- calf
a factor with levels indicating the unique genetic groups
and individuals
- dam
a numeric vector of maternal identities
- sire
a numeric vector of paternal identities
- damGG
a factor of maternal identities with genetic groups
inserted instead of NA
- sireGG
a factor of paternal identities with genetic groups
inserted instead of NA
- sex
a factor with levels female
male
- WWG
a numeric vector of pre-weaning weight gain (kg) for five
beef calves