Age Epithelial height (mm) Tubular diameter (mm)  Neonatal animals  (5 days) - 43.70 ± 2.18 Early suckling animals (2 months) - 55.46 ± 2.07 Late suckling animals(6 & 9 months) - 60.16 ±3.84 Premature animals (1.5 years) 60 ± 1.24 143.57 ± 9.96 Mature animals (2-3 years) 72.7 ± 1.98 205.6±6.65

Values are represented by means ± standard deviation (SD). (-) = Not estimated

Table 4: Epithelial height and diameter of seminiferous cords and / or tubules in the postnatal testes of donkeys.