2007 Proceedings
Front Cover
Organizing Committee
Table of Contents
Committee Assignments 2006-2007
Minutes of the 2006 Western Section Business Meeting
Awards Donors
Author Index
A Meta-Analysis Evaluation of Feeding MGA® to Feedlot Heifers Implanted with TBA
- J. J. Wagner and N. E. Davis...3
Reproductive Performance in Early Postpartum Rambouillet Ewes and Prepubertal Ewe Lambs Treated with Intravaginal Progesterone
- J. M. Benavidez, M. J. Hendricks, R. L. Knight, L. D. Abercrombie, and D. M. Hallford...7
Heterogeneous Variance of Docility Score in Limousin Cattle
- D. W. Beckman and D. J. Garrick...11
Effects of Melengestrol Acetate and PG600 on Fertility in Rambouillet Ewes Outside the Normal Breeding Season
- E. Windorski, C. S. Schauer, D. B. Pearson, A. K. Wurst, E. K. Inskeep, and J. S. Luther...15
Effects of Bunk Scoring on Feedlot Steer Intake
- J. S. Schutz, J. J. Wagner, and T. E. Engle...19
Receptor Transporting Protein-4 (RTP4) Expression and Localization in the ovary and Endometrium of Cyclic and Early Pregnant Ewes
- C. A. Gifford, A. M. Assiri, M. C. Satterfield, T. E. Spencer, and T. L. Ott...23
Stayability to Alternate Ages
- B. W. Brigham, S. E. Speidel, R. M. Enns, and D. J. Garrick...27
Duodenal Flow and Intestinal Disappearance of Fatty Acids in Lambs Fed Safflower Fatty Acids in the Form of Whole Seeds, Cracked Seeds, or Oil Extracted from Seeds
- P. L. Price, V. Nayigihugu, C. M. Murrieta, D. C. Rule, and B. W. Hess...31
The Corticotrophin Releasing Hormone as a Strong Candidate Gene for Marbling and Subcutaneous Fat Depth in Beef Cattle
- T. A. Wibowo, J. J Michal, and Z. Jiang...35
Genetic Parameter Estimates for Ultrasound Indicators of Carcass
- S. E. Speidel, R. M. Enns, B. W. Brigham, and L. D. Keenan...39
Nitric Oxide and Polyamine Response to Prostaglandin F2a in the Early and Mid Stage Ovine Corpus Luteum
- B. R. Schilling, K. K. Kane, L. M. Dixon, R. D. Speckmann, D. E. Hawkins...43
Expression and Distribution of Urea Transporter-B in Lambs Fed Increasing Dietary Protein
- R. M. Stohrer, K. J. Austin, R. L. Atkinson, E. L. Belden, and P. A. Ludden...47
Effect of Duration of CIDR Treatment on Conception and Pregnancy Rates in Beef Heifers Using a Timed-AI Protocol
- D. Gunn, B. Glaze, A. Ahmadzadeh, D. Falk, and R. Findlay...51
Selection Intensities, Generation Intervals and Population Structure of Red Angus Cattle
- G. C. Márquez and D. J. Garrick...55
The Ability of a Yeast-Derived Cell Wall Preparation to Minimize Toxic Effects of High-Alkaloid Tall Fescue Straw in Beef Cattle
- M. L. Merrill, D. W. Bohnert, D. L. Harmon, A. M. Craig, and F. N. Schrick...59
Effects of Mild Stress on Ewe Maternal Behavior
- G. Leedy and B. Alexander...67
Effects of Progesterone on Ram Reproductive Behavior
- K. J. Austin, J. T. Raines, B. M. Alexander...71
Estimation of Heterotic Effects on Heifer Pregnance in Beef Cattle
- C. M. McAllister, D. D. Kress, K. C. Davis, D. C. Anderson, R. M.Enns, D. L. Boss, and J. M. Rumph...77
Genetic Analysis of Rebreeding to Produce a Calf at Three Years of Age in the Montana Line 4 Hereford Herd
- J. M. Rumph, D. D. Kress, K. C. Davis, D. C. Anderson, and D. L. Boss...81
