American Calan
Precision Feeding Systems
OUR LEGACY
The origins of our innovation trace back to 1963, when Dr. Peter Broadbent in Scotland conceptualized a system for individually feeding group-housed animals. This led to the development of the Calan Broadbent Door, patented in 1966. In 1972, during a demonstration at the University of New Hampshire, Douglas Briggs—a young feed specialist—recognized the system's potential to revolutionize livestock nutrition. By 1973, he acquired the rights and founded American Calan Inc. in Northwood, New Hampshire.
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Doug Briggs was a visionary who championed the adoption of Total Mixed Rations (TMR) in the U.S., significantly influencing modern ruminant feeding practices. Under his leadership, American Calan introduced the Data Ranger in the early 1990s—the only mobile TMR mixer designed specifically for research. Doug passed away on June 30, 2023, leaving behind a legacy of innovation and dedication. His contributions have been instrumental in advancing ruminant nutrition research globally.
Our Impact
​Today, American Calan remains committed to advancing animal nutrition research by providing reliable, precision feeding systems and responsive technical support. As the demands of animal science evolve, we continue to invest in new technologies and product innovations that support the next generation of research—helping our partners generate accurate, meaningful data with confidence.
Meet our team
Our team is dedicated to advancing precision feeding and animal research through reliable, innovative solutions. With decades of experience and a passion for supporting agricultural science, we work closely with researchers and producers around the world to ensure every Calan system delivers consistent performance and meaningful data.
Owner and President
Darrell Briggs
Darrell assembled his first Calan door in 1983. Darrell started his professional career in the early days of computer networking and software industry when he joined Cabletron Systems in Rochester NH. This led to a 25+ year career leading teams in the enterprise software industry. Darrell has a passion for Data which will come in handy as he navigates Calan through its next generation of growth.
Sales and Marketing
Karla Pedersen
Karla Pedersen is based in the Black Hills of South Dakota. Karla has made significant contributions to the ruminant research field by providing cutting-edge research equipment to private companies and universities worldwide. She has honed a deep expertise in individual feed intake and emissions research. Karla is known for her ability to build and maintain long-term relationships with researchers and staff in the agricultural community, solidifying her reputation as a trusted partner in the industry.
Head of Design and Installation
Dana Rundgren
For over 28 years Dana has played an integral role in the design and installation of Calan Systems all over the world. Need a blueprint for your current Calan System, Dana probably has it!! Need help with a new design or redesign let Dana help you!
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Calan's Swiss Army Knife
Chris Corning
The expert in all things Calan. Have a question on the Data Ranger scale system or the Calan circuit boards? Chris has the answer. Chris is also an expert marksmen competing in regional shooting competitions and is also a board member and trailmaster of the Northwood Crankpullers snowmobile club.
Paying Tribute to Douglas Briggs
The Distinguished Pioneer in Nutritional Research for Livestock
He Had A Feeding Impact Behind the Scenes
BY GONZALO FERREIRA, VIRGINIA TECH
There is no doubt that many dairy nutritionists are leaving or have left a footprint in the area of dairy cattle feeding.