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. 
Alejandro, J., Huffman, M. A., Bercovitch, F. B. 2022. Costs and benefits of living in a vegetated, compared with non‐vegetated, enclosure in male Japanese macaques (Macaca fuscata). Zoo Biology 41(2), 97-107.

Improving captive environments for primates has been an important tool to enhance animal welfare. One method has been to provide primates with naturalistic vegetated enclosures to promote species-specific behaviors, enhancing interactions with their social and...

Lutz, C. K., Coleman, K., Hopper, L.M. et al. 2022. Nonhuman primate abnormal behavior: Etiology, assessment, and treatment. American Journal of Primatology 84(6), e23380.

Across captive settings, nonhuman primates may develop an array of abnormal behaviors including stereotypic and self-injurious behavior. Abnormal behavior can indicate a state of poor welfare, since it is often associated with a suboptimal environment...

Vicino, G. A., Sheftel, J. J., Radosevich, L. M. 2022. Enrichment is simple, that’s the problem: Using outcome-based husbandry to shift from enrichment to experience. Animals 12(10), 1293.

Over the decades, the use of environmental enrichment has evolved from a necessary treatment to a “best practice” in virtually all wildlife care settings. The breadth of this evolution has widened to include more complex...

Schilling, A.-K., Mazzamuto, M. V., Romeo, C. 2022. A review of non-invasive sampling in wildlife disease and health research: What’s new? Animals 12(13), 1719.

In the last decades, wildlife diseases and the health status of animal populations have gained increasing attention from the scientific community as part of a One Health framework. Furthermore, the need for non-invasive sampling methods...

Narshi, T. M., Free, D., Justice, W. S. M. et al. 2022. Welfare assessment of invertebrates: Adapting the animal welfare assessment grid (AWAG) for zoo decapods and cephalopods. Animals 12(13), 1675.

Consumer demand for invertebrates is on the rise as their numbers in the wild dwindle. However, with the growing conservation efforts of modern zoos and aquariums, and evidence from over 300 studies showing that invertebrates...

Martin, C. F., Muramatsu, A., Matsuzawa, T. 2022. Apex and ApeTouch: Development of a portable touchscreen system and software for primates at zoos. Animals 12(13), 1660.

We report on the development and testing of a portable touchscreen apparatus and accompanying software program for primate enrichment, cognitive research, and husbandry applications. For zoos considering using technology to bolster scientific efforts or enhance...

Knaebe, B., Weiss, C. C., Zimmermann, J. et al. 2022. The promise of behavioral tracking systems for advancing primate animal welfare. Animals 12(13), 1648.

Recent years have witnessed major advances in the ability of computerized systems to track the positions of animals as they move through large and unconstrained environments. These systems have so far been a great boon...

Wark, J. D. 2022. Power up: Combining behavior monitoring software with business intelligence tools to enhance proactive animal welfare reporting. Animals 12(13), 1606.

Animal welfare is a dynamic process, and its evaluation must be similarly dynamic. The development of ongoing behavior monitoring programs in zoos and aquariums is a valuable tool for identifying meaningful changes in behavior and...

Stull, C., Heagerty, A., Coleman, K. 2022. Video conference technology as a tool for pair introduction in rhesus macaques. Animals 12(14), 1783.

Pair housing is known to promote welfare for macaques in captivity. However, finding compatible partners can be challenging, particularly when animals are not located near one another. Because macaques show interest in videos of conspecifics...

Maaskant, A., Janssen, I., Wouters, I. M. et al. 2022. Assessment of indoor air quality for group-housed macaques (Macaca spp.). Animals 12(14), 1750.

Indoor Air Quality (IAQ) is strongly associated with animal health and wellbeing. To identify possible problems of the indoor environment of macaques (Macaca spp.), we assessed the IAQ. The temperature (°C), relative humidity (%) and...

Ramankevich, A., Wengerska, K., Rokicka, K. et al. 2022. Environmental enrichment as part of the improvement of the welfare of Japanese quails. Animals 12(15), 1963.

The aim of this study was to evaluate the indicators of the behavioural and physiological welfare of Japanese quails (Coturnix japonica) as possible responses to the enrichment of the birds’ habitat. The study sample consisted...

Paterson, E. A., Turner, P. V. 2022. Challenges with assessing and treating pain in research primates: A focused survey and literature review. Animals 12(17), 2304.

Research primates may undergo surgical procedures making effective pain management essential to ensure good animal welfare and unbiased scientific data. Adequate pain mitigation is dependent on whether veterinarians, technicians, researchers, and caregivers can recognize and...

Kriengwatana, B. P., Mott, R., ten Cate, C. 2022. Music for animal welfare: A critical review & conceptual framework. Applied Animal Behaviour Science 251, 105641.

Music can have powerful effects on human health and wellbeing. These findings have inspired an emerging field of research that focuses on the potential of music for animal welfare, with most studies investigating whether music...

