Introduction Daily care and management of sires in an artificial insemination (AI) center can have a large influence on semen quality and sperm output. A typical boar produces from 1100 to 1200 doses of semen per year (22 doses/wk x 52 wks) and therefore, semen quality of a single sire influences a large number of matings and services per year. A rule of thumb is that each female inventoried w...