Table 4.
Effects of supplementary feeding and restricted feeding on the amino acid profile of the longissimus thoracis of Hu sheep (mg/g).
| Trait | CON | SF | RF | SEM | P-value |
|---|---|---|---|---|---|
| Essential amino acids (EAA) | |||||
| Lysine | 14.66 ± 1.16ab | 15.83 ± 0.72a | 13.26 ± 1.51b | 0.40 | 0.016 |
| Phenylalanine | 6.53 ± 0.55ab | 7.10 ± 0.31a | 5.85 ± 0.68b | 0.19 | 0.010 |
| Threonine | 7.62 ± 0.56ab | 8.07 ± 0.35a | 6.98 ± 0.76b | 0.18 | 0.036 |
| Methionine | 3.53 ± 0.53 | 3.71 ± 0.80 | 3.24 ± 0.61 | 0.17 | 0.537 |
| Valine | 8.00 ± 0.70a | 8.79 ± 0.40a | 7.11 ± 0.82b | 0.24 | 0.006 |
| Leucine | 13.36 ± 1.14ab | 14.43 ± 0.65a | 12.09 ± 1.41b | 0.37 | 0.020 |
| Isoleucine | 7.32 ± 0.76ab | 8.09 ± 0.41a | 6.54 ± 0.81b | 0.24 | 0.012 |
| Histidine | 6.00 ± 0.65a | 6.23 ± 0.38a | 4.65 ± 0.93b | 0.25 | 0.007 |
| EAA | 67.03 ± 5.87ab | 72.27 ± 3.93a | 59.71 ± 7.50b | 1.98 | 0.019 |
| Non-essential amino acids (NEAA) | |||||
| Arginine | 10.34 ± 0.83ab | 11.08 ± 0.55a | 9.57 ± 0.92b | 0.25 | 0.031 |
| Asparticacid | 15.07 ± 1.16ab | 16.16 ± 0.69a | 13.69 ± 1.53b | 0.39 | 0.020 |
| Glutamicacid | 24.79 ± 1.89 | 26.10 ± 1.22 | 23.23 ± 1.95 | 0.52 | 0.064 |
| Glycine | 6.95 ± 0.40 | 7.34 ± 0.37 | 6.77 ± 0.41 | 0.11 | 0.102 |
| Alanine | 9.26 ± 0.75ab | 9.87 ± 0.45a | 8.57 ± 0.79b | 0.22 | 0.033 |
| Proline | 5.53 ± 0.26b | 5.98 ± 0.30a | 5.25 ± 0.29b | 0.11 | 0.005 |
| Serine | 6.29 ± 0.41 | 6.85 ± 0.30 | 6.10 ± 0.58 | 0.14 | 0.051 |
| Tyrosine | 5.63 ± 0.45ab | 6.00 ± 0.34a | 5.11 ± 0.56b | 0.15 | 0.028 |
| Cystine | 1.63 ± 0.08a | 1.71 ± 0.12a | 1.44 ± 0.17b | 0.04 | 0.016 |
| NEAA | 85.74 ± 6.14ab | 91.09 ± 4.25a | 79.70 ± 6.90b | 1.88 | 0.031 |
| EAA/NEAA (%) | 78.11 ± 1.39a | 79.31 ± 0.87a | 74.71 ± 3.1b | 0.71 | 0.010 |
| Flavor amino acids | 59.19 ± 4.59 | 62.69 ± 3.39 | 54.82 ± 5.44 | 1.39 | 0.054 |
| Total amino acids | 152.78 ± 12.00ab | 163.36 ± 8.15a | 139.41 ± 14.40b | 3.85 | 0.024 |
Values are mean ± SD. a, b, c Mean values with unlike letters statistically significant (P < 0.05) for parameters where the overall one-way ANOVA was significant (P < 0.05). CON = control group; SF = supplementary feeding group; RF = restricted feeding group. SEM = standard error of the mean. EAA = Lys + Phe + Thr + Met + Val + Leu + Ile + His. NEAA = Arg + Asp + Glu + Gly + Ala + Pro + Ser + Tyr + Cys. Flavor amino acids = Met + Asp + Glu + Ala + Ser.