Table 2.
Feed composition (g/kg DM, unless stated otherwise), methane emissions (methane production: pCH4 in g CH4/d), and dry matter intake (DMI) used to generate predictions of pCH4, ruminal pH, and acetate to propionate molar ratios using MollyRum14
| Forage | DM (% of FW) | OM | CP | HWSC | Pectin | RFC | aNDF | ADF | Hcell | Cell | RFC:SC | EE | DMI | pCH4 (g/d) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chicory | 11.9 | 80.4 | 11.4 | 15.3 | 7.5 | 22.8 | 23.9 | 18.8 | 5.1 | 10.6 | 1.48 | 3.7 | 666 | 15.1 |
| Chicory | 11.9 | 80.4 | 11.4 | 15.3 | 7.5 | 22.8 | 23.9 | 18.8 | 5.1 | 10.6 | 1.48 | 3.7 | 1114 | 23.8 |
| Ryegrass | 16.5 | 87.3 | 19.7 | 11.4 | 1.0 | 12.4 | 42.3 | 21.8 | 20.4 | 19.1 | 0.31 | 4.1 | 685 | 17.5 |
| Ryegrass | 16.5 | 87.3 | 19.7 | 11.4 | 1.0 | 12.4 | 42.3 | 21.8 | 20.4 | 19.1 | 0.31 | 4.1 | 1053 | 22.7 |
| Bulb turnip | 10.0 | 85.1 | 13.0 | 23.8 | 9.4 | 33.2 | 24.0 | 18.0 | 5.9 | 11.7 | 1.88 | 1.7 | 874 | 18.0 |
| Kale | 13.9 | 86.1 | 16.7 | 17.3 | 8.0 | 25.4 | 20.1 | 12.9 | 7.1 | 7.3 | 1.76 | 3.4 | 866 | 17.0 |
| Forage rape | 11.7 | 86.0 | 19.3 | 19.6 | 8.9 | 28.5 | 23.4 | 16.3 | 7.1 | 10.0 | 1.67 | 3.4 | 899 | 14.7 |
| Swedes | 9.4 | 90.8 | 16.2 | 30.1 | 6.9 | 37.0 | 17.6 | 12.1 | 5.5 | 6.9 | 3.11 | 1.1 | 792 | 13.3 |
| Forage rape | 13.1 | 85.2 | 21.5 | 14.2 | 7.6 | 21.8 | 20.9 | 16.1 | 4.8 | 12.4 | 1.31 | 3.4 | 862 | 11.8 |
| Forage rape | 14.2 | 91.7 | 15.8 | 24.0 | 7.5 | 31.5 | 17.0 | 12.3 | 4.7 | 8.6 | 2.38 | 3.3 | 896 | 16.0 |
| Forage rape | 13.1 | 90.2 | 18.3 | 20.4 | 7.7 | 28.1 | 17.5 | 13.0 | 4.5 | 7.7 | 2.3 | 3.0 | 1173 | 13.2 |
| Forage rape | 11.6 | 90.6 | 16.7 | 24.1 | 7.2 | 31.3 | 18.2 | 13.0 | 5.2 | 8.4 | 2.32 | 2.4 | 1293 | 17.6 |
| Ryegrass | 12.5 | 86.9 | 22.8 | 7.4 | 1.2 | 8.6 | 51.9 | 27.0 | 24.9 | 25.0 | 0.17 | 3.7 | 791 | 18.4 |
| Forage rape | 9.7 | 86.6 | 32.7 | 15.0 | 8.7 | 23.7 | 18.3 | 13.3 | 4.9 | 7.4 | 2.01 | 2.9 | 978 | 8.1 |
| Forage rape | 8.4 | 87.1 | 26.1 | 16.7 | 9.8 | 26.5 | 22.7 | 17.5 | 5.2 | 9.4 | 1.84 | 3.3 | 1454 | 20.8 |
| Forage rape | 10.3 | 87.1 | 26.1 | 16.7 | 9.8 | 26.5 | 22.7 | 17.5 | 5.2 | 9.4 | 1.84 | 3.3 | 1792 | 24.5 |
| Forage rape | 11.1 | 88.1 | 20.2 | 22.8 | 8.7 | 31.4 | 22.5 | 17.0 | 5.5 | 7.8 | 2.39 | 2.9 | 1670 | 23.1 |
| Forage rape | 9.8 | 88.1 | 20.2 | 22.8 | 8.7 | 31.4 | 22.5 | 17.0 | 5.5 | 7.8 | 2.39 | 2.9 | 1629 | 22.7 |
| Forage rape | 10.1 | 88.1 | 20.2 | 22.8 | 8.7 | 31.4 | 22.5 | 17.0 | 5.5 | 7.8 | 2.39 | 2.9 | 1516 | 20.2 |
| Forage rape | 11.6 | 89.1 | 17.1 | 24.1 | 8.3 | 32.4 | 24.0 | 17.0 | 7.0 | 9.6 | 1.99 | 2.7 | 1830 | 25.1 |
| Forage rape | 11.3 | 89.1 | 17.1 | 24.1 | 8.3 | 32.4 | 24.0 | 17.0 | 7.0 | 9.6 | 1.99 | 2.7 | 1824 | 26.9 |
