Plasma cortisol and faecal cortisol metabolites concentrations in stereotypic and non-stereotypic horses: do stereotypic horses cope better with poor environmental conditions ?
2013
Fureix , Carole (Université de Rennes 1Université de Guelph , RennesGuelph(France). UMR CNRS 6552 Ethologie Animale et HumaineAnimal and Poultry Science department, Animal and Animal Behaviour and Welfare group) | Benhajali , Haïfa (Université de Rennes 1Centre National de la Recherche Scientifique, RennesRennes(France). UMR CNRS 6552 Ethologie Animale et HumaineUMR 6552 Ethologie Animale et Humaine) | Henry , Séverine (Université de Rennes 1Centre National de la Recherche Scientifique, RennesRennes(France). UMR CNRS 6552 Ethologie Animale et HumaineUMR 6552 Ethologie Animale et Humaine) | Bruchet , Anaelle (Université de Rennes 1Centre National de la Recherche Scientifique, RennesRennes(France). UMR CNRS 6552 Ethologie Animale et HumaineUMR 6552 Ethologie Animale et Humaine) | Prunier , Armelle (INRA , Saint Gilles (France). UMR 1348 Physiologie, Environnement et Génétique pour l'Animal et les Systèmes d'Elevage ) | Ezzaouia , Mohammed (Haras National de Sidi Thabet, Thabet(Tunisie).) | Coste , Caroline (Université de Rennes 1Centre National de la Recherche Scientifique, RennesRennes(France). UMR CNRS 6552 Ethologie Animale et HumaineUMR 6552 Ethologie Animale et Humaine) | Hausberger , Martine (Université de Rennes 1Centre National de la Recherche Scientifique, RennesRennes(France). UMR CNRS 6552 Ethologie Animale et HumaineUMR 6552 Ethologie Animale et Humaine) | Palme , Rupert (University of Veterinary Medecine of Vienna, Vienne(Autriche). Institute of Biochemistry, Department of Natural Sciences) | Jego , Patrick (Université de Rennes 1, Rennes(France). UMR 6552 Ethologie Animale et Humaine)
Background: Stereotypic behaviours, i.e. repetitive behaviours induced by frustration, repeated attempts to cope and/or brain dysfunction, are intriguing as they occur in a variety of domestic and captive species without any clear adaptive function. Among the different hypotheses, the coping hypothesis predicts that stereotypic behaviours provide a way for animals in unfavourable environmental conditions to adjust. As such, they are expected to have a lower physiological stress level (glucocorticoids) than non-stereotypic animals. Attempts to link stereotypic behaviours with glucocorticoids however have yielded contradictory results. Here we investigated correlates of oral and motor stereotypic behaviours and glucocorticoid levels in two large samples of domestic horses (N-Study1 = 55, N-Study2 = 58), kept in sub-optimal conditions (e. g. confinement, social isolation), and already known to experience poor welfare states. Each horse was observed in its box using focal sampling (study 1) and instantaneous scan sampling (study 2). Plasma samples (collected in study 1) but also non-invasive faecal samples (collected in both studies) were retrieved in order to assess cortisol levels. Results: Results showed that 1) plasma cortisol and faecal cortisol metabolites concentrations did not differ between horses displaying stereotypic behaviours and non-stereotypic horses and 2) both oral and motor stereotypic behaviour levels did not predict plasma cortisol or faecal cortisol metabolites concentrations. Conclusions: Cortisol measures, collected in two large samples of horses using both plasma sampling as well as faecal sampling (the latter method minimizing bias due to a non-invasive sampling procedure), therefore do not indicate that stereotypic horses cope better, at least in terms of adrenocortical activity.
Mostrar más [+] Menos [-]Palabras clave de AGROVOC
Información bibliográfica
Este registro bibliográfico ha sido proporcionado por Institut national de la recherche agronomique