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Table 2 Relative breeding values for non-return to service rate (NRR) in 53 CVM-carriers and 175 homozygous normal bulls (LS-means ± SE).

From: Effects of Complex Vertebral Malformation on Fertility in Swedish Holstein Cattle

NRR days

Homozygous normal (LS-mean ± SE)

CVM-carriers (LS-mean ± SE)

P-value

28

100.7 ± 0.3

100.2 ± 0.4

0.277

56

101.8 ± 0.4

100.5 ± 0.6

0.076

168

103.1 ± 0.6

101.1 ± 0.9

0.039