Figure 2.

Alpha diversity in faecal samples of dogs. Box plots showing alpha diversity in samples using the species richness estimators Observed Species, Chao1 and Shannon index. Comparisons of the species richness estimators were done using the Kruskal–Wallis test (vegetarian diet (basic diet) and the vegetarian diet supplemented with feather meal as well as either cornmeal (basic diet + cornmeal), fermented rye (basic diet + fermentate) or rye (basic diet + rye)).