Table 4.
Effects of incubation animal diet on in situ DM and NDF disappearance of bermudagrass hay
| Items1 | Diet2 | SEM | P-value | |
|---|---|---|---|---|
| Non-supplemented | Supplemented | |||
| DM disappearance, %DM | ||||
| A fraction | 19.18 | 18.78 | 1.321 | 0.85 |
| B fraction | 29.58 | 28.83 | 1.499 | 0.75 |
| C fraction | 51.23 | 52.38 | 0.927 | 0.47 |
| ED | 34.10 | 32.51 | 0.272 | 0.35 |
| Kd, %/h | 2.55 | 2.58 | 0.272 | 0.94 |
| Lag time, h | 4.37 | 2.39 | 2.289 | 0.60 |
| NDF disappearance, %DM | ||||
| A fraction | 29.46a | 31.10b | 0.345 | 0.07 |
| B fraction | 26.29 | 24.28 | 0.688 | 0.17 |
| C fraction | 44.23 | 44.61 | 0.359 | 0.53 |
| ED | 43.25 | 44.02 | 0.631 | 0.47 |
| Kd, %/h | 2.76 | 3.22 | 0.312 | 0.41 |
| Lag time, h | 7.97 | 13.28 | 2.340 | 0.24 |
Disappearance kinetics: A fraction, immediately soluble; B fraction, fractional disappearance rate; C fraction, undegradable; ED, effective degradability; Kd, disappearance rate (Orskov and McDonald, 1979).
Incubation animal diet: Non-supplemented, received no supplemental DDG cubes during in situ incubation period; Supplemented, received 0.90 kg DDG cubes per d during in situ incubation period.
Least-squares means followed by different superscripts differ within rows (P < 0.05).