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. 
Cavallino, L., Rincón, L., Scaia, M. F. 2023. Social behaviors as welfare indicators in teleost fish. Frontiers in Veterinary Science 10, 1050510.

Animal welfare is a key issue not only for aquaculture industry and food production, but also for daily husbandry practices in research topics related to physiology in wild and farmed animals. In this context, teleost...

Fonseca, M. W., Trindade, P. H. E., Pinho, R. H. et al. 2023. Development and validation of unesp-botucatu goat acute pain scale. Animals 13(13), 2136.

We aimed to develop and validate the Unesp-Botucatu goat acute pain scale (UGAPS). Thirty goats (5 negative controls and 25 submitted to orchiectomy) were filmed for 7 min at the time points 24 h before...

Holhorea, P. G., Felip, A., Calduch-Giner, J. À. et al. 2023. Use of male-to-female sex reversal as a welfare scoring system in the protandrous farmed gilthead sea bream (Sparus aurata). Frontiers in Veterinary Science 9, 1083255.

Gilthead sea bream is a highly cultured marine fish throughout the Mediterranean area, but new and strict criteria of welfare are needed to assure that the intensification of production has no negative effects on animal...

Johnson, J. 2023. A new strategy for animal research: Attending to dissent. Animals 13(9), 1491.

Increasingly, ethical concepts ordinarily reserved for the human research setting have been applied to nonhuman animals in research. This comes at the same time as concerns mount over challenges in translating the results of biomedical...

Kaiser, S., Korte, A., Wistuba, J. et al. 2023. Effects of castration and sterilization on baseline and response levels of cortisol—A case study in male guinea pigs. Frontiers in Veterinary Science 9, 1093157.

An uncontrolled reproduction of animals in human hands should be avoided. To meet this goal, animals are widely castrated, i.e., the gonads are completely removed. Since the gonads are the most important source of sex...

Khonmee, J., Brown, J. L., Pérez, A. L. et al. 2023. Effect of electroejaculation protocols on semen quality and concentrations of testosterone, cortisol, malondialdehyde, and creatine kinase in captive Bengal tigers. Animals 13(12), 1893.

The Bengal tiger (Panthera tigris tigris) is critically endangered, so assisted reproductive technologies, including artificial insemination, are important conservation tools. For wild and domestic felids, electroejaculation (EE) is the most common semen collection method, with...

Miller, L. J., Chinnadurai, S. K. 2023. Beyond the five freedoms: Animal welfare at modern zoological facilities. Animals 13(11), 1818.

The current manuscript highlights the aspects of an animal welfare program for a modern zoological facility. The program should be proactive to identify areas for continuous improvement as well as reactive to address any identified...

Morton, D. B. 2023. A model framework for the estimation of animal “suffering”: Its use in predicting and retrospectively assessing the impact of experiments on animals. Animals 13(5), 800.

This paper presents and illustrates, with a working example, a hypothesis for the assessment of ongoing severity before and during an experiment that will enable humane endpoints and intervention points to be applied accurately and...

Novák, J., Frynta, D., Nováková, D. et al. 2023. Social deprivation in maternal mouthbrooders Tropheus sp. “Caramba” (Teleostei: Cichlidae) decreases the success rate of reproduction and survival rate of fish fry. Scientific Reports 13(1), 8284.

Early offspring separation from mothers causes social deprivation. Mouthbrooding, when eggs and fry are incubated in the buccal cavity of the parent, is one of the reproductive strategies in fish. The mother is the incubating...

Peruga, M., Kawala, B., Sarul, M. et al. 2023. Are currently selected laboratory animals useful in the research of how female hormones influence orthodontic biomechanics? Animals 13(4), 629.

Animal testing was and remains the only method of introducing a certain treatment and medical procedure on humans. On the other hand, animals have their rights resulting from applicable legal acts, including Directive 2010/63/EU and...

Vickery, H. M., Neal, R. A., Stergiadis, S. et al. 2023. Gradually weaning goat kids may improve weight gains while reducing weaning stress and increasing creep feed intakes. Frontiers in Veterinary Science 10, 1200849.

Most dairy goat farms rear kids on ad libitum milk replacer; calf research suggests this improves growth and welfare, but solid feed intakes are problematic. Weaning can be gradual (incremental milk reduction) or abrupt (sudden...

Warwick, C., Pilny, A., Steedman, C. et al. 2023. Mobile zoos and other itinerant animal handling events: Current status and recommendations for future policies. Animals 13(2), 214.

Mobile zoos are events in which non-domesticated (exotic) and domesticated species are transported to venues such as schools, hospitals, parties, and community centres, for the purposes of education, entertainment, or social and therapeutic assistance. We...

Warwick, C., Steedman, C., Jessop, M. et al. 2023. Defining short-term accommodation for animals. Animals 13(4), 732.

