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. 
Angiulli, E., Pagliara, V., Cioni, C. et al. 2020. Increase in environmental temperature affects exploratory behaviour, anxiety and social preference in Danio rerio. Scientific Reports 10(1), 5385.

The aim of this work is to investigate the effect of a temperature increase on the behaviour of adult zebrafish (Danio rerio) maintained for 21 days at 34 °C (treatment) and 26 °C (control). The temperatures chosen...

Padalino, B., Raidal, S. 2020. Effects of transport conditions on behavioural and physiological responses of horses. Animals 10(1), 160.

The regulations for minimal space and direction of travel for land transport in horses vary worldwide and there is currently no definitive guidance to promote equine health and welfare. This study evaluated the effects of...

Serres, A., Hao, Y., Wang, D. 2020. Swimming features in captive odontocetes: Indicative of animals’ emotional state? Behavioural Processes 170, 103998.

Captive welfare studies in odontocete species have been mostly conducted on bottlenose dolphins (Tursiops truncatus) while the welfare of many other species’ -including endangered species- remains poorly studied. More research is needed to find and...

Rogers, L., Sales, E., Shamsi, S. et al. 2020. Aggressive encounters lead to negative affective state in fish. PLOS ONE 15(4), e0231330.

Animals show various behavioural, neural and physiological changes in response to losing aggressive encounters. Here, we investigated affective state, which are emotion-like processes influenced by positive or negative experiences, in a territorial fish following aggressive...

Burkemper, M. C., Pairis-Garcia, M. D., Moraes, L. E. et al. 2020. Effects of oral meloxicam and topical lidocaine on pain associated behaviors of piglets undergoing surgical castration. Journal of Applied Animal Welfare Science 23(2), 209-218.

The objective of this study was to find a practical means of reducing pain associated with surgical castration by evaluating the effects of oral meloxicam and topical lidocaine, separately and in combination, on behavioral indicators...

Alemán-Laporte, J., Bandini, L. A., Garcia-Gomes, M. S. et al. 2020. Combination of ketamine and xylazine with opioids and acepromazine in rats: Physiological changes and their analgesic effect analysed by ultrasonic vocalization. Laboratory Animals 54(2), 171–182.

In this study, the effect of four anaesthetic protocols that included the combination of xylazine (X) and ketamine (K) with acepromazine (A) and opioids (methadone (Me), morphine (Mo) or tramadol (T)) was evaluated in laboratory...

Schneeberger, K., Röder, G., Taborsky, M. 2020. The smell of hunger: Norway rats provision social partners based on odour cues of need. PLOS Biology 18(3), e3000628.

When individuals exchange helpful acts reciprocally, increasing the benefit of the receiver can enhance its propensity to return a favour, as pay-offs are typically correlated in iterated interactions. Therefore, reciprocally cooperating animals should consider the...

Han, Y., Sichterman, B., Maria, C. et al. 2020. Similar levels of emotional contagion in male and female rats. Scientific Reports 10(1), 2763.

Emotional contagion, the ability to feel what other individuals feel without necessarily understanding the feeling or knowing its source, is thought to be an important element of social life. In humans, emotional contagion has been...

Stabach, J. A., Cunningham, S. A., Connette, G. et al. 2020. Short-term effects of GPS collars on the activity, behavior, and adrenal response of scimitar-horned oryx (Oryx dammah). PLOS ONE 15(2), e0221843.

GPS collars have revolutionized the field of animal ecology, providing detailed information on animal movement and the habitats necessary for species survival. GPS collars also have the potential to cause adverse effects ranging from mild...

Hempstead, M. N., Waas, J. R., Stewart, M. et al. 2020. Goat kids are not small calves: Species comparisons in relation to disbudding. Animal Welfare 29(3), 293-312.

Limited scientific literature is available for developing 'best practices' guidelines for the management of dairy goats (Caprus hircus), particularly goat kids. Disbudding practices for kids and calves appear to be similar, however, it is important...

Hempstead, M. N., Waas, J. R., Stewart, M. et al. 2020. Can isoflurane and meloxicam mitigate pain associated with cautery disbudding of 3-week-old goat kids? Animals 10(5), 878.

We evaluated the effect of pain mitigation strategies (isoflurane and meloxicam) on the behaviour and physiology of 3-week-old disbudded goat kids. Fifty Saanen does (mean ± SD, 21 ± 3 days old) were randomly allocated...

Foley, P. L., Kendall, L. V., Turner, P. V. 2019. Clinical management of pain in rodents. Comparative Medicine 69(6), 468–489.

The use of effective regimens for mitigating pain remain underutilized in research rodents despite the general acceptance of both the ethical imperative and regulatory requirements intended to maximize animal welfare. Factors contributing to this gap...

Smith J. C. 2019. A review of strain and sex differences in response to pain and analgesia in mice. Comparative Medicine 69(6), 490–500.

