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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