Fig. 4

Relative abundance heatmap of the 20 core ASVs found in all sample type categories and hatchery areas (Core20). Text above the heatmap defines the different hatchery areas (EI = Egg inventory, PrI = Pre-in ovo incubation, PoI = Post-in ovo incubation, PR = Chick processing, T = Transport, FAC = General facility) while the text below defines the sample type category. The Core20 ASVs, preceded by the ASV number, are listed to the left of the heatmap, and the relative abundances for each ASV are presented within each cell of the heatmap. Any ASVs showing 0% indicates that their relative abundance is between 0.01 and 0.049%. The higher the relative abundance, the darker red the cell is shaded