TABLE 3.
Concentration of free amino acids in porcine plasma and pulmonary ELF
| Amino acida | Amino acid concn in μmol/liter (avg ± SD) |
Avg ELF/ plasma ratio (%)b | Amino acid concn in CDM in μmol/liter | |
|---|---|---|---|---|
| Plasma | ELF | |||
| Alanine | 509 ± 204 | 92.9 ± 45.2 | 20.5 | 370 |
| Arginine | 29.6 ± 39.1 | 2.6 ± 5.7 | 24.4 | 240 |
| Aspartic acid | 5.9 ± 3.9 | 47.9 ± 25.8 | 640 | 1,250 |
| Cysteine | 71.7 ± 15.8 | 8.7 ± 10.9 | 10.5 | 700 |
| Glutamic acid | 132 ± 41.7 | 172 ± 80.4 | 114 | 2,950 |
| Glutamine | 926 ± 612 | 76.3 ± 61.4 | 12.8 | 110 |
| Glycine | 816 ± 166 | 291 ± 177 | 38.7 | 110 |
| Histidine | 15.7 ± 20.5 | 0.1 ± 0.1 | 59.9 | 43 |
| Isoleucine* | 80.6 ± 9.8 | 8.4 ± 9.5 | 9.8 | 80 |
| Leucine* | 146 ± 25.7 | 25.5 ± 21.8 | 16.6 | 230 |
| Lysine* | 57.1 ± 82.3 | 11.9 ± 26.7 | 54.2 | 90 |
| Methionine* | 27.7 ± 7.2 | 1.6 ± 1.5 | 5.2 | 30 |
| Phenylalanine* | 68.3 ± 18.1 | 18.1 ± 11.8 | 26.1 | 50 |
| Proline | 820 ± 206 | 345 ± 202 | 46.2 | 140 |
| Serine | 125 ± 26.4 | 58.2 ± 39.2 | 42.9 | 160 |
| Threonine* | 63.6 ± 11.9 | 28.2 ± 15.9 | 46.8 | 140 |
| Tyrosine | 62.2 ± 13.1 | 5.5 ± 4.1 | 9.2 | 130 |
| Valine* | 171 ± 30 | 30.4 ± 23.4 | 16.8 | 170 |
a
Values for asparagine, cystine, and tryptophan were below detectable limits on most or all samples. *, Essential amino acid.
b
ELF/plasma amino acid concentration ratios were calculated for each pig, and the averages of these ratios are presented.