Publications

Effects of perches in laying cages on welfare and production of hens

Caged hens spent 25 to 50% of the light period and around 85% of the dark period roosting on perches. Perches with a rectangular cross-section caused less damage to the feet of birds than those with a circular cross-section.

Year Published: 1992Animal Type: Bird, Chicken

Citation: Duncan, E. T., Appleby, M. C., Hughes, B. O. 1992. Effects of perches in laying cages on welfare and production of hens. British Poultry Science 33, 25-35.

The effects of the researcher on the behavior of poultry

Year Published: 1992Animal Type: Bird, Chicken

Citation: Duncan, I. J. H. 1992. The effects of the researcher on the behavior of poultry. In: The Inevitable Bond: Examining Scientist-Animal Interaction. Davis, H. , Balfour, D. (eds), 285-294. Cambridge Press, Cambridge, UK.

Environmental enrichment in a large animal facility

The cats' favorite toys contained catnip. ... Cats in single cages often expressed physiological signs of boredom like psychogenic alopecia and polyphagia with resultant obesity. Although we gave these cats a variety of playthings, the problem continued. ... We want...

Year Published: 1992Animal Type: Cat, Dog, Pig

Citation: DeLuca, A. M., Kranda, K. C. 1992. Environmental enrichment in a large animal facility. Lab Animal 21(1), 38-44.

Environmental enrichment influences on body weight, feathering, food condition and behaviour of caged white leghorn hens

Novel objects, providing a diversity of tactile, visual, and auditory stimuli, hung in front of one row of caged within reach of the caged hens, improved foot and feather conditions. Enriched hens were more confident in a novel environment.

Year Published: 1992Topics: Environmental EnrichmentAnimal Type: Bird, Chicken

Citation: Church, J. S., Tennessen, T., Webster, A. B. 1992. Environmental enrichment influences on body weight, feathering, food condition and behaviour of caged white leghorn hens. Journal of Animal Science 70(Supplement 1), 175 (Abstract).

Chronic social stress, affiliation, and cellular immune response in nonhuman primates

Animals in the unstable [group-] condition also demonstrated relatively suppressed immune response. More affiliative animals showed enhanced immune response, with the beneficial effects of affiliation occurring primarily among unstable animals. The data are interpreted as consistent with the stress-buffering hypothesis;...

Year Published: 1992Animal Type: Nonhuman Primate

Citation: Cohen, S., Kaplan, J. R., Cunnick, J. E. et al. 1992. Chronic social stress, affiliation, and cellular immune response in nonhuman primates. Psychological Science 3, 301-304.

Consideration of primate ecology as behavioral enricher

Review of early enrichment studies with very useful recommendations. Housing should be dynamic and entertaining in structure and function. Largest areas practical should be provided with appropriate perching in various configurations to reduce constant visual contact between animals. ... Perhaps...

Year Published: 1992Animal Type: Nonhuman Primate

Citation: Clark, B. 1992. Consideration of primate ecology as behavioral enricher. American Association of Zoological Parks and Aquariums/Canadian Association of Zoological Parks and Aquariums (AAZPA/CAZPA) Annual Conference Proceedings, 557 (Abstract).

Enrichment options: Food dispensers

Drawings of a seed dispenser and a biscuit dispenser.

Year Published: 1992Animal Type: All/General

Citation: Clark, B. 1992. Enrichment options: Food dispensers. Animal Keepers' Forum 19(1), 15.

Sustaining captive primate `natural’ behavior via psychological enrichment

Valuable recommendations for the enrichment of environment for captive primates.

Year Published: 1992Topics: Environmental EnrichmentAnimal Type: Nonhuman Primate

Citation: Clark, B. 1992. Sustaining captive primate `natural' behavior via psychological enrichment. Proceedings of the National Conference of the American Association of Zoo Keepers (AAZK) 17, 123-145.

Behavioural profile of free-ranging rhesus monkeys

Arboreality was recorded at its maximum in the forest habitat (40.2%), followed by pond (34.1%) and temple (27.8%) habitats. ... When the group was threatened by external dangers, almost all animal responded by immediately climbing the trees. The animals spent...

Year Published: 1992Animal Type: Macaque, Nonhuman Primate

Citation: Chopra, P. K., Seth, P. K., Seth, S. 1992. Behavioural profile of free-ranging rhesus monkeys. Primate Report 32, 75-105.

Environmental enrichment strategies for baboons

Toys and swings were used predominantly by single-housed juveniles in gang cages.

Year Published: 1992Topics: Environmental EnrichmentAnimal Type: Baboon, Nonhuman Primate

Citation: Choi, G. C., Canfield, R. W., Hall, E. C. et al. 1992. Environmental enrichment strategies for baboons. Contemporary Topics in Laboratory Animal Science 31(4), 6 (Abstract).