TABLE 2 .
Different feed intake by and fermentation parameters of groups of eight rams fed Con, 1SW, 3SW, and 5SW dietsa
| Parameter | Con | 1SW | 3SW | 5SW | SEM |
P value |
||
|---|---|---|---|---|---|---|---|---|
| Diets | Linear | Quadratic | ||||||
| Intake (g/day) of: | ||||||||
| DM | 1,841 | 1,759 | 1,893 | 2,013 | 119 | <0.001 | <0.001 | 0.075 |
| OM | 1,688 | 1,610 | 1,733 | 1,830 | 109 | <0.001 | <0.001 | 0.114 |
| CP | 286 | 276 | 299 | 310 | 22 | 0.002 | 0.001 | 0.400 |
| NDF | 493 | 478 | 536 | 569 | 29 | <0.001 | <0.001 | 0.312 |
| ADF | 294 | 295 | 332 | 371 | 22 | <0.001 | <0.001 | 0.222 |
| % Digestibility of: | ||||||||
| DM | 76.1 | 75.0 | 73.9 | 71.3 | 1.67 | 0.105 | ||
| OM | 78.2 | 77.5 | 76.2 | 73.9 | 1.4 | 0.100 | ||
| CP | 70.9 | 69.9 | 67.6 | 64.0 | 2.0 | 0.041 | 0.006 | 0.693 |
| NDF | 51.7 | 50.6 | 52.3 | 46.5 | 3.5 | 0.469 | ||
| ADF | 40.6 | 42.3 | 42.0 | 36.9 | 3.9 | 0.530 | ||
| BWG (kg/day) | 0.21 | 0.23 | 0.25 | 0.26 | 0.02 | 0.789 | ||
| Fermentation | ||||||||
| Total VFAs, mM | 142 | 155 | 154 | 144 | 9 | 0.230 | ||
| Acetate, mol/100 mol | 50.2 | 56.7 | 55.1 | 57.8 | 1.5 | <0.001 | <0.001 | 0.088 |
| Propionate, mol/100 mol | 27.9 | 21.5 | 27.1 | 22.8 | 2.2 | <0.001 | 0.046 | 0.968 |
| Butyrate, mol/100 mol | 18.3 | 18.0 | 14.5 | 15.9 | 2.0 | <0.001 | <0.001 | 0.029 |
| Valerate, mol/100 mol | 2.00 | 2.03 | 2.03 | 1.87 | 0.34 | 0.757 | ||
| Isovalerate, mol/100 mol | 0.59 | 0.62 | 0.36 | 0.48 | 0.08 | <0.001 | <0.001 | 0.003 |
| Isobutyrate, mol/100 mol | 0.64 | 0.62 | 0.40 | 0.53 | 0.09 | <0.001 | <0.001 | <0.001 |
| Acetate/propionate ratio | 1.94 | 2.83 | 2.31 | 2.72 | 0.22 | <0.001 | 0.002 | 0.178 |
| NH3-N concn, mM | 6.5 | 12.5 | 8.5 | 10.6 | 2.8 | <0.001 | 0.159 | 0.238 |
| pH | 5.93 | 5.86 | 5.89 | 6.02 | 0.06 | 0.804 | ||
Con, control; 1SW, 1% DM-based Tasco; 3SW, 3% DM-based Tasco; 5SW, 5% DM-based Tasco.