Table III.
Association between sperm abnormalities (mean ± s) and age in beef bulls
| Age groups (mo) | Number of bulls | Sperm defects
|
Total
|
|||
|---|---|---|---|---|---|---|
| Head | Midpiece | Tail | Abnormal | Normal | ||
| 11 to 13 | 620 | 5.47 ± 5.69 | 15.02 ± 14.60 | 1.47 ± 2.02 | 21.95 ± 16.50 | 78.05 ± 16.50 |
| 13.5 to 18 | 150 | 5.83 ± 8.30 | 15.36 ± 15.68 | 1.58 ± 1.78 | 22.77 ± 18.57 | 77.23 ± 18.57 |
| 19 to 26 | 621 | 5.30 ± 6.30 | 10.60 ± 11.26 | 1.66 ± 2.37 | 17.56 ± 14.48 | 82.44 ± 14.48 |
| > 26 | 251 | 5.65 ± 5.17 | 11.25 ± 11.08 | 1.37 ± 2.03 | 18.27 ± 12.79 | 81.73 ± 12.79 |
| Overall | 1642 | 5.47 ± 6.13 | 12.80 ± 13.19 | 1.53 ± 2.14 | 19.80 ± 15.59 | 80.20 ± 15.71 |
s — standard deviation.