The WBIA has conducted and overseen a central performance bull test each year since 1957 and remains the oldest bull development program in the country. Since 1970, young beef bulls from all over Wisconsin and throughout the Midwest have been brought by top breeders to the University of Wisconsin - Platteville Pioneer Farm. Bulls prospects are developed on a forage based ration with their performance measured over a 100 day period. The top 60-65 prospects are sold at auction on the first Saturday in April at the UW-Platteville Pioneer Farm with the auction carried live online thru DV Auction. ​