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10-637 Animal Models
Lesson 12 Assignment

L. R. Schaeffer, March 1999

Below are data on ten (10) dogs in two different competition trials. Assume a repeated records animal model with trials and age of dog as fixed effects. Assume the heritability of trial performance is .25 with a repeatability of .40.

Animal Sire Dam Age Trial 1 Trial 2
1 - - 7 135  
2 - - 6 110  
3 1 2 4 98 120
4 1 2 4 108 140
5 1 - 5 82 104
6 1 - 5 145 131
7 3 - 2 105 76
8 3 4 2   129
9 5 - 1   137
10 5 6 1   97

1.
Write the model for these data (not in matrix form).
2.
Construct HMME and solve.
3.
Provide the correct prediction error variances and reliabilities for the EBV.
4.
Show one round of REML estimation for the variances.
5.
(Extra Points) Show one round of Gibb's sampling.


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This LaTeX document is available as postscript or asAdobe PDF.

Larry Schaeffer
1999-02-26