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. 
Coleman, K., Novak, M. A. 2017. Environmental enrichment in the 21st century. ILAR Journal 58(2), 295-307.

More than a quarter of a century has elapsed since the Animal Welfare Act mandated that research facilities develop and follow a plan to promote the psychological well-being of captive primates. Since passage of this...

Ullah, I., Zuberi, A., Khan, K. U. et al. 2017. Effects of enrichment on the development of behaviour in an endangered fish mahseer (Tor putitora). Applied Animal Behaviour Science 186, 93-100.

Structural enrichment in the rearing environment, not only promotes fish welfare, but also affects several aspects of behavioural biology of fish in aquaculture. Here an attempt was made to use physical-enrichment to improve the behaviour...

Stevens, C. H., Croft, D. P., Paull, G. C. et al. 2017. Stress and welfare in ornamental fishes: What can be learned from aquaculture? Journal of Fish Biology 91(2), 409-428.

The ornamental fish trade is estimated to handle up to 1.5 billion fishes. Transportation and handling of fishes imposes a range of stressors that can result in mortality at rates of up to 73%. Given...

Tucker, R. D. 2017. Woodchuck College. Laboratory Animal Science Professional 5(2) (June), 33-36.

Marmota monax is a valuable laboratory animal species used in studies of Hepatitis B virus (HBV), food intake, obesity, hibernation, and circannual cycles. This article describes the woodchuck’s (also known as groundhog) natural behavior and...

Sands, C., Evans, C., Buckmaster, C. A. 2017. The grooming sleeve: Encouraging conspecific-like behavior and strengthening the human-animal bond. Laboratory Animal Science Professional 5(2) (June), 52-53.

The act of grooming has been found to greatly decrease stress, heart rate, and cortisol levels in nonhuman primates; this decrease in stress and cortisol is seen in the animal being groomed, as well as...

Coleman, K., Weed, J. L., Schapiro, S. J. 2017. Chapter 2 - Psychological environmental enrichment of animals in research. In: Animal Models for the Study of Human Disease (2nd ed). Conn, P. M, (ed), 47-69. Academic Press, London, UK.

Environmental enrichment is an integral part of animal care practices. Enrichment generally refers to items we provide to the animals to support their behavioral needs. It provides a way to functionally simulate the natural environment...

Clark, F. 2017. Cognitive enrichment and welfare: Current approaches and future directions. Animal Behavior and Cognition 4(1), 52–71.

Cognitive enrichment” is a subset of enrichment that has gained interest from researchers over the past decade, particularly those working in zoos. This review explores the forms of cognitive enrichment that have been attempted for...

Brayley, C., Montrose, V. T. 2016. The effects of audiobooks on the behaviour of dogs at a rehoming kennels. Applied Animal Behaviour Science 174, 111-115.

Domestic dogs are often kept in kennelled environments. These may be stressful, and impact negatively upon welfare, due to unpredictable variations in space, social interaction and noise. Auditory stimulation such as music has been demonstrated...

Jolles, J. W., Aaron-Taylor, B., Manica, A. 2016. Recent social conditions affect boldness repeatability in individual sticklebacks. Animal Behaviour 112, 139-145.

Animal personalities are ubiquitous across the animal kingdom and have been shown both to influence individual behaviour in the social context and to be affected by it. However, little attention has been paid to possible...

de Groot, B., Cheyne, S. M. 2016. Does mirror enrichment improve primate well-being? Animal Welfare 25(2), 163-170.

Primates are highly social animals and appropriate enrichment is required to ensure their psychological well-being. Mirrors are sometimes used as social or sensory environmental enrichment. In this paper we investigate the suitability of mirrors as...

Johnson, C. H., Carter, K. 2016. The enrichment club. Lab Animal 45(9), 341.

Regulatory requirements provide instructions on enrichment specifically for nonhuman primates, but we believe all animals can benefit from enrichment if it is structured for that species. Hired as the Director of Behavior Management and Environmental...

Enser, S. 2016. Comparison of housing and welfare of group housed rabbits. Animal Technology and Welfare 15(1), 77-79.

This poster is based on welfare improvements gained from group housing rabbits in floor pens in the new Antibody Production Facility with a focus on development, behaviours and environmental enrichment in both male and female...

O'Keefe, S. 2016. Non-human primate housing facility at Newcastle University. Animal Technology and Welfare 15(2), 131-132.

Monkeys first arrived in the Comparative Biology Centre (CBC) at Newcastle University in 2000. They were housed in three small separate units consisting of steel and wooden cages. In 2011 a decision was made to...

