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. 
Musk, G. C., Ezzy, B. J., Kenchington, L. M. et al. 2020. A comparison of buffered tricaine methanesulfonate (MS-222) and isoeugenol anesthesia for caudal fin clipping in zebrafish (Danio rerio). JAALAS 59(6), 732-736.

The purpose of this study was to compare the safety and efficacy of buffered tricaine methanesulfonate (MS-222) and isoeugenol for the anesthesia of zebrafish undergoing caudal fin clipping. Eighty 9 mo Danio rerio (AB strain)...

Eyer, A. E., Miller, L. J. 2020. Evaluating the influence of conspecifics on a male giant anteater’s (Myrmecophaga tridactyla) pacing behavior. Animal Behavior and Cognition 7(4), 556–566.

Stereotypic behavior has been studied in various species, but little information exists on stereotypies in giant anteaters (Myrmecophaga tridactyla) under professional care. Giant anteaters are known for their solitary nature and well-developed sense of smell...

Kravchuk, L., Watson, C. 2020. Corn snakes can behaviorally enhance crypsis by choosing complex backgrounds and substrate. Animal Behavior and Cognition 7(1), 39–48.

Many organisms have evolved coloration that increases their likelihood of survival. Crypsis is one such mechanism employed by many animals to avoid detection by blending into their habitat. By remaining unseen, these animals can enhance...

Spain, M., Fuller, G., Allard, S. 2020. Effects of habitat modifications on behavioral indicators of welfare for Madagascar giant hognose snakes (Leioheterodon madagascariensis). Animal Behavior and Cognition 7(1), 70–81.

Although historically understudied, the empirical evaluation of captive reptile welfare is becoming more common, and zoos continue making modifications to their reptile facilities with the goal of improving welfare. In this study, we evaluated the...

Tan, S. L. T., Handasyde, K. A., Rault, J.-L. et al. 2020. Insensitivity to reward shifts in zebrafish (Danio rerio) and implications for assessing affective states. Animal Cognition 23(1), 87–100

Theory and empirical findings predict that individuals in a negative affective state are more sensitive to unexpected reward loss and less sensitive to unexpected reward gain compared to individuals in a neutral or positive affective...

Butler, J. L., Kennerley, S. W. 2019. Mymou: A low-cost, wireless touchscreen system for automated training of nonhuman primates. Behaviour Research Methods 51, 2559–2572.

Training nonhuman primates (NHPs) to perform cognitive tasks is essential for many neuroscientific investigations, yet laboratory training is a time-consuming process with inherent limitations. Habituating NHPs to the laboratory staff and experimental equipment can take...

Ellis, T., Rimmer, G. S. E., Parker, S.-J. et al. 2019. In-tank underwater cameras can refine monitoring of laboratory fish. Animal Welfare 28(2), 191-203.

Laboratory animals need to be monitored to check the status of their health and welfare. Routine checks of laboratory fish are limited to visual observations of physical appearance and behaviour, but for species held in...

Batzina, A., Drossos, I.-P., Karakatsouli, N. 2019. Effects of familiarity on individual growth and feeding behaviour of European seabass Dicentrarchus labrax. Applied Animal Behaviour Science 211, 112-117.

Available literature indicates that fish are able to recognize familiar conspecifics and that familiarity may offer important benefits (e.g. more stable social environment, improved foraging behavior, growth, survival). In the practice of intensive rearing of...

Parrott, M. L., Nation, A., Selwood, L. 2019. Female mate choice significantly increases captive breeding success, and scents can be frozen to determine choice, in the stripe-faced dunnart. Applied Animal Behaviour Science 214, 95-101.

Devising non-invasive techniques to maintain natural behaviours and increase breeding success of captive populations is a high priority in the conservation of endangered species. Allowing animals to choose their own mates not only preserves behaviours...

Howell, C. P., Cheyne, S. M. 2019. Complexities of using wild versus captive activity budget comparisons for assessing captive primate welfare. Journal of Applied Animal Welfare Science 22(1), 78-96.

Activity budget comparisons between groups or individuals in the wild and those in captivity are commonly used to determine the range of wild-type behaviors that nonhuman animals in captivity perform. These comparisons are conducted with...

Catapani, M. L., Pires, J. S. R., da Silva Vasconcellos, A. 2019. Single- or pair-housed: Which is better for captive southern tamanduas? Journal of Applied Animal Welfare Science 22(3), 289-297.

The captive environment can limit some important behavioral options for nonhuman animals, which often results in decreased welfare. The companion of a conspecific can be a source of complexity in captivity, but this aspect has...

Arechavala-Lopez, P., Saraiva, J. L. 2019. Welfare of Cultured and Experimental Fishes. Basel, Switzerland: MDPI, 132 pages.

This open access book is a printed edition of the Special Issue on Welfare of Cultured and Experimental Fishes that was published in the journal Fishes. The PDF is free for download.

