. Feed
conversion results are generally standardized for body
size using statistical procedures or based on estimates of
energy requirements for maintenance. Males with superior
feed conversions are selected through mass
selection, sib selection, or index methods and, in some
cases, female are selected based on the performance of
their male sibs. Indirect selection methods, such as
serum very low density lipoprotein concentrations, have
been attempted but have generally not been utilized as
successfully in industrial settings