Rodent

Communication between rats of experiment-induced stress and its impact on experimental results

Stressful experimental procedures can give rise to signals or odours that affect non-treated animals present in the same or adjacent room.

Year Published: 1992Animal Type: Rat, Rodent

Citation: Beynen, A. C. 1992. Communication between rats of experiment-induced stress and its impact on experimental results. Animal Welfare 1, 153-159.

Of mice and kin: The functional significance of kin bias in social behaviour

Mice tend to be intolerant of same sex partners at the time of puberty. It is, therefore good advice to establish same sex groups well before the onset of puberty.

Year Published: 1991Animal Type: Mouse, Rodent

Citation: Barnard, C. J., Hurst, J. L., Aldhous, P. 1991. Of mice and kin: The functional significance of kin bias in social behaviour. Biological Reviews 66, 379-430.

Group-size, cage shelf level, and emotionality in nonobese diabetic mice?Impact on onset and incidence of IDDM

Emotionality' or 'fearfulness' is higher in mice housed in steel cages at the top of the rack than at the middle of bottom of the rack.Incident and reflected light decreased from the top to the bottom of the rack.

Year Published: 1991Animal Type: Mouse, Rodent

Citation: Ader, D. N., Johnson, S. B., Huang, S. W. et al. 1991. Group-size, cage shelf level, and emotionality in nonobese diabetic mice?Impact on onset and incidence of IDDM. Psychosomatic Medicine 53(3), 313-321.

Antibody response to rat erythrocytes and some behaviors in two strains of mice after social isolation

Social isolation (of adult mice) influenced emotional behavior [under frightening conditions], but not the antibody response [to rat erythrocytes].

Year Published: 1992Animal Type: Mouse, Rodent

Citation: Fuste, A., Vidal, J. 1992. Antibody response to rat erythrocytes and some behaviors in two strains of mice after social isolation. Journal of General Psychology 120, 165-176.

Body weight and water intake of guinea pigs: influence of single caging and an unfamiliar new room

No changes in body weight are observed if adult male guinea pigs are removed from their groups and kept singly in their home enclosure. In contrast, subjects markedly lose weight and show a marked reduction of water intake if isolated...

Year Published: 1992Animal Type: Guinea Pig, Rodent

Citation: Fenske, M. 1992. Body weight and water intake of guinea pigs: influence of single caging and an unfamiliar new room. Journal of Experimental Animal Science 35, 71-79.

Increased plasma ACTH responses to stress in nonhandled compared with handled rats require basal levels of corticosterone and are associated with increased levels of ACTH secretagogues in the median eminence

Handling of rat pups produced siginificantly lower plasma ACTH responses to a variety of stressors compared to nonhandled pups.

Year Published: 1992Animal Type: Rat, Rodent

Citation: Viau, V., Sharma, S., Plotsky, P. M. et al. 1992. Increased plasma ACTH responses to stress in nonhandled compared with handled rats require basal levels of corticosterone and are associated with increased levels of ACTH secretagogues in the median eminence. Journal of Neuroscience 113, 1097-1105.

Environmental enrichment, neocortical ectopias, and behavior in the autoimmune NZB mouse

Environmental enrichment is most effective for behavioral impairments mediated via cortical ectopias.

Year Published: 1992Animal Type: Mouse, Rodent

Citation: Schrott, L. M., Denenberg, V. H., Sherman, G. F. et al. 1992. Environmental enrichment, neocortical ectopias, and behavior in the autoimmune NZB mouse. Brain Research 67, 85-93.

Ultrasound and laboratory animals

Rodents are very sensitive to ultrasound.

Year Published: 1992Animal Type: Rodent

Citation: Sales, G. D., Milligan, S. R. 1992. Ultrasound and laboratory animals. Animal Technology 43, 89-98.

Cage enrichment for hamsters housed in suspended wire cages

Golden Syrian hamsters (n=99) were housed individually in suspended wire cages so that spilled food and excreta could be removed. After 8 days, the hamsters developed bizarre aggressive behavior which consisted of growling, hissing, aggressive posturing toward humans, destruction of...

Year Published: 1992Animal Type: Hamster, Rodent

Citation: McClure, D. E., Thomson, J. I. 1992. Cage enrichment for hamsters housed in suspended wire cages. Contemporary Topics in Laboratory Animal Science 31(4), 33 (Abstract).

Vibrissaeless mutant rats with a modular representation of innervated sinus hair follicules in the cerebral cortex

Specialized areas in the cerebral cortex are essential to mediate the various sensory modalities and are crucial to their recovery in disease. We recently observed that prenatal photoreceptor cues are not indispensable for the development of the elaborate modular organization...

Year Published: 1992Animal Type: Rodent

Citation: Kuljis, R. O. 1992. Vibrissaeless mutant rats with a modular representation of innervated sinus hair follicules in the cerebral cortex. Experimantal Neurology 115, 146-150.