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Journal articles
Lipids in maternal diet influence yolk hormone levels and post-hatch neophobia in the domestic chick
Abstract : We 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.
https://hal-univ-rennes1.archives-ouvertes.fr/hal-01483726
Contributor : Umr6552 Ethos <>
Submitted on : Monday, March 6, 2017 - 1:13:12 PM
Last modification on : Thursday, January 14, 2021 - 11:27:57 AM
Contributor : Umr6552 Ethos <>
Submitted on : Monday, March 6, 2017 - 1:13:12 PM
Last modification on : Thursday, January 14, 2021 - 11:27:57 AM
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