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Table 1 Effect of a 1% increase in genome-wide homozygosity (\(b\)), and mean dominance effect per SNP (\(-b/{N}_{SNP}\)), for three models and nine traits

From: Inbreeding depression across the genome of Dutch Holstein Friesian dairy cattle

Trait \({N}_{cows}\) Model A Model AD Model ADR
\(b\)(SE) \(-b/{N}_{SNP}\) \(b\)(SE) \(-b/{N}_{SNP}\) \(b\)(SE) \(-b/{N}_{SNP}\)
MY 38,778 − 99.6 (5.2) 0.1322 − 98.7 (6.1) 0.1310 − 97.8 (6.7) 0.1298
FY 38,778 − 4.10 (0.20) 0.0054 − 4.04 (0.23) 0.0054 − 4.01 (0.27) 0.0053
PY 38,778 − 3.49 (0.17) 0.0046 − 3.45 (0.20) 0.0046 − 3.42 (0.23) 0.0045
CI 34,864 1.11 (0.35) − 0.0015 1.11 (0.35) − 0.0015 1.11 (0.38) − 0.0015
ICF 34,937 0.20 (0.15) − 0.0003 0.21 (0.16) − 0.0003 0.21 (0.17) − 0.0003
IFL 34,937 0.79 (0.30) − 0.0011 0.79 (0.30) − 0.0010 0.79 (0.30) − 0.0010
CR (%) 34,774 − 0.68 (0.19) 9.0E–06 − 0.68 (0.19) 9.0E–06 − 0.68 (0.19) 9.0E–06
SCS150 38,301 1.09 (0.69) − 0.0015 1.08 (0.70) − 0.0015 1.09 (0.71) − 0.0014
SCS400 37,068 2.28 (0.67) − 0.0030 2.26 (0.70) − 0.0030 2.26 (0.70) − 0.0030
  1. Model A, additive model; AD, additive + dominance model; ADR, additive + dominance + ROH model
  2. MY, 305-day milk yield (kg); FY, 305-day fat yield (kg); PY, 305-day protein yield (kg); CI, calving interval (days); ICF, interval calving to first insemination (days); IFL, interval first to last insemination (days); CR: conception rate (%); SCS150 somatic cell score day 5 to 150 (1000 + 100* [log2 of cells/mL]); SCS400: somatic cell score day 151 to 400 (1000 + 100*[log2 of cells/mL])
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