Table 6.
Apparent total tract digestibility of gross energy, digestible energy, and metabolizable energy in test ingredients determined by difference procedure (Exp. 1)1
| Item2 | SDPP 1 | SDPP 2 | SEM | P-value |
|---|---|---|---|---|
| Apparent total tract digestibility of gross energy, % | 98.7 | 96.4 | 2.2 | 0.478 |
| Digestible energy, kcal/kg, as-is basis | 4,799 | 4,469 | 105 | 0.046 |
| Digestible energy, kcal/kg, dry matter basis | 5,246 | 4,649 | 112 | 0.003 |
| Metabolizable energy, kcal/kg, as-is basis3 | 4,353 | 4,048 | 102 | 0.055 |
| Metabolizable energy, kcal/kg, dry matter basis | 4,758 | 4,212 | 108 | 0.004 |
1Data are least square means of 7 observations for spray-dried plasma protein (SDPP) 1 and 8 observations for SDPP 2.
2Spray-dried plasma protein 1 was sourced from APC Inc. (Ankeny, IA); SDPP 2 was sourced from NongHyup Feed Inc., LTD. (Seoul, Korea).
3Metabolizable energy was calculated based on Sung and Kim (2021) using the following equation: metabolizable energy = 0.97 × digestible energy – 3.86 × crude protein with root mean square of error = 120 and R2 = 1.00.