Table 1.
Top classified families and genera correlating with average daily gains (ADG), urinary ergot alkaloids (UEAs) and temperature humidity index (THI) in steers grazing toxic (n = 6; E+) tall fescue for a 26-day grazing trial.
| Family | Genus | Number of OTUs | Spearman’s R | P-value |
|---|---|---|---|---|
| ADG (+r) | ||||
| Lachnospiraceae | 13 | 0.458 | 0.027 | |
| Dorea | 1 | 0.460 | 0.024 | |
| Ruminococcaceae | 9 | 0.462 | 0.025 | |
| Oscillospira | 1 | 0.454 | 0.026 | |
| Ruminococcus | 1 | 0.426 | 0.038 | |
| Bacteroidaceae | 3 | 0.499 | 0.023 | |
| 5-7N15 | 3 | 0.499 | 0.023 | |
| Coriobacteriaceae | 3 | 0.471 | 0.028 | |
| Erysipelotrichaceae | 2 | 0.473 | 0.026 | |
| p-75-a5 | 1 | 0.412 | 0.045 | |
| ADG (−r) | ||||
| Lachnospiraceae | 5 | −0.494 | 0.016 | |
| Butyrivibrio | 2 | −0.451 | 0.029 | |
| Ruminococcaceae | 3 | −0.440 | 0.033 | |
| Clostridium | 1 | −0.406 | 0.049 | |
| Ruminococcus | 1 | −0.480 | 0.018 | |
| THI (+r) | ||||
| Lachnospiraceae | 24 | 0.417 | 0.019 | |
| Butyrivibrio | 3 | 0.394 | 0.018 | |
| Blautia | 1 | 0.441 | 0.007 | |
| Dorea | 1 | 0.550 | 0.001 | |
| Ruminococcaceae | 12 | 0.395 | 0.023 | |
| Ruminococcus | 6 | 0.400 | 0.020 | |
| Coriobacteriaceae | 9 | 0.417 | 0.019 | |
| Olsenella | 4 | 0.455 | 0.015 | |
| Enterococcus | 1 | 0.393 | 0.018 | |
| [Mogibacteriaceae] | 7 | 0.446 | 0.016 | |
| Mogibacterium | 3 | 0.395 | 0.020 | |
| Clostridiaceae | 3 | 0.453 | 0.011 | |
| Clostridium | 2 | 0.399 | 0.016 | |
| SMB53 | 1 | 0.600 | 0.0003 | |
| THI (−r) | ||||
| Ruminococcaceae | 15 | −0.470 | 0.010 | |
| Oscillospira | 2 | −0.386 | 0.020 | |
| Papillibacter | 1 | −0.362 | 0.030 | |
| Lachnospiraceae | 12 | −0.423 | 0.016 | |
| Clostridium | 2 | −0.425 | 0.009 | |
| [Mogibacteriaceae] | 2 | −0.382 | 0.024 | |
The number of OTUs within a family/genus, average Spearman correlation coefficients (|r| > 0.30), and average P-values (P < 0.05) are presented.