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. 
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...

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...

Janczarek, I., Stachurska, A., Wilk, I. et al. 2021. Horse preferences for insolation, shade or mist curtain in the paddock under heat conditions: Cardiac and behavioural response analysis. Animals 11(4), 933.

The horse’s welfare and, consequently, the emotional arousal may be connected with stressful environmental conditions. This study aimed to determine whether horses show behavioural or physiological symptoms of thermal discomfort and if their behaviour and...

Manteca Vilanova, X., Beaver, B., Uldahl, M. et al. 2021. Recommendations for ensuring good welfare of horses used for industrial blood, serum, or urine production. Animals 11(5), 1466.

Various pharmaceutical products have been derived from horse blood and urine for over a century. Production of biologics and therapeutics from these samples is a niche industry and often occurs in regions with little regulation...

Krueger, K., Esch, L., Farmer, K. et al. 2021. Basic needs in horses?—A literature review. Animals 11(6), 1798.

Every animal species has particular environmental requirements that are essential for its welfare, and when these so-called “basic needs” are not fulfilled, the animals suffer. The basic needs of horses have been claimed to be...

Mazzola, S. M., Colombani, C., Pizzamiglio, G. et al. 2021. Do you think I am living well? A four-season hair cortisol analysis on leisure horses in different housing and management conditions. Animals 11(7), 2141.

The satisfaction of leisure horses’ behavioral needs has begun to be considered a priority, linked to the awareness that horses kept in single boxes may be deprived of social contact and the possibility to perform...

Levina, A. D., Mikhailova, E. S., Kasumyan, A. O. 2021. Taste preferences and feeding behaviour in the facultative herbivorous fish, Nile tilapia Oreochromis niloticus. Journal of Fish Biology 98(5), 1385-1400.

Taste preferences in fishes are known mainly for carnivorous species, whereas herbivorous consumers were rarely used in such studies. The main goal of the present study was to evaluate the taste preferences in the herbivorous...

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...

Archer, C. 2021. Zebrafish water quality for laboratory animal technicians. Laboratory Animal Science Professional 9(4) (July/August), 11-13.

Zebrafish are an increasingly popular model organism in many aspects of animal research; however, some aspects of their husbandry needs are quite disparate from that which most lab animal technicians are trained. Possibly the most...

Kimm, S., Rauterberg, S. L., Bill, J. et al. 2021. Use of space, active and resting behaviour in fattening rabbits (Oryctolagus cuniculus) housed in a combi park system: A case study. Animal Welfare 30(4), 493-506.

In this case study, a housing system for rabbits (Oryctolagus cuniculus) was developed, complying with the new German Welfare Regulation, and evaluated on-farm with regard to the rabbits' behaviour during four fattening periods. The housing...

Hildebrandt, F., Büttner, K., Salau, J. et al. 2021. Area and resource utilization of group-housed horses in an active stable. Animals 11(10), 2777.

The aim of this study was to analyze the utilization of different stable areas of a total of 52 group-housed horses as well as their preferred stable parts and the use of resources. The study...

Lawrence, K., Sherwen, S. L., Larsen, H. 2021. Natural habitat design for zoo-housed elasmobranch and teleost fish species improves behavioural repertoire and space use in a visitor facing exhibit. Animals 11(10), 2979.

This study investigated the behaviour of two Elasmobranch species; Southern fiddler ray (Trygonorrhina dumerilii, n = 1) and Port Jackson shark (Heterodontus portusjacksoni, n = 4) and two teleost species; moonlighter (Tilodon sexfasciatus, n =...

Kjellberg, L., Yngvesson, J., Sassner, H. et al. 2021. Horses’ use of lying halls and time budget in relation to available lying area. Animals 11(11), 3214.

Sleep is crucial to horses’ wellbeing, and their lying time can vary according to such factors as climate, exercise, bedding, and housing. This study aimed to analyze behavior and time spent in lying halls of...

Prior, H., Blunt, H., Crossman, L. et al. 2021. Refining procedures within regulatory toxicology studies: Improving animal welfare and data. Animals 11(11), 3057.

