About Us

About Us

We are positioned to provide you with many advantages.

  • Our location and facilities allow for dry conditions throughout the years and promote foot and leg health. The heifers are comfortable and never crowed. The heifers are not on cement. We do not have a need for hoof trimming.
  • Our partners are Dairy Producers, Nutritionists and Dairy Veterinarians.
  • Everything is AI’ed to the specs of the heifer owners. We pride ourselves on accommodating our owners to meet their needs.
  • We handle all the heifers like they are in a “dairy setting”, with head catches, automatic waterers, and a calm enviroment.
  • The pens are walked daily and each heifer has a visual appraisal.
  • The Heifer Authority facilities are EPA compliant.
Alexandra Hahn
Herd Manager
Alex grew up in Northern Colorado where she was involved in 4-H showing cattle, goats and poultry. She received her Associates Degree in Farm and Ranch Management at Eastern Wyoming College. She joined THA in November 2016 as a Herdsperson and was promoted to Herd Manager in April 2019. Her duties at THA include load scheduling, data entry, inventory control, vaccination scheduling, and daily planning. She loves working with cows and enjoys spending time with her husband E.J., and their son Skylar.
Alexandra
Armando Fonrouge
Assistant Operations Manager
Armando grew up in Veracruz, Mexico where he studied Veterinary Medicine\Bovine Reproduction at the University of Veracruzana. Armando has 7 years of experience working with Dairy cattle in the USA. He joined THA in April 2018 and currently does our pregnancy checks on P2 (70+ days carried calf) and P3 (180+ days carried calf) heifers. He is grateful to have also acquired new skills such as relief feeding, manure removal, and welding during his time here at THA. Armando enjoys spending time with his wife Kereny and their two sons, Antonio and Lucas.
Armando
Bailey Diehl
Herdsperson
Bailey grew up helping her family in Northern Colorado on their 4th generation cow/calf and dryland ranch. She enjoyed showing beef cattle in 4-H and helped start an FFA chapter at her High School. She received her Associates Degree in Agriculture and Business Technology at LCCC. She joined the THA team in May 2018 as a Herdsperson doing estrous detection, inseminations, vaccinations, health checks and sorting cattle.
Bailey
Braiden Tucker
Feeding\Maintenance
Braiden grew up in Wellington, Colorado where he learned mechanical skills while working alongside his dad in their truck repair shop. He joined our team in May 2019. He stays busy feeding heifers and keeping up with equipment and yard maintenance. He also enjoys working with animals on the heifer crew when he can.
Braiden
Chad Sommerville
Operations Manager
Chad was born in Southwest Missouri and moved to Wisconsin in 2002 with his parents, Seth and Sara. In 2006 the family moved to Colorado where his dad, Seth, began managing THA when the company was at its infancy. While growing up he helped-out on the feedlot whenever he was needed. After graduating High School May 2016, Chad joined the THA Team full-time. Throughout his time here he has learned a wide variety of skills ranging from equipment operation, feeding, pen maintenance and welding. He has also developed skills in working cattle, estrous detection, health checks, insemination, and vaccinations. Chad is happily married to his wife Tristen and the two enjoy raising goats and dogs. During his off time, Chad enjoys hunting, fishing, searching for arrowheads and is a big fan of the sport of MMA.
Chad
Dakota Taylor
Herdsperson
Dakota grew up in Northern Colorado where her family raises poultry, goats, horses and llamas. She developed a love for animals at an early age. She joined the THA team in January 2019 as a Herdsperson and is grateful to have learned new skills including estrous detection, insemination, sorting and health checks. Dakota is a natural when it comes to her stockman-ship and cattle handling skills. She looks forward to learning new things and growing with our company.
Dakota
Fermin Sanchez
Lead A. I. Technician
Fermin grew up in Mexico. He attended 3 years at a technical school in Durango, studying Ag Science. In 2007, Fermin moved to the USA doing odd jobs working in restaurants, painting houses, and landscaping. Soon after he began working at different dairies in Northern Colorado and Southern Wyoming as a Herdsperson. He joined the THA Team full-time in November 2007, as Herdsperson/A.I. Technician. Fermin consistently gets excellent conception rates and is a beneficial member on the Heifer Crew or the Maintenance Crew. He enjoys antique collector cars, cooking and listening to several genres of music.
Fermin
Lane Johannsen
Feed Manager
