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.


