Effects of Moderate and Severe Exercise in Rainbow Trout on Some Properties of Arterial Blood, Including Red Blood Cell Deformability

Abstract

Effects of exercise on arterial blood gas and haematological properties including red blood cell deformability were studied using chronically cannulated rainbow trout.No significant change in P_{a, 02} was observed after severe (2.0 L.s^-1) exercise but there was some indication of an increase after moderate (1.6 L.s^-1) exercise.A significant increase in pH_a following moderate exercise was observed and the same specimens showed a decrease in pH_a after severe exercise. Although there was a tendency for red blood cell deformability to be increased after moderate and especially severe exercise, the changes were statistically not significant.