Refinement Database

Database on Refinement of Housing, Husbandry, Care, and Use of Animals in Research

This database, created in 2000, is updated every four months with newly published scientific articles, books, and other publications related to improving or safeguarding the welfare of animals used in research.

Tips for using the database:

  • This landing page displays all of the publications in the database.
  • Use the drop-down menus to filter these publications by Animal Type, Setting, and/or Topic.
  • Clicking on a parent category (e.g., Rodent) will include publications relating to all the items in that category (e.g., Chinchilla, Gerbil, Guinea Pig, etc.).
  • You may also add a keyword to further narrow your search.
  • Please note that at this time, only publications dated 2010 or later (with some exceptions) can be filtered by Animal Type and Topic, and only publications dated 2020 or later (with some exceptions) can be filtered by Setting. Most publications older than 2010 can only be searched by keyword. 
Baumans, V., Bennett, K., Donnelly, M. et al. 2013. The problem with the dark bottom-row cage for non-human primates: A discussion by the Laboratory Animal Refinement & Enrichment Forum. Animal Technology and Welfare 12, 111-114.

Since there is evidence that the bottom cages can impact research, this should be a good reason to eliminate the two-tier system with its species-inappropriate bottom-tier cages.

Gazes, R. P., Brown, E. K., Basile, B. M. et al. 2013. Automated cognitive testing of monkeys in social groups yields results comparable to individual laboratory-based testing. Animal Cognition 16(3), 445–458.

Cognitive abilities likely evolved in response to specific environmental and social challenges and are therefore expected to be specialized for the life history of each species. Specialized cognitive abilities may be most readily engaged under...

Truelove, M. A., Martin, A. L., Perlman, J. E. et al. 2012. Behavioral assessment of rhesus macaque (Macaca mulatta) pairs through a common laboratory event. American Journal of Primatology 74(S1), 42. (35th Meeting of the American Society of Primatologists Scientific Program, Abstract #54)

Using behavioral data to predict pair stability would be helpful for improving management of pairs and prevention of injury. Differences in reactions to presumed laboratory stressors, such as location moves, may provide information about pair...

Metcalf Pate, K. A., Freeman, Z. T., Shirk, E. et al. 2012. Platelet activation in the context of stress in self-injurious rhesus macaques. American Association for Laboratory Animal Science [AALAS] Meeting Official Program, 640 (Abstract #PS49).

Stress has been associated with adverse hematologic and physiologic consequences, including immunosuppression and an increased risk of cardiac disease. Aberrant platelet activation has been documented in humans exposed to mental stress, and activated platelets, as...

Hutchinson, E. K., Freeman, Z., Rice, K. A. et al. 2012. Objective assessment of self-injurious behavior in rhesus macaques and successful treatment with guanfacine. American Association for Laboratory Animal Science [AALAS] Meeting Official Program, 647-648 (Abstract #PS78).

Self-injurious behavior (SIB) occurs sporadically in 5% to 15% of captive nonhuman primates, with over-representation among males and those animals housed in single caging prior to adulthood. Though SIB may manifest as a range of...

Griffis, C., Martin, A. L., Perlman, J. E. et al. 2012. Effects of play caging on the behavior and enrichment use of singly-housed rhesus macaques. American Journal of Primatology 74(S1), 35. (35th Meeting of the American Society of Primatologists Scientific Program, Abstract #33)

This study examined whether allowing 10 singly-housed adult male rhesus macaques (Macaca mulatta) 2-week access to a larger play cage would increase their species-typical behavior and decrease anxiety and abnormal behavior. The play cage consisted...

Gottlieb, D. H., Ghirardo, S., Minier, D. E. et al. 2012. Efficacy of 3 types of foraging enrichment for rhesus macaques (Macaca mulatta). JAALAS 50(6), 888-894.

The 3 enrichment devices had different effects on individual expression of stereotypy: supertubes decreased it, shakers increased it, and puzzle balls led to a decrease followed by an increase. We present potential reasons for the...

Walters, S. L., Torres-Urbano, C. J., Chichester, L. et al. 2012. The impact of huts on physiological stress: A refinement in post-transport housing of male guinea pigs (Cavia porcellus). Laboratory Animals 46(3), 220-224.

The ideal animal model would contribute no confounding variables in experimental science. Variables affect experimental design resulting in increased animal use or repeated studies. We demonstrated a simple refinement which may reduce the number of...

Coleman, K. 2012. Individual differences in temperament and behavioral management practices for nonhuman primates. Applied Animal Behaviour Science 137(3-4), 106-113.

This review will examine how individual differences in temperament might affect, or be affected by, behavioral management practices for captive primates. Measuring temperament may help us predict the outcome of social introductions. It can also...

Andrews, K., Morelli, N., Ruesterholz, E. et al. 2012. The use of bedding for groups of rhesus macaques. American Journal of Primatology 74(S1), 69. (35th Meeting of the American Society of Primatologists Scientific Program, Abstract #138)

The use of substrate can have benefits to group housed macaques, including decreased aggression and increased foraging. Still, in some facilities, the use of bedding is perceived as time intensive and costly. In this study...

NC3Rs, University of Stirling. 2011. Common Marmoset Care [Online resource].

The three main divisions of 'marmosetcare.com' aim respectively to promote: an understanding of the range of behaviour in this species, placing this behaviour in the context of its natural habitat and promoting good welfare in...

Truelove, M. A., Martin, A. L., Perlman, J. E. et al. 2011. Rhesus macaque (Macaca mulatta) pair-housing assessment using a quantitative data collection system. American Association for Laboratory Animal Science [AALAS] Meeting Official Program, 744-745 (Abstract #PS110).

