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P. Shawrang2, 1Department of Animal Science, Faculty of Agriculture, Science and Research Branch, Islamic Azad University, Tehran, Iran, 2Animal Science Research Section, Research Center for Agriculture and Medicine, Atomic Energy Organization of Iran, Karaj, Iran.

M369

Delta 9 desaturase gene expression in muscle, adipose tissue and liver of beef heifers following supplementation of grass with a concentrate containing sunflower seed and fish oil. S. A. McGettrick*1, A. P. Maloney2, F. J. Monahan1, T. Sweeney1, and F. J. Mulligan1, Veterinary Sciences Centre, School of Agriculture, Food Science and Veterinary Medicine, University College Dublin, Belfield, Dublin 4, Ireland, 2Teagasc, Grange Research Centre, Dunsany, Co. Meath, Ireland.

1

M370

Effect of level and duration of dietary ω-3 polyunsaturated fatty acid supplementation on -9 desaturase gene expression in muscle of beef cattle. S. M. Waters1, J. P. Kelly2, P. O Boyle , A. P. Moloney3, and D. A. Kenny*2, 1Teagasc, Animal Production Research Centre, Mellows Campus, Athenry, Co. Galway, Ireland., School of Agriculture, Food Science & Veterinary Medicine, University College Dublin, Belfield, Dublin 4, Ireland, 3Teagasc, Grange Beef Research Centre, Dunsany, Co. Meath, Ireland.

1 2

M371

Body condition score and day of lactation affect lipogenic mRNA abundance and transcription factors in adipose tissue of beef cows fed supplemental fat. C. M. Murrieta*, S. L. Lake, E. J. Scholljegerdes, B. W. Hess, and D. C. Rule, University of Wyoming, Laramie.

M372

Modeling fatty acid kinetics in plasma and immune cells of neonatal calves in response to increasing levels of dietary fish oil. M. A. Ballou*, J. G. Fadel, and E. J. DePeters, University of California, Davis.

M373

Effects of soybean oil plus additional forage and anabolic implant on performance, carcass quality, and meat CLA content in finished steers. V. Poulin*1, A. Fournier2, J. Jacob3, C. Gariépy4, C. Avezard4, N. Durand4, J. Fortin4, and P. Y. Chouinard1, 1Institut des nutraceutiques et des aliments fonctionnels, Université Laval, Québec, Qc, Canada, 2MAPAQ, Nicolet, Qc, Canada, 3MAPAQ, St- Narcisse, Qc, Canada, 4CRDA, Agriculture and AgriFood Canada, St-Hyacinthe, Qc, Canada.

M374

Effects of flunixin meglumine on pyrexia, production, and bioenergetic variables in post-parturient dairy cows. G. Shwartz*1, S. R. Hartman1, J. D. Earnest1, A. L. Debold1, K. L. Hill2, M. J. VanBaale1, and L. H. Baumgard1, 1The University of Arizona, Tucson, 2Schering Plough Animal Health, Kenilworth, NJ.

SYMPOSIA AND ORAL SESSIONS

ADSA Southern Branch Graduate Student Competition Chair: Cathleen C. Williams, Louisiana State University 204 B

9:30 AM

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9:45 AM

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Effects of protein sources on growth and hormonal status of weaned dairy calves. C. A. Sissell*, C. C. Williams, C. F. Hutchison, D. T. Gantt, L. R. Gentry, A. J. Bridges, and J. E. Chandler, Louisiana State University Agricultural Center, Baton Rouge.

Impact of feed management software on whole farm nutrient balance and feeding management. B. G. Cox*, R. E. James, K. F. Knowlton, M. L. McGilliard, and C. C. Stallings, Virginia Polytechnic and State University, Blacksburg.

SYMPOSIUM Alpharma Beef Cattle Nutrition Symposium Chair: Clint Krehbiel, Oklahoma State University 217 A

9:30 AM

Introduction. C.R. Krehbiel, Oklahoma State University.

9:40 AM

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Nutrient synchrony: Sound in theory, elusive in practice. M. B. Hall*, U.S. Dairy Forage Research Center, USDA-ARS, Madison, WI.

10:15 AM

11

Nitrogen recycling and the nitrogen economy of ruminants – asynchronous symbiosis. C. K. Reynolds*1 and N. B. Kristensen2, 1The University of Reading, England, 2University of Aarhus, Denmark.

10:50 AM

Break

11:15 AM

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Opportunities to enhance performance and efficiency through nutrient synchrony in forage-fed ruminants. M. J. Hersom*, University of Florida, Gainesville.

11:50 AM

13

Opportunities to enhance performance and efficiency through nutrient synchrony in concentrate-fed ruminants. N. A. Cole*, USDA-ARS-CPRL, Bushland, TX.

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