Table 8.
Correlation coefficients between the physical characteristics of ingredients, concentration of DE and ME, and apparent total tract digestibility (ATTD) of nutrients in ingredients
| Correlation coefficient1 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Item | Swelling | WBC | Viscosity | DE | ME | ATTD of NDF | ATTD of IDF | ATTD of TDF | ATTD of NSP | ATTD of iNSP |
| Bulk | 0.11 | −0.01 | 0.48 | 0.15 | 0.14 | −0.13 | 0.07 | 0.40 | 0.35 | −0.03 |
| Swelling | 1.00 | 0.89*** | 0.62* | −0.08 | −0.09 | 0.57 | 0.80*** | 0.73** | 0.75** | 0.79** |
| WBC | — | 1.00 | 0.30 | −0.21 | −0.20 | 0.48 | 0.69** | 0.63** | 0.68** | 0.73** |
| Viscosity | — | — | 1.00 | −0.21 | −0.23 | 0.68** | 0.70** | 0.39 | 0.45 | 0.72** |
| DE | — | — | — | 1.00 | 1.00*** | 0.59* | 0.57 | 0.51 | 0.41 | 0.47 |
| ME | — | — | — | — | 1.00 | 0.61* | 0.58* | 0.51 | 0.42 | 0.50 |
| ATTD of NDF | — | — | — | — | — | 1.00 | 0.86*** | 0.83*** | 0.88*** | 0.90*** |
| ATTD of IDF | — | — | — | — | — | — | 1.00 | 0.97*** | 0.97*** | 0.97*** |
| ATTD of TDF | — | — | — | — | — | — | — | 1.00 | 0.98*** | 0.93*** |
| ATTD of NSP | — | — | — | — | — | — | — | — | 1.00 | 0.97*** |
*P < 0.10; **P < 0.05; ***P < 0.01.
1Bulk = bulk density; WBC = water-binding capacity; AEE = acid hydrolyzed ether extract; IDF = insoluble dietary fiber; TDF = total dietary fiber.