Retrospective Analyis of Selection Applied to a Ratio
- M. D. MacNeil...85
Iterative Solution of Linear Equations from National Beef Cattle Evaluation
- D. J. Garrick, B. W. Brigham, S. E. Speidel...89
Urotensin 2 and its Receptor as Candidate Genes for Beef Marbling Score and Subcutaneous Fat Depth
- D. J. Tobey, T. F. Daniels, J. J. Michal and Z. Jiang...93
Ultrasound Estimates of Loin Muscle Measures and Backfat Thickness Augment Live Animal Prediction of Weights of Subprimal Cuts in Sheep
- T. D. Leeds, M. R. Mousel, D. R. Notter, and G. S. Lewis...97
Factors Determining Prices of Yearling Angus Bulls
- K. L. Shirley and D. J. Garrick...101
Characterization of Brahman, Brangus, Charolais, Gelbvieh and Simmental for Growth Traits in Baja California, Mexico
- A. P. Márquez, V. Armendáriz, M. Montano, J. S. Saucedo, and J. N. Guerrero...105
Effect of Ram Breed on Pre-Weaning Growth Performance of Crossbred Lambs
- S. P. Doyle, C. R. Johnson, G. A. Darling and W. R. Patton...108
Effect of Ram Breed and Finishing Diet on Carcass Traits of Crossbred Wether Lambs
- S. P. Doyle, C. R. Johnson, J. W. Holt and W. R. Patton...110
Estimates of Genetic Parameters for Weight in the Progeny of Nubian, French Alpine, Saanen, Toggenburgh, and Spanish Goats Mated to Boer Sires
- A. P. Marquez, J. S. Saucedo, M. Montaño, and J. N. Guerrero...113
Prevalence of Salmonella and E. Coli 0157:H7 in Large Herd Dairies in Southwestern United States and Northern Mexico
- C. H. Martinez, T. S. Edrington, J. D. Thomas, T. T. Ross, S. Soto-Navarro, R. R. Redden, B. J. Herron, and D. T. Yates...119
Low-Input Pasture Backgrounding System is More Profitable Through Harvest than High-Input Drylot System
- C. P. Mathis, S. H. Cox, M. K. Petersen, C. A. Löest, R. L. Endecott, and M. Encinias...122
Relationship of Dam's Body Weight, Milk Components, and Milk Energy Density to Reindeer Calf Growth Rate
- M. P. Shipka, J. E. Rowell, and A. J. Young...126
Impact of Equine Anthelmintics on Dung Beetle Reproduction
- T. Black, E. T. Lewis, J. L. Beckett, and B. C. Clymer...131
Beef Cow Performance in Response to Early Through Mid-Gestational Nutrient Restriction and Provision of Supplementary Ruminally Undegradable Protein
- P. L. Price, M. Du, S. I. Paisley, V. Nayigihugu, J. D. Hess, and B. W. Hess...134
Effect of Copper Supplementation on Artificial Insemination Conception Rate of Angus Cows and Feedlot Performance of Angus Bulls
- N. A. Dunbar, B. J. May, M. W. Salisbury, C. B. Scott, and M. T. Schafer...139
The Effect of Protein Level on Feedlot Performance and Carcass Characteristics of Texas Rambouillet Ewes
- Norberto Mendoza Jr., Brian J. May, Michael W. Salisbury, and Gil R. Engdahl...144
Use of N-Alkanes to Estimate Seasonal Intake, Digestibility, and Diet Composition of Small Ruminants Grazing in California Chaparral
- N. Narvaez and W. Pittroff...149
Effect of Cobalt Supplementation and Estrous Syncronzation on Body Weight Gain and Conception Rates in Yearling Ewes and Peripubertal Ewe lambs
- G. E. Moss, K. M. Cammack, B. A. Larson, B. M. Alexander, R. H. Stobart, W. J. Hill, and B. W. Hess...153
Effect of Field PEA and Flaxseed Inclusion in Receiving Calf Diets and Carryover Effect on Finishing Performance, Immune Response, Carcass Quality, and Economics