A behavioral data collection system is described to monitor compatibility of rhesus macaque pairs.

Runeson, E. P., Lee, G. H., Crockett, C. M. et al. 2011. Evaluating paint rollers as an intervention for alopecia in monkeys in the laboratory (Macaca nemestrina). Journal of Applied Animal Welfare Science 14(2), 138-149.

Adult female macaques (Macaca nemestrina) in the laboratory with alopecia from known or suspected overgrooming were subjects in a study evaluating effectiveness of a grooming device. The intervention evaluated was a paint roller on a...

Veillette, M., Reebs, S. G. 2011. Shelter choice by Syrian hamsters (Mesocricetus auratus) in the laboratory. Animal Welfare 20(4), 603-611.

The preference of Syrian hamsters (Mesocricetus auratus) for different in-cage shelters was tested. First, 15 males and 15 females were made to choose between a cage with a shelter and one without. Different shelters were...

Sheets, M. D., Lindstrom, K. E., Carbone, L. G. 2011. The effects of sanded (bottom only) perches on finch feet. American Association for Laboratory Animal Science [AALAS] Meeting Official Program, 779 (Abstract #P157).

Birds that are kept in captivity often require nail trims, presumably due to the lack of opportunity to wear the nails down on natural substrates. For many birds, restraint for the nail trim may result...

Beisner, B. A., Isbell, L. A. 2011. Factors affecting aggression among females in captive groups of rhesus macaques (Macaca mulatta). American Journal of Primatology 73(11), 1152-1159.

Captive groups of primates often exhibit higher rates of aggression than wild, free-ranging groups. It is important to determine which factors influence aggression in captivity because aggression, particularly intense aggression, can be harmful to animal...

West, A. M., Leland, S. P., Muhammad, F. et al. 2010. Temperament ratings of laboratory rhesus macaques (Macaca mulatta): Effects of cage level and room composition. American Journal of Primatology 72(S1), 42. (33rd Meeting of the American Society of Primatologists Scientific Program, Abstract #52)

Measures of temperament in nonhuman primates generally reflect interactions between inherent individual characteristics and environmental contexts, and they may be indicators of physical and psychological well-being. Heritable aspects of temperament have been identified, but it...

Maier, A., Coleman, K. 2010. Rearing condition can affect success in social groups of rhesus macaques. American Journal of Primatology 72(S1), 36. (33rd Meeting of the American Society of Primatologists Scientific Program, Abstract #35)

Forming successful groups of rhesus macaques (Macaca mulatta) can be challenging. Males in particular do not always get along, and some need to be permanently removed due to fighting and trauma. Early rearing condition may...

Watson, L. M. 2010. Effectiveness of perforated plexiglass dividers as social grooming devices between neighboring, individually housed adult male Macaca fascicularis. Laboratory Primate Newsletter 49(4), 1-4.

A clear, perforated, plexiglass divider was installed between neighboring cynos to test whether it altered their proximity to one another, or prompted any behavioral changes. ... Adult male cynomolgus monkeys tend not to spend a...

Waitt, C. D., Bushmitz, M., Honess, P. E. 2010. Designing environments for aged primates. Laboratory Primate Newsletter, 49(3), 5-9.

In order to prevent physical and psychological deterioration in older animals, it is important to apply the same principles of environmental enrichment and housing as are applied to younger animals. As we have discussed above...

Koban, T. L., Leto, S., Kusznir, T. et al. 2010. A European Union-compliant housing environment for nonhuman primates in a toxicology laboratory. American Association for Laboratory Animal Science [AALAS] Meeting Official Program, 718-719 (Abstract #P118).

As a global company, our institution made the decision to install European Union (EU) Appendix A-compliant nonhuman primate cages at one of its facilities. This investment represented a substantial evolution of standards commonly employed within...

Hopper, K., Morales, P. R., Wagner, J. L. 2010. Effects of caging on bone metabolism in cynomolgus monkeys (Macaca mulatta). American Association for Laboratory Animal Science [AALAS] Meeting Official Program, 735 (Abstract #P173).

Juvenile cynomolgus monkeys are frequently used in drug pharmacokinetic and toxicology testing where they are cage housed for extendeded periods of time. In this study measures of body mass, bone metabolism, and turn over were...

Egeler, J. L., Hoekwater, S., Hoffman, H. D. 2010. A novel approach for utilizing large group-housing style cages for nonhuman primates in toxicology studies. American Association for Laboratory Animal Science [AALAS] Meeting Official Program, 716 (Abstract #P110).

The ability to provide permanent group-housed caging for nonhuman primates involved in toxicology research is quickly becoming an important step in improving the overall quality of life for these animals. This type of caging offers...

Egeler, J. L., Hoekwater, S., Hoffman, H. D. 2010. Monitoring program for the treatment of nonhuman primates with behavioral disorders. American Association for Laboratory Animal Science [AALAS] Meeting Official Program, 717 (Abstract #P113).

Maintaining the psychologic wellbeing of nonhuman primates housed in a laboratory setting is an important aspect in providing the best possible care for these animals. Nonhuman primates kept in captivity can begin to display abnormal...

Veillette, M., Reebs, S. G. 2010. Preference of Syrian hamsters to nest in old versus new bedding. Applied Animal Behaviour Science 125(3-4), 189-194.

This study tested whether Syrian hamsters (Mesocricetus auratus) have an aversion to old bedding (up to 14 days) by offering them the option to nest in a new cage. A secondary goal was to assess...