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. 
Delgado San Martin, J. A., Worthington, P., Yates, J. W. T. 2015. Non-invasive 3D time-of-flight imaging technique for tumour volume assessment in subcutaneous models. Laboratory Animals 49(2), 168-171.

Subcutaneous tumour xenograft volumes are generally measured using callipers. This method is susceptible to inter- and intra-observer variability and systematic inaccuracies. Non-invasive 3D measurement using ultrasound and magnetic resonance imaging (MRI) have been considered, but...

Faller, K. M., McAndrew, D. J., Schneider, J. E. et al. 2015. Refinement of analgesia following thoracotomy and experimental myocardial infarction using the Mouse Grimace Scale. Experimental Physiology 100(2), 164-172.

What is the central question of this study? There is an ethical imperative to optimize analgesia protocols for laboratory animals, but this is impeded by our inability to recognize pain reliably. We examined whether the...

Pizzi, R., Dowling, A., Brown, D. et al. 2015. Facial thermography is not useful in assessing body temperature in common squirrel monkeys (Saimiri sciureus) in comparison to rectal temperatures. Journal of Zoo and Aquarium Research 3(3), 94-98.

A group of 39 captive common squirrel monkeys (Saimiri sciureus) had their body temperature measurements compared by rectal thermometry and facial infrared thermal imaging (Flir i3, Flir Systems Inc). Squirrel monkeys were caught up and...

Blois-Heulin, C., Rochais, C., Camus, S. et al. 2015. Animal welfare: Could adult play be a false friend? Animal Behavior and Cognition 2(2), 156–185.

There is no consensus regarding the functions of play. As play behavior is a characteristic of young stages of development, it has been suggested that the higher prevalence of adult play observed in domestic animals...

Sneddon, L. U., Elwood, R. W., Adamo, S. A. et al. 2014. Defining and assessing animal pain. Animal Behaviour 97, 201-212.

The detection and assessment of pain in animals is crucial to improving their welfare in a variety of contexts in which humans are ethically or legally bound to do so. Thus clear standards to judge...

Burlingame, L. A., Na, J., Dunbar, M. et al. 2014. Behavioral ethogram as a health assessment tool in a feline vaccine study. American Association for Laboratory Animal Science [AALAS] Meeting Official Program, 610. (Abstract #P227).

For infectious disease studies, assessment of feline health is traditionally limited to metrics such as body temperature (BT), change in body weight (BW), and clinical signs (CS). Recently, behavioral ethograms designed for assessment of rabbits...

Dunbar, M. L., David, E. M., Aline, M. R. et al. 2014. Validation of a novel behavioral ethogram for identification of postoperative pain in the guinea pig (Cavia porcellus). American Association for Laboratory Animal Science [AALAS] Meeting Official Program, 538 (Abstract #PS48).

Although the guinea pig (Cavia porcellus) has been used in research for over a century and remains one of the most prevalent AWA covered species today, very little has been elucidated in the literature about...

Whittaker, A. L., Howarth, G. S. 2014. Use of spontaneous behaviour measures to assess pain in laboratory rats and mice: How are we progressing? Applied Animal Behaviour Science 151, 1-12.

The understanding and recognition of pain in laboratory rats and mice has advanced considerably in recent times. However, there is evidence that despite these advances, analgesics are still relatively underutilised in these species. One possible...

Kalliokoski, O., Teilmann, A. C., Jacoben, K. R. et al. 2014. Do singly housed male mice get lonely? Evidence of depressive states after short-term single housing of BALB/c and C57BL/6 mice. American Association for Laboratory Animal Science [AALAS] Meeting Official Program, 597. (Abstract #P184).

Through behavioral and preference studies we know that mice prefer company. Laboratory mice should thus never be housed alone, if a viable option exists. Yet single housing is a fairly common practice, in particular with...

Rock, M. L., Rodriguez, K., Karas, A. Z. et al. 2014. The time-to-integrate-to-nest test as an indicator of wellbeing in laboratory mice. JAALAS 53(1), 24-28.

Minimizing and alleviating pain and distress in laboratory mice without compromising the methodologic integrity of research is a crucial goal. However, current methods for welfare assessment in mice are not well suited to cageside checks...

Rock, M. L., Karas, A. Z., Gallo, M. S. et al. 2014. Housing condition and nesting experience do not affect the time to integrate to nest test (TINT). Animal Welfare 23(4), 381-385.

Managing and assessing well-being in laboratory mice (Mus musculus) is both challenging and necessary. Assessments intended to detect negative welfare states in mice are usually performed via observation of animals in the home cage, but...

Martínez Silvestre, A. 2014. How to assess stress in reptiles. Journal of Exotic Pet Medicine 23(3), 240-243.

Stress, as an adaptive response of any animal to a stimulus that presents a threat to homeostasis, can occur in reptiles. Yet, many veterinarians fail to recognize the signs of stress in reptiles. In this...

