| Slope angle | Periods | |||||
| Whole fattening | Growtha | Finishinga | ||||
| N | SDEE | N | SDEE | N | SDEE | |
| 4˚ | 39 | 1.3030 | 21 | 1.2694 | 18 | 1.3421 |
| 6˚ | 39 | 1.4137 | 21 | 1.4122 | 18 | 1.4155 |
| SEM |
| 0.0123 |
| 0.0197 |
| 0.0110 |
| P |
| 0.0001 |
| 0.0106 |
| <0.0001 |