Table 4.
Effect of supplemental protein on ruminal VFA molar concentrations in steers fed low-quality forage and provided supplemental protein
| Item | CON1 | CSM1 | DDGS1 | SEM2 |
|---|---|---|---|---|
| Acetate, mol/100 mol | 79.1a | 76.1b | 69.4c | 0.56 |
| Propionate, mol/100 mol | 14.1a | 15.6b | 19.4c | 0.32 |
| Butyrate, mol/100 mol | 5.6a | 6.7b | 10.3c | 0.23 |
| Isobutyrate, mol/100 mol | 0.15 | 0.27 | 0.05 | 0.06 |
| Isovalerate, mol/100 mol | 0.87 | 0.73 | 0.22 | 0.29 |
| Valerate, mol/100 mol | 0.21a | 0.48b | 0.67b | 0.08 |
| A:P3 | 5.64a | 4.89b | 3.60c | 0.11 |
1Treatments were: CON, no protein supplement; CSM, CSM at 0.29% of BW daily; DDGS, DDGS + urea supplemented at 0.41% of BW daily.
2Pooled SE of the treatment means.
3Acetate to propionate ratio.
a–cWithin a row, means with unlike superscripts differ (P < 0.05).