Melotti, L., Bailoo, J., Murphy, E. et al. 2014. Play in rats: Association across contexts and types, and analysis of structure. Animal Behavior and Cognition 1(4), 489–501.

Play has been proposed as a promising indicator of positive animal welfare. We aimed to study play in rats across contexts (conspecific/heterospecific) and types (social: pinning, being pinned; solitary: scampering), and we investigated its structure...

Yuki, S., Okanoya, K. 2014. Behavioral correlates of 50-kHz ultrasonic vocalizations in rats: Progressive operant discrimination learning reduces frequency modulation and increases overall amplitude. Animal Behavior and Cognition 1(4), 452–463.

Ultrasonic vocalizations (USVs) in rats are thought to contain ecological signals reflecting emotional states. These USVs are centered on 50-kHz, and frequency modulation (FM) is hypothesized to indicate positive emotion; however, results from recent studies...

Makowska, I. J., Weary, D. M. 2013. Assessing the emotions of laboratory rats. Applied Animal Behaviour Science 148, 1-12.

Rats are one of the most commonly used species in research, and decades of testing have yielded a large amount of information pertaining to their experience of emotion. The aim of this review is to...

Reinhardt, V. (ed.) 2013. Compassion Makes a Difference - Discussions by the Laboratory Animal Refinement & Enrichment Forum [LAREF], Volume III. Animal Welfare Institute, Washington, DC.

This is the third volume of discussions that took place on the Laboratory Animal Refinement & Enrichment Forum (LAREF). This forum is dedicated to the exchange of personal experiences of refining the conditions under which...

Lambeth, S. P., Schapiro, S. J., Bernacky, B. J. et al. 2013. Establishing 'quality of life' parameters using behavioural guidelines for humane euthanasia of captive non-human primates. Animal Welfare 22(4) 429-435.

Chronic pain and distress are universally accepted conditions that may adversely affect an animal’s quality of life (QOL) and lead to the humane euthanasia of an animal. At most research institutions and zoological parks in...

Hrapkiewicz, K., Colby, L. A., Denison, P. 2013. Clinical Laboratory Animal Medicine: An Introduction (4th Ed). Wiley-Blackwell, Ames, IA.

Clinical Laboratory Animal Medicine: An Introduction, Fourth Edition offers a user-friendly guide to the unique anatomy and physiology, care, common diseases, and treatment of small mammals and nonhuman primates. Carefully designed for ease of use...

Gaskill, B. N., Karas, A. Z., Garner. J. P. et al. 2013. Nest building as an indicator of health and welfare. JoVE (Journal of Visualized Experiments) 83, e51012.

We demonstrate the utility of nest building behavior in laboratory mice as an indicator of welfare. Nest scoring is a sensitive technique that is altered by temperature, illness, and aggression. The time to integrate into...

Warwick, C., Arena, P., Lindley, S. et al. 2013. Assessing reptile welfare using behavioural criteria. In Practice 35(3), 123-131.

While clinical reptile medicine as a science is in its ascendancy among veterinary surgeons and other interested groups, familiarity with the often related issue of reptilian behavioural and psychological health appears less common. Behavioural change...

Abelson, K. S. P., Jacobsen, K. R., Sundbom, R. et al. 2012. Voluntary ingestion of nut paste for administration of buprenorphine in rats and mice. Laboratory Animals 46(4), 349-351.

An adequate analgesic strategy is important to improve the postoperative recovery and welfare of laboratory rats and mice. It is desirable that the method for administering the drug is non-invasive and stress-free. We have previously...

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...

Fante, F., Baldan, N., De Benedictis, G. M. et al. 2012. Refinement of a macaque transplantation model: Application of a subcutaneous port as a means for long-term enteral drug administration and nutritional supplementation. Laboratory Animals 46(2), 114-121.

A new application of a device enabling the long-term enteral administration of drugs or nutritional supplementation was developed for implementing in research entailing the use of macaques (Macaca fascicularis). After implanting a subcutaneous port, a...

Corbett, A., McGowin, A., Sieber, S. et al. 2012. A method for reliable voluntary oral administration of a fixed dosage (mg/kg) of chronic daily medication to rats. Laboratory Animals 46(4), 318-324.

Stress can influence a number of physiological processes including adult neurogenesis, metabolism, cardiovascular function, immune function, neurophysiological function, endocrine function and inflammatory processes following injury. In testing drugs which may be used to treat various...

Camacho, J. N., Boskovic, S., Moeller, E. 2012. Improved nonhuman primate social housing using visual cues associated for an intensive research study. American Association for Laboratory Animal Science [AALAS] Meeting Official Program, 636-637 (Abstract #PS35).

Lean management-based visual tools have been used to improve the quality of animal care associated with a complex research study involving immune-compromised cynomolgus monkeys (M. fascicularis) in various postsurgical recovery states. In order to effectively...