Our People

A Partnership
of Trust

We do things differently. Our unique approach is engrained in who we are and it provides our customers with profitable, safe products and services. From customer service, operations and quality assurance to our superior technical teams, we make decisions that are right for producers and consumers.


Brian Knochenmus


Jon Knochenmus

President Emeritus

Glenn Bader

VP Marketing & Information Technology

Dennis Conlon

VP Operations

John DeVos

VP Global Sales

Tony Goebel

VP Sales Staff Development

Blaine Hansen, Ph.D.

VP Technical Services

Chad Jensen

VP Finance & Administration

Diane Wagner

VP Corporate Technology

Michael Ziebell

VP & Managing Director trū Shrimp Company

International Management

Keith Yancey

General Manager, Ralco Ecuador

Martin Sanchez

General Manager, Ralco Uruguay

Edwin Grim

General Manager, Ralco Europe

Rod Huisman

General Manager, Ralco Asia Pacific

Swine Technical Team

Jim Hedges, Ph.D.

Chief Technical Advisor

Russell Fent, Ph.D.

Director of Swine Technical Group

Dennis Liptrap, Ph.D.

Senior Swine Nutritionist

Kevin Touchette, Ph.D.

Senior Swine Nutritionist

Shelly Tiede, M.S.

Swine Nutritionist

Kelly Peper, Ph.D.

Associate Swine Nutritionist

Tim Olson

Swine Formulation Specialist

Carson Cooper, M.S.

Swine Research Coordinator

Ruminant Technical Team

Heb T. Purvis, Ph.D.

Senior Ruminant Nutritionist

Del Davis, Ph.D.

Ruminant Nutritionist

Bill Holloway, Ph.D.

Ruminant Nutritionist

Brandon Rodriquez, M.S.

Ruminant Nutritionist & Research Manager

Amanda Lage

Ruminant Research Technician

Poultry Technical Team

Bob Stock, Ph.D.

Director of Poultry Research and Development

Pongsawat Suttiluck, DVM

Poultry Technical Manager

Agronomy Technical Team

Evan Johnson

Agronomy Research Manager

Rachel Raths


Emma Christensen

Greenhouse Manager

Technology Development

Richard Lamb

Senior Technology Director

Jessica Fox, DVM

Director of Veterinary Services & Biosecurity

Mike Johnson