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Table 2 Summary of results of analysis with the piecewise-linear mixed model

From: Mapping quantitative trait loci (QTL) in sheep. I. A new male framework linkage map and QTL for growth rate and body weight

Fixed effect

DF

F

P

Sex

1

10.23

0.0014

GR00-43

1

16115.39

< 0.0001

GR43-56

1

18.93

< 0.0001

GR56-83

1

391.35

< 0.0001

GR83-98

1

959.88

< 0.0001

Sex × GR43-56

1

31.79

< 0.0001

Sex × GR56-83

1

16.33

< 0.0001

Sex × GR83-98

1

8.51

0.0035

Random effect

Variance

Z*

Animal

0.683

5.91

Animal × GR00-43

1.33 × 10-3

9.20

Animal × GR43-56

9.08 × 10-4

2.20

Animal × GR56-83

3.51 × 10-3

5.09

Animal × GR83-98

2.08 × 10-3

0.66

Residual

6.156

35.97

  1. The first half of the table shows the fixed effects, and the second half shows the random effects (variance components); GRxx-yy refers to the growth rate in the interval xx-yy weeks, expressed as a change from the growth rate in the previous interval; see additional file 2 for model details; the F statistics are incremental ones, i.e. testing the effect of that term, given the previous terms included in the model, *Z = estimated variance component/SE of its estimate; values greater than 2 can be considered 'significant'
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Genetics Selection Evolution

ISSN: 1297-9686