Table 4.
Measures of alpha diversity of ruminal archaea community in fermenters associated with the solid phase as determined using QIIME and 16S rRNA sequences.
| Estimators | Osmolality1 | Temperature (°C) | Betaine2 | P value$ | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Normal | Hyper | SE∗ | 39.5 | 42 | SE∗ | Control | Low | High | SE∗ | O 3 | T 3 | B 3 | Interaction4 | |
| ACE | 1622.5 | 1430.2 | 32.8 | 1533.2 | 1519.5 | 32.9 | 1469 | 1557.3 | 1552.2 | 38.03 | <0.001 | 0.71 | 0.11 | (B × T) | 
| Shannon index | 4.83 | 4.794 | 0.04 | 4.84 | 4.77 | 0.04 | 4.74 | 4.87 | 4.82 | 0.05 | 0.50 | 0.23 | 0.19 | |
| Simpson index | 0.909 | 0.9093 | 0.002 | 0.911 | 0.907 | 0.002 | 0.903 | 0.912 | 0.911 | 0.003 | 0.94 | 0.29 | 0.11 | |
| Singles | 417.2 | 368.35 | 8.90 | 394.9 | 390.6 | 8.91 | 402.2 | 402.2 | 397.5 | 10.19 | <0.001 | 0.66 | 0.12 | (B × T) | 
1Normal osmolality ~ 295 mOsmol kg−1; hyperosmolality ~ 420 mOsmol kg−1. 2Betaine levels: control (0), low (51), and high (286) ppm. 3O: osmolality; T: temperature; B: betaine. 4Only effects with significance (P ≤ 0.05) or tendency marked with bracket (P ≤ 0.10) are listed. ∗Standard error. $P value is for testing the fixed effect of osmolality (n = 36), temperature (n = 36), and betaine addition (n = 24). Significance: P < 0.05.