Table 7.
Apparent ileal digestibility (AID) and standardized ileal digestibility (SID) of crude protein and amino acids (AA) in test ingredients determined by difference procedure (Exp. 1)1
| Item, %2 | AID | SEM | P-value | SID3 | SEM | P-value | ||
|---|---|---|---|---|---|---|---|---|
| SDPP 1 | SDPP 2 | SDPP 1 | SDPP 2 | |||||
| Crude protein | 85.3 | 90.0 | 1.3 | 0.023 | 87.8 | 92.8 | 1.3 | 0.018 |
| Indispensable AA | ||||||||
| Arg | 91.0 | 97.1 | 1.0 | 0.001 | 92.4 | 98.6 | 1.0 | 0.001 |
| His | 88.9 | 94.5 | 1.0 | 0.002 | 89.9 | 95.7 | 1.0 | 0.002 |
| Ile | 85.8 | 94.2 | 1.4 | <0.001 | 87.3 | 95.8 | 1.4 | <0.001 |
| Leu | 88.4 | 95.4 | 1.1 | <0.001 | 89.3 | 96.4 | 1.1 | <0.001 |
| Lys | 88.8 | 93.7 | 0.9 | 0.002 | 89.8 | 94.8 | 0.9 | 0.002 |
| Met | 81.0 | 87.5 | 1.9 | 0.032 | 83.9 | 90.0 | 1.9 | 0.042 |
| Phe | 89.0 | 95.4 | 1.0 | <0.001 | 90.0 | 96.5 | 1.0 | <0.001 |
| Thr | 84.2 | 92.2 | 1.3 | 0.001 | 86.1 | 94.2 | 1.3 | <0.001 |
| Trp | 83.3 | 91.6 | 1.7 | 0.005 | 84.9 | 93.3 | 1.7 | 0.004 |
| Val | 86.8 | 94.5 | 1.1 | <0.001 | 88.1 | 95.9 | 1.1 | <0.001 |
| Dispensable AA | ||||||||
| Ala | 84.8 | 92.2 | 1.4 | 0.003 | 86.6 | 94.2 | 1.4 | 0.002 |
| Asp | 82.2 | 89.9 | 1.7 | 0.006 | 83.7 | 91.4 | 1.7 | 0.006 |
| Cys | 66.9 | 81.1 | 2.7 | 0.003 | 68.0 | 82.1 | 2.7 | 0.003 |
| Glu | 77.3 | 83.5 | 2.3 | 0.075 | 78.6 | 84.9 | 2.3 | 0.070 |
| Gly | 82.5 | 95.9 | 3.1 | 0.010 | 87.8 | 101.0 | 3.1 | 0.010 |
| Pro | 91.5 | 105.7 | 5.9 | 0.114 | 98.0 | 113.0 | 5.9 | 0.098 |
| Ser | 83.8 | 93.3 | 1.5 | <0.001 | 85.7 | 95.3 | 1.5 | <0.001 |
| Tyr | 90.7 | 96.7 | 1.0 | <0.001 | 91.8 | 97.9 | 1.0 | <0.001 |
1Data are least square means of 8 observations for spray-dried plasma protein (SDPP) 1 and 7 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).
3Values for the SID of crude protein and AA were calculated by correcting the AID values for basal endogenous losses of crude protein and AA from Sung et al. (2020). Basal endogenous losses (g/kg feed intake) used for the calculation of SID values were crude protein, 19.90; Arg, 0.64; His, 0.25; Ile, 0.41; Leu, 0.70; Lys, 0.67; Met, 0.13; Phe, 0.44; Thr, 0.85; Trp, 0.17; Val, 0.62; Ala, 0.80; Asp, 1.09; Cys, 0.27; Glu, 1.46; Gly, 1.45; Pro, 2.88; Ser, 0.84; and Tyr, 0.37.