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. 
Ramos, J., Balasch, J. C., Tort, L. 2021. About welfare and stress in the early stages of fish. Frontiers in Veterinary Science 8, 634434.

In conclusion, the investigations carried out up to now demonstrate that during the early stages fish show high sensitivity to many types of stressors involving an array of responses to overcome alterations that could affect...

Zigo, F., Vasil', M., Ondrašovičová, S. et al. 2021. Maintaining optimal mammary gland health and prevention of mastitis. Frontiers in Veterinary Science 8, 607311.

In dairy industry, quality of produced milk must be more important than quantity without a high somatic cells count (SCC) or pathogens causing mastitis of dairy cows and consumer diseases. Preserving the good health of...

Corbani, T. L., Martin, J. E., Healy, S. D. 2021. The impact of acute loud noise on the behavior of laboratory birds. Frontiers in Veterinary Science 7, 607632.

Husbandry procedures and facility settings, such as low-frequency fire alarms, can produce noises in a laboratory environment that cause stress to animals used in research. However, most of the data demonstrating harmful effects that have...

Petek, M.,Çavuşoğlu, E. 2021. Welfare assessment of two free-range laying hen flocks in Turkey. Journal of Applied Animal Welfare Science 24(1), 56-63.

This study aimed to determine the prevalence of keel bone deviations and feather damage of laying hens in two different free-range housing systems under commercial conditions. Both of the free-range systems had an indoor barn...

Iyasere, O. S., Bateson, M., Beard, A. P. et al. 2021. Provision of additional cup drinkers mildly alleviated moderate heat stress conditions in broiler chickens. Journal of Applied Animal Welfare Science 24(2), 188-199.

Sixty-four broilers of a commercial strain in a 2 × 2 factorial design with two environmental conditions: normal (N; 20°C, 50% RH) or MHS (30°C, 70% RH for 6 h/day for 3 consecutive days), and...

Crump, A., Jenkins, K., Bethell, E. J. et al. 2021. Optimism and pasture access in dairy cows. Scientific Reports 11(1), 4882.

Allowing dairy cattle to access pasture can promote natural behaviour and improve their health. However, the psychological benefits are poorly understood. We compared a cognitive indicator of emotion in cattle either with or without pasture...

Lowe, G. L., Sutherland, M. A., Waas, J. R. et al. 2021. Effect of milk allowance on the suitability of automated behavioural and physiological measures as early disease indicators in calves. Applied Animal Behaviour Science 234, 105202.

This study investigated the effect of milk allowance on the suitability of behavioural and physiological responses, individually and in combination, as early disease indicators. A total of 120 heifer calves were assigned into a 5...

Bica, G. S., Pinheiro Machado Filho, L. C., Teixeira, D. L. 2021. Beef cattle on pasture have better performance when supplied with water trough than pond. Frontiers in Veterinary Science 8, 616904.

The behavior and performance of steers on pasture regarding water availability in troughs or in ponds were compared. Eight paddocks were randomly allocated to one treatment: POND (~30 m of diameter) or TROUGH (water trough...

Coleman, K., Shapiro, S. J. (Eds.). 2021. Behavioral Biology of Laboratory Animals (1st ed). CRC Press, Boca Raton, FL.

This 30-chapter volume informs students and professionals about the behavioral biology of animals commonly housed in laboratory and other captive settings. Each species evolved under specific environmental conditions, resulting in unique behavioral patterns, many of...

Sørensen, D., Cloutier, S., Gaskill, B. (Eds.). 2021. Animal-centric Care and Management - Enhancing Refinement in Biomedical Research. CRC Press, Boca Raton, FL.

The concept of the 3Rs (Refinement, Reduction and Replacement) has been used as a framework for improving the welfare of laboratory animals for the last half century. By establishing an animal-centric view on housing and...

Rácz, A., Adorján, G., Fodor, E. et al. 2021. Housing, husbandry and welfare of a “classic” fish model, the paradise fish (Macropodus opercularis). Animals 11(3), 786.

Thanks to its small size, external fertilization and fecundity, over the past four decades, zebrafish (Danio rerio) has become the dominant fish model species in biological and biomedical research. Multiple lines of evidence, however, suggest...

Adler, C., Schmithausen, A. J., Trimborn, M. et al. 2021. Effects of a partially perforated flooring system on ammonia emissions in broiler housing—Conflict of objectives between animal welfare and environment? Animals 11(3), 707.

A partially (50%) perforated flooring system showed positive effects on health- and behavior-based welfare indicators without affecting production performance. Ammonia (NH3) is the most common air pollutant in poultry production, with effects on animal welfare...

Phillips, H. N., Heins, B. J. 2021. Effects of outdoor stocking density on growth, feather damage and behavior of slow-growing free-range broilers. Animals 11(3), 688.

