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. 
Bozzay, J. D., Walker, P. F., Atwood, R. E. et al. 2023. Development, refinement, and characterization of a nonhuman primate critical care environment. PLOS ONE 18(3), e0281548.

Systemic inflammatory response remains a poorly understood cause of morbidity and mortality after traumatic injury. Recent nonhuman primate (NHP) trauma models have been used to characterize the systemic response to trauma, but none have incorporated...

Danforth, M. D., Clyde, V. L., Jourdan, B. et al. 2023. Blood pressure monitoring in zoologically managed bonobos (Pan paniscus). American Journal of Primatology 85(3), e23474.

In response to the growing evidence that hypertension may play a significant role in the development of cardiovascular disease (CVD) in bonobos, the Great Ape Heart Project established a finger blood pressure (BP) monitoring protocol...

Higham, J. P., Cooper, E. B., Whalen, C. et al. 2023. Urinary cytokine measurements do not reflect surgery-induced inflammation in rhesus macaques. American Journal of Primatology 85(8), e23506.

Measurement of the health and disease status of free-ranging primates is often limited by a lack of available biomarkers of immune activation and inflammation that can be applied noninvasively via the measurement of urine or...

Flores Dueñas, C. A., Cordero Yañez, I. A., González, R. M. et al. 2023. Translational echocardiography: The dog as a clinical research model of cardiac dysfunction. Applied Sciences 13(7), 4437.

Heart disease is a major contributor to mortality and disability on a global scale. Hence, there is a need for research to improve non-invasive diagnostic techniques. Diseases in dogs with characteristics very similar to those...

Rexroat, E. K., Haughton, C. L., Fox, K. 2023. Using a cost-effective, efficient method to train young dogs to cooperate for multiple blood collection procedures in a pharmacokinetics study. Laboratory Animal Science Professional 11(6) (November/December), 34-36.

Behavioral testing slings, such as the Pavlov sling, offer an effective form of restraint for beagles while minimizing stress. Although these slings provide effective restraint, their high cost makes them less likely to be considered...

Alizadeh, E. A., Graf, K., Schiwon, J. et al. 2023. Thirty years of telemetry-based data acquisition for cardiovascular drug safety evaluation: Applications and optimization. Journal of Pharmacological and Toxicological Methods 122, 107279.

Conducting safety evaluations of new drugs using conscious animals has been a specialty of our working group for thirty years. In this article, we review the various technical challenges and solutions dealt with over the...

Broche, N., Mouri, K., Suzumura, T. et al. 2023. Measuring short-term changes in stress-associated salivary analytes in free-ranging Japanese macaques (Macaca fuscata). Primates 64(4), 439–449.

Monitoring short-term changes of endocrine responses in non-human primates living in wild populations is a challenge. Saliva contains enzymes, steroids, and various analytes that can be broadly useful for helping us understand physiological responses to...

Molinaro, H. G., Anderson, G. S., Gruny, L. et al. 2022. Use of blood lactate in assessment of manual capture techniques of zoo-housed crocodilians. Animals 12(3), 397.

Species-specific welfare indicators are important in promoting positive welfare for zoo animals. Reptiles are a notoriously understudied group in regards to behavior, welfare needs, and husbandry requirements. Using opportunistically obtained samples, we evaluated how blood...

Barton, J. C., Didier, M. D., Silvestrini, P. et al. 2022. A noninvasive method of temperature measurement using a noncontact handheld infrared thermometer fails to correlate with rectal temperature in dogs and cats. Journal of the American Veterinary Medical Association 260(7), 752-757.

OBJECTIVE: To perform a retrospective, multicenter observational study that compares the agreement of rectal temperature with the temperature measured with noncontact infrared thermometer (NCIT) in a population of dogs and cats. ANIMALS: 168 dogs and...

Buckmaster, C. L., Levesque, D., LaFollette, M. et al. 2022. Five hot topics in refinement of nonhuman primate neuroscience research. Laboratory Animal Science Professional 10(1) (January/February), 24-26.

Members of the North American 3Rs Collaborative (NA3RsC) refinement initiative have chosen to summarize developments in five hot topics of interest: 1. Tips for welfare-friendly transport, chairing, and restraint; 2. Guidance on refining food and...

Arfuso, F., Acri, G., Piccione, G. et al. 2022. Eye surface infrared thermography usefulness as a noninvasive method of measuring stress response in sheep during shearing: Correlations with serum cortisol and rectal temperature values. Physiology & Behavior 250, 113781.

During shearing, animals’ welfare is adversely affected and acute stress occurs. Once animal perceives a threat, it develops behavioral, autonomic, endocrine or immune responses to maintain homeostasis. This study aimed to investigate the usefulness of...

van der Laan, J. E., Vinke, C. M., Arndt, S. S. 2022. Evaluation of hair cortisol as an indicator of long-term stress responses in dogs in an animal shelter and after subsequent adoption. Scientific Reports 12(1), 5117.

