When young animals are separated from their normal social environment in groups they distress vocalize (DV) less than when isolated alone. Opioid blockade with naloxone (1 mg/kg peripherally, and 1 microgram centrally) increased crying more...
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...
The results of the present study indicate that specific noise stimulus (90 dB versus 65 dB) causes stress and fear in laying hens and specific classical music stimulus (75 dB versus 65 dB) has a...
Single-caged pigeons were successfully transferred to compatible group-housing.
A strong preference was found for dustbathing on Astroturf flooring.
In the present study, high feather pecking (HFP) and low feather pecking (LFP) birds were used to investigate if the lines differ in their willingness to work for food or feathers in the presence of...
Environmental enrichment must be provided for the various animal species that are housed in laboratory animal facilities. Wheatgrass can be used as a natural form of enrichment that requires minimal preparation and effort. Wheatgrass is...
Severe feather pecking, a potentially stereotypic behaviour in chickens (Gallus gallus), can be reduced by providing enrichment. However, there is little comparative information available on the effectiveness of different types of enrichment. Providing forages to...
Birds that are kept in captivity often require nail trims, presumably due to the lack of opportunity to wear the nails down on natural substrates. For many birds, restraint for the nail trim may result...
Physiological and psychological effects of listening to music have been documented in humans. The changes in physiology, cognition and brain chemistry and morphology induced by music have been studied in animal models, providing evidence that...