Access to pasture is a main benefit of free-range broiler housing systems, yet the level of outdoor stocking density on broiler animal welfare remains unsettled. The growth, feather damage, pasture ranging and behaviors were assessed...

Saiz, N., Gómez-Boronat, M., De Pedro, N. et al. 2021. The lack of light-dark and feeding-fasting cycles alters temporal events in the goldfish (Carassius auratus) stress axis. Animals 11(3), 669.

Vertebrates possess circadian clocks, driven by transcriptional–translational loops of clock genes, to orchestrate anticipatory physiological adaptations to cyclic environmental changes. This work aims to investigate how the absence of a light-dark cycle and a feeding...

Wichman, A., De Groot, R., Håstad, O. et al. 2021. Influence of different light spectrums on behaviour and welfare in laying hens. Animals 11(4), 924.

Artificial commercial lighting used in animal production facilities can have negative influences on visual abilities, behaviour and welfare of domestic fowl. This study examined the effects of natural-derived light spectrums on behaviour, production and welfare...

Sandilands, V., Baker, L., Donbavand, J. et al. 2021. Effects of different scratch mat designs on hen behaviour and eggs laid in enriched cages. Animals 11(6), 1544.

Laying hens in the UK and EU must be provided with litter for pecking and scratching. In enriched cages, this is commonly provided by dispensing layer’s feed onto a scratch mat. Mats vary in design...

Li, P., Cai, A., Descovich, K. et al. 2021. A comparison of rice husks and peanut shells as bedding materials on dairy cows’ preferences, behaviour, and health. Animals 11(7), 1887.

The provision and quality of bedding materials affect the behaviour, welfare, and health of dairy cows. The objective of this study was to evaluate the preference, behaviour, cleanliness, and physiological status of cows on three...

Sobte, H. F. M., Buijs, S. 2021. Impact of paper bedding on lying behaviour and welfare in lactating dairy cows. Applied Animal Behaviour Science 239, 105321.

Lying is a highly motivated behaviour in dairy cows. The level of comfort provided by the lying surface not only affects lying time, but can also affect several other aspects of welfare. We used a...

Hart, A., Reynolds, Z., Troxell-Smith, S. 2021. Using individual-specific conditioning to reduce stereotypic behaviours: A study on smooth dogfish Mustelus canis in captivity. Journal of Zoo and Aquarium Research, 9(3), 193-199.

Despite how frequently stereotypic behaviours are discussed in the field of animal behaviour and welfare, research on stereotypies in captive elasmobranchs is far less represented in the literature compared to studies on mammalian species. This...

FELASA Working Group on Farm Animals: Berset, C. M., Caristo, M. E., Ferrara, F. et al. 2021. Federation of European Laboratory Animal Science Associations recommendations of best practices for the health management of ruminants and pigs used for scientific and educational purposes. Laboratory Animals 55(2), 117-128.

Most ruminants and pigs used for scientific and educational aims are bred not for these purposes but in a farm environment. Given the wide range of diseases that these species might have, ensuring that the...

Jewell, D., Muensch, A., Kupronis, R. et al. 2021. Husbandry techniques for a research colony of veiled chameleons (Chamaeleo calyptratus). Laboratory Animal Science Professional 9(4) (July/August), 52-55.

Although most chameleon species can be challenging captives, C. calyptratus have been successfully kept and bred in captivity for over thirty years. Despite their relative familiarity, our challenge is to replicate their preferred habitats in...

Lemes, A. P., Garcia, A. R., Pezzopane, J. et al. 2021. Silvopastoral system is an alternative to improve animal welfare and productive performance in meat production systems. Scientific Reports 11(1), 14092.

Climate change is a reality and global surface temperature is projected to rise substantially in the next 80 years. Agriculture practices will have to adapt to climate change, and also help to mitigate this effect...

Norman, K. I., Weeks, C. A., Tarlton, J. F. 2021. Rearing experience with ramps improves specific learning and behaviour and welfare on a commercial laying farm. Scientific Reports 11(1), 8860.

To access resources in commercial laying houses hens must move between levels with agility to avoid injury. This study considered whether providing ramps during rear improved the ability of birds to transition between levels. Twelve...

Diarra, S., Lameta, S., Amosa, F. et al. 2021. Alternative bedding materials for poultry: Availability, efficacy, and major constraints. Frontiers in Veterinary Science 8, 669504.

The increasing demand of wood shavings (WS) and sawdust (SD) by other industries and growing concerns of potential chemical contaminants from wood products have amplified research interest in alternative bedding materials for commercial poultry. Several...

Schmidt, T., Ferrara, F., Pobloth, A.-M. et al. 2021. Large farm animals used for research purposes: A survey on purchase, housing and hygiene management. Animals 11(8), 2158.

Background: Farm animals (FAs) are frequently used in biomedical research. Recommendations for the purchase, housing and health monitoring of these animals (sheep, goats, cattle and pigs) are still missing, and many institutes have developed their...