Anim. feed sci. technol. Anim. feed sci. technol. Effect of the dietary administration pattern of silver nanoparticles on growth performance, biodiversity of digestive microbiota and tissue retention in broiler chickens Zaoui Yahya Belanche Alejandro Universidad de Zaragoza Ben-Jeddou Khaoula Jiménez García-Alcalá María Sierra Universidad de Zaragoza Fondevila Guillermo Universidad de Zaragoza Fondevila Manuel Universidad de Zaragoza 2024 research-article