Nonhuman Primate

The use of non-human primates as laboratory animals in Europe: Moving toward the zero option

Estimates of so-called need [of non-human primates] are based on current use which, in my view, cannot be justified on scientific grounds. If current regulations on establishing necessity were applied more strictly, the real figure for justifiable need would fall...

Year Published: 1995Animal Type: Nonhuman Primate

Citation: Balls, M. 1995. The use of non-human primates as laboratory animals in Europe: Moving toward the zero option. ATLA (Alternatives to Laboratory Animals) 23, 284-286.

The behavioral and physiological response of baboons (Papio hamadryas sp.) to radio music

Vocalization [of the single-housed subjects] was twice as high when the radio was off. Blood pressure did not vary with radio condition, but the heart rate was significantly lower when the radio was playing.

Year Published: 1995Animal Type: Baboon, Nonhuman Primate

Citation: Brent, L., Weaver, D. 1995. The behavioral and physiological response of baboons (Papio hamadryas sp.) to radio music. American Journal of Primatology 36, 114 (Abstract).

Differences in behavior between chimpanzees housed long-term in individual cages and small groups

Chimpanzees housed in pairs or trios showed fewer signs of tension, anxiety and aggressiveness than those housed singly.

Year Published: 1995Animal Type: Chimpanzee, Nonhuman Primate

Citation: Baker, K. C. 1995. Differences in behavior between chimpanzees housed long-term in individual cages and small groups. American Journal of Primatology 36, 106 (Abstract).

The behavioral response of individually caged baboons to feeding enrichment and the standard diet: A preliminary report

PVC pipe with finger holes, filled with a mixture of peanut butter and seeds. The mean amount of feeder use was 51 minutes per 60 minute observation sessions. Increasing foraging opportunities in this study reduced abnormal behaviors from 16.4% of...

Year Published: 1995Animal Type: Baboon, Nonhuman Primate

Citation: Brent, L., Long, K. E. 1995. The behavioral response of individually caged baboons to feeding enrichment and the standard diet: A preliminary report. Contemporary Topics in Laboratory Animal Science 34(2), 65-69.

Improving the laboratory environment for nonhuman primates

Environmental improvements include construction of large indoor cages that allow pairing of experimental animals, a grass-covered 'playground' for breeding chimpanzee groups, and indoor/outdoor group housing for 'retired' experimental animals. In addition, we provide toys, perches, mirrors, and foraging devices, and...

Year Published: 1995Topics: Environmental Enrichment, Housing, Rearing & Weaning, ReproductionAnimal Type: Chimpanzee, Nonhuman Primate

Citation: Brent, L. 1995. Improving the laboratory environment for nonhuman primates. Animal Welfare Institute (AWI) Quarterly 44(1), 14-15.

Feeding enrichment and body weight in captive chimpanzees

Regular offering of frozen foods and liquids, grains, dried fruit and foods presented in foraging devices resulted in a body weight increase of female but not of male chimpanzees.

Year Published: 1995Animal Type: Chimpanzee, Nonhuman Primate

Citation: Brent, L. 1995. Feeding enrichment and body weight in captive chimpanzees. Journal of Medical Primatology 24, 12-16.

Primate enrichment

Several feeding enrichment options are briefly described.

Year Published: 1995Topics: Environmental EnrichmentAnimal Type: Nonhuman Primate

Citation: Bollen, K. 1995. Primate enrichment. Animal Keepers' Forum 22, 162.

Behavioral and adrenocortical responses of male cynomolgus and lion-tailed macaques to social stimulation and group formation

Males were exposed to a mirror, then visually exposed to conspecific neighbors in all pairwise combinations, and then formed into conspecific groups [of 3 animals each]. Following group formation [urinary] cortisol values showed a decreasing trend in the cynomolgus, but...

Year Published: 1995Animal Type: Macaque, Nonhuman Primate

Citation: Clarke, A. S., Czekala, N. M., Lindburg, D. G. 1995. Behavioral and adrenocortical responses of male cynomolgus and lion-tailed macaques to social stimulation and group formation. Primates 36, 41-46.

Behavioral responses of longtailed macaques to different cage sizes and common laboratory experiences

Locomotion and the frequency of behavioral changes were significantly lower in the two smallest, barren cages than in all the other larger, barren cages. Many cages that were built before passage of the law establishing minimums based on the inhabitant's...

Year Published: 1995Animal Type: Macaque, Nonhuman Primate

Citation: Crockett, C. M., Bowers, C. L., Shimoji, M. et al. 1995. Behavioral responses of longtailed macaques to different cage sizes and common laboratory experiences. Journal of Comparative Psychology 109, 368-383.

How often do singly housed longtailed macaques choose grooming contact with a neighbor? American Journal of Primatology 36, 118 (Abstract)

Grooming-contact bars - allowing cage neighbors to physically interact with each other but preventing them from pursuing one another - were successfully tested in adult male/male, female/female and female/male dyads.

Year Published: 1995Animal Type: Macaque, Nonhuman Primate

Citation: Crockett, C. M., Bowers, C. L., Bellanca, R. U. et al. 1995. How often do singly housed longtailed macaques choose grooming contact with a neighbor? American Journal of Primatology 36, 118 (Abstract).