Pyridoxine deficiency and postnatal development of brain aspartate and alanine aminotransferase activities, and cholesterol levels in chicks.

Feeding a pyridoxine deficient diet, for 2 weeks after hatching, had no effect on post-hatching development of chick brain aspartate aminotransferase (L-aspartate:2-oxoglutarate aminotransferase, EC 2.6.1.1) activity or on cholesterol deposition in the brain, but significantly depressed the development of brain alanine aminotransferase (L-alanine:2-oxoglutarate aminotransferase, EC 2.5.1.2) activity. Feeding a pyridoxine deficient diet from 3 to 8 weeks of age had no effect on any of the three parameters studied.