The effect of pyridoxine deficiency on aminotransferase activity in liver and white muscle of rainbow trout ( Salmo gairdneri Richardson)

Abstract

1. 1. Aspartate aminotransferase activity in the white muscle of rainbow trout dropped significantly after the animals had received a pyridoxine-deficient diet for 7 days. 2. 2. Alanine aminotransferase activity in the white muscle of rainbow trout dropped significantly after the animals had been fed on a pyridoxine-deficient diet for 21 days. 3. 3. Alanine and aspartate aminotransferase activity in the liver of rainbow trout did not drop significantly until the animals had received a pyridoxine-deficient diet for 28 days. 4. 4. After rainbow trout have received a pyridoxine-deficient diet for 35 days, feeding with complete diet for 7 days is sufficient to restore the aminotransferase activities to the levels observed in control animals.