| Presence of Bacteroidia (454, class) | Neutrophils | 0.673 | 0.0028 |
| Presence of Erysipelotrichia (454, class) | | 0.523 | 0.0309 |
| Erysipelotrichia (454, OTU numbers) | | 0.636 | 0.006 |
| Counts of Staphylococcus spp. (qPCR) | | 0.448 | 0.002 |
| Total OTU numbers (454, phylum) | Sperm motility | −0.472 | 0.0551 |
| Bacteroidetes (454, phylum, OTU numbers) | | −0.518 | 0.0328 |
| Bacteroidia (454, class, OTU numbers) | | −0.498 | 0.0411 |
| Proteobacteria (454, phylum, OTU numbers) | | −0.661 | 0.0036 |
| Alphaproteobacteria (454, class, OTU numbers) | | −0.471 | 0.0551 |
| Sphingobacteria (454, class, OTU numbers) | | −0.635 | 0.0006 |
| Alphaproteobacteria (454, OTU numbers)* | Embryo quality (Grade 1, 2, 3) | 0.413 | 0.0260 |
