Table 1 Frequency of CVM-carriers grouped according to birth year for 228 Swedish Holstein bulls.
From: Effects of Complex Vertebral Malformation on Fertility in Swedish Holstein Cattle
Birth year of bull | CVM-carriers N | Frequency % |
|---|---|---|
1995 | 0 | 0 |
1996 | 3 | 20.0 |
1997 | 18 | 21.7 |
1998 | 23 | 30.3 |
1999 | 9 | 18.0 |