Welcome to Great Lakes Sire Service
Established in 1995, Great Lakes Sire Service (GLSS) offers custom semen cyropreservation for beef, dairy, cervidae, and ovine species. GLSS began in 1995 as a mobile lab providing strictly on-farm collection and freezing services.
Today we have grown to a permanent facility that can safely house and handle bulls of all size. Our services have expanded to include breeding soundness evaluations, semen collection & processing as well as semen storage & shipments worldwide.