Since 1995, Great Lakes Sire Service (GLSS) offers custom semen cyropreservation for beef, dairy, and cervidae 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 exams, semen collection & processing as well as semen storage & shipment.

The permanent facility, located in southern Michigan, provides boarding for bulls needing regular collections or larger quantities of semen for the producer. Semen is processed in the lab and stored in GLSS tanks until shipment to the client or their customers. Today GLSS has the capacity to hold over 300,000 straws.

In January of 2001 GLSS became CSS health certified. Certified semen services (CSS), a subsidiary of National Association of Animal Breeders provides auditing services to ensure the health and identity of semen processed by its 33 member organizations. With no other CSS participants in Michigan or Indiana, beef and dairy producers now have the opportunity to offer their customers semen processed under stringent health standards. Since the outbreak of TB (bovine tuberculosis) in Michigan, interstate animal movement has been restricted. Commercial AI studs and progressive cattlemen marketing semen can now have semen collected in Michigan and shipped anywhere, including many foreign countries.

In 2010 we completed our new facility which includes a walk in cooler for semen processing and allows the storage, shipping, laboratory, and offices to be under one roof. We have also added 2 more large storage tanks to give us the capacity to house over 450,000 straws. Over 60 vapor shippers are available throughout the year to ship semen domestically; however, shippers are a rare commodity from September to January due to AI in the whitetail industry during this time, so please PLAN AHEAD. Semen to be transferred or shipped from our facility requires a release form to be faxed, emailed, or mailed into us. Please refer to the bottom of the Services page to download a current form.

Whitetail customers can still capture the value of Great Lakes Sire Service processing techniques and services through our allied cooperators that will do the on-farm collection. These cooperators include: AI Diversified (Kelly Butler), Southern Veterinary Services (Dr. Greg Stewart), and Sugarcreek Veterinary Clinic (Dr. Shane Donley).

For over six years, Great Lakes Sire Service has provided bovine collection for sexed semen. In 2010, Great Lakes Sire Service became a more active participant in developing sexed semen trials for the whitetail industry.

We encourage visitors to stop in Monday through Friday during regular business hours to tour our facility. To obtain more information on our services or to schedule your next collection, please call us at 269-489-9888.