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Reproductive status of heifers sampled from the three states of Northern Nigeria
| Age (years) | Cyclic | Acyclic or reproductive problem | Pregnant | Total |
|---|---|---|---|---|
| < 2 | 2 | 5 | 0 | 7 |
| 2 | 21 (21.2) | 65 (65.7) | 13 (13.1) | 99 |
| 3 | 208 (54.6) | 92 (23.1) | 81 (21.3) | 381 |
| 4 | 212 (44.2) | 54 (11.3) | 214 (44.6) | 480 |
| 5 | 54 (36.2) | 10 (6.7) | 85 (57.0) | 149 |
| 6 | 1 | 10 | 2 | 13 |
| 7 | 0 | 5 | 0 | 5 |
| Total | 498 | 241 | 395 | 1134 |
