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Short-term evaluation of a foraging device for non-human primates
S N Holmes1, J M Riley, P Juneau
1Parke-Davis Pharmaceutical Research Division, Laboratory Animal Resources, Ann Arbor, MI 48105, USA.
Laboratory Animals
|October 1, 1995
Summary
A new foraging device reduced self-directed behaviors in singly-housed cynomolgus monkeys. Introducing novel food increased device use, preventing decreased interest in the environmental enrichment tool.
Area of Science:
- Primate research
- Animal welfare science
- Behavioral enrichment
Background:
- Regulatory requirements in the USA mandate addressing the psychological needs of non-human primates in research settings.
- Environmental enrichment, particularly through foraging devices, is a key strategy to meet these welfare needs.
Purpose of the Study:
- To evaluate the short-term effects of a novel foraging device on the behavior of singly-housed cynomolgus monkeys.
- To assess the device's acceptance and impact on specific behaviors compared to standard feeding methods.
Main Methods:
- A three-week observational study with singly-housed cynomolgus monkeys.
- Behavioral data collection included foraging, self-directed behaviors, hopper feeding, and other activities.
- Experimental conditions involved a baseline period, followed by the device filled with a normal ration, and then with a novel food.
Main Results:
- Monkeys preferred the new foraging device over the standard hopper feeder.
- Self-directed behaviors were significantly reduced when the device was used compared to baseline.
- Introducing a novel food into the device re-engaged the monkeys' interest, mitigating decreased usage.
Conclusions:
- The novel foraging device is an effective tool for environmental enrichment in singly-housed cynomolgus monkeys.
- The device successfully reduced undesirable self-directed behaviors and maintained engagement through varied food rewards.
- This foraging device has been incorporated into a rotation program for ongoing environmental enrichment.