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Effect of soaking dairy cows at the feed line on animal body temperature in a tunnel ventilated barn equipped with evaporative pads located in a tropical climate, Thailand. D. V. Armstrong*1, M. J. VanBaale1, S. Rungruang2, V. Wuthironarith2, M. J. Brouk3, and J. F. Smith3, 1The University of Arizona, Tucson, 2Charoen Pokphand Group Co., Ltd., Bangkok, Thailand, 3Kansas State University, Manhattan.

W240

Effect of soaking dairy cows at the feed line on animal behavior in a tunnel ventilated barn equipped with evaporative pads located in a tropical climate, Thailand. D. V. Armstrong*1, M. J. VanBaale1, S. Rungruang2, V. Wuthironarith2, M. J. Brouk3, and J. F. Smith3, 1The University of Arizona, Tucson, 2Charoen Pokphand Group Co., Ltd., Bangkok, Thailand, 3Kansas State University, Manhattan.

W241

Thermal status for different breeds of dairy cattle exposed to summer heat stress in a grazing environment. J. N. Spain*1, L. Parsons1, R. Crawford2, C. Brown2, and D. E. Spiers1, 1University of Missouri, Columbia, 2Soutwest Research Center, Mt. Vernon, MO.

W242

Labor, housing, feeding, and bedding affects on herd turnover rate and mortality rates of Southeastern Pennsylvania dairy herds. C. D. Dechow1 and R. C. Goodling*2, 1The Pennsylania State University, University Park, 2Pennsylvania State Cooperative Extension, University Park, PA.

W243

Body weight and condition score of four dairy genetic groups in summer or winter under low-input management. D. G. Johnson*1, B. J. Heins2, L. B. Hansen2, A. J. Seykora2, and J. G. Linn2, 1University of Minnesota, Morris, 2University of Minnesota, St. Paul.

W244

Phosphorus removal capacity of forages used on South Florida dairies. Y. C. Newman*, J. M. Scholberg, M. B. Adjei, and L. E. Sollenberger, University of Florida, Gainesville.

W245

Efficiency of use of imported magnesium, sulfur, copper, and zinc in Idaho dairy farms. A. N. Hristov*, W. Hazen, and J. W. Ellsworth, University of Idaho, Moscow.

W246

Reproductive status of dairy herds in Alberta: An objective assessment based on milk progesterone (P4) concentrations. D. J. Ambrose*1, M. G. Colazo1, and J. P. Kastelic2, 1Alberta Agriculture and Food, Edmonton, AB, Canada, 2Agriculture and Agri-Food Canada, Lethbridge, AB, Canada.

W247

Incidence and interrelation of some common hoof problems in a Southeast US dairy herd. A. H. Sanders*1, J. K. Shearer1, L. C. Shearer1, S. R. van Amstel2, D. W. Webb1, and A. De Vries1, 1University of Florida, Gainesville, 2University of Tennessee, Knoxville.

W248

Economic analysis of bovine somatotropin to increase pregnancy rates in lactating dairy cows. A. A. Bell*, P. J. Hansen, and A. De Vries, University of Florida, Gainesville.

W249

Performance of beef calves weaned by traditional, fenceline, and two-step methods. D. D. Buskirk, J. M. Siegford, and B. A. Wenner*, Michigan State University, East Lansing.

W250

A comparison of visual and palpation-based body condition scoring systems. J. M. Bewley*1, R. E. Boyce2, D. J. Roberts3, M. P. Coffey3, A. Bagnall3, and M. M. Schutz1, 1Purdue University, West Lafayette, IN, 2IceRobotics Ltd., Roslin, Scotland, UK, 33Scottish Agricultural College Dairy Research Centre, Dumfries, Scotland, UK.

W251

Effect of discontinuous roughage delivery in a feedlot diet on liveweight gain and feed efficiency of beef steers. M. Avila3, J. I. Arroquy*1,2, and J. J. Saravia1, 1INTA Santiago del Estero, Santiago del Estero, Argentina, 2Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina, 3Universidad Nacional de Santiago del Estero, Santiago del Estero, Argentina.

W252

Simulation model of fat deposition and distribution in beef steers: 1. Empirical models converting fat thickness to subcutaneous fat and KPH to visceral fat. M. J. McPhee*1,2, J. W. Oltjen1, J. G. Fadel1, D. Perry2, and R. D. Sainz1, 1University of California, Davis, 2NSW DPI, Armidale, Australia.

W253

Simulation model of fat deposition and distribution in beef steers: 2. Empirical models to initialize fat deposition models. M. J. McPhee*1,2, J. W. Oltjen1, J. G. Fadel1, and R. D. Sainz1, 1University of California, Davis, 2NSW DPI, Armidale, Australia.

W254

Pasturing to decrease greenhouse gas emissions from feedlot cattle operations: A whole system approach. H. Koknaroglu1, T. Akunal1, T.

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W235

Transcript profiling in mammary of ovariectomized pregnant gilts receiving progesterone and relaxin replacement therapy in late gestation. D. E. Graugnard*, J. J. Loor, E. A. Cutler, R. E. Everts, S. L. Rodriguez-Zas, and W. L. Hurley, University of Illinois, Urbana.

W236

Effect of boron supplementation on semen quality in mature boars. W. L. Flowers*1, J. W. Spears1, and F. H. Nielsen2, 1North Carolina State University, Raleigh, 2USDA-ARS, Grand Forks Human Nutrition Center, Grand Forks, ND.

W237

Transient transgene transmission to piglets by sperm-mediated gene transfer. Z. Wu1, Z. Li1,2, and J. Yang*2, 1South China Agricultural University, Guangzhou, Guangdong, China, 2University of Hawaii, Honolulu.

W238

Computer-assisted analysis of sperm parameters after selection of motile sperm by either percoll gradient, filtration or swim-up procedures. C. N. Person*, T. D. Lester, M. D. Person, and R. W. Rorie, University of Arkansas, Fayetteville.

Production, Management & the Environment - Livestock and Poultry III Exhibit Hall C

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