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. 
Buenhombre, J., Daza-Cardona, E. A., Sousa, P. et al. 2023. Structural environmental enrichment and the way it is offered influence cognitive judgement bias and anxiety-like behaviours in zebrafish. Animal Cognition 26, 563–577.

Environmental enrichment in zebrafish generally reduces anxiety-related behaviours, improves learning in maze trials and increases health and biological fitness. However, certain types of enrichment or certain conditions induce the opposite effects. Therefore, it is essential...

Machado, M., Freitas Silveira, R. M., Machado Bittar, C. M. et al. 2023. Can the emotional state of calves be noticed by their facial expression and heart rate? Applied Animal Behaviour Science 260, 105874.

The aim of this study was to identify whether or not dairy calves change their facial expression and heart rate according to their emotional state when subjected to a stroking or umbrella stimulus. Thirty-two mixed-breed...

Buijs, S., Weller, J., Budan, A. 2023. When the measurement affects the object – Impact of a multi-part head/neck mounted wearable device on dairy cow behaviour, health and productivity. Applied Animal Behaviour Science 263, 105937.

Wearable technology is increasingly used in both dairy research and commercial dairy farming. Assessment of how such wearables affect cows is of major importance to rule out reductions in welfare and productivity that would hamper...

Ninomiya, S., Goto, Y., Huricha et al. 2023. Lying posture as a behavioural indicator of heat stress in dairy cows. Applied Animal Behaviour Science 265, 105981.

Dairy cows tend to stand as a heat stress response, but the increased tendency to stand adversely affects their productivity and welfare. Thus, taking measures against heat stress before cows spend more time standing is...

Pons, M. V., Adrien, M. L., Mattiauda, D. A. et al. 2023. Welfare of dairy cows in mixed feeding systems under two different conditions of confinement: Behavioral, biochemical and physiological indicators. Applied Animal Behaviour Science 265, 105995.

High production pasture-based dairy systems have difficulty meeting cows' nutritional and environmental needs, especially during extreme environmental conditions during summer in temperate zones. The mixed systems combine pasture access with supplementation periods to achieve the...

Alef, R., Blaser, R. E. 2023. Social group during housing and testing modulates the effect of ethanol on zebrafish (Danio rerio) behavior. Behavioural Processes 209, 104877.

Zebrafish (Danio rerio) are a popular model organism in behavioral pharmacology research due to many genetic and neurological similarities with humans. As a social species, the presence (or absence) of conspecifics during housing and testing...

Fontana, B. D., Alnassar, N., Parker, M. O. 2023. Transgenerational effects of early-life stress on anxiety behavior in zebrafish (Danio rerio). Behavioural Processes 208, 104874.

Early-life adversity impacts on anxiety-related behaviors in adulthood. The effects of such adversity not only affect the animal itself, but can be passed on transgenerationally. Pervasive effects of experimentally-induced early-life stress (ELS) have been documented...

Silva, P. F., Garcia de Leaniz, C., Freire, F. A. M. et al. 2023. Different housing conditions for zebrafish: What are the effects? Behavioural Processes 209, 104886.

Zebrafish is a popular experimental model in several research areas but little is known about the effects of using different strains or housing conditions. Poor control of genetic background and housing conditions could affect experimental...

Buenhombre, J., Daza-Cardona, E. A., Sousa, P. et al. 2023. Structural environmental enrichment and the way it is offered influence cognitive judgement bias and anxiety-like behaviours in zebrafish. Animal Cognition 26(2), 563–577.

Environmental enrichment in zebrafish generally reduces anxiety-related behaviours, improves learning in maze trials and increases health and biological fitness. However, certain types of enrichment or certain conditions induce the opposite effects. Therefore, it is essential...

Mair, A., Dadda, M., Kitaoka, A. et al. 2023. Illu-shoal choice: An exploration of different means for enrichment of captive zebrafish. Animals 13(16), 2640.

Fish of any variety are nowadays being kept captive for several purposes, from recreational to alimentary to research. It is possible that we humans often underestimate or misunderstand the basic, natural needs of the species...

Smith, S. A. 2023. Fish welfare in public aquariums and zoological collections. Animals 13(16), 2548.

A wide variety of fish species have been displayed in public aquariums and zoological collections for over 150 years. Though the issue of pain perception in fish is still being debated, there is no disagreement...

Mainau, E., Llonch, P., Temple, D. et al. 2022. Alteration in activity patterns of cows as a result of pain due to health conditions. Animals 12(2), 176.

The main conditions and diseases considered painful in dairy cows are mastitis, lameness, calving (including dystocia and caesarean section) and metritis. The cattle literature reports that deviation from normal daily activity patterns (both increased and/or...

