Bird's emotionality modulates the impact of chronic stress on feeding behaviour - Archive ouverte HAL Accéder directement au contenu
Poster De Conférence Année : 2014

Bird's emotionality modulates the impact of chronic stress on feeding behaviour

Sophie Lumineau
Cécilia Houdelier
  • Fonction : Auteur
  • PersonId : 177101
  • IdHAL : choudelier

Résumé

Chronic stress is a long-lasting negative emotional state which induces negative consequences on animals’ behavior. This study aimed at assessing whether unpredictable and repeated negative stimuli (URNS) influence feeding behavior in quail, and whether this can be modulated by their emotionality. Two lines of quail divergently selected on their inherent emotionality (low emotionality, STI; high emotionality, LTI) were either daily exposed to URNS or undisturbed from 17 to 40 days of age (n=32 for each line, in each group). During this time, quail were submitted twice to a sequential feeding procedure: they were offered a hypocaloric diet (7% less caloric than the normocaloric diet) on odd days and a hypercaloric diet (7% more caloric) on even days, for 8 days; then, they received a normocaloric diet (metabolizable energy=12.56 MJ) for 3 days. This sequential feeding procedure was used to assess anhedonia and diet preferences thanks to choice tests (hypo vs. hypercaloric diets) performed at the end of each period. Short-term (30 min) and daily intake were also measured each day. Behavioral tests were performed to assess quail’s emotional reactivity. Results showed that URNS enhanced quails’ emotional reactivity, e.g. in the reactivity to human test, disturbed quail came later (P=0.011) and spent less time (P<0.01) in front of the cage (close to the human) than control quail. URNS did not change quails’ relative preferences for the hypercaloric diet (P>0.1), but URNS reduced their daily intake during the 2nd period (P<0.05). Motivation for each diet (assessed by their short-term intake) was differently affected by URNS during the 2nd period: STI quail decreased their motivation to eat the hypercaloric diet (P<0.01) whereas LTI increased their motivation to eat the hypocaloric diet (P<0.01). In conclusion, both lines of quail experienced a chronic stress as URNS induced an increase of their emotional reactivity. Interestingly, URNS induced opposite changes in quail’s feeding behavior: LTI disturbed quail seemed to express a short-term compensatory behavior because of their high motivation to eat, whereas STI disturbed quail seemed to be in a devaluation process as shown by their anhedonia and their decrease of daily intake.

Dates et versions

hal-01146662 , version 1 (28-04-2015)

Identifiants

Citer

Angélique Favreau-Peigné, Ludovic Calandreau, Bernard Gaultier, Paul Constantin, Aline Bertin, et al.. Bird's emotionality modulates the impact of chronic stress on feeding behaviour. 48th Congress of the International Society for Applied Ethology, Jul 2014, Vitoria-Gasteiz, Spain. Wageningen Academic Publishers, pp.978-90-8686-245-0, 2014, Proceedings of the 48th ISAE Congress - "Moving On". ⟨10.3920/978-90-8686-797-4⟩. ⟨hal-01146662⟩
173 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More