ArticleFrontiers in microbiology2026
Limited vertical transmission of microbiomes through the chorioallantoic membrane affects intestine development and metabolic pathways in broiler embryos.
Article in Frontiers in microbiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Introduction: The chorioallantoic membrane (CAM) in chickens is a vascularized structure that plays a crucial role in embryonic growth and development by facilitating gas exchange, nutrient transport, and waste removal. Understanding the microbial diversity and immune status of the CAM can provide valuable insights into the gut microbiome and post-hatch growth. Embryonic thermal manipulation (TM) represents an effective approach for enhancing broiler production. This study investigated the effects of TM on CAM and intestinal microbiota composition, metabolic pathways, and immunity-related gene markers. Methods: For embryonic TM, fertile Cobb 500 eggs ( Results: Two newly identified bacterial genera, Conclusion: The study provides initial evidence of limited vertical transmission of microbiomes through the CAM into the intestine, along with characterization of CAM microbiomes. Embryonic TM significantly influenced both the diversity of CAM and intestinal microbiota, their associated metabolic pathways, and CAM immunity.
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