Tim DelCurto
Associate Professor
Eastern Oregon Agricultural Research Center - Union
Department of Animal and Rangeland Sciences
EOARC-Union Experiment Station
PO Box E
Union, OR 97883
United States


Ph.D. Animal Sciences, Kansas State University, 1989

M.S. Animal Sciences, Oregon State University, 1986

B.A. General Agriculture, Oregon State University, 1984


Kenric J. Walburger, Micah Wells, Martin Vavra, Timothy DelCurto, Bruce Johnson, and Pricilla Coe. 2009. Influence of Cow Age on Grazing Distribution in a Mixed Conifer Forest.  Rangeland Ecology and Management  62:290-296.

Damiran, D., T. DelCurto, D. W. Bohnert, and S. L. Findholt.  2008.  Comparison of Techniques and Grinding Size to Estimate Digestibility of Forage Based Ruminant Diets.  J. Anim. Feed Sci. and Technology 141:15-35.

K. J. Walburger, T. DelCurto, G. D. Pulsipher, R. L. Hathaway, and G. J. Pirelli.  2008.  The Effect of Fertilizing Forage with Sodium Selenate on Selenium Concentration of Hay, Drain Water and Serum Selenium Concentrations in Beef Heifers and Calves.  Can. Journ. of Ani. Sci.  Accepted.

J. R. Jaeger, K. C. Olson, T. DelCurto, and A. Qu.  2008.  Case Study:  Pattern of Parturition as Affected by Time of Feeding and Predicition of the Time of Day that Parturition Will Occur in Spring-Calving Beef Cows.  Prof. Anim. Scientists 24:247-253.

Walburger, K. J., T. DelCurto, and M. Vavra. 2007.  Influence of forest management and previous herbivory on cattle diets.  Rangeland Ecology and Management 60:172-178.

John A. Tanaka, Neil R. Rimbey L. Allen Torell, David “Tex” Taylor, Derek Bailey, Timothy DelCurto, Kenric Walburger, and Bob Welling.  2007.  Grazing distribution:  The quest for the silver bullet.  Rangelands (August):  38-46.

Daalkhalijav, D., T. DelCurto, D. E. Johnson, S. L. Findholt, and B. K. Johnson.  2006.  Estimating shrub forage yield and utilization using a photographic technique.  Northwest Science 80:259-263.

DelCurto, T., M. Porath, C. T. Parsons, and J. A. Morrison.  2005.  Management strategies for sustainable beef cattle grazing on forested rangelands in the Pacific Northwest.  Invited synthesis paper. J. Range Ecol. Manage.  58:119-127.

Vavra, M., K. Walburger, and T. DelCurto.  2005.  Ungulate ecology of Ponderosa Pine ecosystems.  USDA Forest Service Gen. Tech. Rep. PSW-GTR.

Cook, J. G., B. K. Johnson, R. C. Cook, R. A. Riggs, T. DelCurto, L. D. Bryant, and L. L. Irwin.  2004.  Effects of summer-autumn nutrition and parturition date on reproduction and survival of elk.  Wildlife monographs.  NO. 155:1-61.

Fisher, M. J., D. W. Bohnert, C. J. Ackerman, C. S. Schauer, T. DelCurto, A. M. Craig, E. S. Vanzant, D. L. Harmon, and F. N. Schrick.  2004.  Evaluation of perennial ryegrass straw as a forage source for ruminants.  J. Anim. Sci. 82:2175-2184.

Parsons, C. T.,  P. A. Momont,  T. DelCurto*, and J. L. Sharp.  2003.  Effect of Season of Use on Beef Cattle Distribution Patterns in Riparian Areas.  J. Range Manage.  56:334-341.

Stillings, A. M.,  J. A. Tanaka,  N. R. Rimbey, T. DelCurto, P. A. Momont, and M. L. Porath.  2003.  Economic implications of off-stream water developments to improve riparian grazing.  J. Range Manage.  56:418-424.

Bohnert, D. W., C. S. Schauer, M. L. Bauer, and T. DelCurto.  2002.  Influence of rumen protein degradability and supplementation frequency on steers consuming low-quality forage: I. Site of digestion and microbial efficiency.  J. Anim. Sci. 80:2967-2977.