Pain and its alleviation are currently a highly studied issue in human health. Research on pain and response to analgesia has evolved to include the effects of genetics, heritability, and sex as important components in...

Larson, C. M., Wilcox, G. L., Fairbanks, C. A. 2019. Defining and managing pain in stroke and traumatic brain injury research. Comparative Medicine 69(6), 510–519.

Neurologic conditions such as stroke and traumatic brain injury are challenging conditions to study in humans. Animal models are necessary to uncover disease processes and develop novel therapies. When attempting to model these or other...

Bøgh, N., Agger, P., Omann, C. et al. 2020. New device for noninvasive telemetric monitoring of vital signs in healthy and newly operated piglets. JAALAS 59(1), 90–93.

Measuring vital signs is central to medical practice, but they are difficult to monitor in awake laboratory animals. We examined the feasibility of a noninvasive device [Cortrium C3 device] for telemetric assessment of respiration rate...

Améndola, L., Weary, D. M. 2020. Understanding rat emotional responses to CO2. Translational Psychiatry 10, 253.

The aim of this review is to summarize evidence regarding rat emotional experiences during carbon dioxide (CO2) exposure. The studies reviewed show that CO2 exposure is aversive to rats, and that rats respond to CO2...

Chu, D. 2020. Malawi cichlids: A colorful 4th R story. Laboratory Animal Science Professional 8(3) (May/June), 24-25.

This article describes the successful rehoming of 60 Malawi cichlids from a vivarium at Stanford University to San Diego Zoo and the California Academy of Sciences.

Skidmore, T., Roe, E. 2020. A semi-structured questionnaire survey of laboratory animal rehoming practice across 41 UK animal research facilities. PLOS ONE 15(6): e0234922.

If a laboratory animal survives an experiment without lasting compromised welfare, its future must be negotiated. Rehoming may be a consideration. This paper reports on research findings that provide an indication of the uptake of...

Hambrecht, S., Oerke, A.‐K., Heistermann, M. et al. 2020. Diurnal variation of salivary cortisol in captive African elephants (Loxodonta africana) under routine management conditions and in relation to a translocation event. Zoo Biology 39(3), 186–196.

The present study assessed the diurnal variation in salivary cortisol in captive African elephants during routine management (baseline) and in relation to a potential stressor (translocation) to evaluate to what extent acute stress may affect...

Turcsán, B., Tátrai, K., Petró, E. et al. 2020. Comparison of behavior and genetic structure in populations of family and kenneled beagles. Frontiers in Veterinary Science 7, 183.

In dogs, the social and spatial restriction associated with living in a kennel environment could lead to chronic stress and the development of abnormal behaviors (“kennel-dog syndrome”). However, little is known about how kenneled dogs...

Parois, S. P., Duttlinger, A. W., Richert, B. T. et al. 2020. Effects of three distinct 2-week long diet strategies after transport on weaned pigs' short and long-term welfare markers, behaviors, and microbiota. Frontiers in Veterinary Science 7, 140.

Alternative feed supplements have shown promising effects in terms of performance, but their effects on welfare have had little evaluation. In the present study, we aimed at evaluating the effect of diet supplementation on welfare...

Reinhardt, V. (ed.) 2020. It’s Okay to Cry - Discussions by the Laboratory Animal Refinement & Enrichment Forum [LAREF], Volume V. Animal Welfare Institute, Washington, DC.

This is the 5th volume of selected discussions that took place on the electronic Laboratory Animal Refinement & Enrichment Forum between February 2016 and December 2019. The forum was created in October 2002; it allows...

Elwood, R. W. 2020. Do arthropods respond to noxious stimuli purely by reflex? Animal Sentience 29(10).

Mikhalevich & Powell (2020) argue that it is wrong to dismiss the idea of sentience in invertebrates. Here, I expand on the evidence for crustaceans responding to noxious stimuli in ways that are not explained...

Andrade, B. M.T., Freire-Filho, R., Bezerra, B. 2020. The behaviours of a female blonde capuchin (Sapajus flavius) towards her dead infant. Behaviour 157(14/15), 1231-1238.

Here we describe the behaviour of a female blonde capuchin (Sapajus flavius) towards her dead infant and discuss possible explanations linked to the anecdotal event. We conducted our study in a fragment of Atlantic forest...

Zude, B. P., Jampachaisri, K., Pacharinsak, C. 2020. Use of flavored tablets of gabapentin and carprofen to attenuate postoperative hypersensitivity in an incisional pain model in rats (Rattus norvegicus). JAALAS 59(2), 163–169.

Providing postoperative analgesia to rats by oral administration, compared with injections, reduces stress from frequent handling and is technically easier for investigators. The purpose of this study was to investigate whether bacon-flavored tablets containing gabapentin...