Fig. 5

Microbial interaction network and colonization resistance of piglet's fecal microbiata at different time points. a The network diagram represents the microbial interaction network within the fecal microbiota of piglets at three different time points. Each point in the network corresponds to a microbial taxon, and its size represents the relative abundance of the taxon. The color of each point represents its taxonomic classification. The connections (lines) between points indicate the positive or negative correlation between taxa. Positive correlations are depicted in red, while negative correlations are depicted in blue. b The keystone species within the microbial interaction network at each time point. The Y-axis represents the names of the species, while the X-axis represents the corresponding hub score, which indicates the importance of the species in maintaining the network structure. c The line graph depicts the evaluation of network robustness by employing a random removal method of species to assess the network's ability to withstand interference. The X-axis represents the percentage of randomly removed microbial species, incremented by 0.05 at each step, while the Y-axis represents the calculated network robustness. The robustness values at different time points are represented by different colored lines, illustrating the changes in network robustness over the course of time. d The boxplot illustrates the variation in functional redundancy across different groups. The individual points on the plot represent each sample within the respective group, showing the specific functional redundancy value for that sample