Rodent

Plasma corticosterone levels during repeated presentation of two intensities of restraint stress: Chronic stress and habituation

Corticosterone levels of control rats increased when the animals witnessed stress reactions of conspecifics during forced restraint.

Year Published: 1988Animal Type: Rat, Rodent

Citation: Pitman, D. L., Ottenweller, J. E., Natelson, B. H. 1988. Plasma corticosterone levels during repeated presentation of two intensities of restraint stress: Chronic stress and habituation. Physiology and Behavior 43, 47-55.

The effects of gentling on open-field behaviour of rats

Non-gentled rats showed higher frequencies and durations of passive motionlessness and higher proportions of loose stools and rigid movements during frighting situations than rats who had been gentled for three weeks.

Year Published: 1988Topics: HandlingAnimal Type: Rat, Rodent

Citation: Hirsjarvi, P. A. , Junnila, M. A. 1988. The effects of gentling on open-field behaviour of rats. In: New Developments in Biosciences: Their Implications for Laboratory Animal Science. Beynen, A. C. , Solleveld, H. A. (eds), 399-403. Marinus Nijhoff, Dordrecht, The Netherlands.

Guinea pigs

Initial attempts to provide the animals a covered area for refuge showed that the guinea pigs adopted the shelter very quickly and would dart under cover when startled. ... We soon realized that this was a most useful behaviour when...

Year Published: 1988Topics: HousingAnimal Type: Guinea Pig, Rodent

Citation: Gray, G. 1988. Guinea pigs. Humane Innovations and Alternatives in Animal Experimentation 2, 48-49.

Social stress in laboratory mouse colonies

Cage cleaning is a disturbing event for group-housed mice.

Year Published: 1989Animal Type: Mouse, Rodent

Citation: Brain, P. F. 1989. Social stress in laboratory mouse colonies. In: Laboratory Animal Welfare Research: Rodents. Universities Federation for Animal Welfare (ed), 49-61. Universities Federation for Animal Welfare, Potters Bar, UK.

Cage design reduces emotionality in mice

The results of this study clearly showed that the presence of vertical partitions in the cages of mice reduced the stressfulness of caging and also led to mice which were less reactive when tested outside their cages. ... When reared...

Year Published: 1989Animal Type: Mouse, Rodent

Citation: Chamove, A. S. 1989. Cage design reduces emotionality in mice. Laboratory Animals 23, 215-219.

Effect of cage population density on plasma corticosterone and peripheral lymphocyte populations of laboratory mice

Groups were formed of 2, 4 or 8 animals in cages with a floor areas of 390 sq.cm. The results of this study suggest that population density of 4 mice per cage induced minimal stress compared to that induced by...

Year Published: 1989Animal Type: Mouse, Rodent

Citation: Peng, X., Lang, C. M., Drozdowicz, C. K. et al. 1989. Effect of cage population density on plasma corticosterone and peripheral lymphocyte populations of laboratory mice. Laboratory Animals 23, 302-306.

Plantar decubitus ulcers in rats and rabbits

Year Published: 1989Animal Type: Rabbit, Rat, Rodent

Citation: Honma, M., Kast, A. 1989. Plantar decubitus ulcers in rats and rabbits. Jikken Dobutsu 38, 253-248.

Individual housing does not influence the adaptation of the pituitary-adrenal axis and other physiological variables to chronic stress in adult male rats

Individually housed rats displayed a higher corticosterone stress response to 30-minute immobilization than group-housed rats.

Year Published: 1989Animal Type: Rat, Rodent

Citation: Giralt, M., Armario, A. 1989. Individual housing does not influence the adaptation of the pituitary-adrenal axis and other physiological variables to chronic stress in adult male rats. Physiology and Behavior 45, 477-481.

Transportation of rats affects behavior on non-transported rats in the absence of physical contact

Exposure [visual, auditory and olfactory] to stressed conspecifics was accompanied by an increase in cortisol levels.

Year Published: 1989Animal Type: Rat, Rodent

Citation: De Laat, J. M. T., Van Tintelen, G., Beynen, A. C. 1989. Transportation of rats affects behavior on non-transported rats in the absence of physical contact. Zeitschrift f?r Versuchstierkunde 32, 235-237.

Restricted daily exposure to environmental enrichment increases the diversity of exploration

Two hours of daily exposure to environmental enrichment produced similar object exploration effects than 24 hours of daily exposure.

Year Published: 1989Topics: Environmental EnrichmentAnimal Type: Rat, Rodent

Citation: Widman, D. R., Rosellini, R. A. 1989. Restricted daily exposure to environmental enrichment increases the diversity of exploration. Physiology and Behavior 47, 57-62.