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. 
Stomp, M., Leroux, M., Cellier, M. et al. 2018. An unexpected acoustic indicator of positive emotions in horses. PLOS ONE 13(7), e0197898.

Indicators of positive emotions are still scarce and many proposed behavioural markers have proven ambiguous. Studies established a link between acoustic signals and emitter’s internal state, but few related to positive emotions and still fewer...

Anderson, J. H., Taggart, N. W., Edgerton, S. L. et al. 2018. Ultrasound guided percutaneous common carotid artery access in piglets for intracoronary stem cell infusion. Laboratory Animals 52(1), 88-92.

In pigs, the deep location of the common carotid artery and overlying sternomastoideus muscle in the neck has led to the recommendation for a surgical cutdown for common carotid access, as opposed to minimally invasive...

Maigrot, A., Hillmann, E., Briefer, E. 2018. Encoding of emotional valence in wild boar (Sus scrofa) calls. Animals 8(6), 85.

Measuring emotions in nonhuman mammals is challenging. As animals are not able to verbally report how they feel, we need to find reliable indicators to assess their emotional state. Emotions can be described using two...

Backus, B. L., McGlone, J. J. 2018. Evaluating environmental enrichment as a method to alleviate pain after castration and tail docking in pigs. Applied Animal Behaviour Science 204, 37-42.

Castration and tail docking are common management practices performed on commercial swine farms in the US and around the world to reduce adverse behaviors and the occurrence of boar taint. However, these practices themselves are...

Norton, T., Piette, D., Exadaktylos, V. et al. 2018. Automated real-time stress monitoring of police horses using wearable technology. Applied Animal Behaviour Science 198, 67-74.

Mounted police horses and riders are repeatedly subjected to demanding and stressful situations. Intensive selection and training of police horses is required to ensure performance, safety and welfare of the horses and their riders. At...

Ijichi, C., Tunstall, S., Putt, E. et al. 2018. Dually Noted: The effects of a pressure headcollar on compliance, discomfort and stress in horses during handling. Applied Animal Behaviour Science 205, 68-73.

Horse handlers often encounter problem behaviour resulting from a lack of stimulus control. Handlers are often only 15% of the weight of horses, which evolved strong flight responses. Therefore, many riders and handlers resort to...

Wolfe, A. M., Rahman, M., McFadden, D. G. et al. 2018. Refinement and successful implementation of a scoring system for myxomatosis in a susceptible rabbit (Oryctolagus cuniculus) model. Comparative Medicine 68(4), 280–285.

Myxoma virus is a member of Leporipoxviridae whose tropism is tightly restricted to lagomorphs. In susceptible Oryctolagus rabbits, the virus causes a highly lethal disease known as myxomatosis, which begins as a localized infection but...

Pluschke, A. M., Simmons, G. S., Keates, H. L. et al. 2017. An updated method for the jugular catheterization of grower pigs for repeated blood sampling following an oral glucose tolerance test. Laboratory Animals 51(4), 397-404.

Jugular catheterization is a common procedure used under experimental conditions. However, there is considerable variation in the reported techniques, particularly for grower pigs (>40 kg and 10 mL) are required. This paper provides a complete...

Miranda, A., Pego, J. M., Correia-Pinto, J. 2017. Animal facility videoendoscopic intubation station: Tips and tricks from mice to rabbits. Laboratory Animals 51(2), 204-207.

Endotracheal intubation of laboratory animals is a common procedure shared by several research fields for different purposes, such as mechanical ventilation of anaesthetized animals, instillation of cytotoxic nanoparticles, infectious agents or tumour cells for induction...

Nordquist, R., van der Staay, F., van Eerdenburg, F. et al. 2017. Mutilating procedures, management practices, and housing conditions that may affect the welfare of farm animals: Implications for welfare research. Animals 7(2), 12.

A number of mutilating procedures, such as dehorning in cattle and goats and beak trimming in laying hens, are common in farm animal husbandry systems in an attempt to prevent or solve problems, such as...

Leliveld, L. M. C., Düpjan, S., Tuchscherer, A. et al. 2017. Vocal correlates of emotional reactivity within and across contexts in domestic pigs (Sus scrofa). Physiology & Behavior 181, 117-126.

Vocalizations have long been recognized to encode information about an individual's emotional state and, as such, have contributed to the study of emotions in animals. However, the potential of vocalizations to also encode information about...

Vullo, C., Carluccio, A., Robbe, D. et al. 2017. Guaiphenesin-ketamine-xylazine infusion to maintain anesthesia in mules undergoing field castration. Acta Veterinaria Scandinavica 59(1), 67.

In order to determine whether a combination of guaiphenesin, ketamine and xylazine can induce safe and satisfactory anaesthesia in mules undergoing field castration, eight healthy adult intact male mules were employed. They were premedicated with...

Sutherland, M. A., Backus, B. L., Brooks, T. A. 2017. The effect of needle-free administration of local anesthetic on the behavior and physiology of castrated pigs. Journal of Veterinary Behavior 21, 71-76.