- D. G. Landblom, D. K. Olson, and C. J. Wachenheim...156
Readability of Thirteen Different RFID Ear Tags by Three Different Multi-Panel Reader Systems for Use in Beef Cattle
- L. E. Wallace, J. A. Paterson, A. Ankney, R. Clark, M. Harbac, A. Kellom, M. Miller...160
The Extension Service and the Beef Industry: Yesterday vs. Today
- J. A. Paterson...167
Assessing the Industry's Needs: A Production Practices Survey of Cow-Calf Producers in Northeastern Oregon
- C. Parsons...172
The Future of Information Dissemination to the Beef Cattle Industry
- T. G. Field, R. P. Lemenager, B. Long, H. Suttee, and H. Gardiner...176
Teaching Cattle Producers to Manage Risk - The Beehive Master Beef Manager Program
- C. K. Chapman, D. R. ZoBell, E. B. Godfrey, D. Feuz, C. V. Bagley, R. E. Banner, T. D. Cooper, D. Rothlisberger, R. M. Nelson, and L. Greenhalgh...183
Effects of Season, Management, and Diet on Prevalence of Shiga Toxin-Producing Escherichia Coli in Dairy Cattle
- L. M. Bollinger, H. S. Hussein, and E. R. Atwill...189
Relationship Between Residual Feed Intake and Meat Quality in Steer Progeny of Divergent Intramuscular Fat EPD Angus Bulls
- J. K. Ahola, L. T. Campbell, J. I. Szasz, T. A. Skow, C. W. Hunt, J. B. Glaze, Jr., and R. A. Hill...195
Serum Thyroxine, Triiodothyronine and IGF-1 Correlate with Postweaning Growth and Carcass Traits in Lambs
- C. A. Ayala, J. C. Estrada, G. A. Lara, F. A. Rodriguez-Almeida, J. A. Ramirez-Godinez, D. M. Hallford...200
Feeding Barley Beta-Glucan Enhances Immune Response in Mice
- A. V. Grove, C. R. Kaiser, J. A. Wiley, A. G. Harmsen, and J. G.P. Bowman...207
Commercial Phytases (Aspergillus níger) in Broiler Diets
- Godoy S, C. F. Chicco, G. Hernádez and P. Pizzani...211
Protein Supplementation of Ruminants Consuming Low-Quality Cool- or Warm-Season Forage: Differences in Intake and Digestibility
- D. W. Bohnert, T. DelCurto, A. A. Clark, M. L. Merrill, S. J. Falck, and D. L. Harmon...217
Sheep Grazing Wheat Summer Fallow and the Impact on Soil Nitrogen, Moisture, and Crop Yield
- E. E. Snyder, H. B. Goosey, P. G. Hatfield, and A. W. Lenssen...221
Visual Obstruction: Weight Technique for Estimating Production on Northwestern Bunchgrass Prairie Rangelands
- D. Damiran, T. DelCurto, E. Darambazar, A. A. Clark, P. L. Kennedy, and R. V. Taylor...225
Respiratory Elimination of Selenium in Sheep Given the Accumulator Plant Symphyotrichum Spathulatum (Western Mountain Aster)
- A. Wilhelm, B. L. Stegelmeier, K. E. Panter, and J. O. Hall...229
Species Composition and Diversity on Northwestern Bunchgrass Prairie Rangelands
- E. Darambazar, T. DelCurto, D. Damiran, A. A. Clark, and R. V. Taylor...233
Utilization of Corn Gluten Meal by Heifers as a Self-fed Supplement
- J. T. Mulliniks, S. H. Cox, J. E. Sawyer, Randy Worley, and M. K. Petersen...237
Effects of Tallow Supplementation to Steers Grazing Wheat Pastures on Grazing and Feedlot Finishing Performance
- A. Islas, T. Edwards, and S. A. Soto-Navarro...240
Interaction of Forage Type and Level on Conditioning of Heifer Calves for Exportation
- G. Villalobos, F. Castillo, D. Domínguez, J. A. Ortega, and L. Carlos...245
