Table 3.
Percentage of ejaculates acceptable for artificial insemination (AI) after cryopreservation (post-thaw progressive motility ≥35%) and number of insemination doses (250 × 106 progressively motile spermatozoa/dose; mean ± SD) in stallions of different breed and age and ejaculates frozen at different times of the year.
| Breed | Warmblood | Quarter Horse | Arab | Icelandic | Lipizzaner | |||
|---|---|---|---|---|---|---|---|---|
| Acceptable for AI (%) | 70.3 | 60.5 | 77.8 | 37.8 | 80.4 | |||
| AI doses (n) |
10.5 ± 7.3 | 5.8 ± 4.3 | 9.3 ± 6.7 | 4.8 ± 3.9 | 9.6 ± 6.7 | |||
| Age group | 2–4 years | 5–9 years | 10–14 years | ≥15 years | ||||
| Acceptable for AI (%) | 75.4 | 78.0 | 50.0 | 63.7 | ||||
| AI doses (n) |
9.2 ± 6.0 | 9.3 ± 6.8 | 6.4 ± 4.9 | 8.0 ± 7.2 | ||||
| Season | Spring | Summer | Autumn | Winter | ||||
| Acceptable for AI (%) | 71.2 | 81.0 | 73.3 | 57.0 | ||||
| AI doses (n) |
7.9 ± 5.7 | 10.5 ± 7.7 | 9.2 ± 6.5 | 7.6 ± 6.7 | ||||