Higher perching elevations appear to be a very desirable feature in this environment for the expression of six of the twelve behaviors studied. Mid-level perches, on the other hand, were utilized more for only two...
Eight single-caged adult rhesus macaques were given the choice of freely collecting their standard food ration, i.e. 33 biscuits, from an ordinary food box or working for its retrieval from a custom- made food puzzle...
The animals spent approximately 20% of the [day] time interacting with the companion, 10% perching on the PVC pipe, 4% gnawing/manipulating the branch segment and 7% foraging for primary food.
Two different pair formation options for adult female and male rhesus macaques are described and tested: Pairing adults with adults of the same sex after establishment of dominance-subordination relationships during a noncontact familiarization period, and...
A safe pair formation technique is described. All 20 [adult male] pairs were compatible during pair formation and throughout the 2-month follow-up period.
Isosexual pair-housing of ten female and six male previously single-caged adult stump-tailed macaques (Macaca arctoides) was attempted. Partners were introduced to each other following the establishment of rank relationships during a three-day non-contact familiarization period...
With some professional expertise and goodwill, there should be no real need to resort to forceful restraint when doing research with nonhuman primates.
For captive primates, environmental enrichment may improve psychological well-being, as indicated by changes in the frequency of species-typical and abnormal behaviours. The effects of enrichment on physical well-being have also been examined, but little attention...
The proximity of individual members of three family groups of marmosets was measured to two sources of food namely, on the introduction of their normal daily ration (baseline behaviour) as well as to a previously...
A review of the scientific literature gives evidence that transferring previously single-caged adult macaques to permanent compatible pair-housing arrangements (isosexual pairs, adult/infant pairs) is associated with less risk of injury and morbidity than transferring them...