Bohnert, D. W., C. S. Schauer, S. J. Falck, and T. DelCurto.  2002.  Influence of rumen protein degradability and supplementation frequency on steers consuming low-quality forage: II. Ruminal fermentation characteristics.  J. Anim. Sci.  80:2978-2988.

Bohnert, D. W., C. S. Schauer, T. DelCurto.  2002.  Influence of rumen protein degradability and supplementation frequency on performance and nitrogen use in ruminants consuming low-quality forage: Cow performance and efficiency of nitrogen use in wethers.  J. Anim. Sci.  80:1629-1637.

Porath, M. L., P.A. Momont, T. DelCurto*, N. R. Rimbey, J. A. Tanaka, and M. McInnis.  2002.  Offstream water and trace mineral salt as management strategies for improved cattle distribution.  J. Anim. Sci. 80:346-356.

Riggs, R. A., A. R. Tiedemann, J. G. Cook, T. M. Ballard, P. J. Edgerton, M. Vavra, W. C. Krueger, F. C. Hall, L. D. Bryant, L. L. Irwin, and T. DelCurto.  2000.  Modification of mixed conifer forests by ruminant herbivores in the Blue Mountains ecological province.  USDA Forest Service Res. Pap. PNW-RP-527.

DelCurto, T.,  K. C. Olson, B. Hess and E. Huston.  2000.  Optimal supplementation strategies for beef cattle consuming low-quality forages in the Western United States.  J. Anim. Sci. Symposium Paper Web Site .

Books and Book Chapters

DelCurto, T.  2010.  Issues in Grazing Livestock Nutrition.  In: Proc. 4th Grazing Livestock Nutrition Conference.  B. W. Hess, T. DelCurto, J.G.P. Bowman, and R. C. Waterman (Eds).West. Sect. Am. Soc. Anim. Sci., Champaign, Il pp 1-10.

DelCurto, T. and P. R. Cheeke.  2005.  Feeding and nutrition of beef cattle.  In:  P.R. Cheeke (Ed.) Applied Animal Nutrition; Feed and Feeding (3rd edition).  Prentice-Hall, Inc.  pp 373-397.

Putman, D. H., and T. DelCurto.  2005.  Forage systems for Arid Zones.  In: R. F. Barnes, C. J. Nelson, K. J. Moore, and M. Collins (Eds) Forages, Volume II.  The Science of Grassland Agriculture (6th edition).  Iowa State Press, Chapt. 22 pp 323-339.

DelCurto, T., D. Bohnert, and C. Ackerman.  2000.  Characteristics and challenges of sustainable beef production in western US.  In: Strategic Supplementation of Beef Cattle Consuming Low-Quality Roughages in the Western United States.  Oregon State Univ. Agri. Exp. Sta.  SB 683.

Other Peer-reviewed Articles and other Publications, Symposium Proceedings  (11)

Non-refereed Journal Articles or Outreach Publications, etc. (75)

Special Reports and Station Bulletins:  Publications that I served as either the editor for or provided components of topical reviews for issues important to the regional livestock industry.

EOARC Union Station.  2001.  T. DelCurto and M. Vavra (eds).  The History of the Eastern Oregon Agricultural Research Center’s Union Station:  100 Years of Service.  Oregon Agric. Exp. Sta. Spec. Rep.  (in preparation).

Western Coordinating Committee 110.  2000. T. DelCurto (ed).  Supplementation of Low-quality roughages in the Western US:  Collection of articles on research conducted in the west and specific to western production systems as prepared by WCC 110 members.  2000. Oregon Agric. Exp. Sta. Bull. (In press).

Range Field Day Report 2000.  T. DelCurto (ed).  Sustainable Livestock Production in Forested and Intermountain Rangelands.  Topical publication corresponding to the Field Day held at the OSU Hall Ranch of the EOARC Union Station.  Oregon Agric. Exp. Sta. Spec. Rep.  1018.

Abstracts and Western Section Proceedings (91)