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Table 1 Marker-based estimates of heritability (h 2 ), additive genetic variance (V A ) and residual variance (V E ) for ADG, DMI, MBW and RFI in the Cycle VII, Angus, Hereford and Simmental × Angus populations 1

From: QTLs associated with dry matter intake, metabolic mid-test weight, growth and feed efficiency have little overlap across 4 beef cattle studies

Trait

Cycle VII

Angus

Hereford

Simmental × Angus

 

h2

VA

VE

h2

VA

VE

h2

VA

VE

h2

VA

VE

ADG (kg/d)

0.30

0.01

0.03

0.19

0.01

0.05

0.27

0.02

0.05

0.23

0.01

0.03

DMI (kg/d)

0.35

0.39

0.71

0.35

0.85

1.55

0.41

0.66

0.94

0.27

0.28

0.75

MBW (kg0.75)

0.47

25.73

29.49

0.49

38.08

39.78

0.50

24.02

23.79

0.38

8.58

14.17

RFI (kg/d)

0.49

0.19

0.19

0.21

0.27

0.98

0.45

0.32

0.40

0.32

0.20

0.42

  1. 1ADG: average daily gain, DMI: dry matter intake, MBW: mid-test metabolic body weight, and RFI: residual feed intake.
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BMC Genomics

ISSN: 1471-2164

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