Lane grew up in Iowa and in 1975 moved to Northern Colorado with his family, where they started a 40 cow Dairy. He and his dad grew the family farm to 300 cows. When Lane’s father retired in 2005, Lane took over the family farm which stayed in operation until 2010. Due to low milk prices he chose to participate in the buy-out program and sold his herd. In 2011 Lane joined the THA team as the Feed Manager. His duties at THA include oversight on feed call changes, feed inventories, feed purchases, and equipment maintenance. He continues to raise dairy steers on the old family farm, purchasing them at 300lbs and growing them to 800lbs.
Lane
Maycie Sommerville
Herdsperson
Maycie, the youngest daughter of Seth and Sara Sommerville, was born in Wisconsin and grew up in Northern Colorado. She joined the THA team in October 2014, working part-time. She has developed several skills over the years including estrous detection, straw preparation, health checks, and cattle handling. She enjoys working with younger cattle and keeping supplies organized. She loves to learn new things and is looking forward to learning insemination, welding, and machine operating.
Maycie
Nicole DiNicola
Assistant Herd Manager
Nicole was born and raised in California on her family’s 900 cow Dairy. She was involved in 4-H for 10 years, showing her family’s Dairy cows. In 2010 she and her dad moved to Northern Colorado where they started a 70 head Jersey Dairy and routinely achieved the annual Milk Quality Award. Nicole was a DHIA herd tester when she wasn’t busy at her own Dairy. She joined the THA crew part-time as a Herdsperson in 2013 and decided to be full-time in April 2018 becoming the Assistant Herd Manager. She assists in day to day Herdsperson duties as well as animal inventory/control and is the Heights/Gains recorder.
Nicole
Sara Sommerville
Assistant Manager
Sara grew up in Southwest Missouri. She has 18 years of experience in the Dairy Industry. As a teenager she started milking cows after school for a local Dairy Farmer and discovered how much she enjoyed working with Dairy cattle. At 16 she learned to inseminate cows. In High School she was involved in FFA, participating in Dairy Cattle and Dairy Products Judging, and was FFA Chapter President her Senior year. After she and her husband Seth got married and started a family, they moved to Northern Missouri where Seth managed a small dairy and Sara milked cows in the evenings. 4 years later they moved to Wisconsin where Seth managed weaned calves at a large calf ranch, and Sara was a stay-at-home mom for their three kids, Ashton, Chad, and Maycie. In 2006 they moved to Northern Colorado where Seth became the Operations Manager at THA, and Sara helped out at the farm as needed. Soon after, she took a full-time position at THA and is now the Assistant Manager. Employee management, Office management, and Human Resources are a few of her responsibilities. She enjoys gardening, beekeeping, and fishing when time allows.
Sara
Seth Sommerville
CEO
Seth grew up in rural Southwest Missouri. At an early age his animal interests had him working at an exotic animal ranch near his home. At the age of 16, he began working part-time through High School on a 120 cow Dairy. Milking, feeding, inseminating and managing health for the herd gave him his start in the Dairy Industry. Tough dairy economy led him to leave the farm in 1995 where he took a job in Springfield, MO as Shift Supervisor at an ice manufacturing plant. Three and a half years later, his passion for dairy cows sent him to Northern Missouri to manage another small Dairy herd. His desire to work on a large operation and limited growth potential in the state of Missouri had him looking elsewhere or opportunities. In 2002, he joined a large calf ranch in De Pere, WI as the Heifer Manager where he gained his large herd experience. In 2006, Seth met a Wisconsin group that started a Dairy heifer grow lot in Northern Colorado, called The Heifer Authority, LLC. After meeting with the THA group and a trip to their CO facility, Seth and Sara and their three kids, Ashton, Chad and Maycie, moved from Wisconsin to manage the new Colorado lot. Seth joined THA partnership 5 years later. Watching THA grow from 600 head in 2006 to the 7500 head that we have here today has been a rewarding experience. He enjoys teaching and training employees, and watching their skills and interests develop. Other areas of occupational interest include: Operational Efficiency through facility design, Low stress animal handling systems, and disease prevention/control. Seth looks forward to using the knowledge he has gained over the past 25 years in the industry to continue growing THA as a company and providing clients with exceptional Dairy Replacement heifers.
Seth