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Thermal conditioning of quail embryos has transgenerational and reversible long‑term effects

Journal of Animal Science and Biotechnology 2023年第6期14卷 2428-2438页

作者： Anais Vitorino Carvalho Christelle Hennequet‑Antier Romuald Rouger joel delaveau Thierry Bordeau Sabine Crochet Nathalie Courousse Frederique Pitel Anne Collin Vincent Coustham INRAE Universite de ToursBOA37380 ToursNouzillyFrance INRAE CNRSIFCEUniversite de ToursPRC37380 ToursNouzillyFrance Universite Paris-Saclay INRAEMaIAGE78350 Jouy‑en‑JosasFrance INRAE Bioinf OmicsUniversite Paris-SaclayMIGALE Bioinformatics Facility78350 Jouy‑en‑JosasFrance SYSAAF 37380 NouzillyFrance INRAE PEAT37380 NouzillyFrance INRAE INPTENVTUniversite de ToulouseGenPhySE31326 Castanet‑TolosanFrance INRAE Universite de Pau&Pays de L’AdourNuMeAE2S UPPAAquapole64310 Saint‑Pee‑Sur‑NivelleFrance

Background In the current context of global warming,thermal manipulation of avian embryos has received increasing attention as a strategy to promote heat tolerance in avian species by simply increasing the egg incubation ***,because of their likely epigenetic origin,thermal manipulation effects may last more than one generation with consequences for the poultry *** this work,a multigenerational and transgenerational analysis of thermal manipulation during embryogenesis was performed to uncover the long-term effects of such *** Thermal manipulation repeated during 4 generations had an effect on hatchability,body weight,and weight of eggs laid in Japanese quails,with some effects increasing in importance over ***,the effects on body weight and egg weight could be transmitted transgenerationally,suggesting non-genetic inheritance *** hypothesis is reinforced by the observed reversion of the effect on growth after five unexposed ***,a beneficial effect of thermal manipulation on heat tolerance was observed a few days after hatching,but this effect was not *** Our multigenerational study showed that thermal conditioning of quail embryos has a beneficial effect on post-hatch heat tolerance hampered by transgenerational but reversible defects on *** that no genetic variability underlies these changes,this study provides the first demonstration of epigenetic inheritance of traits induced by environmental temperature modification associated with long-term impacts in an avian species.

关键词： Avian Embryo Programming Temperature Transgenerational inheritance

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