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Lipids in maternal diet influence yolk hormone levels and post-hatch neophobia in the domestic chick

By Elske N. de Haas, Ludovic Calandreau, Elisabeth Baéza, Pascal Chartrin, Rupert Palme, Anne-Sophie Darmaillacq, Ludovic Dickel, Sophie Lumineau, Cécilia Houdelier, Isabelle Denis, Cécile Arnould, Maryse Meurisse and Aline Bertin

Abstract

International audienceWe assessed whether the ratio of dietary n-6/n-3 polyunsaturated fatty acids (PUFA) during egg formation engenders transgenerational maternal effects in domestic chicks. We analyzed yolk lipid and hormone concentrations, and HPA-axis activity in hens fed a control diet (high n-6/n-3 ratio) or a diet enriched in n-3 PUFAs (low n-6/n-3 ratio) for 6 consecutive weeks. Their chicks were tested for neophobia during the first week of life. We found higher corticosterone metabolites in droppings of hens fed the diet enriched in n-3 and significantly higher concentrations of yolk progesterone, androstenedione, and estradiol in their eggs compared to controls. Chicks of hens fed the n-3 enriched diet showed a lower body mass at hatch than controls and expressed higher neophobia when exposed to a novel object. These results add support to the hypothesis that the nutritional state of female birds produces variation in yolk hormone levels and engender maternal effects

Topics: Gallus gallus domesticus, neophobia, maternal effects, poly unsaturated fatty acids, yolk hormones, [SDV.BA.ZV]Life Sciences [q-bio]/Animal biology/Vertebrate Zoology, [SDV.NEU.PC]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Psychology and behavior, [SDV.NEU.SC]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Cognitive Sciences, [SDV]Life Sciences [q-bio]
Publisher: 'Wiley'
Year: 2017
DOI identifier: 10.1002/dev.21504
OAI identifier: oai:HAL:hal-01483726v1
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