Table 7.
Effect of diet CP levels and AA infusions on arterial AA concentrations (µM).
| Dietary CP | 16.1 | 14.6 | 14.6 | 13.2 | 13.2 | SEM | Trt |
|---|---|---|---|---|---|---|---|
| AA Infusion | − | + | − | + | − | p-Value | |
| Alanine | 281.8 | 255.5 | 261.0 | 290.8 | 279.8 | 14.8 | 0.29 |
| Asparagine | 16.1 | 15.1 | 15.9 | 15.3 | 14.8 | 1.9 | 0.98 |
| Aspartate | 24.9 | 19.9 | 21.8 | 22.1 | 23.0 | 3.0 | 0.61 |
| Cysteine | 142.3 ab | 145.8 ab | 131.4 b | 161.2 a | 130.2 b | 9.4 | 0.05 |
| Glutamate | 156.9 | 139.6 | 138.0 | 140.8 | 148.2 | 11.1 | 0.30 |
| Glutamine | 114.2 | 115.7 | 116.5 | 123.1 | 120.9 | 10.9 | 0.93 |
| Glycine | 318.1 b | 288.6 b | 312.1 b | 318.3 b | 373.7 a | 25.1 | 0.02 |
| Histidine | 50.3 b | 52.1 ab | 36.2 bc | 66.6 a | 31.6 c | 6.6 | <0.01 |
| Isoleucine | 115.6 a | 101.8 b | 108.4 a | 100.0 b | 101.1 b | 7.0 | 0.10 |
| Leucine | 120.4 | 104.8 | 109.6 | 113.4 | 107.6 | 6.4 | 0.17 |
| Lysine | 117.0 ab | 101.7 b | 109.4 b | 129.8 a | 101.5 b | 7.4 | 0.01 |
| Methionine | 25.3 c | 36.9 b | 23.0 c | 51.1 a | 24.4 c | 2.9 | <0.01 |
| Phenylalanine | 44.7 | 40.4 | 43.6 | 40.0 | 45.3 | 3.2 | 0.47 |
| Proline | 82.1 | 74.1 | 77.4 | 79.1 | 79.7 | 4.6 | 0.66 |
| Serine | 98.9 ab | 81.5 c | 96.7 b | 92.5 bc | 111.8 a | 5.7 | <0.01 |
| Threonine | 90.6 | 79.5 | 94.6 | 84.1 | 97.0 | 7.9 | 0.21 |
| Tryptophan | 46.6 | 41.7 | 44.6 | 40.2 | 44.3 | 3.5 | 0.33 |
| Tyrosine | 46.9 a | 39.6 b | 47.1 a | 38.3 b | 46.5 a | 3.2 | <0.01 |
| Valine | 192.9 a | 158.4 b | 176.0 ab | 156.4 b | 166.6 b | 11.7 | <0.01 |
| Total AA-N 1 | 2472 | 2347 | 2286 | 2499 | 2396 | 111 | 0.41 |
| EAA-N 1 | 1060 ab | 1002 abc | 954 bc | 1083 a | 934 c | 53 | 0.02 |
| NEAA-N 1 | 1413 | 1299 | 1336 | 1424 | 1466 | 69 | 0.32 |
| Group 1 AA-N 2 | 444 ab | 445 ab | 395 b | 493 a | 400 b | 29 | 0.02 |
| Group 2 AA-N 2 | 663 a | 570 b | 617 ab | 630 ab | 580 b | 33 | 0.05 |
1 Total AA-N: sum of all analyzed AA, on N basis; EAA-N: sum of His, Ile, Leu, Lys, Met, Phe, Thr, Trp, and Val, on N basis; NEAA-N: sum of Ala, Asn, Asp, Asn, Cys, Glu, Gln, Gly, Pro, Ser, and Tyr, on N basis. 2 Group 1 AA-N: sum of His, Met, Phe+Tyr, Thr, and Trp, on N basis; Group 2 AA-N: sum of Ile, Leu, Lys, and Val, on N basis. Means within row followed by different superscripts differ at p ≤ 0.10.