References
USDA Animal Welfare Act Regulations And Standards, Section 3.81 (Environment Enhancement To Promote Psychological Well-Being)
From the USDA Animal Welfare Act Regulations and Standards, Section 3.81 (Environment enhancement to promote psychological well-being)-
“(d) Restraint devices. Nonhuman primates must not be maintained in restraint devices unless required for health reasons as determined by the attending veterinarian or by a research proposal approved by the Committee at research facilities. Maintenance under such restraint must be for the shortest period possible. In instances where long-term (more than 12 hours) restraint is required, the nonhuman primate must be provided the opportunity daily for unrestrained activity for at least one continuous hour during the period of restraint, unless continuous restraint is required by the research proposal approved by the Committee at research facilities.”