Rodent

Effects of gender and social isolation on electroencephalogram and neuroendocrine parameters in rats

Same-sex pairs were established and partners separated after 6 weeks. The effects of 6 weeks of [subsequent] social isolation on electroencephalographic (EEG) recordings and hypothalamic-pituitary-adrenal (HPA) functioning were studied. Separation resulted in significant sleep disturbances - as measured in EEG...

Year Published: 1993Animal Type: Rat, Rodent

Citation: Ehlers, C. L., Kaneko, W. M., Owens, M. J. et al. 1993. Effects of gender and social isolation on electroencephalogram and neuroendocrine parameters in rats. Biological Psychiatry 33, 358-366.

Use of telemetry to record electrocardiogram and heart rate in freely moving mice

Applications and evalutation of radio-telemetry in the mouse are described.

Year Published: 1993Animal Type: Mouse, Rodent

Citation: Kramer, K., van Acker, S. A. B. E., Voss, H.-P. et al. 1993. Use of telemetry to record electrocardiogram and heart rate in freely moving mice. Journal of Pharmacological and Toxicological Methods 30, 209-215.

Evaluation of inanimate objects on commonly monitored variables in preclinical safety studies for mice and rats

None of the inanimate objects [gauze pads] had an adverse effect on commonly tested variables monitored in preclinical safety studies.

Year Published: 1993Animal Type: Mouse, Rat, Rodent

Citation: Watson, D. S. B. 1993. Evaluation of inanimate objects on commonly monitored variables in preclinical safety studies for mice and rats. Laboratory Animal Science 43, 378-380.

Whisker trimming behaviour in A2G mice is not prevented by offering means of withdrawal from it

It was suggested that barbering may be a form of coping with inappropriate housing.

Year Published: 1993Animal Type: Mouse, Rodent

Citation: Van den Broek, F. A. R., Omtzigt, C. M., Beynen, A. C. 1993. Whisker trimming behaviour in A2G mice is not prevented by offering means of withdrawal from it. Laboratory Animals 27, 270-272.

Sound levels in rooms housing laboratory animals: An uncontrolled daily variable

It is clear that the acoustic environment of laboratory animals is a daily variable that is usually uncontrolled and that may have important implications for behavioural and physiological experiments and for animal welfare.

Year Published: 1993Animal Type: All/General, Mouse, Rabbit, Rat, Rodent

Citation: Milligan, S. R., Sales, G. D., Khirnykh, K. 1993. Sound levels in rooms housing laboratory animals: An uncontrolled daily variable. Physiology and Behavior 53, 1067-1076.

Environmental enrichment and aggressive behaviour: Influence on body weight and body fat in male inbred HLG mice

The provision of a horizontal labyrinth consisting of vertical dividers with only a few openings enhanced territorial tendencies in groups of male mice leading to increased aggression.

Year Published: 1994Animal Type: Mouse, Rodent

Citation: Bergmann, P., Militzere, K., B?ttner, D. 1994/95. Environmental enrichment and aggressive behaviour: Influence on body weight and body fat in male inbred HLG mice. Journal of Experimental Animal Science 37, 69-78.

Husbandry and welfare of laboratory rodents and rabbits: the relevance of behavioural studies

A general discussion on the behavior of rodents and rabbits.

Year Published: 1994Animal Type: Rabbit, Rodent

Citation: Baumans, V. 1994. Husbandry and welfare of laboratory rodents and rabbits: the relevance of behavioural studies. In: Proceedings of the Federation of European Laboratory Animal Science Associations [FELASA] Symposium. Bunyan, J. (ed), 65-67. Royal Society of Medicine Press, London, UK.

The rest/activity rhythm of the laboratory rat housed under different systems

The mean activity during the hours of darkness for all housing situations was in the region of 50%, while during the day this was reduced to between 14-19%. No matter what housing system [single versus double commune box] and enrichment...

Year Published: 1994Animal Type: Rat, Rodent

Citation: Batchelor, G. R. 1994. The rest/activity rhythm of the laboratory rat housed under different systems. Animal Technology 45, 181-187.

The antinociceptive effect of non-noxious sensory stimulation is mediated partly through oxytocinergic mechanisms

The release of opiate peptides is stimulated by oxytocin neurotransmission. Oxytocin treament has an anti-stress and analgetic effect.

Year Published: 1993Animal Type: Rat, Rodent

Citation: Uvnas-Moberg, K., Bruzelius, G., Alster, P. et al. 1993. The antinociceptive effect of non-noxious sensory stimulation is mediated partly through oxytocinergic mechanisms. Acta Physiologica Scandinavica 149, 199-204.

Effects of environmental enrichment on aggressive behavior, dominance hierarchies, and endocrine status in male DBA/2J mice

The provision of a horizontal labyrinth consisting of vertical dividers with only a few openings enhanced territorial tendencies in groups of male mice, leading to increased aggression. Findings suggest that keeping adult male mice in structured cages can result in...

Year Published: 1994Topics: Environmental EnrichmentAnimal Type: Mouse, Rodent

Citation: Haemisch, A., Voss, T., Gartner, K. 1994. Effects of environmental enrichment on aggressive behavior, dominance hierarchies, and endocrine status in male DBA/2J mice. Physiology and Behavior 56, 1041-1048.