Acharya, R. Y., Hemsworth, P. H., Coleman, G. J. et al. 2022. The animal-human interface in farm animal production: Animal fear, stress, reproduction and welfare. Animals 12(4), 487.

A negative human-animal relationship (HAR) from the perspective of the animal is a limiting factor affecting farm animal welfare, as well as farm animal productivity. Research in farm animals has elucidated sequential relationships between stockperson...

Rowe, E., Mullan, S. 2022. Advancing a “good life” for farm animals: Development of resource tier frameworks for on-farm assessment of positive welfare for beef cattle, broiler chicken and pigs. Animals 12(5), 565.

There is increasing recognition that farm animal welfare standards should ensure positive welfare, as well as prevent negative welfare. Resources that are valued by an animal and that provide opportunities to engage in motivated behaviours...

Celozzi, S., Battini, M., Prato-Previde, E. et al. 2022. Humans and goats: Improving knowledge for a better relationship. Animals 12(6), 774.

There is consensus that the quality of the human–animal relationship (HAR) is relevant to guarantee appropriate levels of animal welfare. Given the impact that HAR may have on both goats and human beings, the aim...

Lindner, E. E., Gingerich, K. N., Burke, K. C. et al. 2022. Effects of social housing on dairy calf social bonding. Animals 12(7), 821.

Social housing for dairy calves has a range of benefits for social development, yet there is limited understanding of how social bonds form early in life. We characterized effects of early life social contact on...

Reyes, F. S., Gimenez, A. R., Anderson, K. M. et al. 2022. Impact of stationary brush quantity on brush use in group-housed dairy heifers. Animals 12(8), 972.

Our objectives were to evaluate the effect of stationary brush quantity on brush use and competition in weaned dairy heifers naïve to brushes. Sixty-three Holstein heifers (95 ± 5.7 days old) were housed in groups...

Gatto, E., Bruzzone, M., Dal Maschio, M. et al. 2022. Effects of environmental enrichment on recognition memory in zebrafish larvae. Applied Animal Behaviour Science 247, 105552.

Zebrafish (Danio rerio) constitute a useful model for studying memory function and impairment in vertebrates and are now widely used in translational research. On the one hand, the adoption of simple, fast and reliable tests...

Zhang, C., Juniper, D. T., Meagher, R. K. 2022. Effects of physical enrichment and pair housing before weaning on growth, behaviour and cognitive ability of calves after weaning and regrouping. Applied Animal Behaviour Science 249, 105606.

Housing unweaned calves individually in barren environments negatively affects their growth, cognitive ability, and adaptability to environmental changes in later life. Social housing has been shown to improve those aspects, whereas physical environmental enrichment has...

Leyden, C., Brüggemann, T., Debinski, F. et al. 2022. Efficacy of tricaine (MS-222) and hypothermia as anesthetic agents for blocking sensorimotor responses in larval zebrafish. Frontiers in Veterinary Science 9, 864573.

Tricaine, or MS-222, is the most commonly used chemical anesthetic in zebrafish research. It is thought to act via blocking voltage-gated sodium channels, though its mechanism of action, particularly at the neuronal level, is not...

Stephenson, E., Haskell, M. J. 2022. The use of a “go/go” cognitive bias task and response to a novel object to assess the effect of housing enrichment in sheep (Ovis aries). Journal of Applied Animal Welfare Science 25(1), 62-74.

It is widely acknowledged that environmental enrichment can improve animals’ welfare and emotional state. This study used cognitive bias and response to a novel object to assess the effect of enriched housing on emotional state...

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...

Midttun, H., Øverli, Ø., Tudorache, C. et al. 2022. Non-invasive sampling of water-borne hormones demonstrates individual consistency of the cortisol response to stress in laboratory zebrafish (Danio rerio). Scientific Reports 12(1) 6278.

Glucocorticoid (GC) stress hormones are well-known for their impact on phenotypic traits ranging from immune function to behaviour and cognition. For that reason, consistent aspects of an individual’s physiological stress response (i.e. GC responsiveness) can...

Ahmadi, F., Ghasemi, E., Alikhani, M. et al. 2022. Effects of group housing and incremental hay supplementation in calf starters at different ages on growth performance, behavior, and health. Scientific Reports 12(1), 3190.

The present study examined the effects of age at group housing and age at incremental hay supplementation in calf starters from 7.5 to 15% (dry matter, DM) and their interaction on growth performance, behavior, health...

Thompson, J. S., Hudson, C. D., Huxley, J. N. et al. 2022. A randomised controlled trial to evaluate the impact of indoor living space on dairy cow production, reproduction and behaviour. Scientific Reports 12(1), 3849.

As a global society, we have a duty to provide suitable care and conditions for farmed livestock to protect animal welfare and ensure the sustainability of our food supply. The suitability and biological impacts of...