David Trowbridge
Professional Roles
- Director, Index Genetics
- President, Gregory Companies
- President, Gregory Research Feedlots, Inc.
- Board Member, Iowa Cattlemen’s Foundation
- Board Member, Certified Hereford Beef
- Past President, Iowa Cattlemen’s Association (2018-2019)
- Past President, Certified Hereford Beef
- C-Lock and Merck Health Product Expert
Professional Experience
- 48 years managing Gregory Feedlots
- Leading Feedlot in USA for Data Collection
- Developed Gregory Performance Management Program
- Spoken nationwide on retained ownership and cattle feeding
- Leadership in ultrasound equipment design/testing for feedlot cattle
- Early developer of packers/individual animal carcass data collection
- Research and product development with universities and feed companies
- Industry boards/task forces to advance the beef industry
Professional Organizations
- Iowa Cattlemen’s Association (2000-2019)
- Iowa Cattlemen’s Foundation (2019-2025)
- American Hereford Association (2014-2018)
- Certified Hereford Beef Board (2014-2025)
- Fremont County Cattlemen’s (2015-2025)
- NCBA Cattle Welfare Committee (2020-2025)
Education
- Bachelor of Science in Animal Science/Science, University of Nebraska-Lincoln (1976)
- Graduate, O’Neill Nebraska High School (1972)
Research Projects & Partners
- Cattle feeding research with universities on profitability, carcass, genetics, minerals, feed efficiency, and management
- Feed and additive ingredient testing with feedlot companies
- Technology development with universities/private companies for cattle performance, predictability, profitability, and marketing
- Developed Gregory Performance Management Program for health, genetics, management, and profitability analysis
- Vertical integration initiatives
- Cooperative integration program for customers and meat packing companies
Animal Health & Genetics
- Developed vaccination/treatment programs nationwide
- Collaborated with universities and companies on animal health/performance
- Worked with breed associations, universities, seedstock, and commercial producers on genetic selection for carcass traits, performance, and profitability
Hobbies / Interests / Passions
- Woodworking
- Fishing / Hunting
- Youth cattle 4-H programs
- Cattle breeding innovation
- Church and faith involvement
Family
- Lives in Tabor, IA; grew up in NE
- Married to Mary for 48 years
- Father of 5 children
- Grandfather of 9