The electrophoretic properties of plasma protein of cultured yellow tail (body weight 2.6±0.34kg, n=31) were examined on cellulose acetate and polyacrylamide gel. The ranges and mean values of hematocrit, total plasma protein, and lipid were also measured.
1) Cellulose acetate electrophoresis of the plasma showed mainly 6 protein fractions. Although the electrophoretic patterns and percentage composition of plasma protein were similar to those of young ye'low tail (body weight 286±55.1g, n=10), their lipoprotein patterns were quite different. It was suggested that the physiological function of plasma protein components was not consistent throughout whole the life of the specimen.
2)A wide range in hematocrit values was obtained. However, the correlation coefficient between hematocrit value and amount of plasma protein was 0.75, and that between hematocrit value and amount of plasma lipid was 0.71.
3)No correlation was observed between hematocrit value and the electrophoretic pattern of plasma proteins.