Fig. 3

The main effect of Litter treatment 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 placed on clean litter and the solid red line represents the mean %G + C profile of birds placed on reused litter (n = 16). 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