| Bulb turnip | 9.8 | 89.3 | 11.5 | 30.7 | 6.7 | 37.3 | 20.3 | 14.5 | 5.9 | 7.5 | 2.79 | 1.1 | 1042 | 17.3 |
| Leafy turnip | 10.1 | 80.6 | 22.6 | 12.2 | 8.8 | 21.0 | 24.5 | 17.6 | 6.9 | 8.2 | 1.42 | 2.6 | 908 | 12.5 |
| Radish | 9.1 | 81.3 | 23.9 | 10.4 | 8.4 | 18.9 | 24.8 | 18.5 | 6.3 | 8.3 | 1.34 | 2.9 | 658 | 11.0 |
| Forage rape | 13.2 | 85.8 | 17.6 | 14.7 | 10.3 | 25.0 | 27.2 | 20.0 | 7.2 | 7.8 | 1.69 | 3.5 | 948 | 17.2 |
| Bulb turnip | 10.9 | 86.3 | 11.5 | 25.1 | 7.6 | 32.7 | 21.3 | 15.8 | 5.6 | 4.6 | 3.43 | 1.5 | 914 | 22.0 |
| Leafy turnip | 11.9 | 82.8 | 18.7 | 14.3 | 9.0 | 23.3 | 22.6 | 14.8 | 7.8 | 6.7 | 1.81 | 1.8 | 965 | 17.6 |
| Forage rape | 18.9 | 90.0 | 9.5 | 21.0 | 10.3 | 31.3 | 26.2 | 16.1 | 10.1 | 6.4 | 2.18 | 2.1 | 779 | 14.2 |
| Ryegrass | 14.8 | 84.2 | 18.1 | 8.3 | 0.9 | 9.2 | 46.4 | 24.2 | 22.2 | 21.5 | 0.21 | 4.3 | 792 | 15.4 |
| Ryegrass | 19.8 | 90.1 | 16.0 | 12.3 | 1.1 | 13.4 | 44.5 | 23.1 | 21.4 | 21.4 | 0.31 | 3.6 | 929 | 21.2 |
| White clover | 16.6 | 90.5 | 25.5 | 9.8 | 6.5 | 16.3 | 27.6 | 18.3 | 9.3 | 9.8 | 0.85 | 2.4 | 930 | 18.4 |
| Ryegrass | 17.2 | 86.4 | 19.2 | 11.4 | 0.7 | 12.1 | 44.4 | 23.0 | 21.4 | 19.2 | 0.3 | 3.1 | 1100 | 24.5 |
| White clover | 16.2 | 91.1 | 21.4 | 12.5 | 6.5 | 19.0 | 26.9 | 18.3 | 8.6 | 9.0 | 1.04 | 2.2 | 470 | 12.6 |
| Ryegrass | 16.3 | 90.3 | 12.5 | 16.4 | 0.7 | 17.1 | 41.5 | 22.0 | 19.5 | 20.2 | 0.43 | 2.8 | 480 | 12.2 |
| White clover | 16.2 | 91.1 | 21.4 | 12.5 | 6.5 | 19.0 | 26.9 | 18.3 | 8.6 | 9.0 | 1.04 | 2.2 | 1160 | 27.1 |
| Ryegrass | 16.3 | 90.3 | 12.5 | 16.4 | 0.7 | 17.1 | 41.5 | 22.0 | 19.5 | 20.2 | 0.43 | 2.8 | 1190 | 25.9 |
| White clover | 16.0 | 90.3 | 22.0 | 10.2 | 6.1 | 16.9 | 29.6 | 20.3 | 9.3 | 11.6 | 0.57 | 2.3 | 1140 | 25.7 |
| Ryegrass | 18.4 | 89.8 | 11.7 | 12.3 | 0.7 | 13.3 | 46.6 | 23.7 | 22.9 | 21.6 | 0.29 | 2.7 | 1120 | 24.5 |
| Ryegrass | 24.0 | 88.8 | 10.2 | 10.4 | 0.8 | 11.4 | 55.4 | 28.3 | 27.1 | 23.7 | 0.21 | 2.7 | 490 | 13.1 |
| Ryegrass | 24.0 | 88.8 | 10.2 | 10.4 | 0.8 | 11.4 | 55.4 | 28.3 | 27.1 | 23.7 | 0.21 | 2.7 | 720 | 19.5 |
| Ryegrass | 24.0 | 88.8 | 10.2 | 10.4 | 0.8 | 11.4 | 55.4 | 28.3 | 27.1 | 23.7 | 0.21 | 2.7 | 920 | 23.2 |
| Ryegrass | 24.0 | 88.8 | 10.2 | 10.4 | 0.8 | 11.4 | 55.4 | 28.3 | 27.1 | 23.7 | 0.21 | 2.7 | 1070 | 27.1 |
| Ryegrass | 24.0 | 88.8 | 10.2 | 10.4 | 0.8 | 11.4 | 55.4 | 28.3 | 27.1 | 23.7 | 0.21 | 2.7 | 1340 | 31.9 |
DM = dry matter; OM = organic matter; CP = crude protein; aNDF = neutral detergent fiber with a heat stable amylase and inclusive of residual ash, ADF = acid detergent fiber; HSWC = hot water soluble carbohydrates; RFC = readily fermentable carbohydrates (HWSC plus pectin); Hcell = hemicellulose; Cell = cellulose; RFC:SC = ratio of RFC to structural carbohydrates; EE = ether extract.