TY - JOUR JO - Journal of Animal and Feed Sciences J2 - J. Anim. Feed Sci. SN - 1230-1388 VL - 9 IS - 4 PY - 2000 ID - Massányi2000 TI - Seasonal variations in the morphometric analysis of the testis, testosterone production, and occurrence of pathological spermatozoa in the brown hare (Lepus europaeus) AB - Seasonal variations in the morphometric analysis of the testis, variations in testosterone production, and occurrence of pathological spermatozoa in the brown hare ( Lepus europaeus ) were studied. In evaluating the relative volume of germinal epithelium, interstitium and lumen in hare testis we found the highest relative volume of germinal epithelium in the winter (84.14%). The lowest level was found in the summer, but the highest relative volumes of interstitium (12.47%) and lumen (18.11%) were in the summer. The germinal epithelium achieved a maximum height in the winter (35.47 μm), when the diameter of the seminiferous tubules was also at a maximum (320.75 μm). These data are supported by analysis of testosterone production, which shows that the highest concentration of testosterone in blood was found in the winter (5.72 ng/ml), the lowest in the summer (0.87 ng/ml). This difference was significant (P<0.01). Analysis of pathological spermatozoa showed that their occurrence ranged from 11.50 to 24.17%, with the highest value in the spring. As the spermatozoa were collected from the epididymis, the most frequently found pathological form was spermatozoa with retention of the cytoplasmic drop. AU - Massányi, P. AU - Slamečka, J. AU - Lukáč, N. AU - Jurčík, R. SP - 709 EP - 719 DA - 2000 DO - 10.22358/jafs/68236/2000 UR - https://doi.org/10.22358/jafs/68236/2000 ER -