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| Location: |
Africa - Southern Africa - South Africa |
| Subject: |
Reproduction |
| Species: |
Black Rhino |
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Population introduced in Addo NP. Six cows born in the Park have calved and the ages of first conception and calving are shown.
Cow Age Conception First Calving
Lucky Star 7 yrs 2 mo 8 - 5
Doreen 6 - 9 8 - 0
Blom 9 - 1 10 - 4
Salttery 3 - 10 5 - 1
Ida 6 - 3 7 - 6
Vega 4 - 10 6 - 1
The ages at first calving are higher than those given in the literature for wild blackrhino (Goddard, 1970) but of the order reported for captives (Mentis, 1972). The records for the first three cows given above (mean age at first calving 8 years 11 months) were derived from the period when the animals were living at an unnaturally high density and when only one adult bull, or no adult bull was available. The age at first calving for the second group of three cows is 6 years 3 months. Four adult bulls were available at the time when the first two of these cows conceived, and three when the third conceived. These latter records are, therefore, more likely to be representative of what may be expected from this population in the future.
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Recruitment in a small black rhino population
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