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Blood cell count analyses and erythrocyte morphometry in New Zealand white rabbits

The total and differential leukocyte count, erythrocyte and thrombocyte count, the hemoglobin concentration, packed cell volume, mean corpuscular volume, mean corpuscular hemoglobin, mean corpuscular hemoglobin concentration, and red cell distribution width in male and female New Zealand white rabbits were studied. Furthermore, the basic red blood cell morphometric characteristics were analyzed. The complete blood count values were within the reference intervals for this rabbit breed. Comparing the results regarding the gender, signifi cantly higher hemoglobin concentrations were detected in female rabbits (134.86 vs. 127.5 g/L), whereas in males the anisocytosis was more prominent (RDW 16.09 vs. 15.53). The results of mathematical analysis of the morphometry of erythrocytes revealed statistically different parameters in males and females. Erythrocytes of females had a larger area (30.81 vs. 27.6 μm2 ), greater maximal (3.54 vs. 3.34 μm) and minimal radius (2.61 vs. 2.47 μm), greater convex area (31.95 vs. 29.03 μm2 ) and greater length (6.73 vs. 6.33 μm) and cell elongation factor (1.14 vs. 1.10) than the erythrocytes of males. Though the average cell volume was not signifi cantly different, morphometry data showed that the erythrocytes in males were smaller and with lesser prominence than in females, which is congruent with higher RDW and lower hemoglobin concentration in the male rabbits’ blood, and presumably the higher presence of microcytes in the blood of male rabbits. In conclusion, erythrocyte morphometry may provide valuable data about the changes in erythrocyte morphology and could complement the results obtained by standard hematology methods.

rabbits ; blood cell count ; erythrocyte morphometry

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