Scientific Abstracts

Troy Downing, OSU Extension Dairy faculty (503) 842-5708 x 211

 

Contact Troy Downing for information on the research listed below 

1.   Downing, T. 2008.  Developing an air emissions extension program for the Oregon dairy industry.  Western Region Extension Professional Development Conference, Redmond, OR.

2.   Downing, T. 2008.  Selecting for improved energy content in grasses.  International Livestock and Dairy Exposition.  New Delhi, India.

3.   Downing, T. 2007.  International dairy extension in Siberia.  Western Region Extension Professional Development Conference, Tucson, AZ. Pg 7. 

4.   Downing, T. and J. Hart.  2007.  The economics of liming coastal dairy pastures.  American Dairy Science Annual Meeting.  J Dairy Sci. Vol. 90 Suppli. 1 pg 36.

5.   Downing, T. 2006.  Relationship between size of vegetated buffers and transport of fecal coliform bacteria. Western Region Extension Professional Development Conference, Boise, ID.  Pg 37. 

6.   Downing, T.,   P. French, and B. Frisch. 2006.  Neutral detergent fiber digestibility in cool season grasses. Western Region Extension Professional Development Conference, Boise, ID.   Pg 22.

7.   Downing, T.,   P. French, and B. Frisch. 2006.  Fiber digestibility in cool season grasses. Oregon State University Extension Annual Conference, Corvallis, OR.

8.   Downing, T., A. Buyserie, P. French and M. Gamroth. 2006.  Effect of non-structural carbohydrates on ensiling characteristics of perennial grasses.  American Forage and Grasslands Council proceedings, pg 29.

9.   Sullivan, T.J., J. A. Moore, T.W. Downing, D. Thomas, E. Mallory, K.U. Snyder, M. Wustenberg, S. Mackey. 2006.  Relationship between Size of Vegetated buffers and transport of fecal coliform bacteria from pasturelands treated with dairy cow manure.  American Dairy Science Annual Meeting.  J Dairy Sci.  Vol. 89, Suppl. 1: 298.

10.  French, P., T. W. Downing, B. D. Frisch, J. L. Chamberlain, and J. L. Warntjes.  2006.  Neutral detergent fiber digestibility of cool-season grasses. American Dairy Science Annual Meeting.  J Dairy Sci. Vol. 89 Suppl. 1: M53.

11.  Frisch, B P. French, and T. Downing. 2006.  Fiber digestibility in cool season grasses.  Tri-State Dairy Conference, Portland, OR. 

12.  VanWieringen, L,  J.H. Harrison, R. L. Kincaid, A. Hristov, R. Sheffield, M. Gamroth, P. French, T. Downing,  and A. L. Sutton. 2005. Development of an on-farm feed management assessment tool for use with dairy comprehensive nutrient management plans. American Dairy Science Annual Meeting.  J Dairy Sci. 88 Suppli 1: 328.
 
13.  Harrison, J. H., L. Van Wieringen, R. Kincaid, A. Histov, R. Sheffield, M. Gamroth and T. Downing.  2004. Western Integrated Nutrition and Nutrient Management Education (WIN2ME) for the nutrition and nutrient management professional. American Dairy Science Annual Meeting .  J Dairy Sci. 87  Suppl. 1: 247. 

14.  Buyserie, A.C., T. W. Downing and P.D. French. 2004. Effect of nonstructural carbohydrates on ensiling characteristics of perennial ryegrass.  Proceedings of the Thirty-ninth Annual Pacific Northwest Animal Nutrition Conference. p. 148. 

15.  Buyserie, A., P. French, and T. Downing. 2004. Effect of grass nonstructural carbohydrates on milk yield and composition and dry matter intake of dairy cattle. American Dairy Science Annual Meeting .  J. Dairy Sci. 87 Suppl. 1:37.  

16.  Downing, T. 2004. Phosphorus education for Oregon's dairy industry.  Western Region Extension Professional Development Conference.  Woodland, CA. pg. 40.

17.  Buyserie, A., T. Downing, P. French and M. Gamroth.  2004.  Effect of grass forage nonstructural carbohydrates on dry matter intake, milk yield and composition of dairy cattle.  American Forages and Grasslands Council Proceedings, Vol 13, pg 327. 

18.  Downing, T., A. Buyserie, P. French, and M. Gamroth. 2004.  Nonstructural carbohydrates in cool season grasses.  American Forages and Grasslands Council Proceedings, Vol. 13, pg 90.

19.  Downing, T. 2003.  Non-structural carbohydrates in cool season grasses. Pacific Northwest Animal Nutrition Conference Proceedings. Pgs 169-177.

20.  Downing, T.,  B. Lambert and M. Gamroth.  2003.  Impact of manure application timing in dairy pastures on the migration of nitrates to groundwater.  American Dairy Science Annual Meeting .  J. Dairy Sci. Vol. 86, Suppl., 1 pg 282. 

21.  Downing, T. A. Buyserie and M. Gamroth. 2003.  The relationship between nonstructural carbohydrates and total dry matter yield in cool season grasses. American Dairy Science Annual Meeting.  J. Dairy Sci. Vol. 86, Suppl., 1 pg. 286. 

