Emotionality modulates the effect of chronic stress on feeding behaviour in birds
2014
Favreau-Peigné, Angélique | Calandreau, Ludovic | Constantin, Paul | Gaultier, Bernard | Bertin, Aline | Arnould, Cécile | Laurence, Agathe | Richard-Yris, Marie-Annick | Houdelier, Cécilia | Lumineau, Sophie | Boissy, Alain | Leterrier, Christine | Modélisation Systémique Appliquée aux Ruminants (MoSAR) ; Institut National de la Recherche Agronomique (INRA)-AgroParisTech | Physiologie de la reproduction et des comportements [Nouzilly] (PRC) ; Institut National de la Recherche Agronomique (INRA)-Institut Français du Cheval et de l'Equitation [Saumur] (IFCE)-Université de Tours (UT)-Centre National de la Recherche Scientifique (CNRS) | Pôle d'Expérimentation Avicole de Tours (UE PEAT) ; Institut National de la Recherche Agronomique (INRA) | Ethologie animale et humaine (EthoS) ; Université de Caen Normandie (UNICAEN) ; Normandie Université (NU)-Normandie Université (NU)-Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS) | Unité Mixte de Recherche sur les Herbivores - UMR 1213 (UMRH) ; Institut National de la Recherche Agronomique (INRA)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS) | ANR-09-BLAN-0339 - EmoFarm | ANR-09-BLAN-0339,EmoFarm,Modifications de la sensibilité émotionnelle et des capacités cognitives et sociales induites par le développement d'états affectifs durables chez les animaux d'élevage(2009)
International audience
显示更多 [+] 显示较少 [-]英语. Chronic stress is a long-lasting negative emotional state that induces negative consequences on animals' psycho-physiological state. This study aimed at assessing whether unpredictable and repeated negative stimuli (URNS) influence feeding behaviour in quail. Sixty-four quail were exposed to URNS from day 17 to 40, while 64 quail were undisturbed. Two lines divergently selected on their inherent emotionality were used to assess the effect of genetic factors on the sensitivity to URNS. All quail were submitted to a sequential feeding procedure (using two diets of different energetic values) which placed them in a contrasting situation. Behavioural tests were performed to assess the emotional reactivity of the two lines. Results confirmed that differences exist between them and that their emotional reactivity was enhanced by URNS. Diet preferences, motivation and daily intake were also measured. URNS did not change the preferences for the hypercaloric diet compared to the hypocaloric diet in choice tests, but they reduced daily intakes in both lines. Motivations for each diet were differently affected by URNS: they decreased the motivation to eat the hypercaloric diet in quail selected for their low inherent fearfulness whereas they increased the motivation to eat the hypocaloric diet in quail selected for their high inherent fearfulness, which suggested a devaluation process in the former and a compensatory behaviour in the later. Growth was furthermore reduced and laying delayed by URNS in both lines. In conclusion, the exposure to URNS induced interesting changes in feeding behaviour added with an increase in emotional reactivity and an alteration of production parameters. This confirms that both lines of quail experienced a chronic stress state. However differences in feed motivation and emotional reactivity between lines under chronic stress suggested that they experienced different emotional state and use different ways to cope with it depending on their genetic background.
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