Abstract

The relative frequencies of stages and substages of the Swamp buffalo seminiferous epithelium were determined using a morphological classification. Duration of one cycle of the seminiferous epithelium was determined from radiolabelling studies using tritiated thymidine. Mean (±SD) duration of the cyle of the seminiferous epithelium of five Swamp buffalo was 8.74 ± 0.18 d. Mean (±SEM) relative frequencies of stages and substages of the seminiferous epithelial cycle in ten bulls were Stage 1a, 7.27 ± 0.72; Stage 1b, 8.11 ± 0.85; Stage 1c, 8.54 ± 1.13; Stage 2a, 5.9 ± 0.79; Stage 2b, 7.49 ± 0.78; Stage 3a, 9.05 ± 0.66; Stage 3b, 9.69 ± 1.11; Stage 4a, 5.04 ± 0.44; Stage 4b, 4.8 ± 0.69; Stage 5, 1.86 ± 0.23; Stage 6, 8.81 ± 0.84; Stage 7, 10.64 ± 1.2; Stage 8a, 6.87 ± 0.96; and Stage 8b, 5.93 ± 0.72.

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