Mouse

More hippocampal neurons in adult mice living in an enriched environment

Mice reared in an environment enriched with running wheels, tunnels and toys possess more hippocampal neurons than litter mates reared in barren standard cages. It is likely that these extra neurons contribute to the enhanced performance in learning tasks showed...

Year Published: 1997Animal Type: Mouse, Rodent

Citation: Kempermann, G., Kuh, H. G., Gage, F. H. 1997. More hippocampal neurons in adult mice living in an enriched environment. Nature 386, 493-495.

Evaluation of objects for environmental enrichment of mice

Single-cage mice spent 3.58 min interacting with the marble, 50,16 min interacting with the tunnel, and 271.00 min interacting with the nestlet. Control animals spent a mean of 35 min digging in bedding, suggesting that bedding served as an important...

Year Published: 1997Topics: Environmental EnrichmentAnimal Type: Mouse, Rodent

Citation: Hobbs, A., Kozubal, W., Nebiar, F. F. 1997. Evaluation of objects for environmental enrichment of mice. Contemporary Topics in Laboratory Animal Science 36(3), 69-71.

Effects of cage enrichment on territorial aggression and stress physiology in male laboratory mice

Findings suggest that keeping adult male mice in structured cages can result in increased aggression towards intruders, a change in the social organization, and altered endocrine states.

Year Published: 1997Topics: Environmental EnrichmentAnimal Type: Mouse, Rodent

Citation: Haemisch, A., Gartner, K. 1997. Effects of cage enrichment on territorial aggression and stress physiology in male laboratory mice. Acta Physiologica Scandinavica 161(Suppl. 640), 73-76.

Age and weight at weaning affect corticosterone level and development of stereotypies in ICR-mice

Artificial weaning in laboratory mice elicits increased levels of exploratory and escape behaviour. Under barren housing conditions patterns of exploration and escape subsequently develop into stereotypic behaviour. .. Both plasma corticosterone levels 48 h after weaning and adult stereotypy levels...

Year Published: 1997Animal Type: Mouse, Rodent

Citation: Wurbel, H., Stauffacher, M. 1997. Age and weight at weaning affect corticosterone level and development of stereotypies in ICR-mice. Animal Behaviour 53, 891-900.

Preferences for nesting material as environmental enrichment for laboratory mice

All [group-housed] mice showed a clear preference for cages with [paper] tissues or [paper] towels as compared to paper strips or no nesting material, and for cages with cotton string or wood-wool as compared to wood shavings or no nesting...

Year Published: 1997Animal Type: Mouse, Rodent

Citation: Van de Weerd, H. A., van Loo, P. L. P., van Zutphen, L. F. M. et al. 1997. Preferences for nesting material as environmental enrichment for laboratory mice. Laboratory Animals 31, 133-143.

Nesting material as environmental enrichment has no adverse effects on behavior and physiology of laboratory mice

Inanimate enrichment did not affect physiological data but prompted an increase in the animals' body weights.

Year Published: 1997Topics: Environmental EnrichmentAnimal Type: Mouse, Rodent

Citation: Van de Weerd, H. A., van Loo, P. L. P., van Zutphen, L. F. M. et al. 1997. Nesting material as environmental enrichment has no adverse effects on behavior and physiology of laboratory mice. Physiology and Behavior 62, 1019-1028.

Behavioural demand functions of caged laboratory mice for additional space

Mice demonstrate a strong motivation to gain access to space additional to that provided by a standard laboratory cage, even when this provides no further resources or enrichment. The importance of a commodity, as perceived by animals, can be determined...

Year Published: 1997Topics: HousingAnimal Type: Mouse, Rodent

Citation: Sherwin, C. M., Nicol, C. J. 1997. Behavioural demand functions of caged laboratory mice for additional space. Animal Behaviour 53, 67-74.

The effects of environmental enrichment on cage-cleaning aggression in male laboratory mice

Inanimate enrichment may decrease the incidence of aggressive interactions between males after cage cleaning.

Year Published: 1997Topics: Environmental EnrichmentAnimal Type: Mouse, Rodent

Citation: Ambrose, N., Morton, D. B. 1997. The effects of environmental enrichment on cage-cleaning aggression in male laboratory mice. B & K Science Now 6, 13.

Choice tests with groups of mice: nest box, nesting material and tubes as enrichment items for laboratory mice

Mice show a preference for a more complex housing environment offering shelter. In accordance with results from preference tests with individually housed mice, present results support the view that nesting material, shelter, social contact and adequate space are important environmental...

Year Published: 1998Topics: Environmental EnrichmentAnimal Type: Mouse, Rodent

Citation: Heinzmann, V., Jonas, I., Hirschenauer, K. et al. 1998. Choice tests with groups of mice: nest box, nesting material and tubes as enrichment items for laboratory mice. Journal of Experimental Animal Science 39, 43-60.

Floor space needs for laboratory mice: C57BL/6 males in solid-bottom cages with bedding

Different floor space allocations of cages that were barren except bedding were tested in groups of 3 male mice. Space reduction - from 129 to 32 square cm per mouse - had no impact on body weight gain; but with...

Year Published: 1998Topics: Housing, Stocking DensityAnimal Type: Mouse, Rodent

Citation: Fullwood, S., Hicks, T. A., Brown, J. C. et al. 1998. Floor space needs for laboratory mice: C57BL/6 males in solid-bottom cages with bedding. ILAR Journal 39(1), 29-36.