WOMBAT Example7

Data for birth, weaning, yearling, yearling and final weight of beef cattle
from the Wokalup selection experiment.

Fit maternal genetic and permanent environmental effects as additional
random effects.

Fit age, nested within sex, and dam age as covariables; fit
contemporary groups, birth type and heifer factor as crossclasified
fixed effects.

A : univariate analysis for birth weight
B : unvariate analysis for weaning weight
B1: as B, but reworked setting up NRM inverse externally to illustrate
    use of GIN option
B2: as B, but fitting fixed effects only and a user-defined basis
    function for the covariable dam age
B3: as B, but using a random regression model to allow for different
    genetic variances for different sexes
C : univariate analysis for weaning weight; non-zero direct-maternal
    genetic covariance
D : bivariate analysis of birth and weaning weight
E : bivariate analysis of birth and weaning weight; non-zero direct-maternal
    genetic covariances
F : trivariate analysis of birth, weaning and yearling weights
G : four-variate analysis of all weights together
H : like G with reduced model: no maternal effects for final weight
I : like G but estimating reduced rank covariance matrices

