Table 1.
Use of dietary AA for protein accretion in sow-reared 14-d-old pigs and 30-d-old pigs weaned at 21 d of age1
| Sow-reared 14-d-old pigs |
Weaned 30-d-old pigs |
|||
| AA | AA in sow milk2 | AA accretion in the pig/AA intake from milk3 | AA in diet4 | AA accretion in the pig/AA intake from diet3 |
| % | ||||
| EAA | 27.3 | 65.9 (91.1) | 110 | 54.8 (92.2) |
| Arginine | 1.43 | 164 (203) | 13.2 | 59.5 (110) |
| Histidine | 0.92 | 78.6 (86.8) | 5.73 | 42.3 (62.5) |
| Isoleucine | 2.28 | 53.8 (79.4) | 8.91 | 46.0 (80.4) |
| Leucine | 4.46 | 53.1 (77.7) | 17.8 | 44.6 (76.9) |
| Lysine | 4.08 | 51.2 (61.8) | 14.2 | 49.4 (78.3) |
| Methionine | 1.04 | 63.2 (70.6) | 3.58 | 60.3 (85.4) |
| Phenylalanine | 2.03 | 59.5 (73.3) | 9.93 | 40.1 (59.1) |
| Proline | 5.59 | — | 15.8 | — |
| Hydroxyproline | 0.00 | — | 0.00 | — |
| Pro + OH-Pro5 | 5.59 | 75.1 (123) | 15.8 | 91.2 (174) |
| Threonine | 2.29 | 53.1 (84.1) | 8.52 | 47.8 (80.0) |
| Tryptophan | 0.66 | 58.3 (67.3) | 2.49 | 51.7 (75.0) |
| Valine | 2.54 | 57.8 (88.7) | 9.96 | 49.1 (88.7) |
| NEAA | 22.7 | 75.9 (154) | 99.2 | 56.4 (130) |
| Alanine | 1.97 | 116 (151) | 13.0 | 58.6 (76.6) |
| Asparagine | 2.53 | 48.5 (56.0) | 9.40 | 44.5 (60.2) |
| Aspartate | 2.59 | 57.2 (1227) | 13.2 | 37.7 (761) |
| Cysteine | 0.72 | 63.6 (84.0) | 3.74 | 40.9 (59.3) |
| Glutamate | 4.57 | 59.2 (1176) | 17.2 | 57.1 (1643) |
| Glutamine | 4.87 | 35.7 (112) | 18.4 | 32.4 (117) |
| Glycine | 1.12 | 350 (435) | 8.81 | 155 (217) |
| Serine | 2.35 | 65.1 (81.4) | 7.86 | 65.6 (88.7) |
| Tyrosine | 1.94 | 47.5 (58.7) | 7.62 | 41.4 (58.7) |
| Total AA | 50.0 | 69.6 | 209 | 55.4 |
1
Adapted from Wu et al. (14). Arginine and proline are EAA for young pigs because of inadequate synthesis (4).
2
g/L of whole milk.
3
Values for AA accretion are percent. Values in parentheses are percent of AA entering the portal vein from the small intestine.
4
g/kg diet (as-fed basis).
5
OH-Pro, hydroxyproline.