Table 4.
Jejunal digesta viscosity and AID in nursery pigs fed with β-mannanase in experiment 11.
| Item | β-mannanase, U2/kg | SEM | P value | ||||
|---|---|---|---|---|---|---|---|
| 0 | 200 | 400 | 600 | Linear | Quadratic | ||
| Jejunal digesta viscosity, cP3 | 5.23 | 4.42 | 3.83 | 4.38 | 0.42 | 0.076 | 0.085 |
| AID4, % | |||||||
| Dry matter | 66.0 | 55.7 | 66.3 | 65.1 | 3.7 | 0.571 | 0.134 |
| Energy | 64.3 | 53.4 | 64.5 | 64.7 | 3.9 | 0.395 | 0.093 |
| NDF5 | 35.0 | 36.2 | 35.0 | 33.7 | 8.4 | 0.800 | 0.770 |
| ADF6 | 20.3 | 23.6 | 20.8 | 19.0 | 8.9 | 0.785 | 0.630 |
1Each value in the table represents means of 12 pigs (1 pig per metabolic cage).
2One unit of β-mannanase activity was defined as the amount of enzyme required to releases 1 µmole of mannose reducing sugars equivalents per minute from 1.0% locust bean gum in 200 mM sodium phosphate buffer, pH 6.0 at 50 °C.
3Centipoise.
4AID: apparent ileal digestibility.
5NDF: neutral detergent fiber.
6ADF: acid detergent fiber.