Interactions based on beta-diversity metrics via ADONIS, where effect of treatment (peptide modifications: Intact casein, enzyme hydrolysate, and acid hydrolysate and <i>Campylobacter jejuni</i> inoculation) was assessed on microbial composition based on time (0, 24, and 48 h).

Bray-Curtis was utilized to describe abundance between the samples and Weighted Unifrac was used to assess phylogenetic differences between microbial communities. Significance was determined at P < 0.05. *Sums of Squares. *Mean Squares. *Projected Residuals: Fit values for metric vs. observation error (residuals). Residuals represent the difference between any data point and the regression line. (XLSX)