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. 

The three [single-caged, socially deprived] male subjects represented examples of severely disturbed animals as witnessed by rates of stereotyped behavior (self-aggression, stereotyped locomotion). The problem under investigation involved the extent to which social group experience...

Study of 14 of these monkeys throughout a longer period of 8 weeks of chair restraint indicated that ... mean BEI [butanol extractable iodine] levels remained significantly elevated through the third week. ... Acute emotional...

These experiments indicate clearly that placement in the restraining chair represents a potent stimulus to the pituitary-adrenal cortical system. Animals who were restrained in an unfamiliar environment showed significantly higher urinary cortisol levels than animals...

Assessed the effects of exposure to an enriched environment, from birth-38 days of age, using 3 behavioral tests: open field, exploration, and running wheels. 144 inbred mice from 3 strains (A/J, C3H/HeJ, and C57BL/10J) were...

Barbering is a common abnormal behavior in laboratory mice. Alopecia and loss of facial hair, as well as loss of vibrissae, seem to be a physical indiaction of social dominance.

Both, females and males will build nests when they have access to appropriate nesting material.

Feather pecking occurs much more often when chicken are kept on wire floor rather then litter which allows the hens to peck up additional food particles.

Social rearing of puppies is the most effective means of ensuring appropriate social behavior as adults.

Chicken will work for food in the presence of free identical food. It is interesting that we failed to note any clear influence exerted by hunger motivation.

The beneficial effects of environmental enrichment are not restricted to a brief cricial period in development. Positive effects occur also in rats aged 300 days when first placed in an enriched environment.

The first part of this paper deals with rat brain anatomy as affected by variations of starting age and of duration of exposure to enriched (complex) or impoverished (restricted) environmental conditions. Cerebral cortical depth measurements...

This review of the literature has illustrated that isolation stress, especially long-term isolation stress in rats and mice, can affect the growth, behavior, physiological condition, and response to a wide variety of drugs. ... Isolation...

Experimentation with therapeutic agents and techniques utilizing human patients is seriously hampered by lack of experimental control and sound ethical constraints. No such problems exist for the monkey researcher. (p. 131)

A 14-year old emotionally disturbed but otherwise asymptomatic girl was noted to have multiple bald spots on her head. Her parents had observed the patient pulling out her hair but denied seeing her swallowing it...

Every effort should be made to keep lighting of the same color, intensity, and day length for laboratory animal breeding and housing, thus avoiding added environmental variables to investigations.

Excellent overview of the species-typical behavior of wild rhesus macaques. Reproduction rate was 90% in wild rhesus troops [in which infants stayed with their mothers beyond the age of natural weaning]. Animals spent the night...