Fig. 4

Principal components analysis (PCA) of complete intestinal transcriptomics dataThe x-axis depicts principal component 1 (PC1) and y-axis depicts principal component 1 (PC2). Each day is represented by a different symbol (day 1, square; day 5, circle; and day 14, triangle), and each treatment within a particular day by a colour (day 1, grey; day 5, where ‘WA’ is blue and ‘A’ is cyan; and day 14 where ‘WA’ is red and ‘A’ is orange). In total there are 5 treatment-day combinations consisting of up to 8 points, where each point represents 1 pool consisting of 10 chicken. Abbreviations: WA1, without antibiotic day 1; WA5, without antibiotic day 5; A5, with antibiotic day 5; WA14, without antibiotic day 14; A14, with antibiotic day 14