During the development of potential new medicines or agrochemicals, an assessment of the safety profile to humans and environmental species is conducted using a range of different in silico and in vitro techniques in conjunction...

Mondin, C., Trestini, S., Trocino, A. et al. 2021. The economics of rabbit farming: A pilot study on the impact of different housing systems. Animals 11(11), 3040.

This research evaluates the economic sustainability of rabbit farms using different housing systems—bicellular (BI), conventional dual-purpose (DP) and enriched cages designed according to the World Rabbit Science Association guidelines (WRSA)—through a field-based study involving six...

Saraiva, J. L., Nogueirinha, M., Teodósio, R. et al. 2021. The effect of tank cover on welfare of farmed Nile tilapia. Applied Animal Behaviour Science 241, 105396.

Welfare in aquaculture is a pressing topic. One of the main measures to improve the life of farmed fish is implementing environmental enrichment, which can include the addition of structural covers to rearing tanks. Here...

Powell, C., von Keyserlingk, M. A. G., Franks, B. 2021. Tank cleaning temporarily increases stress and decreases affiliative behavior in zebrafish. Applied Animal Behaviour Science 242, 105414.

Small, tropical fish are popular companion animals and constitute a major proportion of the vertebrates used in scientific research, but little is known about how they are affected by routine husbandry practices. Manual tank cleanings...

Tatemoto, P., Serra, M. 2021. Low luminosity reduces agonistic behaviour of Nile tilapia. Journal of Applied Animal Welfare Science 24(4), 434-441.

In confrontations, many behaviors are based on visual information. To establish the importance of visual signals in the aggression of cichlid fish, we observed the behavior of groups in three juveniles of Nile tilapia (six...

Costantino, A., Fabrizio, E., Calvet, S. 2021. The role of climate control in monogastric animal farming: The effects on animal welfare, air emissions, productivity, health, and energy use. Applied Sciences 11(20), 9549.

In the last decades, an engineering process has deeply transformed livestock houses by introducing fine-tuned climate control systems to guarantee adequate indoor climate conditions needed to express the maximum genetic potential of animals and to...

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...

Baumgartner, M., Boisson, T., Erhard, M. et al. 2020. Common feeding practices pose a risk to the welfare of horses when kept on non-edible bedding. Animals 10(3), 411.

During the evolution of the horse, an extended period of feed intake, spread over the entire 24-h period, determined the horses’ behaviour and physiology. Horses will not interrupt their feed intake for more than 4...

Haddy, E., Burden, F., Proops, L. 2020. Shelter seeking behaviour of healthy donkeys and mules in a hot climate. Applied Animal Behaviour Science 222, 104898.

Exposure to environmental factors such as high temperatures and solar radiation levels present a welfare concern for many domestic equids. Understanding how these factors influence the shelter use of healthy equids can inform welfare guidelines...

Falomo, M. E., Gabai, G., Franchini, G. et al. 2020. Behavioral and hormonal effects of 2 weaning methods in trotter mares. Journal of Veterinary Behavior 35, 47-53.

Given the paucity of published data on the effects of artificial weaning on mares, the aim of the present study was to investigate the behavioral and hormonal effects of two different weaning methods in trotter...

Figueiredo, F., Aragão, C., Pinto, W. et al. 2020. Optimizing rearing and welfare in Senegalese sole (Solea senegalesensis) broodstock: Effect of ambient light intensity and handling time on stress response. Applied Animal Behaviour Science 222, 104880.

Broodstock rearing conditions and handling procedures should be optimized in aquaculture species in order to benefit fish welfare and guarantee optimal conditions for spawning. In teleosts, basal cortisol levels display daily rhythms, oscillating along the...

Hubert, J., Neo, Y. Y., Winter, H. V. et al. 2020. The role of ambient sound levels, signal-to-noise ratio, and stimulus pulse rate on behavioural disturbance of seabass in a net pen. Behavioural Processes 170, 103992.

Anthropogenic sources increasingly contribute to the underwater soundscape and this may negatively impact aquatic life, including fish. Anthropogenic sound may mask relevant sound, alter behaviour, physiology, and may lead to physical injury. Behavioural effect studies...