Table-1.
Types of sperm abnormalities in individual Simmental bulls.
| Type of sperm abnormality | Bull identity | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
| |||||||||||
| 61,672 | 61,673 | 61,671 | 61,568 | 61,567 | 61,464 | 61,362 | 61,361 | 61,257 | 61,249 | 61,042 | |
| Pear shaped | 0.80 | - | 0.80 | 1.40 | 0.40 | 0.40 | 0.80 | 0.80 | 2.60 | 4.60 | 1.20 |
| Knobbed acrosome | - | - | - | - | - | - | - | - | - | - | - |
| Narrow at the base | - | - | - | - | - | - | - | 0.20 | - | - | - |
| Narrow (tapered head) | - | - | - | - | - | - | - | 0.20 | - | - | - |
| Abnormal contour | - | - | - | - | - | - | - | - | - | - | |
| Underdeveloped | - | 0.60 | 0.80 | 0.80 | 0.40 | 0.80 | - | 0.80 | - | 1.00 | 0.80 |
| Round head | - | - | 0.20 | 0.30 | - | - | - | 1.00 | - | - | 0.40 |
| Macrocephalus | 0.20 | - | - | - | - | - | 0.20 | - | 0.80 | 0.40 | |
| Microcephalus | - | 0.40 | 0.60 | - | - | 0.80 | 1.00 | 0.20 | 0.60 | 1.80 | 0.40 |
| Double head | - | - | - | - | - | - | - | - | 0.60 | - | - |
| Abaxial | 0.20 | - | - | - | - | - | - | 0.20 | 0.60 | - | - |
| Knobbed acrosome defect | - | - | - | - | - | - | - | - | - | - | - |
| Detached head | - | 0.60 | 0.20 | 0.80 | 0.60 | 0.20 | 0.40 | 0.80 | - | 0.80 | 1.00 |
| Diadem | - | - | - | - | - | - | - | - | - | - | - |
| Proximal droplet | - | - | - | - | - | 0.20 | - | 0.20 | 0.80 | - | 0.40 |
| Pseudodroplet | 0.20 | - | - | - | - | - | - | - | - | - | - |
| Tail stump defect | - | - | - | - | - | - | - | 0.40 | - | - | - |
| Abnormal mid-piece | - | - | - | - | - | - | - | - | - | - | |
| Fracture tail | - | - | - | 0.20 | - | - | 0.40 | 0.60 | - | 0.20 | 0.20 |
| Double tail | - | - | - | - | - | - | - | - | - | - | - |
| Bent tail | - | - | - | 0.20 | - | - | - | - | - | - | - |
| Coiled | 2.40 | 2.60 | 1.40 | 0.80 | 1.20 | 1.00 | 1.40 | - | 4.60 | 4.60 | 2.20 |
| Total sperm abnormalities | 3.80±0.43a | 4.20±0.52a | 4.08±0.19a | 4.50±0.16a | 2.60 ±0.19a | 3.40±0.14a | 4.00±0.19a | 5.80±0.09a | 9.80±0.67b | 13.80±0.70b | 7.00±0.21a |
Different letters following the numbers indicate significant differences (p<0.05)