Defect number | Description | Compensatory or non-compensatory | Major or minor |
---|---|---|---|
0 | Abnormal head shape (pyriform / pear shape, tapered / narrow head base, others) | Non-compensatory | Major |
1 | Vacuoles | Non-compensatory | Major |
2 | Condensed DNA | Non-compensatory | Major |
3 | Micro- or macroencephaly | Compensatory | Minor |
4 | Loose heads | Compensatory | Minor |
5 | Knobbed acrosome | Compensatory | Major |
6 | Detached acrosome | Compensatory | Minor |
7 | Dag defect | Compensatory | Major |
8 | Curled tail (clef-like) | Compensatory | Major |
9 | Middle-piece knobbed | Compensatory | Major |
10 | Tail abaxially attached to head | Compensatory | Minor |
11 | Tail end loop | Compensatory | Minor |
12 | Cytoplasmic droplet proximal (middle-piece near head) | Compensatory | Major |
13 | Cytoplasmic droplet distal (middle-piece near tail) | Compensatory | Minor |
14 | Underdeveloped | Compensatory | Major |
15 | Double form | Compensatory | Minor |