%0 Journal Article
%A Peña Vidal, Nuria
%A Lafuente, Irene
%A Sevillano, Ester
%A Feito Hermida, Javier
%A Allendez, Gastón
%A Crispie, Fiona
%A Cintas Izarra, Luis Miguel
%A Cotter, Paul D.
%A Hernández Cruza, Pablo Elpidio
%A Borrero Del Pino, Juan
%A Muñoz Atienza, Estefanía
%T Exploring the Functional Potential of the Broiler Gut Microbiome Using Shotgun Metagenomics
%D 2025
%U https://hdl.handle.net/20.500.14352/124895
%X Background/Objectives: Antimicrobial peptides (AMPs) have emerged as promising alternatives to conventional antibiotics in livestock, offering a sustainable strategy for controlling bacterial pathogens in food production systems. In addition to their direct antimicrobial effects, AMPs play a key role in modulating host-associated microbiomes, influencing both microbial composition and function. Advances in metagenomic sequencing and bioinformatic tools now enable comprehensive exploration of AMP diversity and activity within complex microbial ecosystems.  Methods: In this study, we employed Illumina-based next-generation sequencing (NGS) to analyze intestinal contents from six gut sections of broiler chickens obtained from a Spanish slaughterhouse.Results: Through de novo assembly and bioinformatic annotation, we identified biosynthetic gene clusters (BGCs) encoding ribosomally synthesized and post-translationally modified peptides (RiPPs), other specialized bioactive secondary metabolites, antimicrobial resistance genes (ARGs), virulence factor genes (VFGs), and a diverse microbial community. Among all gut sections, the cecum exhibited the highest genetic richness, characterized by a high diversity of RiPP-like clusters and antimicrobial resistance determinants.Conclusions: These findings highlight the poultry gut, particularly the cecum, as a significant reservoir of antimicrobial peptides (AMPs) with potential implications in antibiotic-free poultry production and enhanced food safety
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