Table 3.
Calculated energy (kcal/kg DM) and in vitro ileal digestible crude protein (IVID CP, % DM) concentrations of 4 sources of meat meal and 3 sources of meat and bone meal.
| Item | Meat meal |
Meat and bone meal |
|||||
|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 1 | 2 | 3 | |
| IVID CP1 | 73.5 | 71.3 | 59.5 | 51.7 | 50.7 | 50.5 | 37.8 |
| IVDE2 | 5,040 | 4,966 | 4,426 | 4,179 | 3,988 | 3,979 | 3,355 |
| ME3 | 4,565 | 4,492 | 4,034 | 3,806 | 3,624 | 3,638 | 3,065 |
| Adjusted ME4 | 3,905 | 3,832 | 3,375 | 3,146 | 2,964 | 2,979 | 2,405 |
IVDE = in vitro digestible energy; ME = metabolizable energy.
1
IVID CP = concentration of CP × in vitro ileal disappearance of CP.
2
IVDE = concentration of gross energy × in vitro total tract disappearance of DM.
3
ME = 0.97 × IVDE (kcal/kg DM) – 3.86 × CP concentration (% DM) (Sung and Kim, 2021).
4
Adjusted ME energy was calculated using gross energy-to-ME ratio (0.652) based on in vivo data (Adedokun and Adeola, 2005; Olukosi and Adeola, 2009).