Table 3.
Basal ileal flow of endogenous amino acids (mg/kg DMI) in broiler chickens fed the N-free diet at 14 and 28 days age (n = 6).
| Amino Acid | 14 d | 28 d | p-Value 1 |
|---|---|---|---|
| Ala | 276 (33) | 194 (25) | <0.001 |
| Arg | 271 (41) | 181 (25) | <0.001 |
| Asp | 385 (36) | 296 (20) | <0.001 |
| Cys | 118 (6) | 126 (9) | 0.094 |
| Glu | 490 (55) | 379 (66) | 0.010 |
| Gly | 266 (34) | 210 (24) | 0.009 |
| His | 108 (4) | 89 (8) | <0.001 |
| Ile | 259 (34) | 234 (27) | 0.193 |
| Leu | 330 (20) | 285 (37) | 0.025 |
| Lys | 251 (15) | 174 (20) | <0.001 |
| Met | 77 (5) | 73 (7) | 0.286 |
| Phe | 263 (37) | 199 (19) | 0.003 |
| Pro | 280 (20) | 255 (24) | 0.081 |
| Ser | 289 (14) | 233 (19) | <0.001 |
| Thr | 352 (26) | 334 (39) | 0.362 |
| Tyr | 232 (17) | 205 (12) | 0.009 |
| Val | 300 (38) | 230 (28) | 0.004 |
| Total amino acids 2 | 4545 (279) | 3696 (355) | <0.001 |
1p-value of t-test. 2 Sum of all the amino acids listed above. Figures in parentheses are standard deviations.