Publications

Ecological aspects of chicken husbandry – Interaction between environmental condition, behavioural activity of hens and quality of deep litter

Under low light conditions behaviour activity decreases but feather pecking increases strongly. Feather pecking therefore can be interpreted as a deficiency in light stimuli for the initiation of normal behaviour patterns in a deep litter system.

Year Published: 1991Topics: Abnormal/Problematic Behavior, Husbandry & ManagementAnimal Type: Bird, Chicken

Citation: Martin, G. 1991. Ecological aspects of chicken husbandry - Interaction between environmental condition, behavioural activity of hens and quality of deep litter. In: Alternatives in Animal Husbandry. Boehnke, E. , Mokenthin, V. (eds), 87-94. University of Kassel, Witzenhausen, Germany.

Physiological responses of mares to short term confinement and social isolation

Social isolation is a distressing experiences for horses.

Year Published: 1991Animal Type: Equine

Citation: Mal, M. E., Friend, T. H., Lay, D. C. et al. 1991. Physiological responses of mares to short term confinement and social isolation. Equine Veterinary Science 11, 96-102.

Behavioral responses of mares to short-term confinement and social isolation

Separation from other horses is a stressful experience.

Year Published: 1991Animal Type: Equine

Citation: Mal, M. E., Friend, T. H., Lay, D. C. et al. 1991. Behavioral responses of mares to short-term confinement and social isolation. Applied Animal Behaviour Science 31, 13-24.

Group-housing rabbits

The management and success of a group-housing indoor/outdoor pen system for rabbits [mainly females] is described and discussed. Over a three-year study period a total of 141,000 rabbits were included in the assessment. The levels of fighting injuries was low,...

Year Published: 1991Topics: Social Housing & CompanionshipAnimal Type: Rabbit

Citation: Love, J. A., Hammond, K. 1991. Group-housing rabbits. Lab Animal 20(8), 37-43.

Social behaviour of young domestic rabbits under semi-natural conditions

Detailed description of species-typical behavior patterns.

Year Published: 1991Animal Type: Rabbit

Citation: Lehmann, M. 1991. Social behaviour of young domestic rabbits under semi-natural conditions. Applied Animal Behaviour Science 32, 269-292.

Use of a grooming and foraging substrate to reduce cage stereotypies in macaques

We examined the effects of a synthetic fleece pad on cage stereotypies in individually housed cynomolgus monkeys. Animals exhibited idiosyncratic repertoires of stereotyped behaviour, including repetitive pacing, swaying circling, bouncing, cage charging, and rocking that occupied on average 11% of...

Year Published: 1991Topics: Abnormal/Problematic Behavior, Environmental EnrichmentAnimal Type: Macaque, Nonhuman Primate

Citation: Lam, K., Rupniak, N. M. J., Iversen, S. D. 1991. Use of a grooming and foraging substrate to reduce cage stereotypies in macaques. Journal of Medical Primatology 20(3), 104-109.

Comparing the effectiveness of PVC swings versus PVC perches as environmental enrichment objects for caged female rhesus macaques

Single-housed subjects' preference for perches was probably related to the fact that perches, unlike swings, are fixed structures permitting continuous relaxed postures rather than short-term balancing. Moreover, perches, unlike swings, permit the animals to sit right in front of the...

Year Published: 1991Animal Type: Macaque, Nonhuman Primate

Citation: Kopecky, J., Reinhardt, V. 1991. Comparing the effectiveness of PVC swings versus PVC perches as environmental enrichment objects for caged female rhesus macaques. Laboratory Primate Newsletter 30(2), 5-6.

Chimpanzee invent enrichment devices: A brief anecdotal report

Two young, single-housed chimpanzees created their own swings - one a spinning swing, the other a conventional swing - with strips of their blankets.

Year Published: 1991Topics: Environmental EnrichmentAnimal Type: Chimpanzee, Nonhuman Primate

Citation: Kennedy, K. 1991. Chimpanzee invent enrichment devices: A brief anecdotal report. Laboratory Primate Newsletter 30(3), 15.

A unique housing system for rhesus macaques

From each bank of four dog cages, we removed the ceilings of the lower two cages, making a single housing unit for macaques. To each cage we added three resting perches, a climbing ladder, windows on both sides, and a...

Year Published: 1991Animal Type: Macaque, Nonhuman Primate

Citation: Kaplan, M. L., Jobao, B. J. 1991. A unique housing system for rhesus macaques. Lab Animal 20(6), 48-50.

Decision analysis for developing programs of psychological well-being

Because overintellectualizing a problem can lead to paralysis, we must be predisposed to taking action, even though that action may be based on less information than we would like. A conceptual framework for such action is outlined.

Year Published: 1991Animal Type: Nonhuman Primate

Citation: Keeling, M. E., Alford, P. L., Bloomsmith, M. A. 1991. Decision analysis for developing programs of psychological well-being. In: Through the Looking Glass. Issues of Psychological Well-Being in Captive Nonhuman Primates. Novak, M. A. , Petto, A. J. (eds), 57-65. American Psychological Association, Washington DC.