The Sire Progeny Test remains the most extensive unbiased evaluation of progeny performance available to Berkshire breeders. Currently, twelve measures of progeny performance are recorded on every pig that completes the testing period. These include evaluations of carcass composition, growth performance, meat quality and eating quality. These data are complied and returned to participating breeders for use within their individual breeding or marketing program. In general, the production goals employed by purebred breeders who utilize the Progeny Test can be characterized as either: mainstream pork production aimed at efficient production of lean product; or production aimed at enhanced eating quality.