Table 2.
Nutrient intakes and nitrogen balance in lambs fed diets differing in C:F and level of UDP
| Item | C:F 40:60 | C:F 60:40 | SEM | p-value | ||||
|---|---|---|---|---|---|---|---|---|
|
|
|
|
||||||
| High UDP | Low UDP | High UDP | Low UDP | C:F | UDP | C:F×UDP | ||
| Intake (g/d) | ||||||||
| DM | 1490.1 | 1615.5 | 1426.0 | 1541.2 | 152.8 | 0.90 | 0.003 | 0.34 |
| OM | 1395.8 | 1501.0 | 1349.3 | 1460.3 | 143.0 | 0.82 | 0.002 | 0.27 |
| N balance (g/d) | ||||||||
| N intake | 25.0 | 27.6 | 24.2 | 26.6 | 2.17 | 0.17 | 0.005 | 0.22 |
| Fecal N | 10.3 | 11.7 | 10.1 | 11.1 | 1.09 | 0.19 | 0.46 | 0.27 |
| Urinary N | 10.7 | 13.0 | 6.50 | 7.52 | 1.00 | 0.014 | 0.045 | 0.45 |
| N retention | 4.2 | 3.1 | 7.8 | 7.9 | 1.99 | 0.008 | 0.75 | 0.52 |
| N retention/N intake (%) | 16.8 | 11.2 | 32.3 | 29.5 | 4.27 | 0.018 | 0.030 | 0.41 |