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Table 6 Regression coefficients of models A and A + D in cross-validation

From: Accounting for dominance to improve genomic evaluations of dairy cows for fertility and milk production traits

Breed

Model

Parameter

Trait

CI

Milk yield

Fat yield

Protein yield

Holstein

A

BV

1.090 (0.187)

0.985 (0.051)

0.995 (0.080)

0.983 (0.094)

A + D

BV + DV

1.104 (0.183)

0.987 (0.049)

0.999 (0.082)

0.986 (0.093)

A vs. A + D

P value (BVA vs. 1)

0.6563

0.7800

0.9488

0.8686

P value ([BV + DV]A + D vs. 1)

0.5986

0.8080

0.9892

0.8879

Jersey

A

BV

1.637 (0.178)

1.011 (0.093)

0.911 (0.133)

0.925 (0.120)

A + D

BV + DV

1.629 (0.176)

1.012 (0.095)

0.917 (0.143)

0.929 (0.130)

A vs. A + D

P value (BVA vs. 1)

0.02

0.91

0.54

0.56

P value ([BV + DV]A + D vs. 1)

0.02

0.90

0.59

0.61

  1. Average regression coefficients between estimated genetic effects (breeding values [BV] or total genetic values [BV + DV]) obtained from models A (additive effects only) and A + D (additive and dominance effects) and adjusted phenotypes for calving interval (CI), milk, fat and protein yield in Holstein and Jersey cows based on fivefold cross validation
  2. Standard errors (SE) in parentheses