Skip to main content

Table 2 Estimated variance components for three GREML models and nine traits, with standard errors in parentheses

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

Model

Parameter

Trait

MY

FY

PY

CI

ICF

IFL

CR

SCS150

SCS400

A

\({\sigma }_{P}^{2}\)

1356452

1813.04

1269.15

4215.19

717.658

3056.16

12.6991

17693.4

16336.5

\({\sigma }_{A}^{2}/{\sigma }_{P}^{2}\)(%)

41.16 (0.81)

33.34 (0.82)

30.98 (0.81)

5.02 (0.43)

6.41 (0.49)

3.13 (0.35)

2.36 (0.32)

9.26 (0.54)

12.0 (0.60)

AD

\({\sigma }_{P}^{2}\)

1356134

1812.49

1268.93

4215.18

717.690

3056.15

12.6991

17693.82

16336.80

\({\sigma }_{A}^{2}/{\sigma }_{P}^{2}\)(%)

41.13 (0.81)

33.31 (0.82)

30.95 (0.81)

5.02 (0.43)

6.41 (0.49)

3.13 (0.35)

2.35 (0.32)

9.26 (0.54)

11.94 (0.60)

\({\sigma }_{D}^{2}/{\sigma }_{P}^{2}\)(%)

0.77 (0.28)

0.90 (0.31)

0.87 (0.32)

0.00 (0.38)

0.35 (0.41)

0.09 (0.39)

0.04 (0.40)

0.16 (0.35)

0.34 (0.36)

\({\sigma }_{A}^{2}/{\sigma }_{G}^{2}\)(%)

98.17 (0.66)

97.36 (0.89)

97.27 (0.99)

99.93 (7.63)

94.76 (5.78)

97.23 (11.89)

98.52 (16.45)

98.30 (3.66)

97.22 (2.87)

\({\sigma }_{D}^{2}/{\sigma }_{G}^{2}\)(%)

1.83 (0.66)

2.64 (0.89)

2.73 (0.99)

0.07 (7.63)

5.24 (5.78)

2.77 (11.89)

1.48 (16.45)

1.70 (3.66)

2.78 (2.87)

ADR

\({\sigma }_{P}^{2}\)

1355963

1812.48

1268.69

4215.08

717.624

3056.15

12.6991

17693.8

16336.8

\({\sigma }_{A}^{2}/{\sigma }_{P}^{2}\)(%)

41.10 (0.81)

33.27 (0.82)

30.90 (0.81)

5.01 (0.43)

6.38 (0.49)

3.13 (0.35)

2.35 (0.32)

9.25 (0.54)

11.94 (0.60)

\({\sigma }_{D}^{2}/{\sigma }_{P}^{2}\)(%)

0.51 (0.32)

0.54 (0.32)

0.52 (0.36)

0*

0.14 (0.47)

0.09 (0.39)

0.04 (0.40)

0.14 (0.40)

0.34 (0.36)

\({\sigma }_{ROH}^{2}/{\sigma }_{P}^{2}\)(%)

0.17 (0.11)

0.25 (0.12)

0.24 (0.13)

0.07 (0.12)

0.13 (0.14)

0*

0*

0.01 (0.12)

0*

\({\sigma }_{A}^{2}/{\sigma }_{G}^{2}\)(%)

98.38 (0.68)

97.68 (0.92)

97.62 (1.02)

98.53 (2.30)

95.94 (6.11)

97.23 (11.93)

98.52 (16.76)

98.39 (3.74)

97.22 (2.87)

\({\sigma }_{D}^{2}/{\sigma }_{G}^{2}\)(%)

1.22 (0.75)

1.60 (1.01)

1.63 (1.12)

0*

2.09 (6.91)

2.77 (11.89)

1.48 (16.45)

1.46 (4.20)

2.78 (2.87)

\({\sigma }_{ROH}^{2}/{\sigma }_{G}^{2}\)(%)

0.40 (0.26)

0.72 (0.37)

0.75 (0.40)

1.47 (2.25)

1.97 (2.21)

0*

0*

0.15 (1.29)

0*

  1. Model A, additive model; AD, additive + dominance model; ADR, additive + dominance + ROH model
  2. \({\sigma }_{P}^{2}\), phenotypic variance (excluding the herd-year-season variance); \({\sigma }_{A}^{2}\), additive genetic variance; \({\sigma }_{D}^{2}\), dominance variance; \({\sigma }_{ROH}^{2}\), ROH variance; \({\sigma }_{G}^{2}\), genetic variance (\({\sigma }_{A}^{2}+{\sigma }_{D}^{2}\) for model AD, and \({\sigma }_{A}^{2}+{\sigma }_{D}^{2}+{\sigma }_{ROH}^{2}\) for model ADR)
  3. 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])
  4. *The corresponding variance component was fixed to 0 (because its initial estimate was slightly negative)
Back to article page

Genetics Selection Evolution

ISSN: 1297-9686