Table 3.
Activities of glutamate-oxaloacetate transaminase (GOT) and glutamate-pyruvate transaminase (GPT) in the hepatopancreas and muscle of sub-adult grass carp fed diets with graded levels of methionine for 8 wk1
| Met, g/kg diet | 2.21 | 4.24 | 6.22 | 8.25 | 10.24 | 12.26 |
|---|---|---|---|---|---|---|
| Hepatopancreas | ||||||
| GOT, U/g protein | 13.82 ± 1.50a | 22.83 ± 1.81c | 23.88 ± 1.66c | 24.35 ± 1.12c | 32.43 ± 2.01d | 20.97 ± 1.09b |
| GPT, U/g protein | 21.30 ± 1.44 | 21.54 ± 1.79 | 20.97 ± 0.96 | 20.60 ± 0.88 | 21.16 ± 1.24 | 20.60 ± 1.26 |
| Muscle | ||||||
| GOT, U/g protein | 15.15 ± 1.37 | 15.87 ± 1.47 | 15.95 ± 1.35 | 15.96 ± 1.33 | 15.41 ± 0.76 | 15.11 ± 1.41 |
| GPT, U/g protein | 3.46 ± 0.26b | 4.64 ± 0.34c | 10.74 ± 0.59e | 11.25 ± 0.58e | 6.92 ± 0.57d | 1.45 ± 0.12a |
| Regression | ||||||
| YGPT in muscle = −0.331X2 + 4.747X – 6.734 | R 2 = 0.846 | P = 0.060 | ||||
a-eMeans in the same row with different superscript letters differ significantly (P < 0.05)
1Values are mean ± SD (n = 6)