Olsson, I. A. S., Nielsen, B. L., Camerlink, I. 2022. An international perspective on ethics approval in animal behaviour and welfare research. Applied Animal Behaviour Science 253, 105658.

Ethics assessment is essential in studies that involve animals as subjects, which includes research on animal behaviour and welfare. Although ethics review mechanisms within institutions are long established in many regions, processes may be non-uniform...

Bethell, E. J., Khan, W., Hussain, A. 2022. A deep transfer learning model for head pose estimation in rhesus macaques during cognitive tasks: Towards a nonrestraint noninvasive 3Rs approach. Applied Animal Behaviour Science 255, 105708.

Head orientation is a measure of attention used in behavioral psychological research with non-human primates. It is used across a broad range of disciplines and settings, from the field to the laboratory. Field methods are...

Leconstant, C., Spitz, E. 2022. Integrative Model of Human-Animal Interactions: A One Health–One Welfare systemic approach to studying HAI. Frontiers in Veterinary Science 9, 656833.

The Integrative Model of Human-Animal Interactions (IMHAI) described herewith provides a conceptual framework for the study of interspecies interactions and aims to model the primary emotional processes involved in human-animal interactions. This model was developed...

Lee, V. E., Arnott, G., Turner, S. P. 2022. Social behavior in farm animals: Applying fundamental theory to improve animal welfare. Frontiers in Veterinary Science 9, 932217.

A fundamental understanding of behavior is essential to improving the welfare of billions of farm animals around the world. Despite living in an environment managed by humans, farm animals are still capable of making important...

Franklin, A. N., Martin, A. L., Perlman, Siti Norsyuhada Kamaluddin et al. 2022. Functional analysis and successful treatment of a captive rhesus macaque’s disruptive behavior. Journal of Applied Animal Welfare Science 25(3), 287-296.

Functional analysis (FA) is a method developed and used by behavior analysts in human clinical settings to identify possible environmental variables that reinforce undesired behavior. FA is increasingly being applied to better understand the behavior...

Smith, L. E., Rowe, C., Mackay, F. et al. 2022. Aquarium tank design is integral to the elimination of mantle abrasion in the captive curled octopus (Eledone cirrhosa): A case study at Macduff Marine Aquarium. Journal of Applied Animal Welfare Science 25(4), 355-361.

Macduff Marine Aquarium is a native species aquarium situated on the Moray Firth coastline and houses the curled octopus, Eledone cirrhosa, for public display. Historically, the designated octopus display tank has been in-keeping with the...

Truelove, M. A., Smith, P. O., Martin, A. L. et al. 2022. Predictors of long-term social compatibility in rhesus macaques (Macaca mulatta) housed in research settings. Journal of Applied Animal Welfare Science 25(4), 418-426.

Social housing improves the well-being of monkeys in research settings; however, little is known about factors influencing the long‐term stability of established, full-contact pairs. Archival data were examined to determine whether sex, age, weight, duration...

McLeod, A. R., Burton, J. A., Mackey, C. A. et al. 2022. An assessment of ambient noise and other environmental variables in a nonhuman primate housing facility. Lab Animal 51(8), 219-226.

Acoustic noise and other environmental variables represent potential confounds for animal research. Of relevance to auditory research, sustained high levels of ambient noise may modify hearing sensitivity and decrease well-being among laboratory animals. The present...

Jacob, G., Katti, H., Cherian, T. et al. 2021. A naturalistic environment to study visual cognition in unrestrained monkeys. eLife 10, e63816.

Macaque monkeys are widely used to study vision. In the traditional approach, monkeys are brought into a lab to perform visual tasks while they are restrained to obtain stable eye tracking and neural recordings. Here...

Williams, W. O., Baneux, P. 2022. Humane Intervention Points: Refining endpoint terminology to incorporate non-euthanasia intervention options to improve animal welfare and preserve experimental outcomes. Laboratory Animals 56(5), 482-489.

Consideration of The Three R’s (Replacement, Reduction, and Refinement) is essential when setting Humane Endpoints; however, a common interpretation assumes that Humane Endpoints are timepoints to perform euthanasia. This interpretation is not always consistent with...

Spitzer, H. B., Meagher, R. K., Proudfoot, K. L. 2022. The impact of providing hiding spaces to farmed animals: A scoping review. PLOS ONE 17(11), e0277665.

Many wild animals perform hiding behaviours for a variety of reasons, such as evading predators or other conspecifics. Unlike their wild counterparts, farmed animals often live in relatively barren environments without the opportunity to hide...

Neil, D. M., Albalat, A., Thompson, J. 2022. The effects of electrical stunning on the nervous activity and physiological stress response of a commercially important decapod crustacean, the brown crab Cancer pagurus L. PLOS ONE 17(7), e0270960.

Increasing attention is being paid to the welfare of decapod crustaceans. Legislation exists for their humane slaughter in several countries and this is being debated in others. Electrical stunning may have potential for humane slaughter...