Effects of Supplemental Ground Flaxseed on the Growth Performance of Steers Grazing Summer Native Pasture in the Northern Great Plains
- E. Scholljegerdes and S. Kronberg...248
Reproductive Performance of Heifers Offered Ad Libitum or Restricted Access to Feed for a 140-D Period after Weaning
- A. J. Roberts, E. E. Grings, M. D. MacNeil, R. C. Waterman, L. Alexander, and T. W. Geary...255
Growth and Attainment of Puberty in Heifers from Cows Supplemented with Linseed Meal During Early Lactation
- B. R. Ilse, J. D. Kirsch, S. Paasch, K. G. Odde, R. N. Funston, G. P. Lardy, and K. A. Vonnahme...259
Concentrations of Glucose, NEFA, Thyroxine, and Triiodothyronine in Primiparous, Anestroud, Suckled Beef Cows Exposed to Bulls
- J. R. C. Wilkinson, S. A. Tauck, J. R. Olsen, and J. G. Berardinelli...262
Cortisol Concentration Patterns During Acclimatization to Facilities and Protocols Necessary for Intensive Blood Sampling in Primiparous, Postpartum, Suckled Beef Cows
- J. R. Olsen, S. A. Tauck, J. R. C. Wilkinson, and J. G. Berardinelli...266
Comparison of using 7- or 14-d CIDR Treatments in an Estrous Synchronization Protocol that Included PGF2α, Timed AI and GnRH in primiparous, suckled beef cows
- S. A. Tauck, J. R. C. Wilkinson, J. R. Olsen, and J. G. Berardinelli...271
Effects of Fetal and Uterine Genotype on Placentome Morphology in Sheep
- W. J. Arndt, P. P. Borowicz, A. T. Grazul-Bilska, D. A. Redmer, J. S. Caton, L. P. Reynolds, and K. A. Vonnahme...274
Effects of Maternal Dietary Restriction and Selenium Intake on Placentome Development and Proliferation in the Ewe
- L. A. Lekatz, J. S. Caton, D. A. Redmer, L. P. Reynolds, J. B. Taylor, and K. A. Vonnahme...278
Study of the Protascc® Milk Test to Estimate Somatic Cell Count (SCC) and Detect Subclinical Mastitis in Sheep
- E. Kretschmer, D. Holcombe, E. Huether, D. Redelman, and G. Fernandez...284
Effects of Supplementation of Tasxo-Ex on Infertility in Young Male Goats Experienceing Heat-Stress
- D. T. Yates, M. W. Salisbury, and H. Anderson...288
Lifespan of Sprague Dawley Rays Immunized with an LHRH Fusion Protein
- A. D. Mitzel, J. A. Hernandez, N. S. Cummings, V. A. Conforti, D. M. de Avila, M. A. Evans, and J. J. Reeves...292
Biopryn, A Blood-Based Pregnancy Test for Managing Breeding and Pregnancy in Cattle
- J. Howard, G. Gabor, T. Gray, C. Passavant, A. Ahmadzadeh, N. Sasser, D. Pals, and G. Sasser...295
Effects of Overnutrition and Undernutrition on Serum Metabolic Hormones and Estradiol-17â Concentration in Sheep
- A. T. Grazul-Bilska, J. S. Caton, E. Borowczyk, W. Arndt, J. J. Bilski, R. M. Weigl, J. D. Kirsch, D. A. Redmer, L. P. Reynolds, and K. A. Vonnahme...299
Superovulation in Sheep: Number and Weight of the Corpora Lutea and Serum Progesterone
- E. J. Windorski, D. A. Redmer, J. S. Luther, J. J. Bilski, J. D. Kirsch, K. C. Kraft, E. Borowczyk, K. A. Vonnahme, L. P. Reynolds, and A. T. Grazul-Bilska...304
Effect of Feed Peas on Ruminal Fermentation, Digestibility, and Nitrogen Losses in Dairy Cows
- M. Vander Pol, A. N. Hristov, S. Zaman, C. Schneider, N. Delano...311
Influence of Slice Baling Alfalfa Hay on Digestive Function of Steers Consuming a Feedlot Finishing Diet