Shelter dogs are exposed to a variety of stressors. Among non-invasive techniques, hair cortisol concentration (HCC) is suggested an easy to collect biomarker for giving insight into long-term stress responses. We evaluated HCC as an...

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...

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...

van der Laan, J. E., Vinke, C. M., Arndt, S. S. 2022. Evaluation of hair cortisol as an indicator of long-term stress responses in dogs in an animal shelter and after subsequent adoption. Scientific Reports 12(1), 5117.

Shelter dogs are exposed to a variety of stressors. Among non-invasive techniques, hair cortisol concentration (HCC) is suggested an easy to collect biomarker for giving insight into long-term stress responses. We evaluated HCC as an...

Reicher, V., Bálint, A., Újváry, D. et al.2022. Non-invasive sleep EEG measurement in hand raised wolves. Scientific Reports 12(1), 9792.

Sleep research greatly benefits from comparative studies to understand the underlying physiological and environmental factors affecting the different features of sleep, also informing us about the possible evolutionary changes shaping them. Recently, the domestic dog...

Edes, A. N., Zimmerman, D., Jourdan, B. et al. 2022. Value ranges and clinical comparisons of serum DHEA-S, IL-6, and TNF-α in western lowland gorillas. Animals 12(19), 2705.

Physiological data can provide valuable information about the health and welfare of animals. Unfortunately, few validated assays and a lack of information on species-typical levels of circulating biomarkers for wildlife make the measurement, interpretation, and...

Mayes, B. T., Tait, L. A., Cowley, F. C. et al. 2022. Stocking density, restricted trough space, and implications for sheep behaviour and biological functioning. Frontiers in Veterinary Science 9, 965635.

Stocking density and trough space allowance can potentially impact sheep welfare during live export voyages. The aim of this study was to assess the welfare implications for sheep housed at five allometric stocking densities, with...

Kishida, T., Motokawa, Y., Yokoi, R. et al. 2022. Less invasive, simultaneous, and continuous measurements of locomotor activity and body temperature using the nano tag® small accelerometer device in cynomolgus monkeys. Journal of Pharmacological and Toxicological Methods 118, 107224.

Locomotor activity and body temperature evaluations of cynomolgus monkeys are useful to understand the effects of drugs on the central nervous system. Here, we describe a simple, inexpensive, and less invasive evaluation method using the...

Navarro-Castilla, A., Garrido, M., Hawlena, H. et al. 2021. Non-invasive monitoring of adrenocortical activity in three sympatric desert gerbil species. Animals 11(1), 75.

The study of the endocrine status can be useful to understand wildlife responses to the changing environment. Here, we validated an enzyme immunoassay (EIA) to non-invasively monitor adrenocortical activity by measuring fecal corticosterone metabolites (FCM)...

Prior, H., Holbrook, M. 2021. Strategies to encourage the adoption of social housing during cardiovascular telemetry recordings in non-rodents. Journal of Pharmacological and Toxicological Methods 108, 106959.

The National Centre for the Replacement, Refinement and Reduction of Animals in Research (NC3Rs) is working with industry to promote social housing during cardiovascular telemetry recordings within non-rodent safety pharmacology and toxicology studies. Following surveys...

Vis, A., Lammers, J. C. A. M., de Vroege, R. et al. 2021. Strategies to improve survival from surgery for heart valve implantation in sheep. Comparative Medicine 71(3), 235-239.

Sheep are a commonly used and validated model for cardiovascular research and, more specifically, for heart valve research. Implanting a heart valve on the arrested heart in sheep is complex and is often complicated by...

Koshman, Y. E., Wilsey, A. S., Bird, B. M. et al. 2021. Automated blood sampling in canine telemetry studies: Enabling enhanced assessments of cardiovascular liabilities and safety margins. Journal of Pharmacological and Toxicological Methods 109, 107066.

Introduction: A successful integration of automated blood sampling (ABS) into the telemetry instrumented canine cardiovascular model is presented in this study. This combined model provides an efficient means to quickly gain understanding of potential effects...

Wilson-Welder, J. H., Frank, A. T. 2021. Use of food enrichment for medication delivery in large groups of sheep. Laboratory Animal Science Professional 9(3) (May/June), 40-43.

In a 2018 AALAS webinar on Sheep and Goat Analgesia, Dr. Susie Vogel, a small ruminant expert, introduced the concept of getting sheep and goats to willingly take medication by putting it in a tasty...

Archibald, W., Glynn, C. 2021. Refining cages for social housing of non-human primates on ADME studies. Animal Technology and Welfare 20(2), 172-174.

The assessment and understanding of Absorption, Distribution, Metabolism and Elimination (ADME) for new pharmaceuticals is required in regulatory submissions. Typically, ADME studies are conducted using metabolism cages designed for the single housing of animals to...