Fife-Cook, I., Franks, B. 2019. Positive welfare for fishes: Rationale and areas for future study. Fishes 4(2), 31.

Traditional animal welfare paradigms have focused on maintaining physical health and mitigating negative impacts to wellbeing. Recently, however, the field has increasingly recognized the importance of positive welfare (i.e., mental and physical states that exceed...

Saraiva, J. L., Arechavala-Lopez, P., Castanheira, M. F. et al. 2019. A global assessment of welfare in farmed fishes: The FishEthoBase. Fishes 4(2), 30.

Fish welfare is an essential issue that needs to be tackled by the aquaculture industry. In order to address it, studies have been limited to a small number of species and the information is generally...

Woodward, M. A., Winder, L. A., Watt, P. J. 2019. Enrichment increases aggression in zebrafish. Fishes 4(1), 22.

Environmental enrichment, or the enhancement of an animal’s surroundings when in captivity to maximise its wellbeing, has been increasingly applied to fish species, particularly those used commercially. Laboratory species could also benefit from enrichment, but...

Hopper, L. M., Fernandez‐Duque, E., Williams, L. E. 2019. Testing the weekend effect hypothesis: Time of day and lunar phase better predict the timing of births in laboratory‐housed primates than day of week. American Journal of Primatology 81(7), e23026.

The weekend effect hypothesis proposes that captive primates are more likely to give birth during times of low disturbance and reduced staff activity. The hypothesis specifically predicts that laboratory‐housed primates will be more likely to...

Silva, P. F., de Leaniz, C. G., Luchiari, A. C. 2019. Fear contagion in zebrafish: A behaviour affected by familiarity. Animal Behaviour 153, 95-103.

Emotional contagion has recently been described in fish but whether it is affected by familiarity is not known. We tested whether the sight of a distressed conspecific elicited fear in zebrafish, Danio rerio, and whether...

Riggio, G., Mariti, C., Boncompagni, C. et al. 2019. Feeding enrichment in a captive pack of European wolves (Canis lupus lupus): Assessing the effects on welfare and on a zoo's recreational, educational and conservational role. Animals 9(6), 331.

This study investigated the effects of two feeding enrichment programs on the behaviour of a captive pack of European wolves (Canis lupus lupus) and their correlation with both zoo visitors' interest towards the exhibit and...

Sherwen, S. L., Hemsworth, P. H. The visitor effect on zoo animals: Implications and opportunities for zoo animal welfare. Animals 9(6), 366.

Achieving and maintaining high standards of animal welfare is critical to the success of a modern zoo. Research has shown that an animal's welfare is highly dependent on how various individual animal factors (e.g., species...

Jakob-Hoff, R., Kingan, M., Fenemore, C. et al. 2019. Potential impact of construction noise on selected zoo animals. Animals 9(8), 504.

In anticipation of a major construction project in an urban New Zealand zoo, a study was initiated to assess the response to construction noise of selected animal species (elephant, giraffe, emu and alligator) previously observed...

Lambert, H., Carder, G., D'Cruze, N. 2019. Given the cold shoulder: A review of the scientific literature for evidence of reptile sentience. Animals 9(10), 821.

We searched a selection of the scientific literature to document evidence for, and explorations into reptile sentience. The intention of this review was to highlight; (1) to what extent reptile capability for emotions have been...

DePasquale, C., Fettrow, S., Sturgill, J. et al. 2019. The impact of flow and physical enrichment on preferences in zebrafish. Applied Animal Behaviour Science 215, 77-81.

Environmental enrichment is used extensively to improve the welfare of animals in captivity, however, the importance of physical exercise as enrichment is only now coming to light. A key question in assessing the welfare of...

McMurray, C., Allen, N., Hook, S. et al. 2018. I3S software as a refinement technique to identify individuals within a captive Scyliorhinus canula population. Animal Technology and Welfare 17(3), 204-205 (IAT Congress 2018 Poster Presentation).

Demarking individual animals within a group is often required in research. However, the process of invasive tagging induces stress and if a tag becomes detached it may wound the animal and/or prevent identification. Photo identification...

Campbell, J., Shafiei Sabet, S., Slabbekoorn, H. 2019. Particle motion and sound pressure in fish tanks: A behavioural exploration of acoustic sensitivity in the zebrafish. Behavioural Processes 164, 38-47.

Underwater sound fields can be complex, both in open water and small tank environments. Here we measured 1) spatial variation in artificially elevated sound levels in a small fish tank for both particle motion and...

Velkey, A. J., Boles, J., Betts, T. K. et al. 2019. High fidelity: Assessing zebrafish (Danio rerio) responses to social stimuli across several levels of realism. Behavioural Processes 164, 100-108.

Behavioral assays of zebrafish shoaling have recently been employed to investigate social behavior in zebrafish models of psychiatric disease. Many studies have developed simulated models of conspecifics to serve as alternatives to live shoals in...