Pigs are routinely castrated in many countries without giving pain relief, which is an animal welfare concern. The objectives of this study were to evaluate the stress caused by administering local anesthetic (LA) using a...

Ali, A. B. A., Gutwein, K. L., Heleski, C. R. 2017. Assessing the influence of upper lip twitching in naive horses during an aversive husbandry procedure (ear clipping). Journal of Veterinary Behavior 21, 20-25.

When engaging in procedures that horses may find aversive, restraint methods are often used to help ensure safety of both horse and handler. Twitching is a common restraint method, but its use is sometimes considered...

Gabriel, S. M., Riley, K. M., Spinks, W. A. et al. 2017. Husbandry, care and enrichment of diabetic Sinclair swine in the laboratory environment. Laboratory Animal Science Professional 5(3) (September), 53-57.

Health monitoring, enrichment, training procedures and techniques, as well as instructions for the care of vascular access ports, are outlined in this paper. The procedures described herein helped maintain a successful, long-term research population of...

Hothersall, B., Whistance, L., Zedlacher, H. et al. 2016. Standardising the assessment of environmental enrichment and tail-docking legal requirements for finishing pigs in Europe. Animal Welfare 25(4), 499-515.

An online training package providing a concise synthesis of the scientific data underpinning EU legislation on enrichment and tail-docking of pigs was produced in seven languages, with the aim of improving consistency of professional judgements...

Wallgren, T., Westing, R., Gunnarsson, S. 2016. A survey of straw use and tail biting in Swedish pig farms rearing undocked pigs. Acta Veterinaria Scandinavica 58(1), 84.

Tail biting is a common problem in intensive pig farming, affecting both welfare and production. Although routine tail docking is banned within the EU, it remains a common practice to prevent tail biting. Straw as...

Prior, H., Bottomly, A., Champéroux, P. et al. 2016. Social housing of non-rodents during cardiovascular recordings in safety pharmacology and toxicology studies. Journal of Pharmacological and Toxicological Methods 81, 75-87.

Introduction: The Safety Pharmacology Society (SPS) and National Centre for the Replacement, Refinement & Reduction of Animals in Research (NC3Rs) conducted a survey and workshop in 2015 to define current industry practices relating to housing...

Lesimple, C., Fureix, C., Aube, L. et al. 2016. Detecting and measuring back disorders in nonverbal individuals: The example of domestic horses. Animal Behavior and Cognition 3(3), 159–179.

Back disorders are amongst the major health-related disorders associated to working conditions in our society. Horses share with humans the exposure to potential physically harmful working conditions leading to back disorders. However, despite their high...

Holinger, M., Fruh, B., Hillmann, E. 2015. Group composition for fattening entire male pigs under enriched housing conditions - Influences on behaviour, injuries and boar taint compounds. Applied Animal Behaviour Science 165, 47-56.

In organic farming, the production of pork from entire male pigs seems to be the most promising alternative to castration, as organic animal husbandry aims at high standards of animal welfare and elimination of mutilations...

Turner, P. V., Viscardi, A., Lawli, P. et al. 2014. Evaluation of analgesic efficacy in piglets using a novel pig grimace scale. American Association for Laboratory Animal Science [AALAS] Meeting Official Program, 530 (Abstract #PS12).

There is a critical lack of information surrounding methods to improve the wellbeing of piglets undergoing painful procedures. It is not uncommon for piglets to undergo potentially painful procedures without anesthesia or analgesia, particularly for...

Hawkins, P. 2014. Refining housing, husbandry and care for animals used in studies involving biotelemetry. Animals 4(2), 361-373.

Biotelemetry can contribute towards reducing animal numbers and suffering in disciplines including physiology, pharmacology and behavioural research. However, the technique can also cause harm to animals, making biotelemetry a ‘refinement that needs refining’. Current welfare...

Reinhardt, V. (ed.) 2013. Compassion Makes a Difference - Discussions by the Laboratory Animal Refinement & Enrichment Forum [LAREF], Volume III. Animal Welfare Institute, Washington, DC.

This is the third volume of discussions that took place on the Laboratory Animal Refinement & Enrichment Forum (LAREF). This forum is dedicated to the exchange of personal experiences of refining the conditions under which...

Tallet, C., Brilloueet, A., Meunier-Salauuen, M. et al. 2013. Effects of neonatal castration on social behaviour, human-animal relationship and feeding activity in finishing pigs reared in a conventional or an enriched environment. Applied Animal Behaviour Science 145(3-4), 70-83.

Raising entire males is already common in a few European countries. It has the advantage of avoiding the pain of castration. Entire males have also a better food conversion. However, they would be more aggressive...

Hawkins, P., Burn, C., Hurst, J. et al. 2011. Report of the 2010 RSPCA/UFAW rodent welfare group meeting - The effect of husbandry on welfare and promoting good practice. Animal Technology and Welfare 10(2), 105-114.

The RSPCA/UFAW Rodent Welfare Group holds a one-day meeting every autumn so that its members can discuss current welfare research, exchange views on rodent welfare issues and share experiences of the implementation of the 3Rs...