22.  French, M.E., T.W. Downing, and P.D. French.  2003.  Oregon dairy environmental stewardship program.  American Dairy Science Annual Meeting.  J. Dairy Sci. Vol. 86, Suppl., 1 pg 357.

23.  Downing, T. 2003.  Nonstructural carbohydrates in cool season grasses.  Western Region NACAA professional improvement conference proceedings.  Las Vegas, NV. pg. 23. 

24.  Downing, T. 2002. Nutrient management plans for pasture-based dairies.  Western Region NACAA professional improvement conference proceedings.  Las Vegas, NV. pg 13.

25.  Downing, T. and T. Leonnig.  2002. Nutrient cycling in cool season grasses.  American Dairy Science Annual Meeting.  J. Dairy Sci. Vol. 85, Suppl. 1, abstract 1333.

26.  Downing, T. and T. Leonnig. 2002.  Use of animal waste management plans on pastured based dairies to increase productivity and reduce environmental impacts. American Dairy Science Annual Meeting .  J. Dairy Sci. Vol. 85, Suppl. 1, abstract 490.

27.  Downing, T. and J. Hart.  2001.  Phosphorus adsorption implications on phosphorus management on dairies.  American Dairy Science Annual Meeting .  J. Dairy Sci. Vol. 84, Suppl. 1, abstract 1304.

28.  Rudell, A., J. Hart, M. Bohle, J. Carr. T. Downing, S. Filley, G. Pirelli and M. Porath.  2001.  Using air temperature to time nitrogen application for increased early forage production.  Soc. Range Management 54th Annual meeting, Kailua-Kona, HI.

29.  Downing, T.W  and T.T. Leonnig. 2000.  Utilizing dairy manure agronomically on pastures.  Agriculture and Water Quality in the Pacific Northwest Conference.  Conference proceedings, pg. 76.

30.  Bohle, M., J. Carr, T. Downing, S. Filley, J. Hart, G. Pirelli, M. Porath and A. Ruddell.  2000.  Protecting groundwater while optimizing N applications for pasture forage production in Oregon.  Agriculture and Water Quality in the Pacific Northwest Conference.  Conference proceedings, pg 42.

31.  Downing, T.W.  2000.  Nitrogen cycling on pasture based dairies. American Dairy Science Annual Meeting.  J. Dairy Sci. Vol 83, Suppl. 1, abstract 450.

32.  Downing, T. W. and M. Gamroth. 1999. Extension and industry team up to tackle waste management issues on dairies.  Oregon State University Extension Annual Conference Poster Session.
 
33.  Dodson, R.E., S.A. Ericsson, K.L. Sternes, T.W. Downing, and P.H. Purdy.  1999. Use of reducible dyes resazurin, 2', 6' -dichloroindophenol and methylene green to estimate rumen microbe numbers.  J Animal Science, Vol 77, Supplement 1, abstract 567.

34.  Downing, T.W. and T.T. Leonnig. 1999.  Animal waste management plans in dairies: An industry approach.  J Dairy Science Vol 82, supplement 1, abstract P102.

35.  Downing, T.W., D.L. Garner, S.A. Ericsson and D. Redelman.  Alteration of sperm metabolism by fluorescent viability stains.  XIV International Meeting of the Society for Analytical Cytology, 1991.  Cytometry Supplement 4, abstract 276.

36.  Garner, D.L., S.A. Ericsson, T.W. Downing and B.R. Behr. 1991. Functional assessment of cryopreserved human spermatozoa using flow cytometric and computer-assisted motility analyses.  American Society of Cell Biology.

37.  Downing, T.W., S.A. Ericsson, D.L. Garner. 1990. Effects of added cytoplasmic droplets on bovine metabolism.  American Society of Andrology Annual Meeting 1990.  Andrology Supplement 122.

38.  Sternes, K.L., S.A. Ericsson, T.W. Downing and D.L. Garner. 1990. Relative mitochondrial DNA content and weight per day of age in beef heifers.  West Sec Am Soc Anim Sci 1990 Meeting, J Anim Sci 68, supplement 1, abstract 81.

39.  Ericsson, S.A., D.L. Garner, R.Y. Kramer, T.W. Downing and D. Redelman. 1990. Modified Tri-Functional fluorescent staining of cryopreserved bovine sperm.  XIV International Meeting of the Society for Analytical Cytology. Cytometry Supplement 4, Abstract 275.

40.  Ericsson, S.A., D.L. Garner, T.W. Downing and D. Redelman. 1990. Tri-Functional fluorescent staining of fertility tested bovine spermatozoa.  American Society of Andrology Annual Meeting, 1990.  Andrology Supplement, Abstract 123.

41.  Kramer, R.Y., D.L. Garner, S.A. Ericsson, D. Redelman and T.W. Downing.  The effect of dietary cottonseed on testicular development in pubertal rams.  Proc West Sec Am Soc Anim Sci 40:309-312, 1989.
Share this