Table 11.
Nitrogen (N) balance and microbial N yield.
| Item | VWP in concentrate, % DM |
SEM |
P - value |
|||
|---|---|---|---|---|---|---|
| 0 | 10 | 20 | 30 | |||
| N intake, g/d | 63.22 | 62.37 | 62.23 | 64.05 | 7.79 | 0.975 |
| Fecal N, g/d | 20.97 | 18.51 | 18.87 | 19.92 | 3.95 | 0.704 |
| Urinary N, g/d | 7.45 | 7.75 | 9.00 | 8.18 | 0.10 | 0.071 |
| Total N excretion, g/d | 28.42 | 26.26 | 27.87 | 28.09 | 4.32 | 0.827 |
| N balance, g/d | 34.81 | 36.12 | 34.36 | 35.95 | 5.49 | 0.931 |
| Microbial N yield, g/d | 33.84 | 42.30 | 43.06 | 39.73 | 10.23 | 0.612 |
| Microbial N yield, g/kg DOMR | 18.67 | 21.77 | 21.68 | 19.18 | 3.98 | 0.785 |
VWP = processed vegetable waste; SEM = standard error of mean; DOMR = digestible organic matter in the rumen.