2006 Proceedings
Front Cover
Organizing Committee
Table of Contents
WSASAS Committee Assignments 2005-2006...x
Minutes of the Western Section of the American Society of Animal Science Business Meeting...xi
2005 Distinguished Service Award Paper
Strategic Low Cost Supplementation
- M. K. Petersen...3
Graduate Student Paper Competition
Effects of Supplemental RDP Versus Increasing Supplemental RUP on Visceral N Flux in Lambs Fed a Low-Quality Forage
- R. L. Atkinson, C. D. Toone, D. L. Harmon, P. A. Ludden...9
Body Condition Score at Parturition and Day of Lactation Affect on Lipogenic Enzyme Messenger RNA Abundance in Milk Somatic Cells in Lactating Beef Cows Fed Supplemental Fat
- C. M. Murrieta, S. L. Lake, E. J. Scholljegerdes, B. W. Hess, D. C. Rule...13
Body Condition and Somatotropin Influence Endocrine and Follicular Dynamics of Postpartum Brahman-Influenced Cows
- R. FLores, M. L. Looper, R. W. Rorie, M. A. Lamb, S. T. Reifer, D. M. Hallford, D. L. Kreider, C. F. Rosenkrans Jr....17
AP-2γ Is Necessary for Normal Embryonic Epithelial Development
- J. Guttormsen, H. Gavin, A. Howlett, M. Koster, D. Roop, Q. Winger...21
Growing Beef Steers Do Not Require Supplemental Dietary Methionine During an Endotoxin Challenge
- J.W. Waggoner, C. A. Löest, T.M. Thelen, M.K. Petersen, D.M. Hallford, M.D. Remmenga, C.P. Mathis...25
Inheritance of Hair Slickness Score and Its Correlation With Growth
- J. L. Williams, D. J. Garrick, R. M. Enns, K. L. Shirley ...29
Effects of hCG and Progesterone Administered to Ewes Post Breeding on Serum Concentrations of Progesterone and Estradiol
- R. R. Redden, B. J. Herron, C. H. Martinez, T. T. Ross...32
Effects of Leafy Spurge (Euphorbia Esula) on Ruminant Gas Production and In Vitro Digestion
- K. D. Richardson, W. L. Kelly, M. S. Reil, R. C. Waterman, S. L. Lodge-Ivey...36
Effects of Ractopamine in Combination with Various Hormone Implant Regimens on Growth and Carcass Attributes in Calf - Fed Holstein Steers
- P. D. Bass, J. L. Beckett, R. J. Delmore Jr....40
Genetic Parameters for Mature Weight and Lifetime Litter Weight Weaned in Rambouillet and Targhee Ewes
- A. L. Kelley, K. C. Davis, P. G. Hatfield, R. W. Kott, J. M. Rumph...44
Estimation of Digesta Kinetics of Forage Kochia and Tall Wheatgrass Using YB and DY when Fed Alone or Mixed Together
- A. R. Wall, K. C. Olson, C. A. Stonecipher, M. Stuart, M. A. Maughn, J. C. Malechek...48
Effects of Ovariectomization and Synovex - Plus Implants on the Somatotropic Axis in Feedlot Heifers
- C. R. Bailey, S. R. Sanders, G. C. Duff, S. P. Cuneo, C. P. McMurphy, S. W. Limesand, J. A. Marchello, D. W. Schafer...52
Effects of Supplemental Safflower and Vitamin E During Late Gestation on Lamb Growth, Serum Metabolites and Thermogenesis
- J. M. Dafoe, P. G. Hatfield, R. W. Kott, B. F. Sowell, J. G. Berardinelli, and K. C. Davis...56
Breeding and Genetics
Inheritance of Facial Hair Whorl Attributes in Holstein Cattle
- K.L. Shirley, D.J. Garrick, T. Grandin, M. Deesing...63
Genetic Parameters of First Lactation Curve Traits for Holstein - Fresian Cows in Tunisia
- B. Rekik, A. Ben Gara, and N. Medini...67
Breed of the Dam Effects on Carcass Traits and Shear Force of Beef Cattle
