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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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