Bullnanza Stud Services purchases Reproduction Enterprises

As of Monday, November 22, 2021 the Bullnanza Stud Services team is proud to announce the purchase of industry powerhouse Reproduction Enterprises Inc. (REI), located in Stillwater, Oklahoma.
The Bullnanza team is honored to purchase such a staple business in the agricultural industry, however, they plan to change the name of REI to better reflect the Bullnanza brand.
Explore Bullnanza's services at their website: www.bullnanza.com, and plan a trip to visit their Sweetwater, Texas or Stillwater, Oklahoma location.

Welcome to Reproduction Enterprises, Inc.

Reproduction Enterprises, Inc. (REI) was incorporated in 1978 as a custom semen collection facility. In 1980 a complete embryo transfer facility was added. In 1999 we expanded the business via a number of services. REI currently offers semen collection, storage, artificial insemination, semen sales, embryo transfer and other associated services throughout the United States as well as internationally. REI has been a member of NAAB for several decades as well as maintaining a satisfactory CSS certification.

Although the majority of the products and services are with bovine, a number of these services are available for small ruminants (sheep, goats, white-tail deer). REI also provides various training workshops for several of the above species. REI has maintained a reputable semen quality control program and is becoming one of the nation’s most efficient semen shipping and distribution centers in the southern part of the United States.


We are currently needing to fill these positions. Full job descriptions are available below.

If you are qualified, please contact us at 1-405-377-8037.

Mixed Practice Veterinarian

View Job Description


Horses • Cattle • Bison • Deer • Goats • Sheep • Dogs

REI is strategically located in the south central part of the United States, deep in the heart of the livestock industry and near the intersection of I-35 and I-40. More specifically, we are located near Stillwater, OK. This is also home of Oklahoma State University and the Oklahoma State University Center for Veterinary Health Sciences, which avails itself to first class veterinary facilities, services and staff whenever needed.

It is in fitting with REI’s mission and vision to provide cutting edge technology to the local livestock producers. Oklahoma and the surrounding areas are known for some of the highest profile breeders in the United States and deserve the capability of applying new technology in a timely and efficient basis.

REI Semen
Division & Collections

REI began as a custom semen collection facility in 1978 and has been working to improve the process ever since.

Semen Division
& Collections

Training Courses

At Reproduction Enterprises, we host a variety of training courses covering artificial insemination, embryo transfer, and palpation. View our training course offerings below, and please contact us if you have any questions.

Training Courses

A Variety of
Embryo Services

We offer embryo services for cattle and small ruminants. These services can be performed at our facility or on-farm. Learn More Click the link below!

Embryo/AI Services

Interested in
Working With Us?

Thank you for your interest in Reproduction Enterprises! If you would like more information about our operation please feel free to contact us anytime at 1-405-377-8037!

Contact Us Today!