- D. C. Anderson, M. W. Tess, K. C. Davis, D. L. Boss, D. D. Kress...71
Genetic Correlations of Component Carcass Traits with Retail Product percentage in Simmental Cattle
- D. H. Crews, Jr., R. M. Enns, J. M. Rumph, E. J. Pollak, R. L. Quaas...75
Parameter Estimates and Breeding Values for Days to a Constant Fat Endpoint
- B.W. Brigham, S.E. Speidel, D.W. Beckman, D.J. Garrick, W. Vanderwert, S. Willmon, R.M. Enns...79
Potential Re - Ranking of Sires for Weaning Weight in Above - and Below - Average Environments
- S.E. Speidel, R.M. Enns, D.J. Garrick...82
Breed Comparisons and Trends for Ewe Productivity and Lamb Growth Traits in Sheep Managed as Contemporaries in a Western Range System
- T. D. Leeds, G. S. Lewis...86
Analysis of Scrotal Circumference Adjusted for Age or Weight in Charolais Field Data
- J.M. Rumph, R.E. Williams...90
Genetic Parameters for Stayability and Body Condition Score in Beef Females
- D.W. Beckman, S.E. Speidel, B.W. Brigham, D.J. Garrick, R.M. Enns...93
Environment and Livestock Management
Performance of Early Weaned (~80 D) Vs Normal Weaned (~215 D) Cows in the Northern Great Plains
- T. W. Geary, R. C. Waterman, J. A. Paterson, R. P. Ansotegui, R. J. Lipsey...99
Performance of Early Weaned (~80 D) Vs Normal Weaned (~215 D) Calves in the Northern Great Plains
- R. C. Waterman, T. W. Geary, J. A. Paterson, R. P. Ansotegui, R. J. Lipsey...103
Growth Performance and Carcass Characteristics of Lambs Fed Carnival or Forager Field Peas
- P. L. Price, J. M. Krall, S. L. Lake, T. R. Weston, V. Nayigihugu, B. W. Hess...108
Growth and Reproductive Performance of Beef Heifers Fed Carnival or Forager Field Peas
- B. W. Hess, J. M. Krall, B. K. Stevens, S. L. Lake, T. R. Weston, V. Nayigihugu...113
The Effects of Timber Harvest, Herbivory, and Season of Use on Diet Selection of Steers Grazing Forested Rangelands
- K. J. Walburger, T. DelCurto, M. Vavra...117
Effects of Early Weaning on Cow Performance, Grazing Behavior, and Winter Feed Costs in the Intermountain West
- D. W. Bohnert, D. C. Ganskopp, D. D. Johnson, and S. J. Falck, M. L. Merrill, A. A. Clark...121
Vitamin D Supplementation in Fall Born Rambouillet Lambs Raised on Small Grain Pastures
- J. M. Self, M.W. Salisbury, B.J. May, G.E. Engdahl, C.B. Scott, R. Horst...125
Fenceline Weaning and Forage Barley to Extend the Grazing Season for Replacement Heifers
- R. J. Pruitt, W. B. Epperson, V. N. Owens, A. J. Smart...129
Corn Germ as a Source of Supplemental Fat For Cows in Late Gestation
- R. J. Pruitt, J. A. Clapper, W. B. Epperson, G. A. Perry...133
An Evaluation of Western Whiteface Lamb Loss on the Range
- R.R. Redden, S.H. Cox, M.R. Rubio, T.T. Ross...137
Effects of Weaning Date and Retained Ownership on Cattle Performance and Forage Disappearance in Spring Calving Beef Systems
- D. G. Landblom, S. Paisley, P. Johnson, R. Gates, S. W. Fausti, H. H.Patterson...139
Alternative Supplementation Strategies for Replacement Beef Heifers Grazing Dry California Foothills Annual Range or Irrigated Pasture During Summer
- R. B. Monteiro, G. D. Cruz, D. M. Myers, J. Maas, J. W. Oltjen, R. D. Sainz...143
Extension
Case Study: A Five Year Summary of Carcass Data from Calves Enrolled in the Montana Beef Network
