- Teaching & Student Service
- Grants & Projects
- Honors & Awards
- Professional Experience
Dr. Katharine Knowlton grew up on a dairy farm in Connecticut and earned her B. S. in Animal Science at Cornell University, her M.S. at Michigan State and her Ph.D. at the University of Maryland. Dr. Knowlton is a Professor in the Department of Dairy Science at Virginia Tech with a research and teaching program focused on environmental issues affecting the dairy industry. Dr. Knowlton is assistant coach of the Virginia Tech dairy judging team (national champions in 2006, 2008, 2009 and 2013!!), judges dairy shows across the US, and owns a small herd of Jersey cows. She is Principal Investigator or co-PI on $11.2 million in externally funded grants, and has authored 67 peer-reviewed papers.
Courses taught: Animal Agriculture and the Environment (DASC/APSC 3134); Dairy Cattle Evaluation (DASC 2484); Dairy Handling 101; Dairy Science First Year Experience
Lead undergraduate advisor and Curriculum Coordinator
Coach of the Virginia Tech Dairy Judging Team
(National champions 2006, 2008, 2009 and 2013)
Excretion and environmental fate of antibiotics and antibiotic resistant genes by livestock
Phosphorus intake and excretion in lactating cows
Dr. Knowlton is Principal or Co-Principal Investigator on $11.2 million in externally funded grants for research on environmental issues pertaining to animal agriculture. Funding agencies include USDA, NSF, industry groups, and conservation organizations.
Public attitudes regarding the therapeutic use of antibiotics in the dairy industry
Publication access links
Peer reviewed materials at PubMed
Virginia Cooperative Extension Publications
Knowlton, K. F. and P. P. Ray. 2014. Water-related issues in sustainability: Nitrogen and phosphorus management. In E. Kebraib (Ed.) Sustainable Animal Agriculture. CAB International.
Ray, P. P., Z. Zhao and K. F. Knowlton. 2014. Emerging contaminants in livestock manure: Hormones, antibiotics, and antibiotic resistance genes. In E. Kebraib (Ed.) Sustainable Animal Agriculture. CAB International.
Knowlton, K. F., D. K. Beede and E. Kebreab. 2010. Phosphorus and Calcium Requirements of Ruminants. pp 112-132 In D. Vitti and E. Kebraib (Ed.) Phosphorus and Calcium Utilization and Requirements in Farm Animals. CAB International.
Z. Zhao, K. F. Knowlton and N. G. Love. 2008. Hormones in Waste from Concentrated Animal Feeding Operations. pp 292-329 In D. Aga (Ed.), Fate of Pharmaceuticals in the Environment and in Water Treatment Systems. CRC Press, Taylor and Francis Books.
Refereed Book Reviews
Knowlton, K. F. 2004. Review of "Minerals in Animal and Human Nutrition, 2nd edition". Poultry Sci. 83: 132.
Increase understanding of the interaction of animal agriculture and the environment
Effect of nutrition on nutrient excretion by dairy cows, and potential impact on water quality
International Visiting Research Scholar, Peter Wall Institute for Advanced Studies,
University of British Columbia
Dedicatee, the Milky Way (annual publication of the Dairy Club at Virginia Tech)
American Dairy Science Association (ADSA) , Cargill Young Scientist Award
Certificate of Teaching Excellence, Virginia Tech, College of Agriculture and Life Sciences
ADSA Foundation Scholar Lecture Award in Dairy Production
Epsilon Sigma Phi National Honorary Extension Fraternity, State Team Award
ADSA Graduate Student Paper Competition winner
Purina Mills Graduate Research Fellowship
University of MD College of Agriculture, Richard F. Davis Memorial Scholarship
National Science Foundation Graduate Research Fellowship
American Feed Industry Association Graduate Scholarship
American Jersey Cattle Association/Bansen Scholarship
Purina Mills Graduate Research Fellowship (declined for NSF fellowship)
Professor, Department of Dairy Science, Virginia Tech
Associate Professor, Department of Dairy Science, Virginia Tech
Assistant Professor, Department of Dairy Science, Virginia Tech
Research Scientist. Department of Dairy Science, Virginia Tech
Graduate Research Assistant, Department of Animal and Avian Sciences,
University of Maryland
Graduate Research Assistant, Department of Animal Science, Michigan State University
Undergraduate Research Assistant, Department of Agricultural and Biological Engineering, Cornell University
1984-1987 Farm Manager, Mixed livestock and dairy farm, Portland, Connecticutt
PhD 1997 University of Maryland & USDA-ARS Beltsville: Dairy Nutrition
MS 1993 Michigan State University: Dairy Nutrition
BS 1991 Cornell University: Animal Science
Visit YouTube Channel: Virginia Tech Dairy Cattle Judging for more judging videos!
Dairy Judging 101: Judging heifers, Part 3 (size) (Above)
Dairy Judging 101 Practice classes: Brown Swiss 4 year olds (Above)
Visit YouTube Channel: Talking Cows with KFK and Uncle Al to see the latest episodes of cow talk!