Rodent

The use of telemetry to refine experimental technique

Individual housing in mice was associated with significantly increased heart rate.

Year Published: 2000Animal Type: Mouse, Rodent

Citation: Einstein, R., Rowan, C., Billing, R. et al. 2000. The use of telemetry to refine experimental technique. In: Progress in the Reduction, Refinement and Replacement of Animal Experimentation. Balls, M., Van Zeller, A. M., Halder, M. E. (eds), 1187-1197. Elsevier, Amsterdam.

Use of a feeder insert to reduce obesity in rats

By inserting a modified stainless steel plate into the feeder, area of exposed food is reduced, and may result in increased exploratory activity, which may lead to decrease in body weights and food consumption values (all while continuing to provide...

Year Published: 2000Animal Type: Rat, Rodent

Citation: Van Berkum, L. E. 2000. Use of a feeder insert to reduce obesity in rats. American Association for Laboratory Animal Science [AALAS] Meeting Official Program, 125 (Abstract).

Improving the environment of mice by using synthetic gauze pads

The mice with gauze pads preferred to rest on them. In addition, these mice showed a statistically significant reduction in food consumption, but their body weights and weight gains did not differ from those of animals without gauze pads.

Year Published: 2000Animal Type: Mouse, Rodent

Citation: Smith, G. D., Hoffman, W. P., Lee, E. M. et al. 2000. Improving the environment of mice by using synthetic gauze pads . Contemporary Topics in Laboratory Animal Science 39(6), 51-53.

The Dalila effect:C57BL6 mice barber whiskers by plucking

Barbering is a common abnormal behavior in laboratory mice. Barbers hold down their cage mates, who adopt a defensive posture, and remove hair by plucking with their incisors. Once removed, the hair is often chewed by the barber. Although plucking...

Year Published: 2000Animal Type: Mouse, Rodent

Citation: Sarna, J. R., Dyck, R. H., Whishaw, I. Q. 2000. The Dalila effect:C57BL6 mice barber whiskers by plucking. Behavioural Brain Research 108, 39-45.

Preference of single housed rats for a solid-bottom or wire-bottom stainless steel cage floor

We modified a stainless steel multiple-animal wire-bottom cage by covering one-half of the floor surface with a solid plate of stainless steel [emphasis added]. .. At night, rats demonstrated a significant (P

Year Published: 2000Animal Type: Rat, Rodent

Citation: Rock, F. M., Jaslow, B. W., Peterson, A. et al. 2000. Preference of single housed rats for a solid-bottom or wire-bottom stainless steel cage floor. American Association for Laboratory Animal Science [AALAS] Meeting Official Program, 79 (Abstract).

Group housing female guinea pigs

Group housing [female] guinea pigs can save space and money, while improving housing standards. The authors describe enclosure design, enrichments, and husbandry techniques that facilitate group housing female guinea pigs. No data are included in this article.

Year Published: 2000Topics: Environmental Enrichment, Housing, Husbandry & Management, Social Housing & CompanionshipAnimal Type: Guinea Pig, Rodent

Citation: Raje, S. S., Stewart, K. L. 2000. Group housing female guinea pigs. Lab Animal 29(8), 31-32.

Development of spontaneous stereotyped behavior in deer mice: effects of early and late exposure to a more complex environment

We hypothesized that spontaneous stereotypies exhibited by deer mice housed under standard laboratory conditions were the result of environmental restriction and that a sensitive period exists for the development/prevention of stereotypies. Exposure to a more complex environment early in the...

Year Published: 2000Animal Type: Other Rodent, Rodent

Citation: Powell, S. B., Newman, H. A., McDonald, T. A. et al. 2000. Development of spontaneous stereotyped behavior in deer mice: effects of early and late exposure to a more complex environment. Developmental Psychobiology 37, 100-108.

50-kHz chirping (laughter?) in response to conditioned and unconditioned tickle-induced reward in rats: effects of social housing and genetic variables

In these studies the incidence of conditioned and unconditioned 50-kHz ultrasonic vocalizations (USVs) in young rats was measured in response to rewarding manual tickling by an experimenter. We found that isolate-housed animals vocalize much more then socially housed ones, and...

Year Published: 2000Topics: Emotion, Pain, & Sentience, Social Housing & CompanionshipAnimal Type: Rat, Rodent

Citation: Panksepp, J., Burgdorf, J. 2000. 50-kHz chirping (laughter?) in response to conditioned and unconditioned tickle-induced reward in rats: effects of social housing and genetic variables. Behavioural Brain Research 115, 25-38.

A conspecific attenuates prolactin responses to open-field exposure in rats

Acute exposure to a novel environment, such as an open field, generally results in a prolactin surge, while several days of exposure to the open field is often characterized by a decline in prolactin. As exposure to the open field...

Year Published: 2000Animal Type: Rat, Rodent

Citation: Wilson, J. H. 2000. A conspecific attenuates prolactin responses to open-field exposure in rats. Hormones and Behavior 38(1), 39-43.

Modulation of aggression in male mice: Influence of cage cleaning regime and scent marks

Group housing of male laboratory mice often leads to welfare problems due to aggressive behaviour. ... Aggression peaks after disturbances such as cage cleaning .. Our results indicated that neither kinship nor distribution of urine marks affected aggression. Olfactory cues...

Year Published: 2000Animal Type: Mouse, Rodent

Citation: Van Loo, P. L. P., Kruitwagen, C. L. J. J., Van Zutphen, L. F. M. 2000. Modulation of aggression in male mice: Influence of cage cleaning regime and scent marks. Animal Welfare 9, 281-295.