels. To determine the relationship between litter depth and stress levels in hamsters, the authors measured serum levels of corticosterone, cortisol, and ACTH in male golden hamsters kept in cages with three different depths of litter. The duration of handling the hamsters significantly increased the concentrations of corticosterone, cortisol, and the ratio of cortisol/corticosterone. It took longer to catch hamsters housed in cages with deep litter and the ACTH levels were higher in these hamsters. The positive effect of the enrichment (deep litter) was diminished by methodological problems during handling/anesthesia.
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Acknowledgements
Comments of Edna Hillmann and Daniel Boesch on an earlier version greatly improved the manuscript. This project was supported by the Swiss Federal Veterinary Office (No. 973.254. 2.01.02). The results are based on the dissertation “The Influence of Bedding Depth on Behavior in Golden Hamsters (Mesocricetus auratus)” by A.H., Vetsuisse Faculty Bern, Switzerland, 2005.
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Gebhardt-Henrich, S., Fischer, K., Hauzenberger, A. et al. The duration of capture and restraint during anesthesia and euthanasia influences glucocorticoid levels in male golden hamsters. Lab Anim 36, 41–46 (2007). https://doi.org/10.1038/laban0407-41
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DOI: https://doi.org/10.1038/laban0407-41
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