- K.M. Rolfe, J.A. Paterson, S. Suther, M. King, L. Corah...149
Effect of Decreasing Temperature on the Readability of Six Different Radio Frequency Electronic Identification Transponders Scanned by Five Different Tranceivers
- L.E. Wallace, J.A. Paterson, R. Clark, A. Kellom, T. Standley, M. Vogel...152
Readability and Retention Rates of Radio Frequency Identification (RFID) Ear Tags when Tracking the Movement of Calves Using Three Scanning Methods
- A. Kellom, J. A. Paterson, R. Clark, L. Duffey...156
Effects of Prophylactic Administration of Certiofur Crystalline Free Acid on Health and Performance of Newly Received Beef Calves
- A. M. Encinias, D. A. Walker, C. W. Murdock, L. A. Reeves, K. J. Malcolm-Callis, S. Soto-Navarro...160
Extension Symposium
Working Together to Achieve Natural Resource Sustainability in Central Oregon
- C.T. Parsons, G. Hudspeth, J. Dedrick...167
Dutchwoman Butte Revisited: Examining Paradigms for Livestock Grazing Exclusion
- J. Sprinkle, M. Holder, C. Erickson, A. Medina, D. Robinett, G. Ruyle, J. Maynard, S. Tuttle, J. Hays, Jr., W. Meyer, S. Stratton, A. Rogstad, K. Eldredge, J. Harris, L. Howery, and W. Sprinkle...169
Digital Imagery and Landscape - Scale Rangeland Monitoring
- J. B. Taylor, D. T. Booth, C. M. Moffet...173
Vegetative Management Using Controlled Sheep Grazing - The Montana Sheep Institute
- L.M.M Surber, R. W. Kott, J. D. Moore, B. L. Roeder, G. Hewitt, J. Smith, K. Williams...177
Using Pre - Weaning and Post - Weaning Variables to Predict Carcass Quality
- J. S. Davy, J. W. Oltjen, D. J. Drake, A. L. Van Eenennaam...181
Survey Provides Information on Cow - Calf Handbook Use and Value
- J.B. Glaze, Jr., J.W. Oltjen, D.J. Drake...184
Food Safety
Prevalence of Shiga Toxin - Producing Escherchia Coli in Feedlot Steers Durning Winter and Spring
- L. M. Bollinger, H. S. Hussein, M. R. Hall, E. R. Atwill...191
Growth and Development
Metabolic Hormone Profiles in Rambouillet Lambs During the Preweaning Period
- M. J. McBee, R. L. Knight, J. M. Benavidez, L. D. Abercrombie, D. M. Hallford...197
The Effects of Breed Type and Growing Program on Feedlot Performance and Fat Gains in Beef Steers
- D. I. Jones, F. R. C. Araujo, F. R. B. Ribeiro, M. J. Yokoo, A. C. Sanches, J. W. Oltjen, R. D. Sainz...201
Meat Science and Muscle Biology
Feedlot Performance and Carcass Characteristics of Steers Treated with Two Beta - Adrenergic Agonists
- L. Avendaño-Reyes, V. Torres-Rodríguez, F. J. Meraz-Murillo, C. Pérez-Linares, F. Figueroa-Saavedra, F. D. Alvarez-Valenzuela, A. Correa-Calderón, P. H. Robinson...207
Meat Quality of Steers Treated with Two Beta - Adrenergic Agonists
- L. Avendaño-Reyes, V. Torres-Rodríguez, F. J. Meraz-Murillo, C. Pérez-Linares, F. Figueroa-Saavedra, F. D. Alvarez-Valenzuela, A. Correa-Calderón, P. H. Robinson...211
Effects of Feeding Olive Pomace on the Fatty Acid Profile of Pork
- S.P. Doyle, K.R. Harrison, C.A. Daley, P.C. Hamilton, D.K. Sinnott...216
Nonruminant Nutrition
Organic Zinc in Diets for Weaned Pigs
- M. H. B. Muniz, D. A. Berto, F. S. Wechsler, C. Fracaroli, A. A. Passos, G. J. M. M. Lima, V.S. Castro...221
A Study of Sweet (Surumi, Patacamaya, Sayana, Chucapaca) and Bitter (Real) Bolivian Quinoa Cultivars Compared to Corn, Barley and Oats on the Growth of Improved Guinea Pigs
