Rat

Note on assessing the time of acclimatization of rats after a 5-h transport to a new animal facility

Rats have to recover from the transport for at least 4 days, as reflected by the returning of BT, HR and Act to before transport levels.

Year Published: 2006Animal Type: Rat, Rodent

Citation: Kramer, K., Giral, M., Robert, R. et al. 2006. Note on assessing the time of acclimatization of rats after a 5-h transport to a new animal facility. American Association for Laboratory Animal Science [AALAS] Meeting Official Program, 162 (Abstract).

Effects of cage-cleaning frequency and bedding type on laboratory rat health and welfare

They were cleaned either twice-weekly, weekly, or every 2 wk and kept on either aspen woodchips or an absorbent paper bedding. Behavioral welfare indicators, injuries and general health, weight gain, chromodacryorrhoea, willingness to be handled and post-mortem lung pathology were...

Year Published: 2006Animal Type: Rat, Rodent

Citation: Mason, G. J., Burn, C. C. 2006. Effects of cage-cleaning frequency and bedding type on laboratory rat health and welfare. American Association for Laboratory Animal Science [AALAS] Meeting Official Program, 122 (Abstract).

Role of cage material, working style and hearing sensitivity in perception of animal care noise

During daily care, laboratory animals are exposed to a variety of sounds which may have effects on welfare and also cause physiological and behavioural changes. In this study, sounds from selected rat care procedures were recorded: pulling cage out of...

Year Published: 2006Animal Type: Rat, Rodent

Citation: Voipio, H.-M., Nevalainen, T., Halonen, P. et al. 2006. Role of cage material, working style and hearing sensitivity in perception of animal care noise. Laboratory Animals 40(4), 400-409.

Investigation of appropriate sanitization frequency for rodent caging accessories: Evidence supporting less-frequent cleaning

This study provides data relevant to establishing a validated frequency for sanitization of rodent caging accessories while controlling, and potentially decreasing, costs associated with sanitization... The cages were evaluated at several time points from 2 wk to 6 mo. For...

Year Published: 2006Animal Type: Rat, Rodent

Citation: Schondelmeyer, C. W., Dillehay, D. L., Webb, S. K. et al. 2006. Investigation of appropriate sanitization frequency for rodent caging accessories: Evidence supporting less-frequent cleaning. Journal of the American Association for Laboratory Animal Science [Contemporary Topics in Laboratory Animal Science] 45(6), 40-43.

Clinical pathology laboratory values of rats housed in wire-bottom cages compared with those of rats housed in solid-bottom cages

Our laboratory data were evaluated by a board-approved veterinary clincical phathologist, who determined that there were no clincially relevant differences between the two groups.

Year Published: 2006Topics: HousingAnimal Type: Rat, Rodent

Citation: Sauer, M. B., Dulac, H., Clark, S. et al. 2006. Clinical pathology laboratory values of rats housed in wire-bottom cages compared with those of rats housed in solid-bottom cages. Journal of the American Association for Laboratory Animal Science [Contemporary Topics in Laboratory Animal Science] 45(1), 30-35.

The communicative functions of touch in humans, nonhuman primates, and rats: a review and synthesis of the empirical research

In social situations, nonhuman primates use touch to modulate stress. Specifically, grooming relieves the stress associated with aggression, social relationships, mounting, sexual mounts, and embraces, which then, in turn, promotes the formation and maintenance of relationships. Touch, then promotes physical...

Year Published: 2006Animal Type: Nonhuman Primate, Rat, Rodent

Citation: Hertenstein, M. J., Verkamp, J. M., Kerestes, A. M. et al. 2006. The communicative functions of touch in humans, nonhuman primates, and rats: a review and synthesis of the empirical research. Genetic, Social, and General Psychology Monographs 132(1), 5-94.

Influence of housing on the consequences of chronic mild stress in female rats

The chronic mild stress (CMS) paradigm was developed to model anhedonia in animals. The repeated administration of a series of unpredictable, mild stressors attempts to mimic the daily stress associated with the onset of clinical depression in humans. Male animals...

Year Published: 2007Animal Type: Rat, Rodent

Citation: Baker S, Bielajew C. 2007. Influence of housing on the consequences of chronic mild stress in female rats. Stress. 10;283-93.

Effects of housing condition on experimental outcome in a reproduction toxicity study

In most toxicity studies single housing is still preferred, as social stress is believed to have an effect on experimental outcome through interaction with the toxic compound or by increasing variation. There are also arguments that single housing will have...

Year Published: 2007Animal Type: Rat, Rodent

Citation: Verwer CM, Bos RVD, Hendriksen CFM, et al. 2007. Effects of housing condition on experimental outcome in a reproduction toxicity study. Reg Tox and Pharmacol. 48;184-193.

Effect of noise on the morphology of the inestinal mucosa in laboratory rats

To determine whether noise-induced stress disrupts the intestinal mucosa of laboratory rats, one group of 8 rats ("noise" rats) was subjected to 15 min of white noise (90 dB) daily for 3 wk. Another group ("quiet" rats) was housed for...

Year Published: 2006Animal Type: Rat, Rodent

Citation: Baldwin, A. L., Primeau, R. L., Johnson, W. E. 2006. Effect of noise on the morphology of the inestinal mucosa in laboratory rats. Journal of the American Association for Laboratory Animal Science [Contemporary Topics in Laboratory Animal Science] 45(1), 74-82.

Laboratory environments and rodents’ behavioural needs: a review

Laboratory housing conditions have significant physiological and psychological effects on rodents, raising both scientific and humane concerns. Published studies of rats, mice and other rodents were reviewed to document behavioural and psychological problems attributable to predominant laboratory housing conditions. Studies...

Year Published: 2006Animal Type: Mouse, Rat, Rodent

Citation: Balcombe, J. P. 2006. Laboratory environments and rodents' behavioural needs: a review. Laboratory Animals 40, 217-235.