- F. Loya-Olguin, A. M. Encinias, D. A. Walker, N. A. Elam, L. Avendaño-Reyes, and S. A. Soto-Navarro...315
Long-Chain Fatty Acid Flow to the Duodenum of Cattle Fed Limited Amounts of Forage Plus Supplementary Ruminally Undegradable Protein Containing Fishmeal
- B. W. Hess, E. J. Scholljegerdes, C. M. Murrieta, and D. C. Rule...320
In Vitro Ruminal Protein Degradability of Barley Varieties
- A. N. Hristov, G. A. Broderick, C. W. Hunt, T. Fife, and W. J. Price...325
Identification of Quality Characteristics of Feed Barley and Relating those Characteristics to Digestibility in Feedlot Steers
- T. E. Fife, J. I. Szasz, C. W. Hunt, and A. N. Hristov...329
Characterization of Forage Trace Mineral Concentration by Season in Diets of Beef Cows Grazing Native Range in Eastern Colorado
- J. K. Ahola, J. C. Whittier, W. S. Mackay, P. A.G. A. Sampaio, and T. E. Engle...335
Influence of Supplemental Whole Flaxseed Level on Forage Intake and Site and Extent of Digestion in Beef Heifers Consuming Native Grass Hay
- E. Scholljegerdes and S. Kronberg...339
Backgrounding Calves with Annual Forage Crops
- A. L. Todd, L. M. M. Surber, S. D. Cash, M. M. Stamm, C. S. Shauer, and M. M. Thompson...344
Effects of Bacterial Endotoxin and Dietary Protein on Serum Hormones and Plasma Amino Acids in Growing Steers
- J. W. Waggoner, C. A. Löest, J. L. Turner, C. P. Mathis, K. K. Kane, L. Chen, D. M. Hallford, and M. K. Petersen...348
Impact of Supplemental Glucogenic Precursors and Cow Age on Postpartum Range Cow Performance
- R. L. Endecott, S. H. Cox, and M. K. Petersen...352
Investigation of the Bioavailability of Manganese from Organic vs. Inorganic Supplements
- J. Hall, H. Winger, P. Hole, and R. Samford...358
Intake and Digestibility of Beta-Glucan from 'Valier' Barley in Young Calves
- A. V. Grove, C. R. Kaiser, N. Iversen, and J. G.P. Bowman...364
Effects of Ruminal Protein Degradability and Supplementation Frequency on Expression and Distribution of Urea Transporter-B in Lambs Fed Low-Quality Forage
- R. M. Stohrer, K. J. Austin, R. L. Atkinson, E. L. Belden, and P. A. Ludden...368
Feeding Value of Corn and 'Valier' Barley for Finishing Steers
- N. L. Iversen, A. V. Grove, J. G.P. Bowman, D. Boss, and T. K. Blake...372
Use of Methylglyoxal as a Tool in Predicting Ruminal Nitrogen Status
- M. B. Horvath, S. H. Cox, M. K. Petersen, and S. L. Lodge-Ivey...375
In Situ Rates of Insoluble Macro-Mineral Release from Alfalfa and Tropical Grasses, and Relationships with Dry Matter Disappearance
- K. Buck, J. R. Carpenter, M. S. Thorne, and B. W. Mathews...378
The Effects of Safflower and Vitamin E on the Feedlot Performance of Rams Divergently Selected for Lambing Rate
- A. L. Kelley, K. C. Davis, P. G. Hatfield, R. W. Kott, J. M. Dafoe, and J. M. Rumph...383
Effect of Feeding Frequency on Feedlot Steer Performance
- J. S. Schutz, J. J. Wagner, T. E. Engle, E. D. Sharman, and N. E. Davis...387
Effect of Water Quality on Holstein Calf Performance
- D. Domínguez, J. Ventura, G. Villalobos, J. Jaimes, J. A. Ortega, L. Carlos...391
Effects of Conjugated Tannins on Forage Ensiling and In Vitro Ruminal Fermentation
- R. A. Halalsheh, H. M. Sullivan, T. T. Ross, and M. K. Petersen...394
