Behaviour of golden hamsters (Mesocricetus auratus) - Vetsuisse ...

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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

Behaviour of golden hamsters (Mesocricetus auratus) - Vetsuisse ...

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