Mary E. Drewnoski

Mary E. Drewnoski

Associate Professor
Beef Systems Specialist

Twitter: @cattlenerd


  • Ph.D., North Carolina State University, Animal Science & Nutrition 2009
  • M.S., North Carolina State University, Animal Science 2006
  • B.S., Berea College, Agriculture and Natural Resources 2004


  • Associate Professor, Beef Systems Specialist, University of Nebraska-Lincoln 2019-present
  • Assistant Professor, Beef Systems Specialist, University of Nebraska-Lincoln 2014-2019
  • Assistant Professor, Beef Nutrition, University of Idaho 2012-2014
  • Postdoctoral Research Associate, Feedlot Nutrition, Iowa State University 2009-2012


"She is a part of an interdisciplinary team evaluating Economical Systems for Integrated Crop and Livestock Production in Nebraska. Her current research and extension program is focused on the utilization of crop residues and cover crop forage for backgrounding calves and feeding beef cows."


  • Published Peer Reviewed Manuscripts (42 total)
  • Professional Meeting Abstracts (52 total)
  • Peer reviewed Extension Publications (47 total)
  • Experiment Station Reports (20 total)


Peer Reviewed Extension Publications

  • Drewnoski, M. E., B. E. Anderson, P. J. Kononoff, and M. E. Reynolds. 2019. Nitrates in Livestock Feeding. NebGuide G1779.
  • Drewnoski. M. 2019. Frequently Asked Questions about Grazing Corn Residue Fields with Excessive Downed Corn. BeefWatch Electronic Newsletter. November.
  • Drewnoski. M. and D. Redfearn. 2019. Annual Forage Options for July or August Planting. BeefWatch Electronic Newsletter. July
  • Drewnoski, M. E. and D. D. Redfearn. 2018. Nutrient Removal by Cows Grazing Corn Residue. CropWatch Electronic Newsletter. November.
  • Drewnoski, M. E. and D. Redfearn. 2018. Reducing Nitrate Concerns When Grazing Forage Cover Crops. CropWatch Electronic Newsletter. July.
  • Drewnoski, M. E. 2017. Wintering Growing Calves Using Corn Residue: The Value of Bypass Protein. BeefWatch Electronic Newsletter. October.
  • Drewnoski, M. E. 2017. Studies Show Minimal Soil Compaction with Winter Grazing. 2017. CropWatch Electronic Newsletter. October.
  • Drewnoski, M and D. Redfearn. 2015. Annual Cool-Season Forages for Late-fall or Early-Spring Double-Crop. NebGuide G2262.

Non-Peer-Reviewed Educational Publications


Proceeding papers


Research Reports

Refereed Journal Articles

Profile pic of Mary Drewnoski
Areas of Expertise
Beef Cattle
Ruminant Nutrition