Chicken

Foot and skeletal disorders in laying hens

Flat-surfaced, mushroom-shaped, wooden perches reduce keel damage when compared with traditional, wide, rectangular wooden perches [which cause less damage than those with circular cross-section].

Year Published: 1994Animal Type: Bird, Chicken

Citation: Tauson, R., Abrahamsson, P. 1994. Foot and skeletal disorders in laying hens. Acta Agriculturae Scandinavia, Section A - Animal Science 44, 110-119.

Effects of regular handling and exposure to an outside area on subsequent fearfulness and dispersal in domestic hens

Repeated exposure of immature birds to an outside area [enriched environment] reduced fear levels to a greater degree than did regular handling alone. These results are in accord with studies which suggest that previous regular exposure to a complex environment...

Year Published: 1995Animal Type: Bird, Chicken

Citation: Grigor, P. N., Hughes, B. O., Appleby, M. C. 1995. Effects of regular handling and exposure to an outside area on subsequent fearfulness and dispersal in domestic hens. Applied Animal Behaviour Science 44, 47-55.

Endogenous analgesia in the chicken

When chickens were placed in pairs into pens containing a deep layer of wood shavings, they either showed complete analgesia or significantly less pain-related behavioral reactions to a joint inflammation produced by urate injection. When tested in the barren cage,...

Year Published: 1995Animal Type: Bird, Chicken

Citation: Gentle, M. J., Corr, S. A. 1995. Endogenous analgesia in the chicken. Neuroscience Letters 201, 211-215.

Environmental enrichment for laying hens – Spherical objects in the feed trough

Brightly coloured spherical objects [balls 4-9 cm in diameter] placed in the feed trough are considered to be a promising method of successful environmental enrichment [simulating ground-litter] for caged laying hens. There was no indication of habituation.

Year Published: 1995Topics: Environmental EnrichmentAnimal Type: Bird, Chicken

Citation: Sherwin, C. M. 1995. Environmental enrichment for laying hens - Spherical objects in the feed trough. Animal Welfare 4, 41-51.

Enrichment for farm animals

Review of basic principles of adequate housing and handling of farm animals in the research laboratory setting.

Year Published: 1995Animal Type: All/General, Bird, Cattle, Chicken, Equine, Pig, Sheep

Citation: Appleby, M. C. 1995. Enrichment for farm animals. Animal Welfare Information Center [AWIC] Resource Series 2, 63-67.

Approach/avoidance response of domestic chicks to familiar and unfamiliar video images of biologically neutral stimuli

Chicks are highly responsive to video images. Their reactions .. provide evidence of some attraction for novelty. .. If complex video images are intrinsically attractive to chicks they might provide a highly visible form of additional stimulation; their easily varied...

Year Published: 1996Animal Type: Bird, Chicken

Citation: Jones, R. B., Larkins, C., Hughes, B. O. 1996. Approach/avoidance response of domestic chicks to familiar and unfamiliar video images of biologically neutral stimuli. Applied Animal Behaviour Science 48, 81-98.

Fear and adaptability in poultry: insights, implications and imperatives

Environmental enrichment can reduce fear responses and feather pecking.

Year Published: 1996Topics: Abnormal/Problematic Behavior, Emotion, Pain, & Sentience, Environmental EnrichmentAnimal Type: Bird, Chicken

Citation: Jones, R. B. 1996. Fear and adaptability in poultry: insights, implications and imperatives. World's Poultry Science Journal 52, 131-174.

The behavioural priorities of laying hens: the effects of two methods of environmental enrichment on time budget

Environmental enrichment and/or feeding from the [woodchips] litter reduces agonistic behaviour and possibly frustration.

Year Published: 1996Topics: Environmental EnrichmentAnimal Type: Bird, Chicken

Citation: Bubier, N. E. 1996. The behavioural priorities of laying hens: the effects of two methods of environmental enrichment on time budget. Behavioural Processes 37, 239-249.

Application of a radiotelemetry system for chronic measurement of blood pressure, heart rate, EEG, and activity in the chicken

This paper reports the first successful chronic monitoring (for 30 days) of blood pressure, heart rate, EEG, and physical activity in a freely moving bird, following (described) implantation of a commercially available (Data Sciences International) radiotelemetry device in a 1.6-kg...

Year Published: 1996Animal Type: Bird, Chicken

Citation: Savory, C. J., Kostal, L. 1996. Application of a radiotelemetry system for chronic measurement of blood pressure, heart rate, EEG, and activity in the chicken. Physiology and Behavior 61, 963-969.

Environmental enrichment device and egg production in laying hens

A commercially available toy, suspended from the cage roof reduced aggression in laying hens.

Year Published: 1997Topics: Environmental EnrichmentAnimal Type: Bird, Chicken

Citation: Baroli, D., Ghiandoni, S., Mantovani, C. et al. 1997. Environmental enrichment device and egg production in laying hens. In: Proceedings of the European Symposium on Poultry Welfare. Koene, P. , Blokhuis, H. J. (eds), 107-108. Ponsen and Looyen, Wageningen, Netherlands.