Figure 2.

Effects of vaccination of chickens with the Ent–KLH conjugate on growth performance, immune organ development, and gut microbiota. (A) Chicken body weight gain. Each symbol represents the body weight gain of each individual chicken between ages of 7 and 49 days. (B) The weight percentage of each immune organ (bursa, spleen or thymus) to its body weight at 49 days old. (C) The Shannon diversity and the Chao richness (OTU) based on 16S rDNA amplicon sequences of the cecal samples. (D) Relative abundance of the eight dominant phyla in the cecum between Ent–KLH and PBS-control groups.