Intestinal Mucosal Immunity-Mediated Modulation of the Gut Microbiome by Oral Delivery of Against Pathogenesis in a Laying Hen Model.

() is a protective role that has crucial beneficial functions on intestinal homeostasis. This study aimed to investigate the effects of on the laying performance, egg quality, host metabolism, intestinal mucosal immunity, and gut microbiota of laying hens under the () challenge. A total of 400 45-week-old laying hens were randomly divided into four treatments (CON, EF, SCON, and SEF groups) with five replicates for each group and 20 hens per replicate and fed with a basal diet or a basal diet supplemented with (2.