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. 
Wang, C., Yang, C., Zeng, Y. et al. 2023. GnRH-immunocastration: An alternative method for male animal surgical castration. Frontiers in Veterinary Science 10.
Brown, A. 2023. Aced it! Performing large volume survival bleeds in rabbits. Laboratory Animal Science Professional 11(3) (May/June), 44-46.

New Zealand White rabbits are commonly used for polyclonal antibody production, which can require collecting no more than 10% of total body weight every two weeks (approximately 20 ml of blood for a 4 kg...

Alvarez, L., Terrazas, A., Rojas, S. et al. 2023. Cortisol and pain-related behavior in hot-iron disbudded goat kids sedated with xylazine and locally infiltrated with lidocaine. Journal of Veterinary Behavior 63, 42–47.

Disbudding induces intense pain-related behavioral and physiological responses in goat kids. Using only regional anesthesia may not be effective in ameliorating these responses. We determined the effect of xylazine-sedation with or without regional infiltration of...

Bertani, S., Donadi, A., Franchi, J. et al. 2023. Blood microsampling in cynomolgus monkey and evaluation of plasma PK parameters in comparison to conventional sampling. Journal of Pharmacological and Toxicological Methods 123, 107298.

Microsampling, a reduced volume sampling method, has successfully gained attention at the International Conference on Harmonization (ICH) level and established benefits support its use in Toxicokinetic (TK) studies. These improved sampling techniques are less invasive...

Dubuc, J., Morrow, L. 2023. Open versus semi-closed castration in horses: Which technique results in fewer postoperative complications? Veterinary Record 192(2), 78–78.

There is currently no peer-reviewed evidence comparing the postoperative complications associated with open and semi-closed castration techniques in horses. Therefore, the choice of technique should be based on the client's understanding of the risks and...

Hanh, H. Q., Phuong, N. T., Tien, N. D. et al. 2023. Effects of stocking density in group cages on egg production, profitability, and aggressive pecking of hens. Journal of Applied Animal Welfare Science 26(3), 374–385.

There is an increasing concern about welfare issues related to battery cages, which are commonly used in Vietnam, and requires a modified cage that improves hen welfare while retaining its economic and management advantages. We...

Lelláková, M., Pavľak, A., Lešková, L. et al. 2023. Monitoring blinks and eyelid twitches in horses to assess stress during the samples collection process. Journal of Applied Animal Welfare Science 26(4), 530–539.

To assess stress in horses, a method of monitoring eye blinks (full and half) and eyelid twitches while collecting saliva and blood samples before and after annual intensive police training was carried out. This noninvasive...

Martin-Flores, M., Nugen, S. A., Boesch, J. M. et al. 2023. Low-dose epidural anesthesia decreases the use of intraoperative systemic analgesics in goats undergoing lower urinary tract surgery. Journal of the American Veterinary Medical Association 261(8), 1147–1151.

OBJECTIVE To test whether the use of low-dose epidural anesthesia (EA) in goats undergoing lower urinary tract surgery reduces the requirements of perioperative analgesics, contributes to intraoperative hypotension, and improves postoperative comfort during the first...

Psarou, E., Vezoli, J., Schölvinck, M. L. et al. 2023. Modular, cement-free, customized headpost and connector-chamber implants for macaques. Journal of Neuroscience Methods 393, 109899.

Background: Neurophysiological studies with awake macaques typically require chronic cranial implants. Headpost and connector-chamber implants are used to allow head stabilization and to house connectors of chronically implanted electrodes, respectively. New method: We present long-lasting...

Mocz, F., Michel, V., Janvrot, M. et al. 2022. Positive effects of elevated platforms and straw bales on the welfare of fast-growing broiler chickens reared at two different stocking densities. Animals 12(5), 542.

In conventional rearing systems, fast-growing broiler chickens commonly experience welfare issues, such as contact dermatitis, walking difficulties or a lack of expression of species-specific behaviours. Enriching their environment may be a way to improve their...

Baker, P. E., Nicol, C. J., Weeks, C. A. 2022. The effect of hard pecking enrichment during rear on feather cover, feather pecking behaviour and beak length in beak-trimmed and intact-beak laying hen pullets. Animals 12(6), 674.

Injurious pecking, commonly controlled by beak trimming (BT), is a widespread issue in laying hens associated with thwarted foraging. This controlled study compared the effect in intact and beak-trimmed pullets of providing pecking pans to...

Gilberto, D., Michener, M., Smith, B. et al. 2022. Chronic collection of cerebrospinal fluid from rhesus macaques (Macaca mulatta) with cisterna magna ports: Update on refinements. Comparative Medicine 72(1), 45-49.