Hopper, L. D. 2016. Automated microsampling technologies and enhancements in the 3Rs. ILAR Journal 57(2), 166-177.

Data collected in vivo is essential for advising decisions on drug screening and development and basic research, and animal models are used extensively for acquiring experimental measurements. Traditionally, collection of specimens has been invasive, stressful...

Kim-McCormack, N. N. E., Smith, C. L., Behie, A. M. 2016. Is interactive technology a relevant and effective enrichment for captive great apes? Applied Animal Behaviour Science 185, 1-8.

All non-human great apes are endangered, and for these animals, captive individuals play an important role in the species’ conservation management plan. Therefore, information about their current enrichment activities is essential for maintaining a healthy...

Bozicovich, T. F. M., Moura, A. S. A. M. T., Fernandes, S. et al. 2016. Effect of environmental enrichment and composition of the social group on the behavior, welfare, and relative brain weight of growing rabbits. Applied Animal Behaviour Science 182, 72-79.

The objective of the study was to investigate if environmental enrichment and the composition of the social group would affect the behavior and relative brain weight of growing rabbits. Rabbits (72 males and 72 females)...

Döringa, D., Kettera, D. A., Klima, A. et. al. 2016. Horn of calf hooves as chews in laboratory dogs. Journal of Veterinary Behavior 13, 39-45.

European law recommends the enrichment of laboratory dogs with chewing objects. This study examines the suitability of the horn of calf hooves for this purpose and was performed with 62 dogs (60 beagles, 2 Foxhound...

Döring, D., Haberland, B. E., Bauer, A. et al. 2016. Behavioral observations in dogs in 4 research facilities: Do they use their enrichment? Journal of Veterinary Behavior 13, 55-62.

European legislation recommends comfortable resting areas, toys, and chews in laboratory dogs' husbandry. However, there is no standard “enrichment” defined for laboratory dogs as yet. Different research facilities provide different housing conditions and forms of...

McEntee, D., Borg, K., Markiewicz, V. 2016. Establishment of a home-cage in vivo method of New Zealand white rabbit urine collection. Laboratory Animal Science Professional 4(4) (December), 44-46.

The most common methods for rabbit urine collection are newborn stroking, cystocentesis, and transfer to a metabolism cage.2 None of these options allow for a significant, quality amount of urine to be collected in vivo...

Stevens, T. 2016. Biscuit feeder increases foraging in baboons and reduces biscuit waste. Laboratory Animal Science Professional 4(3) (September), 54-55.

At the University of Oklahoma Health Sciences Center, Department of Comparative Medicine, we have a large captive colony of Olive Baboons (Papio anubis). Environmental enhancement is an integral part of the Comparative Medicine Baboon Research...

Ma, B., Green, J., Sizemore, S. et al. 2016. Variation on providing research dog enrichment. Laboratory Animal Science Professional 4(2) (June), 50-51.

In order to provide research dogs enrichment at our facility, veterinary staff suggested adapting the adjacent space to our dog housing buildings to allow for more species-specific behavior by creating an exercise area that both...

Winnicker, C., Gaskill, B., Garner, J. P. et al. 2016. A Guide to the Behavior & Enrichment of Laboratory Rodents. Charles River Laboratories.

Covering species-typical behavior as well as abnormal/malfunctional behavior and stereotypes observed in mice, rats, hamsters and gerbils, this is an excellent resource for those looking to implement or enhance an existing behavioral husbandry and enrichment...

Sullivan, M., Lawrence, C., Blache, D. 2016. Why did the fish cross the tank? Objectively measuring the value of enrichment for captive fish. Applied Animal Behaviour Science 174, 181-88.

There has been very little research into the enrichment preferences of ornamental fish, even though there are billions of fish kept in captivity as pets and research animals. We used preference and motivational testing to...

Kiddie, J., Collins, L. 2015. Identifying environmental and management factors that may be associated with the quality of life of kenneled dogs (Canis familiaris). Applied Animal Behaviour Science 167, 43-55.

This paper describes the use of a validated quality of life assessment tool (described elsewhere) to identify environmental and management factors that may affect quality of life in dogs kennelled in rehoming centres. Dogs were...

Caron, A., Lelong, C., Pascual, M. H. et al. 2015. Miniaturized blood sampling techniques to benefit reduction in mice and refinement in nonhuman primates: Application to bioanalysis in toxicity studies with antibody-drug conjugates. JAALAS 54(2), 145-152.

Minimizing the number of animals in regulatory toxicity studies while achieving study objectives to support the development of future medicines contributes to good scientific and ethical practices. Recent advances in technology have enabled the development...