Publications

Activity patterns of rats (Rattus norvegicus) as a function of the cost of access to four resources

Wheel running seems to be a rewarding experience and subjects are bar pressing to obtain access to a wheel.

Year Published: 1990Animal Type: Rat, Rodent

Citation: Collier, G. H., Johnson, D. E., Cybulski, KA. et al. 1990. Activity patterns of rats (Rattus norvegicus) as a function of the cost of access to four resources. Journal of Comparative Psychology 104, 53-65.

The influence of different social and physical environments on the incidence of lactational oestrus in sows

The family pens contain an activity area with straw and a rooting area with peat and bark. This environmental enrichment increases the foraging activity of the sows and probably further reduces the amount of time they spend in close contact...

Year Published: 1990Animal Type: Pig

Citation: Stolba, A., Henderson, R., Wechsler, B. 1990. The influence of different social and physical environments on the incidence of lactational oestrus in sows. Applied Animal Behaviour Science 27, 269-276.

Social organisation of Merino sheep of different ages, sex and family structure

Sheep respond to the addition of trees, logs and earthen mounds by increasing their repertoire of behavior compared to those seen in barren paddocks.

Year Published: 1990Animal Type: Sheep

Citation: Stolba, A., Hinch, G. N., Lynch, J. J. et al. 1990. Social organisation of Merino sheep of different ages, sex and family structure. Applied Animal Behaviour Science 27, 337-349.

Behaviour and distribution of fattening pigs in the multi-activity pen

Reduced tail biting and increased exploratory behavior was noted in group-housed pigs who lived in enriched pens.

Year Published: 1990Animal Type: Pig

Citation: Simonsen, H. B. 1990. Behaviour and distribution of fattening pigs in the multi-activity pen. Applied Animal Behaviour Science 27, 311-324.

Studies of the effects of group housing of calves on their welfare

Year Published: 1990Topics: Social Housing & CompanionshipAnimal Type: Cattle

Citation: Schlichting, M., Smidt, D., Muller, C. 1990. Studies of the effects of group housing of calves on their welfare. Tiererztliche Umschau 45, 785-791.

The effect of environmental enrichment on aggression in newly weaned pigs

The provision of enrichment object [tire hung from chains, pig-pacifier toy , teeter-totter ] reduced aggression among newly weaned pigs.

Year Published: 1990Topics: Environmental EnrichmentAnimal Type: Pig

Citation: Schaefer, A. L., Salomons, M. O., Tong, A. K. W. et al. 1990. The effect of environmental enrichment on aggression in newly weaned pigs. Applied Animal Behaviour Science 27, 41-52.

Changes in duration and frequency of stereotypies and their adjoining behaviours in heifers, before, during and after the grazing period

Heifers who showed stereotypical behaviors on pasture more than doubled the time spent performing stereotypies after being confined in tether-stalls.

Year Published: 1990Animal Type: Cattle

Citation: Redbo, I. 1990. Changes in duration and frequency of stereotypies and their adjoining behaviours in heifers, before, during and after the grazing period. Applied Animal Behaviour Science 26, 57-67.

Preliminary evaluation of Prima-Hedron play structures for non-human primates

Description of commercial roto-molded polyethylene structures serving as swing toys. The Prima-Hedrons' greatest virtues are that they can be assembled in so many ways that novelty is not restricted, and they can therefore maintain the interest of the monkeys using...

Year Published: 1990Animal Type: Nonhuman Primate

Citation: O'Neill, P. L., Novicky, P., George, E. 1990. Preliminary evaluation of Prima-Hedron play structures for non-human primates. Lab Animal 19(5), 40-41.

Designing captive primate environments sensitive to age and gender related activity profiles for rhesus monkeys (Macaca mulatta)

An analysis of the time budget (agonistic behavior is excluded) of rhesus macaque groups kept in free-ranging and confined [corncrib] condition. Adult animals spent about the same amount of time engaged in social grooming in both conditions (17%) but spent...

Year Published: 1990Animal Type: Macaque, Nonhuman Primate

Citation: O'Neill, P. L., Price, C., Suomi, S. J. 1990. Designing captive primate environments sensitive to age and gender related activity profiles for rhesus monkeys (Macaca mulatta). American Zoo and Aquarium Association (AZA) Regional Conference Proceedings, 346-354.

Are brief threating events beneficial for captive tamarins?

Cotton-top tamarins living in four families were observed following stimulating husbandry procedures [capture, birds passing overhead]. Arousal led to an improvement in behaviour (i.e., decrease in activity and an increase in affiliation) during the remainder of the day.

Year Published: 1990Animal Type: Nonhuman Primate, Other Nonhuman Primate

Citation: Moodie, E. M., Chamove, A. S. 1990. Are brief threating events beneficial for captive tamarins? Zoo Biology 9, 275-286.