[Alanine and aspartate aminotransferase activity in the grass carp oocytes, ovarian and perivitelline fluids].

The alanine aminotransferase activity in the ovarian fluid is much higher than in the mature oocytes and perivitelline fluid, the aspartate aminotransferase activity is higher in the perivitelline fluid than in the oocytes and ovarian fluid. The aspartate aminotransferase activity prevails in the mature oocytes and perivitelline fluid. The temperature optimum of the both activities is 38-44 degrees C, the pH optimum is between 7.5-7.6.