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

# Example 3 for WOMBAT

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.