title: Effect of novelty and restraint on catecholamines in plasma of laying hens.
abstract: 1. The present study describes the effects of novelty (experiment 1) and restraint (experiment 2) on the catecholamine responses in laying hens. 2. Manual restraint caused a higher catecholamine response than mere visual exposure to a human being wearing yellow gloves and swinging his hand in the bird's home cage. 3. A relationship could be shown between adrenaline concentrations in plasma after a novel stimulus and the duration of tonic immobility.
authors.affiliation: Institute for Animal Science and Health, Lelystad, The Netherlands.
authors.forename: G
authors.initials: G
authors.lastname: Beuving
authors.forename: H J
authors.initials: HJ
authors.lastname: Blokhuis
mesh_terms: D000818:Animals; D002645:Chickens; D004837:Epinephrine / Q000097:blood* / Q000378:metabolism; D005260:Female; D006801:Humans; D009638:Norepinephrine / Q000097:blood* / Q000378:metabolism; D010058:Oviposition; D012149:Restraint, Physical; D013315:Stress, Psychological
chemical_list: D009638:Norepinephrine; D004837:Epinephrine