- R. N. Pate, N. P. Johnston, E. Rico, A. Bonifacio, R. O. Kellems, D. L. Kooyman...225
The Palatability of Sweet (Surumi, Patacamaya, Sayana, Chuchapaca) and Bitter (Real) Bolivian Quinoa Cultivars, Corn, Barley and Oats as Guinea Pig Foodstuffs
- R. N. Pate, N. P. Johnston, E. Rico, A. Bonifacio, R.O. Kellems, D. L. Kooyman...229
Pastures and Forages
Russian Knapweed as a Protein Supplement for Beef Cows Consuming Low - Quality Forage
- D. W. Bohnert, R. L Sheley, and S. J. Falck, A. A. Nyman...235
Evaluating Beef Cow Performance: Comparing Crested Wheatgrass/Legumes, Big Bluestem, and Foxtail Millet in Swath Grazing
- B. W. Neville, G. P. Lardy, P. Nyren, K. K. Sedivec...238
Comparison of Techniques for Quantitative Analysis of Acid Detergent Ligning in Roughages
- T. R. Weston, V. Nayigihugu, B. W. Hess...242
Comparison of Catalysts for Direct Transesterification of Fatty Acids in Freeze - Dried Forage Samples
- T. R. Weston, J. D. Derner, C. M. Murrieta, D. C. Rule, B. W. Hess...245
Beef Cattle Grazing and Forage Production Comparisons of Alfalfa - Grass Versus Sainfoin Pastures
- A.D. Iwaasa, P.G. Jefferson, R. Lemke...249
Relationships Among Harvest Index, Forage Quality, Maturity and Other Factors in Barley Cultivars
- A. N. Hafla, S. D. Cash, P. F. Hensleigh, L.M.M. Surber...252
Accessing the Nutritive Value of One - Seed Juniper in Sheep
- M. E. Giacomini, S. Utsumi, S. Lodge-Ivey, A. Cibils, S. Soto-Navarro, R. L. Endecott, M. K. Petersen...256
Physiology
Breeding Performance of Primiparous Beef Cows Exposed to the Biostimulatory Effect of Bulls Using a Progestin - Based Estrous Synchronization Protocol
- S. A. Tauck, J. G. Berardinelli...263
Comparison of CIDR and MGA as Progestin Sources in an Estrus Synchronization Protocol that Included Progestin, PGF2A, and Timed AI and GNRH in Beed Heifers
- S. A. Tauck, J. R. C. Wilkinson, J. G. Berardinelli...268
Superimposing 12 d MGA Pre - Feeding and (or) 7 d CIDR on the Select Synch (GnRH - PG) Estrous Synchronization Protocol in Beef Cows
- J.K. Ahola, V.A. Aznarez, G.E. Seidel, Jr., J.C. Whittier ...272
Microarray Analysis of Gene Expression in Anterior Pituitary Glands from Anestrous and Cycling Postpartum Beef Cows
- A. J. Roberts, D. J. McLean...276
Effects of DAM Nutrition on Growth and Reproductive Performance of Heifer Calves
- J.L. Martin, K.A. Vonnahme, D.C. Adams, G.P. Lardy, R.N. Funston...280
Effects of Preservation and Time of Processing on Blood Glucose Concentrations in Beef Heifers
- S. L. Lake, V. Nayigihugu, B. W. Hess...285
Effect of Dilution, Refrigeration and Cryopreservation on Capacitation - Like Changes in Ram Spermatozoa
- F. A. Rodríguez-Almeida, C. O. Ávila, A. Anchondo, B. E. Sánchez, J. A. Jiménez...288
Estrus Synchronization and Fertility in Creole Cows Treated with CIDR®, Progesterone, â-Estradiol and PGF2á
- J. P. Zárate Martínez, J. A. Ramírez Godínez, F. A. Rodríguez Almeida ...292
Ruminant Nutrition
Determination of Diet Protein and Digestability of Native Sandhills Upland Range
- B.G. Geisert, T.J. Klopfenstein, D.C. Adams, J.A. Musgrave...297
Diet Quality Impacts on Ewe Nutrient Partitioning
