[The red blood picture in male nutria in the post-natal period].

Blood was sampled by heart puncture from healthy male coypus of ten age categories (from 1 to 300 days). The basic haematological values of the red blood picture were determined in these samples. including the erythrocyte count, haemoglobin content, haematocrit reading, mean corpuscular haemoglobin, mean corpuscular haemoglobin concentration, and mean corpuscular volume. The summarized mathematico-statistical characteristics were calculated from the values obtained in each group and the significance of differences was determined by the analysis of variance at significance levels of P = 0.01 and P = 0.05.