Environmental enrichment reduces behavioural alterations induced by chronic stress in Japanese quail

Animal : an International Journal of Animal Bioscience
A LaurenceS Lumineau


Animals perceiving repeated aversive events can become chronically stressed. Chronic activation of the hypothalamic-pituitary-adrenal (HPA) axis can have deleterious consequences on physiological parameters (e.g. BW, blood chemistry) and behaviour (e.g. emotional reactivity, stereotypies, cognition). Environmental enrichment (EE) can be a mean to reduce animal stress and to improve welfare. The aim of this study was first, to assess the effects of EE in battery cages on the behaviour of young Japanese quail and second, to evaluate the impact of EE on quail exposed to chronic stress. The experiment involved quail housed in EE cages and submitted or not to a chronic stress procedure (CSP) (EE cages, control quail: n=16, CSP quail: n=14) and quail housed in standard cages and exposed or not to the CSP (standard non-EE cages, control quail: n=12, CSP quail: n=16). Our procedure consisted of repeated aversive events (e.g. ventilators, delaying access to food, physical restraint, noise) presented two to five times per 24 h, randomly, for 15 days. During CSP, EE improved quail's welfare as their stereotypic pacing decreased and they rested more. CSP decreased exploration in all quail. After the end of CSP, quail presented increased em...Continue Reading


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Related Concepts

Animal Feed (Substance)
Animal Husbandry
Behavior, Animal
Japanese Quail
Impacts, Environmental
Fear (Mental Process)
Housing, Animal
Hypothalamo-Hypophyseal System
Pituitary-Adrenal System
Blood Chemical Analysis

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