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Table 1 Number of cows (N), mean, standard deviation (SD), corrected phenotypic standard deviation (\({\varvec{\upsigma}}_{{\mathbf{p}}}\)), genetic standard deviation (\({\varvec{\upsigma}}_{{\mathbf{a}}}\)) and heritability (h2) for all evaluated traits

From: Inbreeding depression due to recent and ancient inbreeding in Dutch Holstein–Friesian dairy cattle

Trait Trait unit N Mean SD \({\varvec{\upsigma}}_{{\mathbf{p}}}\) \({\varvec{\upsigma}}_{{\mathbf{a}}}\) h2 (SE)
MY kg 38,778 8091 1375 1199 825 0.47 (0.02)
FY kg 38,778 342 51.8 43.9 28.4 0.42 (0.02)
PY kg 38,778 283 44.7 36.6 22.0 0.36 (0.02)
CI days 34,864 394 67.2 65.3 18.5 0.08 (0.01)
ICF days 34,937 77.6 30.0 27.2 7.9 0.08 (0.01)
IFL days 34,937 39.9 56.1 55.4 12.3 0.05 (0.01)
CR % 34,774 63.8 36.1 35.7 6.1 0.03 (0.01)
SCS150 1000 + 100*[log2 of cells/mL] 38,301 1568 138 134 45.5 0.11 (0.01)
SCS400 1000 + 100*[log2 of cells/mL] 37,068 1581 133 129 48.9 0.14 (0.01)
  1. MY: 305-day milk yield; FY: 305-day fat yield; PY: 305-day protein yield; CI: calving interval; ICF: interval calving to first insemination; IFL: interval first to last insemination; CR: conception rate; SCS150: somatic cell score day 5 to 150; SCS400: somatic cell score day 151 to 400