Table 5.
Effects of Enogen Feed Corn and processing on total tract digestibility and ruminal characteristics (Exp. 2)
| Item | Corn grain source1 | SEM3 | P-value | |||||
|---|---|---|---|---|---|---|---|---|
| CON | EFC | |||||||
| Corn processing2 | ||||||||
| DR | WS | DR | WS | Process | Source | Process × source | ||
| No. of observations | 7 | 7 | 6 | 7 | ||||
| Dry matter intake, kg/d | 8.21 | 7.68 | 7.75 | 8.14 | 0.43 | 0.80 | 0.99 | 0.11 |
| Ruminal | ||||||||
| pH4 | 5.81 | 5.93 | 5.84 | 5.87 | 0.06 | 0.15 | 0.82 | 0.37 |
| Ammonia, mM4 | 2.79 | 2.38 | 3.63 | 2.80 | 0.73 | 0.32 | 0.30 | 0.73 |
| Total VFA, mM4 | 109.4 | 107.0 | 102.1 | 109.5 | 5.27 | 0.45 | 0.45 | 0.14 |
| Acetate, molar %4 | 62.0 | 61.4 | 60.8 | 60.3 | 1.33 | 0.68 | 0.34 | 0.95 |
| Propionate, molar %4 | 24.5 | 25.1 | 24.4 | 26.4 | 1.38 | 0.33 | 0.65 | 0.60 |
| Butyrate, molar %4 | 9.7 | 9.5 | 10.6 | 9.5 | 0.60 | 0.24 | 0.41 | 0.36 |
| Isobutyrate, molar %4 | 1.22 | 1.38 | 1.40 | 1.30 | 0.07 | 0.62 | 0.47 | 0.07 |
| Valerate, molar %4 | 1.42 | 1.45 | 1.69 | 1.44 | 0.09 | 0.18 | 0.10 | 0.09 |
| Isovalerate, molar %4 | 1.11 | 1.13 | 1.17 | 1.06 | 0.12 | 0.65 | 0.99 | 0.52 |
| Liquid passage rate, %/h | 9.5 | 8.8 | 7.4 | 8.4 | 0.67 | 0.77 | 0.01 | 0.09 |
| Digestibility, % | ||||||||
| Dry matter | 58.4 | 56.2 | 62.0 | 63.2 | 2.53 | 0.83 | 0.04 | 0.50 |
| Organic matter | 61.5 | 59.3 | 64.8 | 66.0 | 2.45 | 0.82 | 0.04 | 0.46 |
| Neutral detergent fiber | 51.1 | 47.0 | 51.5 | 53.5 | 4.18 | 0.79 | 0.41 | 0.46 |
| Acid detergent fiber | 48.5 | 42.0 | 50.0 | 54.5 | 5.20 | 0.85 | 0.17 | 0.28 |
| Starch | 84.7 | 85.1 | 86.4 | 90.4 | 2.90 | 0.37 | 0.16 | 0.47 |
CON, control (yellow # corn corn); EFC, Enogen Feed Corn.
DR, dry rolled; WS, whole shelled.
Largest value among treatments reported.
Average of values collected at 0, 2, 4, 6, 8, 12, 18, and 24 h after feeding on day 15 of each period.