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

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StatisticsAnalyses were done using NCSS ® and SAS ® . Data and residuals were checked fornormality and transformed if necessary, or non-parametric tests were used (see text).All correlation coefficients are Spearman’s (r s ). The influences of the duration ofhandling the hamsters before euthanasia were analyzed by stepwise regressions.Post-hoc multiple comparisons were done using the Tukey-Cramer method (NCSS ® ).37
ResultsMales had generally higher values of the measured hormones (Tab. 1). None of thetreatment effects (cage size or depth of bedding) influenced the concentration ofglucocorticoids although significant differences in behaviour and relative weights oforgans were detected (Fischer et al., in preparation, Hauzenberger et al., inpreparation).Tab. 1 Hormonal measurements of male and female golden hamsters. The means are given with thestandard deviations in parentheses.hormone males N = 44 females N = 57corticosterone [ng/ml] 32.228 (±18.129) 7.338 (±4.583)cortisol [ng/ml] 18.340 (±28.141) 8.329 (±6.544)cortisol/corticosterone 0.511 (±0.515) 1.531 (±1.698)ACTH [pg/ml] 39.512 (±36.514) 12.714 (±13.520)HormonesCorticosteroneIn males, which were held in three different depths of bedding, corticosterone levelsdiffered significantly between series (Kruskal Wallis: χ 2 = 9.411, P = 0.009). Nine outof 45 values were above a level of 50 ng/ml. All but one high value derived fromseries 1. Corticosterone was significantly correlated with the duration of catching (r s =0.314, P = 0.040), duration of anaesthesia (r s = 0.367, P = 0.016) and total durationuntil blood samples were taken (r s = 0.382, P = 0.012). In a stepwise regression log-38
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 and 36: 3 CAN WE TELL HAMSTERS ARE STRESSED
Page 37 and 38: IntroductionConcentrations of gluco
Page 39: The experiments were approved by th
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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