Behaviour of golden hamsters (Mesocricetus auratus) - Vetsuisse ...
Behaviour of golden hamsters (Mesocricetus auratus) - Vetsuisse ... Behaviour of golden hamsters (Mesocricetus auratus) - Vetsuisse ...
AbstractThe serum levels of corticosterone, cortisol, and ACTH were measured in male andfemale golden hamsters under different housing conditions. In males, the duration ofhandling until blood was taken (4.6 min. on average) significantly influenced theconcentrations of corticosterone, cortisol, and the ratio of cortisol/corticosterone.Handling times for females were only 2.3 minutes on average and no time effectswere found. However, significant effects of series were detected in both sexes. Nosignificant differences in the hormone levels were found due to housing treatments.Values of these hormones in the literature reveal large variation in this species. Dueto the sensitivity of hormonal measurements to (sometimes unknown andunavoidable) environmental factors interpretations of the stress levels of goldenhamsters based on these hormones must be made with caution.Keywords: cortisol, corticosterone, ACTH, stress, golden hamster33
IntroductionConcentrations of glucocorticoids are commonly used to infer the stress condition invarious species (see review by Buchanan, 2000). Unfortunately, poor repeatabilitiesof the measured values and contradictory results of several studies have raisedcontroversies about the value and applicability of the measurements of thesehormones (Rushen, 1991; Sandoe and Simonsen, 1992; Mason and Mendl, 1993).Several problems probably contribute to the difficulties of interpreting hormonalmeasurements in regard to stress and these have been sufficiently discussedelsewhere (Rushen, 1991; Buchanan and Goldsmith, 2004). In this note we want toreport experimental influences on hormonal measurements in golden hamsters inreference to published results on these species and to discuss the difficulties ofmeasuring the stress condition in male and female golden hamsters.34
- Page 1 and 2: Institut für Genetik, Ernährung u
- Page 3 and 4: Table of contentPage1 Zusammenfassu
- Page 5 and 6: eingerichtet. Die Laufradaktivität
- Page 7 and 8: 2 Behaviour of golden hamsters (Mes
- Page 9 and 10: IntroductionHamsters are common lab
- Page 11 and 12: MethodsAnimals and housing conditio
- Page 13 and 14: weaningvideorecordingvideorecording
- Page 15 and 16: ResultsBehaviourHamsters devoted mo
- Page 17 and 18: Tab. 2 Post-hoc comparisons of runn
- Page 19 and 20: GroomingAll hamsters were observed
- Page 21 and 22: Open spaceUsage of open space was p
- Page 23 and 24: Stress hormones and organsNeither s
- Page 25 and 26: directed exploration, which, after
- Page 27 and 28: top wire. Some hamsters used to cli
- Page 29 and 30: Autopsies of the three hamsters tha
- Page 31 and 32: ReferencesBantin G.C. and Sanders P
- Page 33 and 34: Sherwin C.M., 1998. Voluntary wheel
- Page 35: 3 CAN WE TELL HAMSTERS ARE STRESSED
- Page 39 and 40: The experiments were approved by th
- Page 41 and 42: ResultsMales had generally higher v
- Page 43 and 44: Fig. 1 The concentration of cortiso
- Page 45 and 46: ACTHLevels of ACTH were significant
- Page 47 and 48: ACTH-Challenge TestIn the ACTH-chal
- Page 49 and 50: negative feedback of cortisol: incr
- Page 51 and 52: ConclusionsSince the stress respons
- Page 53 and 54: Kuhnen, G., Werner, R. 1998. Plasma
- Page 55 and 56: 4 AppendixApp. I Cage size 1 (right
- Page 57 and 58: App. IV Behaviour catalogue. Descri
- Page 59: 5 DanksagungenIch möchte allen dan
IntroductionConcentrations <strong>of</strong> glucocorticoids are commonly used to infer the stress condition invarious species (see review by Buchanan, 2000). Unfortunately, poor repeatabilities<strong>of</strong> the measured values and contradictory results <strong>of</strong> several studies have raisedcontroversies about the value and applicability <strong>of</strong> the measurements <strong>of</strong> thesehormones (Rushen, 1991; Sandoe and Simonsen, 1992; Mason and Mendl, 1993).Several problems probably contribute to the difficulties <strong>of</strong> interpreting hormonalmeasurements in regard to stress and these have been sufficiently discussedelsewhere (Rushen, 1991; Buchanan and Goldsmith, 2004). In this note we want toreport experimental influences on hormonal measurements in <strong>golden</strong> <strong>hamsters</strong> inreference to published results on these species and to discuss the difficulties <strong>of</strong>measuring the stress condition in male and female <strong>golden</strong> <strong>hamsters</strong>.34
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