Table 6.
The amino acids composition (% dry weight) in the muscle of largemouth bass fed the experimental diets for 26 days.
Experimental diets | Regression (P, R2) | ||||||
---|---|---|---|---|---|---|---|
PH0 | PH25 | PH50 | PH75 | PH100 | Linear | Quadratic | |
Threonine | 3.70 ± 0.04b | 4.09 ± 0.05a | 3.77 ± 0.08b | 3.73 ± 0.05b | 3.66 ± 0.03b | 0.169, 0.140 | 0.088, 0.333 |
Valine | 2.99 ± 0.15 | 3.05 ± 0.03 | 2.94 ± 0.03 | 2.92 ± 0.11 | 2.69 ± 0.02 | 0.021, 0.348 | 0.025, 0.458 |
Methionine | 2.63 ± 0.06 | 2.63 ± 0.07 | 2.57 ± 0.05 | 2.57 ± 0.01 | 2.55 ± 0.03 | 0.126, 0.107 | 0.323, 0.172 |
Isoleucine | 2.80 ± 0.17 | 2.86 ± 0.01 | 2.65 ± 0.07 | 2.68 ± 0.04 | 2.83 ± 0.05 | 0.664, 0.015 | 0.441, 0.127 |
Leucine | 6.87 ± 0.20ab | 7.01 ± 0.06a | 6.79 ± 0.05ab | 6.57 ± 0.03ab | 6.54 ± 0.04b | 0.005, 0.468 | 0.015, 0.501 |
Phenylalanine | 3.76 ± 0.40 | 3.62 ± 0.08 | 3.51 ± 0.11 | 3.52 ± 0.07 | 3.45 ± 0.06 | 0.205, 0.121 | 0.426, 0.133 |
Histidine | 3.27 ± 0.06 | 3.19 ± 0.03 | 3.18 ± 0.12 | 3.08 ± 0.07 | 3.06 ± 0.03 | 0.017, 0.366 | 0.064, 0.367 |
Lysine | 6.59 ± 0.08b | 7.12 ± 0.05a | 7.02 ± 0.11a | 6.95 ± 0.06a | 6.95 ± 0.05a | 0.159, 0.146 | 0.016, 0.499 |
Arginine | 8.42 ± 0.21 | 8.19 ± 0.10 | 8.20 ± 0.24 | 8.20 ± 0.13 | 8.46 ± 0.11 | 0.826, 0.004 | 0.293, 0.185 |
Total EAAs | 41.04 ± 0.53 | 41.75 ± 0.30 | 40.63 ± 0.46 | 40.22 ± 0.21 | 40.19 ± 0.25 | 0.023, 0.338 | 0.074, 0.352 |
Proline | 2.25 ± 0.02b | 2.39 ± 0.01a | 2.34 ± 0.05ab | 2.36 ± 0.04ab | 2.37 ± 0.02ab | 0.094, 0.201 | 0.091, 0.330 |
Aspartic acid | 8.69 ± 0.14ab | 8.86 ± 0.10ab | 8.98 ± 0.11a | 8.55 ± 0.03ab | 8.5 ± 0.07b | 0.117, 0.178 | 0.029, 0.446 |
Glutamic acid | 11.23 ± 0.14c | 12.26 ± 0.12a | 11.97 ± 0.20a | 11.87 ± 0.08ab | 11.49 ± 0.08bc | 0.877, 0.002 | 0.004, 0.599 |
Serine | 3.82 ± 0.08 | 4.00 ± 0.10 | 3.78 ± 0.15 | 3.75 ± 0.03 | 3.71 ± 0.01 | 0.138, 0.161 | 0.253, 0.205 |
Glycine | 3.54 ± 0.08ab | 3.69 ± 0.04a | 3.58 ± 0.06ab | 3.55 ± 0.04ab | 3.39 ± 0.04b | 0.057, 0.252 | 0.015, 0.502 |
Alanine | 5.04 ± 0.13 | 5.20 ± 0.05 | 5.07 ± 0.05 | 5.01 ± 0.03 | 4.92 ± 0.03 | 0.102, 0.192 | 0.081, 0.343 |
Cystine | 0.39 ± 0.01b | 0.46 ± 0.01ab | 0.52 ± 0.05a | 0.43 ± 0.01ab | 0.46 ± 0.01ab | 0.334, 0.072 | 0.094, 0.326 |
Tyrosine | 3.05 ± 0.24 | 3.12 ± 0.05 | 2.86 ± 0.09 | 2.72 ± 0.04 | 2.71 ± 0.01 | 0.008, 0.428 | 0.035, 0.429 |
Total NEAAs | 38.00 ± 0.30b | 39.98 ± 0.39a | 39.10 ± 0.63ab | 38.23 ± 0.03b | 37.51 ± 0.13b | 0.171, 0.139 | 0.010, 0.535 |
Total AAs | 79.04 ± 0.82b | 81.73 ± 0.58a | 79.72 ± 1.10ab | 78.46 ± 0.19b | 77.73 ± 0.12b | 0.058, 0.250 | 0.030, 0.441 |
Values (means ± SEM, N = 3) within a row with a common superscript letter are not significantly different from the other dietary groups (P > 0.05). Tryptophan was not determined in the present study. EAA, essential amino acids; NEAA, non-essential amino acids.