JOURNAL ARTICLE

The development of the reproductive organs of the male giraffe, Giraffa camelopardalis

A J Hall-Martin, J D Skinner, B J Hopkins
Journal of Reproduction and Fertility 1978, 52 (1): 1-7
621681
The reproductive organs of the male giraffe differ little in morphology and histology from those of other ungulates. There is some indication that gonadal hypertrophy occurs in late fetal life. Spermatogenesis begins at 3-4 years of age and coincides with a rapid increase of testicular weight and seminiferous tubule diameter. In the fetal testis the main hormone is androsteredione (2.73 microgram/g) but in adult testes testosterone is predominant (less than 10.08 microgram/g) and delta' testosterone may also be present.

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