Fig. 4

The relative abundance of the 30 most abundant genera plotted for each quarter sample and displayed by cow ID over time. Each bar indicates a quarter sample, where Q1–4 represents the quarter (Q1: right back, Q2: left back, Q3: right front, Q4: left front) and S1–6 represents the sampling number. The asterisks indicate samples with recorded IMI (red, > 10 cultured colonies per 0.1 mL), SCC > 100,000/mL (blue) or both (black)