Effects of dietary pyridoxine and protein levels on growth, vitamin B6 content, and free amino acid profile of juvenile Penaeus japonicus

A 2 × 2 factorial design was utilized to evaluate the effects of dietary pyridoxine (0 and 200 mg kg−1 diet) and protein (49 and 64%) levels on growth, B6 vitamer content, and free amino acid profile of juvenile Penaeus japonicus (0.17 ± 0.03 g; mean ± sd) after a 10-week feeding experiment. Pyridoxine (PN) and protein levels significantly (P < 0.05) improved weight gain, feed intake, feed efficiency, and increased whole body protein content,...