Table 8 Digestibility coefficients of amino acids for duck (3Â weeks old white Pekin ducks)
From: A review of canola meal as an alternative feed ingredient for ducks
Amino acid | Apparent ileal digestibility (%) | ||
|---|---|---|---|
[23] | [47] | [74] | |
Alanine | 66.0 | 79.2 | 79.3 |
Arginine | 71.0 | 87.1 | 87.1 |
Aspartate + asparagine | 60.0 | 74.6 | 74.6 |
Cystine | 67.0 | 70.9 | 70.9 |
Glutamate + glutamine | 81.0 | 85.9 | 85.9 |
Glycine | 59.0 | 74.5 | 74.5 |
Histidine | – | 82.7 | 82.7 |
Isoleucine | 65.0 | 77.7 | 77.7 |
Leucine | 73.0 | 79.4 | 79.4 |
Lysine | 66.0 | 79.0 | 79.0 |
Methionine | 80.0 | 84.8 | 84.7 |
Phenylalanine | 73.0 | 81.5 | 81.5 |
Proline | – | 75.7 | 75.7 |
Serine | 70.0 | 71.4 | 71.4 |
Threonine | 64.0 | 69.6 | 69.6 |
Tryptophan | – | 84.9 | 84.9 |
Tyrosine | – | 76.4 | 76.4 |
Valine | 62.0 | 74.1 | 74.1 |