Behaviour of golden hamsters (Mesocricetus auratus) - Vetsuisse ...
Behaviour of golden hamsters (Mesocricetus auratus) - Vetsuisse ... Behaviour of golden hamsters (Mesocricetus auratus) - Vetsuisse ...
806040200in running-wheelopen spacewirefood bowlsand bathon houseon/beh wheel1,800 cm² 2,500 cm² 5,000 cm² 10,000 cm²Fig. 5 Total percent duration of presence in most frequently visited locations in the different cagesizes. All other locations were visited rarely.On houseMore hamsters were observed on top of the house in smallcages (χ 2 3 = 22.05, p < 0.0001, Tab. 3), but total percentduration as well as total frequency revealed no differencesamong cage sizes (P > 0.1)Tab. 3 Number of hamsters observed on top of the house (X 2 3 = 22.05, p < 0.0001).Cage size [cm 2 ] observed onhouse1,800142,500125,000510,0004Total35not observed onhouse12101124N151415155917
Open spaceUsage of open space was performed for longer time periods in big cages (F = 3.66, N= 59, P = 0.0187). There were no significant differences in the duration of usage ofother localities.Body weightAt week 0 body weights were similar in all four cage sizes (ANOVA, logtransformation:F = 2.65, N = 60, P = 0.143). The series had a significant influence onbody weight (P < 0.05) with the exception of week 8 (Fig. 6). Hamsters from largerlitters were significantly lighter throughout the experiment (Tab. 4). The effect ofweaning age was significant in the first three body weight measurements, but not inweek 13. Cage size never affected body weights significantly, but showed a tendencytowards higher weights in big cages in week 13. Weight gain from weaning until week13 was significantly smaller the bigger the cage (ANOVA: F = 4.03, N = 57, P =0.013) (Fig. 7). Series, age of weaning and litter size had no effect on weight gain.The body condition (body weight in week 13 / length 3 ), was not significantly differentbetween cage sizes (ANOVA: F = 1.93, N = 57, P = 0.1389). During autopsy, nodifference in the amount of fat was noticed.Tab. 4 ANOVAs of body weights at the 4 measured times with cage size and series as factors andlitter size and age at weaning as covariates. N = 60, week 13: N = 57. No significant interactionsoccurred.Project-week Litter size Weaning-age Cage size0F=6.59 P=0.0135 F=34.17 P0.5P>0.4P=0.074318
- 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: GroomingAll hamsters were observed
- 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 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
806040200in running-wheelopen spacewirefood bowlsand bathon houseon/beh wheel1,800 cm² 2,500 cm² 5,000 cm² 10,000 cm²Fig. 5 Total percent duration <strong>of</strong> presence in most frequently visited locations in the different cagesizes. All other locations were visited rarely.On houseMore <strong>hamsters</strong> were observed on top <strong>of</strong> the house in smallcages (χ 2 3 = 22.05, p < 0.0001, Tab. 3), but total percentduration as well as total frequency revealed no differencesamong cage sizes (P > 0.1)Tab. 3 Number <strong>of</strong> <strong>hamsters</strong> observed on top <strong>of</strong> the house (X 2 3 = 22.05, p < 0.0001).Cage size [cm 2 ] observed onhouse1,800142,500125,000510,0004Total35not observed onhouse12101124N151415155917
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