Table 2. Top 10 bacterial genera identified in the rumen of beef calves that were supplemented or not in a creep feeding system.
| Average Relative Abundance (%) | ||||
|---|---|---|---|---|
| Bacterial Genera | Overall Abundance | Non-Supplemented Calves | Supplemented Calves | P-value1 |
| Prevotella | 20.75 | 18.28 | 23.22 | 0.01 |
| Treponema | 3.76 | 3.72 | 3.79 | 0.90 |
| CF231 | 2.60 | 2.64 | 2.57 | 0.87 |
| RFN20 | 2.12 | 2.24 | 2.00 | 0.57 |
| Fibrobacter | 1.92 | 2.30 | 1.53 | 0.03 |
| Methanobrevibacter | 1.72 | 0.81 | 2.62 | 0.06 |
| Anaeroplasma | 1.27 | 1.34 | 1.19 | 0.52 |
| Pseudobutyrivibrio | 1.23 | 1.09 | 1.36 | 0.17 |
| YRC22 | 1.17 | 1.18 | 1.16 | 0.87 |
| Ruminococcus | 1.12 | 0.93 | 1.31 | 0.18 |
1 P-value for the contrast between supplemented and non-supplemented calves.