More than 20 y ago, we developed an animal model for chronic and continuous collection of cerebrospinal fluid (CSF) from conscious rhesus macaques. Since our previous publication in 2003, we have successfully implanted 168 rhesus...

Nicolis, I. N., Beale, C. N., Bidot, W. A. et al. 2022. Performance and consistency of circulating warm water blankets for rodents. JAALAS 61(1), 96-100.

General anesthesia as used for rodent research can have adverse effects on physiologic mechanisms. Thermoregulation is often greatly inhibited, with resultant deleterious effects on cardiac and respiratory function. These potential effects can be mitigated by...

Buckmaster, C. L., Levesque, D., LaFollette, M. et al. 2022. Five hot topics in refinement of nonhuman primate neuroscience research. Laboratory Animal Science Professional 10(1) (January/February), 24-26.

Members of the North American 3Rs Collaborative (NA3RsC) refinement initiative have chosen to summarize developments in five hot topics of interest: 1. Tips for welfare-friendly transport, chairing, and restraint; 2. Guidance on refining food and...

Guerrero-Martin, S. M., Brill, S., Carlson, B. W. 2022. Development and implementation of a positive reinforcement training program for nonhuman primates in biomedical research. Laboratory Animal Science Professional 10(1) (January/February), 48-52.

Despite clear benefits of PRT for NHPs and biomedical research, investigators often view the investment in personnel expertise and time required to train animals as deterrents towards adopting PRT. We provide an example of how...

Schilling, A.-K., Mazzamuto, M. V., Romeo, C. 2022. A review of non-invasive sampling in wildlife disease and health research: What’s new? Animals 12(13), 1719.

In the last decades, wildlife diseases and the health status of animal populations have gained increasing attention from the scientific community as part of a One Health framework. Furthermore, the need for non-invasive sampling methods...

Torcivia, C., McDonnell, S. 2022. Efficacy of lidocaine topical solution in reducing discomfort reaction of horses to intramuscular vaccination. Animals 12(13), 1659.

Vaccinations via intramuscular injection are a key component of preventative health care in horses. Development of problematic behavioral aversion to injections is quite common. Our clinical impression has been that topical anesthetic applied to injection...

Bethell, E. J., Khan, W., Hussain, A. 2022. A deep transfer learning model for head pose estimation in rhesus macaques during cognitive tasks: Towards a nonrestraint noninvasive 3Rs approach. Applied Animal Behaviour Science 255, 105708.

Head orientation is a measure of attention used in behavioral psychological research with non-human primates. It is used across a broad range of disciplines and settings, from the field to the laboratory. Field methods are...

LeFors, J. E., Anderson, L. M., Hanson, M. A. et al. 2022. Assessment of 2 hair removal methods in New Zealand white rabbits (Oryctolagus cuniculus). JAALAS 61(3), 296-303.

Rabbits are frequently used as surgical models in research. However, studies assessing the effects of various hair removal methods on wound healing and surgical site infection (SSI) in rabbits are sparse. Here we evaluated the...

Schoiswohl, J., Stanitznig, A., Smetanig, C. et al. 2022. Comparison of alternative methods for thermal disbudding in calves. Journal of Veterinary Behavior 51, 35-42.

Calves are frequently disbudded to reduce the number of injuries due to horns to other animals and farm workers. The most commonly used method is thermal disbudding which is increasingly causing animal welfare concerns (Stafford...

Jacob, G., Katti, H., Cherian, T. et al. 2021. A naturalistic environment to study visual cognition in unrestrained monkeys. eLife 10, e63816.

Macaque monkeys are widely used to study vision. In the traditional approach, monkeys are brought into a lab to perform visual tasks while they are restrained to obtain stable eye tracking and neural recordings. Here...

Bučková, K., Moravcsíková, Á., Šárová, R. et al. 2022. Indication of social buffering in disbudded calves. Scientific Reports 12(1), 13348.

Most dairy calves are housed individually in early ontogeny but social housing has positive effects on calf welfare including an advantage of social buffering, i.e., when negative effects of stress are mitigated through social support...

Charbonneau, J. A., Amaral, D. G. Bliss-Moreau, E. 2022. Social housing status impacts rhesus monkeys’ affective responding in classic threat processing tasks. Scientific Reports 12(1), 4140.

Individuals’ social contexts are broadly recognized to impact both their psychology and neurobiology. These effects are observed in people and in nonhuman animals who are the subjects for comparative and translational science. The social contexts...

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...

Chen, Y.-A., Chen, J.-Y., Chen, W.-Q. et al. 2022. Effects of castration age on the growth performance of Nubian crossbred male goats. Animals 12(24), 3516.

To determine the optimal timing for performing castration on goats, eighteen male Nubian crossbred goats were randomly assigned to two groups and castrated at 3 months and 6 months of age, respectively. Daily dry matter...