The terms short-term, temporary, and transitional are related but can have different contexts and meanings for animal husbandry. The definitions and use of these terms can be pivotal to animal housing and welfare. We conducted...

Zare, M., Heidari, E., Hosseini Choupani, S. M. et al. 2023. The recovery time between early mild stress and final acute stress affects survival rate, immunity, health, and physiology of oscar (Astronotus ocellatus). Animals 13(10), 1606.

This study investigated how the time interval between the last EMS (netting) and the acute confinement stress (AC stress) at the end of the experiment can influence growth, haematology, blood biochemistry, immunological response, antioxidant system...

Waltz, M., Fisher, J. A., Walker, R. L. 2023. Mission creep or mission lapse? Scientific review in research oversight. AJOB Empirical Bioethics 14(1), 38-49.

Background: The ethical use both of human and non-human animals in research is predicated on the assumption that it is of a high quality and its projected benefits are more significant than the risks and...

O’Brien, S. L., Cronin, K. A. 2023. Doing better for understudied species: Evaluation and improvement of a species-general animal welfare assessment tool for zoos. Applied Animal Behaviour Science 264, 105965.

Accredited zoos and aquariums are required to have a welfare assessment process in place for the animals in their care. However, welfare assessment theoretical frameworks and methodologies vary widely. Previous studies have shown that taxonomic...

Dara, M., Carbonara, P., La Corte, C. et al. 2023. Fish welfare in aquaculture: Physiological and immunological activities for diets, social and spatial stress on Mediterranean aqua cultured species. Fishes 8(8), 414.

Welfare assessment currently is less well-characterized for aquatic animals and the classical methodologies used for terrestrial animals are not adequate to improve our knowledge about fish well-being. Among different approaches, the status of organism responses...

Alvarado, M. V., Felip, A., Espigares, F. et al. 2023. Unexpected appetitive events promote positive affective state in juvenile European sea bass. Scientific Reports 13(1), 22064.

Some animal species exhibit considerable physiological and behavioural alterations in response to captivity. It has been hypothesized, but rarely tested, that such changes reflect a negative affective state that is associated to this specific context...

da Santa Lopes, T., Costas, B., Ramos-Pinto, L. et al. 2023. Exploring the effects of acute stress exposure on lumpfish plasma and liver biomarkers. Animals 13(23), 3623.

This study aimed to expand knowledge on lumpfish stress physiology by investigating the effects of acute stress on primary (i.e., cortisol) and secondary (e.g., metabolites) stress responses, as well as oxidative stress biomarkers, from stress...

Dara, M., Carbonara, P., La Corte, C. et al. 2023. Fish welfare in aquaculture: Physiological and immunological activities for diets, social and spatial stress on mediterranean aqua cultured species. Fishes 8(8), 414.

Welfare assessment currently is less well-characterized for aquatic animals and the classical methodologies used for terrestrial animals are not adequate to improve our knowledge about fish well-being. Among different approaches, the status of organism responses...

De Vleeschauwer, S., Lambaerts, K., Hernot, S. et al. 2023. Severity classification of laboratory animal procedures in two Belgian academic institutions. Animals 13(16), 2581.

According to the EU Directive 2010/63, all animal procedures must be classified as non-recovery, mild, moderate or severe. Several examples are included in the Directive to help in severity classification. Since the implementation of the...

Enkelmann, A., Bischoff, S. J. 2023. CIRS-LAS – a novel approach to increase transparency in laboratory animal science for improving animal welfare by reducing laboratory animal distress. Frontiers in Veterinary Science 10.

The 3Rs principle is highly topical in animal-based research. These include, above all, new scientific methods for conducting experiments without an animal model, by using non-animal models (Replace), reducing the number of laboratory animals (Reduction)...

Goma, A. A., Uddin, J., Kieson, E. 2023. Lateralised behavioural responses in livestock to environmental stressors: Implications for using infrared thermography to assess welfare conditions. Animals 13(23), 3663.

Lateralised behavioural responses to environmental stressors have become more frequently used as indicators of social welfare in animals. These lateralised behavioural responses are under the control of asymmetrical brain functions as part of the primary...

Graham, J. C., Wong, L., Adedeji, A. O. et al. 2023. Fostering animal welfare and advancing 3Rs principles through the establishment of a 3Rsadvisory group. Animals 13(24), 3863.

Based on the current state of science, the use of animals remains essential in bringing safe and effective medicines to patients. Respect for laboratory animal welfare and the application of 3Rs principles (the replacement, reduction...

Littlewood, K. E., Heslop, M. V., Cobb, M. L. 2023. The agency domain and behavioral interactions: Assessing positive animal welfare using the Five Domains Model. Frontiers in Veterinary Science 10.