Fig. 2
From: Characterization of microbiota signatures in Iberian pig strains using machine learning algorithms

Comparison of three alpha-diversity indices (Chao1, Pielou evenness and Shannon index) between age category groups, animal batches and genetic groups. Wilcoxon rank-sum test was used for comparisons between the four levels of each factor, with the correction for multiple test comparisons, FDR p-value < 0.05. The graph shows values of diversity indices on the Y-axis and factors on the X-axis, including Age category groups (1: 298–344 days; 2:345–362 days; 3:363–383 days and 4:384–494 days), Batch groups (9, 10, 11, 12) and genetic groups (Strains and their reciprocal crosses: EE, ER, RE, RR). No significant differences in alpha-diversity metrics were found between genetic groups. For age category and batch, groups with the same letter or sharing a letter, are not significantly different from each other