Fig. 1

Diet and Litter interaction effects on the %G + C profile of caecal bacteria from broilers aged 21 days. In the upper panel, the solid blue line represents the mean %G + C profile of birds fed C diets and placed on clean litter, the solid red line represents the mean %G + C profile of birds fed TAG diets and placed on clean litter, the solid green line shows the mean %G + C of birds fed C diets and placed on reused litter and the solid purple line illustrates the mean %G + C of birds fed TAG diets and placed on reused litter (n = 8). In the lower panel, the solid blue line shows the results from ANOVA and the solid red line marks the threshold of P = 0.05