Item | Protein source | Protein level | SEM | P | ||||
---|---|---|---|---|---|---|---|---|
Cottonseed meal | Soybean meal | 12 % | 14 % | Source | Level | Source × Level | ||
Arginine | 19.36 | 18.50 | 18.76 | 19.10 | 0.85 | 0.50 | 0.79 | 0.70 |
Histidine | 84.49 | 84.66 | 84.69 | 84.46 | 1.43 | 0.93 | 0.91 | 0.79 |
Isoleucine | 8.94 | 9.30 | 8.80 | 9.44 | 0.43 | 0.57 | 0.31 | 0.44 |
Leucine | 15.70 | 15.03 | 16.07 | 14.67 | 0.52 | 0.71 | 0.09 | 0.24 |
Lysine | 20.76 | 19.51 | 21.93 | 18.34 | 0.93 | 0.38 | 0.02 | 0.28 |
Methionine | 5.26 | 5.51 | 5.73 | 5.05 | 0.18 | 0.34 | 0.02 | 0.44 |
Phenylalanine | 10.94 | 11.03 | 11.33 | 10.64 | 0.28 | 0.84 | 0.11 | 0.48 |
Threonine | 9.24 | 9.56 | 9.81 | 8.99 | 0.51 | 0.67 | 0.27 | 0.32 |
Tryptophan | 2.92 | 3.02 | 2.82 | 3.12 | 0.12 | 0.58 | 0.09 | 0.48 |
Valine | 14.05 | 12.36 | 13.15 | 13.26 | 0.49 | 0.03 | 0.88 | <0.01 |
Alanine | 158.09 | 165.34 | 161.15 | 162.48 | 6.40 | 0.42 | 0.89 | 0.21 |
Asparagine | 5.37 | 5.13 | 5.58 | 4.92 | 0.31 | 0.59 | 0.15 | 0.35 |
Cysteine | 0.61 | 0.29 | 0.58 | 0.33 | 0.12 | 0.08 | 0.12 | 0.53 |
γ-aminobutyric acid | 0.36 | 0.36 | 0.37 | 0.36 | 0.01 | 0.99 | 0.50 | 0.66 |
Glutamate | 12.11 | 13.63 | 12.31 | 13.43 | 1.03 | 0.31 | 0.45 | 0.82 |
Glutamine | 92.04 | 83.21 | 100.73 | 74.53 | 10.01 | 0.52 | 0.08 | 0.56 |
Glycine | 38.21 | 43.12 | 42.79 | 38.55 | 2.42 | 0.17 | 0.23 | 0.34 |
Proline | 13.06 | 12.93 | 13.19 | 12.80 | 0.43 | 0.84 | 0.53 | 0.41 |
Serine | 11.56 | 10.02 | 11.62 | 9.95 | 0.60 | 0.09 | 0.07 | 0.27 |
Tyrosine | 11.11 | 10.77 | 10.97 | 10.90 | 0.46 | 0.62 | 0.95 | 0.70 |
Sulfur-containing amino acidsa | 5.87 | 5.80 | 6.30 | 5.37 | 0.23 | 0.84 | 0.01 | 0.78 |
Total amino acids | 534.21 | 533.49 | 552.39 | 515.31 | 13.23 | 0.84 | 0.01 | 0.78 |