University of Florida

Timothy J. Hackmann

Assistant Professor

Research Summary

Dr. Hackmann attempts to improve efficiency of livestock through study of microbes that inhabit the gastrointestinal tract.  Specifically, his program focuses on how microbes of the rumen respond to excess energy.  He has found that when given a small amount of excess energy, microbes respond economically by storing the excess energy as glycogen.  However, when given a large or prolonged excess, microbes respond wastefully by burning it off as heat (energy spilling).  By further characterizing these responses to excess energy, Dr. Hackmann aims to maximize efficiency of microbes and that of ruminant livestock in turn. 

Dr. Hackmann has also engaged in the study of forage nutrition, wild ruminant nutrition, and mathematical modeling.


May, 2013      Ph.D. (The Ohio State Interdisciplinary Ph.D. Program in Nutrition), The Ohio State University, Columbus, OH

December, 2008       M.S. (Animal Science), University of Missouri-Columbia, Columbia, MO

December, 2006      B.S. (Biological Sciences), University of Missouri-Columbia, Columbia, MO

Current Academic Position:

May, 2013-Present; Assistant Professor of Gastrointestinal Microbiology, Department of Animal Sciences, University of Florida:  May 2013

Professional Memberships

Nutrition Advisor, Antelope and Giraffe Taxon Advisory Group, Association of Zoos and Aquariums
American Dairy Science Association
Member of Phi Beta Kappa

Honors and Awards

J.B. Russell Young Scientist Award for Best Oral Presentation, 2013 Congress on Gastrointestinal Function




Timothy J. Hackmann, Ph.D.

PO Box 110910
Gainesville, FL 32611

2250 Shealy Dr.
Gainesville, FL 32611