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| Dr. Bowman (right) discussing Urea as a Supplemental Nitrogen source with students Ann Hoffman (left) and Dan Jensen (center). |
Professor, Animal Science
311 Animal Bioscience Building, MSU-Bozeman
Bozeman, MT 59717
Phone: (406) 994-5563
Fax: (406) 994-5589
Email: jbowman@montana.edu
Education
B.S. University of Missouri Animal Science, 1977
M.S. University of Missouri Animal Science, 1979
Ph.D. University of Missouri Ruminant Nutrition, 1986
Classes
ARNR 320 Animal Nutrition
ARNR 422 Topics in Beef Cattle Nutrition
ARNR 423 Equine Nutrition
ARNR 520 Nutrient Metabolism of Domestic Animals
Research Interests
- Factors affecting intake and utilization of grazed and harvested forages by beef cattle - including effects of forage species and maturity, harvesting and/or processing methods, supplementation with high fiber or by-product concentrates, and forage combinations on digestive kinetics, nutrient flow, microbial colonization and fermentation, particle size reduction, intake and animal performance.
- Nutritive value of barley varieties in diets for feedlot cattle.
- Development of nutritional programs for wintering beef cows.
Accomplishments and Interests
- Identified QTLs for ruminal digestibility and particle size on barley chromosomes 3 & 4.
- Determined heritability of digestibility in barley to be 50%.
- Demonstrated legume supplementation of low-=quality forage diets increases rate of large particle size reduction and passage from rumen, allowing increased intake by cattle.
- Demonstrated ruminal carboxymehthylcellulase activity can be used to compare relative colonization and activity by cellulolytic bacteria.
- Demonstrated differences in rate and pattern of ruminal bacterial colonization of cool-season grasses, warm-season grasses and legumes, and relationship to fiber digestion.
- Established that a barley variety with extremely rapid ruminal digestion could support superior feedlot performance, indicating rapid ruminal digestion is not strictly a negative influence on animal performance.
Recent Publications
- Blake, T., V. C. Blake, J.G.P. Bowman, and H. Abdel-Haleem. 2011. Barley feed uses and quality improvement. Page 522 in Barley: Production, Improvement, and Uses. Steven E. Ullrich, ed. Blackwell Publishing Ltd., West Sussex, UK. (Book chapter)
- Moreaux, S.J.J., J. L. Nichols, J.G.P. Bowman, and P. G. Hatfield. 2011. Psyllium lowers blood glucose and insulin concentrations in horses. J. Equine Vet. Sci. 31:160-165.
- Surber, L., H. Abdel-Haleem, J. Martin, P. Hensleigh, D. Cash, J. Bowman, and T. Blake. 2011. Mapping quantitative trait loci controlling variation in forage quality traits in barley. Mol. Breeding 28:189–200.
- Abdel-Haleem, H., J.G.P. Bowman, M. Giroux, V. Kanazin, H. Talbert, L.M.M. Surber, and T. K. Blake. 2010. Quantitative trait loci of acid detergent fiber and grain chemical composition in hulled x hull-less barley population. Euphytica 172:405-418.
- Abdel-Haleem, H., J.G.P. Bowman, V. Kanazin, L.M.M. Surber, H. Talbert, P. M. Hayes, and T. K. Blake. 2010. Quantitative trait loci of dry matter digestibility and particle size traits in two-rowed x six-rowed barley population. Euphytica 172:419-433.
- Blake, T., V.C. Blake, J.G.P. Bowman, and H. Abdel-Haleem. 2009. Barley Feed Uses and Quality Improvement. In: S. E. Ullrich, ed. Barley: Production, Improvements, and Use. Wiley-Blackwell, Ames, IA.
- Bowman, Jan, and Bok Sowell. 2009. Feeding the Beef Cow Herd. In: Richard O. Kellems and D. C. Church, eds. Livestock Feeds and Feeding. Sixth Edition. Prentice Hall, Boston. (Book chapter)
- Bhatti, S. A., J.G.P. Bowman, J. L. Firkins, A. V. Grove, and C. W. Hunt. 2008. Effect of intake level and alfalfa substitution for grass hay on ruminal kinetics of fiber digestion and particle passage in beef cattle. J. Anim. Sci. 86:134-145.
- Fox, G. P., J. Bowman, A. Kelly, A. Inkerman, D. Poulsen, and R. Henry. 2008. Assessing for genetic and environmental effects on ruminant feed quality in barley (Hordeum vulgare). Euphytica 163:249-257.
- Turuspekov, Y., B. Beecher, Y. Darlington, J. Bowman, T. K. Blake, and M. J. Giroux. 2008. Hardness locus sequence variation and endosperm texture in spring barley. Crop Sci 48:1007-1019.
- Turuspekov, Y., J. M. Martin, J.G.P. Bowman, B. S. Beecher, and M. J. Giroux. 2008. Associations between Vrs1 alleles and grain quality traits in spring barley Hordeum vulgare L. Cereal Chem. 85:817-823.
- Fox, G. P., B. Osborne, J. Bowman, A. Kelly, M. Cakir, D. Poulsen, A. Inkerman, and R. Henry. 2007. Measurement of genetic and environmental variation in barley (Hordeum vulgare) grain hardness. J. Cereal Sci. 46:82-92.
- Fox, G. P., L. Nguyen, J. Bowman, D. Poulsen, A. Inkerman, and R. J. Henry. 2007. Relationship between hardness genes and quality in barley (Hordeum vulgare). J. Instit. Brew. 113:87-95.
- Swan, C. G., J.G.P. Bowman, J. M. Martin, and M. J. Giroux. 2006. Increased puroindoline levels slow ruminal digestion of wheat (Triticum aestivum L.) starch by cattle. J. Anim Sci. 84:641-650.
