Table 3.
Standardized amino acid digestibilities of plant and yeast protein concentrates calculated using the precision-fed rooster assay1
| %, DM2 basis | Treatment | |||||
|---|---|---|---|---|---|---|
| Essential amino acid | Pea protein | Potato protein | Faba bean protein | Soy protein concentrate | Dried yeast | SEM |
| Arginine | 96.3 | 96.1 | 94.6 | 95.9 | 95.2 | 0.909 |
| Histidine | 93.7 | 93.6 | 91.1 | 94.4 | 91.7 | 1.409 |
| Isoleucine | 92.4 | 94.8 | 92.8 | 94.1 | 92.2 | 1.063 |
| Leucine | 93.2 | 95.5 | 93.3 | 93.5 | 94.1 | 1.062 |
| Lysine | 93.1a | 93.6a | 89.8ab | 93.1a | 88.4b | 1.302 |
| Methionine | 88.5bc | 95.4a | 88.0c | 93.1ab | 93.6a | 1.582 |
| Phenylalanine | 93.3 | 95.3 | 93.3 | 94.4 | 93.3 | 1.023 |
| Threonine | 92.5 | 94.1 | 90.5 | 92.0 | 86.1 | 1.835 |
| Tryptophan | 93.4abc | 94.6ab | 93.2bc | 96.3a | 91.7c | 0.972 |
| Valine | 91.8 | 94.6 | 91.4 | 93.1 | 91.8 | 1.357 |
a,bMeans within a row with different superscript letters are different (P < 0.05).
1 n = 4 cecectomized roosters per treatment.
2DM = dry matter.