WOMBAT – A program for Mixed Model Analyses by Restricted Maximum Likelihood

Example 3 for WOMBAT

Download example3.tar.gz

This is Example 3 as previously distributed with DFREML.

Data are mature cow weight records from the Wokalup selection experiment, recorded annually in January. Up to 6 records per cow are available. The only fixed effect considered is contemporary groups.

Data are analysed

  • A: fitting a simple repeatability model,
  • B: fitting a full multivariate model, treating records at different ages as different traits, and
  • C: fitting a random regression model with quadratic Legendre polynomials as basis functions and heterogeneous error variances.
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