Fig. 1

Alpha and beta diversity of control versus Cryptosporidium-positive and Day 1–3 versus Day 4–7 sampling groups. A Species richness of control (n = 30) and Cryptosporidium-positive (n = 30) groups; T-test, p = 0.67. B Shannon index of control (n = 30) and Cryptosporidium-positive (n = 30) groups; Wilcoxon, p = 0.81. C Bray Curtis PCoA ordination plot of the control (n = 30) and Cryptosporidium-positive (n = 30) groups; PERMANOVA, p = 0.21. D Species richness of calves sampled on Day 1–3 (n = 20) versus Day 4–7 (n = 40); T-test, p = 0.016. E Shannon index of calves sampled on Day 1–3 (n = 20) versus Day 4–7 (n = 40); Wilcoxon, p = 0.0003. F Bray Curtis PCoA ordination plot of calves sampled on Day 1–3 (n = 20) versus Day 4–7 (n = 40); PERMANOVA, p = 0.001