Table 2.
experiment 1: effects of corn processing on the soluble fraction (%) of dry matter, starch, crude protein, fat, fiber, and minerals
| Nutrient disappearance, % | Whole shelled corn | Ground corn | SEM1 | Contrast P-value2 | ||||
|---|---|---|---|---|---|---|---|---|
| No screen | 6-mm screen | 1-mm screen | Grinding | Screen | Screen size | |||
| Dry matter | 0.00 | 7.75 | 22.0 | 38.1 | 0.559 | <0.01 | <0.01 | <0.01 |
| Total starch | 1.04 | 9.20 | 22.5 | 38.3 | 0.813 | <0.01 | <0.01 | <0.01 |
| Crude protein | -0.384 | -1.12 | 12.1 | 30.6 | 0.765 | <0.01 | <0.01 | <0.01 |
| Neutral detergent fiber | 3.60 | 12.4 | 34.0 | 36.9 | 2.26 | <0.01 | <0.01 | 0.38 |
| Acid detergent fiber | 3.17 | 5.63 | 28.9 | 41.2 | 2.85 | <0.01 | <0.01 | <0.01 |
| Acid-hydrolyzed fat | 12.9 | 22.5 | 36.1 | 53.7 | 6.2 | <0.01 | <0.01 | 0.05 |
| P | -0.792 | 2.86 | 27.3 | 63.4 | 1.39 | <0.01 | <0.01 | <0.01 |
| Mg | -6.00 | 7.85 | 21.2 | 56.7 | 1.62 | <0.01 | <0.01 | <0.01 |
| K | 6.63 | 24.3 | 54.4 | 85.5 | 0.904 | <0.01 | <0.01 | <0.01 |
| S | -0.0322 | 5.95 | 18.2 | 30.7 | 1.14 | <0.01 | <0.01 | <0.01 |
| Zn | 4.10 | 2.07 | 30.7 | 60.2 | 1.63 | <0.01 | <0.01 | <0.01 |
| Fe | 7.99 | 8.40 | 43.6 | 63.8 | 6.38 | <0.01 | <0.01 | 0.03 |
| Mn | 8.31 | 14.0 | 35.0 | 56.8 | 2.09 | <0.01 | <0.01 | <0.01 |
SEM = standard error of the mean (n = 10).
Grinding = whole shelled corn versus others; screen = no screen versus 6-mm screen and 1-mm screen; Screen size = 6-mm screen versus 1-mm screen.