Rodent

Effect of access to a running wheel on behaviour of C57BL/6 mice

Male mice spend approximately 2 hours per 24-hour day running.

Year Published: 1999Animal Type: Mouse, Rodent

Citation: Harri, M., Lindblom, J., Malinen, H. et al. 1999. Effect of access to a running wheel on behaviour of C57BL/6 mice. Laboratory Animal Science 49, 401-405.

Impact of home cage alterations on aggression in mice

PVC straight pipes, plumbing elbows and T pipes, and shreddible nesting squares were evaluated. Nesting squares appear to be the most effective enrichment object for reducing the incidence of aggression in group-housed male mice.

Year Published: 1999Topics: Environmental EnrichmentAnimal Type: Mouse, Rodent

Citation: Gwinn, L. A., Krauthauser, C. L., Kerr, J. S. 1999. Impact of home cage alterations on aggression in mice. American Association for Laboratory Animal Science [AALAS] Meeting Official Program, 35 (Abstract).

Environmental enrichment in laboratory rodents: Animal welfare and the methods of science

Examined types of and goals for the environmental enrichment of laboratory rodents. Studies concerning environmental complexity, social housing, and increases in cage size suggest that professional judgments are not a reliable basis for evaluating the outcomes of enrichment programs. Successful...

Year Published: 1999Topics: Environmental EnrichmentAnimal Type: Rat, Rodent

Citation: Galef Jr., B. G. 1999. Environmental enrichment in laboratory rodents: Animal welfare and the methods of science. Journal of Applied Animal Welfare Science 2, 267-280.

Aspen wood-wool is preferred as a resting place, but does not affect intracage fighting in male BALB/c and C57BL/6J mice

The nesting material [aspen wood-wool] used in this study did not cause any adverse effects on the animals, as determined by both behavioural and physiological observations. On the other hand, it might have a positive value for the animals; the...

Year Published: 1999Animal Type: Mouse, Rodent

Citation: Eskola, S., Kaliste-Korhonen, E. 1999. Aspen wood-wool is preferred as a resting place, but does not affect intracage fighting in male BALB/c and C57BL/6J mice. Laboratory Animals 33, 108-121.

Environmental enrichment may alter the number of rats needed to achieve statistical significance

The aim of this study was to evaluate whether two enrichment items, an aspen tube and block, have any impact on commonly analysed clinical chemistry and physiological parameters of Wistar rats and - more importantly - on the extent of...

Year Published: 1999Topics: Environmental EnrichmentAnimal Type: Rat, Rodent

Citation: Eskola, S., Lauhikari, M., Voipio, H.-M. et al. 1999. Environmental enrichment may alter the number of rats needed to achieve statistical significance. Scandinavian Journal of Laboratory Animal Science 26(3), 134-144.

The use of aspen blocks and tubes to enrich the cage environment of laboratory rats

Female and male outbred Wistar rats (n=48) were allocated into three groups at weaning; control, tube and block groups (n = 8 males and 8 females in each) Animals were conventionally housed for five weeks in groups of four per...

Year Published: 1999Topics: Environmental EnrichmentAnimal Type: Rat, Rodent

Citation: Eskola, S., Lauhikari, M., Voipio, H.-M. et al. 1999. The use of aspen blocks and tubes to enrich the cage environment of laboratory rats. Scandinavian Journal of Laboratory Animal Science 26(1), 1-10.

Rat cage modification: Improving welfare

Rat cages with grid floors are used extensively for safety assessment studies. ... In an attempt to compromise between the requirements of humans and animals, a nest box was added to the cages, solid inserts were designed to cover 50%...

Year Published: 1999Animal Type: Rat, Rodent

Citation: Dickson, C., Wrightson, D. 1999. Rat cage modification: Improving welfare. Animal Technology 50, 43-44.

Diet self-selection and food hoarding after food deprivation by Siberian hamsters

Siberian hamsters (Phodopus sungorus) increase food hoarding, but not food intake, after a fast. Because the physiological mechanisms underlying these changes in food hoarding are virtually unknown, we sought insight into these mechanisms by allowing hamsters to self-select their diet...

Year Published: 1999Animal Type: Hamster, Rodent

Citation: Day, D., Mintz, E., Bartness, T. 1999. Diet self-selection and food hoarding after food deprivation by Siberian hamsters. Physiology & Behavior 68, 187-194.

Warning! Nearby construction can profoundly affect your experiments

This is meant to alert people to potentially major effects of construction projects on research results. Because we study the effects of stress on regulation of ACTH and corticosterone secretion and of serotonin receptors and stress on energy balance, we...

Year Published: 1999Animal Type: Mouse, Rat, Rodent

Citation: Dallman, M. F., Akana, S. F., Bell, M. E. et al. 1999. Warning! Nearby construction can profoundly affect your experiments. Endocrine 11, 111-113.

Rearing environmental enrichment in two inbred strains of mice: 1

Inanimate enrichment promoted body weight increase and reduced fear reactions.

Year Published: 1999Topics: Emotion, Pain, & Sentience, Environmental EnrichmentAnimal Type: Mouse, Rodent

Citation: Chapillon, P., Mannechi, C., Belzung, C. et al. 1999. Rearing environmental enrichment in two inbred strains of mice: 1. Effects on emotional reactivity. Behavior Genetics 29, 41-46.