- R. L. Endecott, S. L. Lodge-Ivey, K. K. Kane, L. M. Dixon, B. R. Schilling, M. E. Giacomini, S. A. Soto-Navarro, C. A. Löest, D. E. Hawkins, M. K. Petersen...302
Effect of Fat Supplementation of Steers Grazing Wheat Pasture on Forage Intake and Digestion Characteristics
- D. Chabot, C Chabot, L. K. Conway, S. A. Soto-Navarro...306
Effect of Ferrous Chloride on Suckling Calves and on Microbial Growth and Metabolism Using an In Vitro Rumen Culture System
- P. S. Hole, M. B. Schelvan, J. O. Hall...313
Correlation Between Water Mineral Content and Production Parameters in Dairy Cattle
- P. S. Hole, A. J. Young, J. O. Hall...318
Effects of Graded Levels of Zeolite on the Digestibility and Nutrient Intake of Sheep
- Ruíz-Barrera, O., Y. Castillo-Castillo, C. Arzola-Álvarez, H. Rubio-Arias, F. Salvador-Torres, C. Rodríguez-Muela, C. Holguín -Licón, J. Jiménez-Castro...322
Phosphorous Absorption of Feed Ingredients Commonly Used in Ruminant Production Systems in Venezuela
- Godoy S., C. F. Chicco...325
Effect of Level of Urea and Soybean Meal at Solid State Fermentation of Apple Byproducts
- Rodríguez-Muela C., D. Díaz, F. Salvador, A. Alarcón, O. Ruiz, C. Arzola, J. Jiménez...328
Effect of Organic and Inorganic Selenium Supplementation on Weight Performance of Ewes and Lambs
- J. Segovia, C. Arzola, O. Ruíz, J. Salinas, C. Rodriguez-Muela, J. Jiménez...331
Protein Supplementation of Low - Quality Forage: Influence of Frequency of Supplementation on Ruminant Performance and Nutrient Utilization
- C. S. Schauer, M.M. Stamm, D.W. Bohnert, J. S. Caton...335
Lamb Muscle Selenium Concentration Plateaus Following 56 Days of Selenium Supplementation
- C.S. Schauer, J. Held, J.A. Daniel, J.S. Caton, P.G. Hatfield, R. Stobart, J.O. Hall...339
Profitable Calf Backgrounding Integrating Annual Forage Crops
- M. M. Stamm, C. S. Schauer, L. M. M. Surber, S. D. Cash, A. L. Todd...343
Effects of Energy Level on Post Ruminal Valine Utilization by Sheep
- S. Kuykendall, C. A. Löest...346
Effects of Maternal Selenium Supply and Dietary Restriction on Cellularity Estimates of Fetal Jejunum, Heart, and Skeletal Muscle
- T. L. Neville, M. A. Ward, J. J. Reed, K. A. Vonnahme, A. T. Grazul-Bilska, P. P. Borowicz, D. A. Redmer, L. P. Reynolds, J. S. Caton...350
Influence of Slice Bailing Alfalfa Hay on Hay Quality and Digestive Function of Steers Consuming a Feedlot Finishing Diet
- F. Loya-Olguin, A. M. Encinias, D. A. Walker, N. A. Elam, S. Soto-Navarro...354
Effects of Urea Supplementation Level on Performance of Suffolk Lambs Consuming a high Concentration Diet
- A. Islas, L. E. Camacho, K. Beebe, S. A. Soto-Navarro, J. M. Benavidez, R. L. Knight, M. J. McBee, F. O. Loya, L. D....358
Feeding Value of Corn and 'Valier' Barley for Finishing Steers
- N. L. Iversen, J.G.P. Bowman, A. V. Grove, B. Robinson, T. K. Blake...363
Digestibility of Barley Beta - Glucan in Cattle
- A. V. Grove, C. R. Kaiser, N. Iversen, A. Hafla, B. L. Robinson, J.G.P. Bowman...367
Feeding Value of Corn, 'Haxby', 'Valier,' and 'H3' Barley Varieties for Finishing Steers
- A. V. Grove, J.G.P. Bowman, D. L. Boss, T. K. Blake...370
Feeding Value of 'Haxby,' Valier,' 'MT960099,' and 'Eslick' Barley Varieties for Finishing Steers
- A. V. Grove, J.G.P. Bowman, L.M.M. Surber, D. L. Boss, T. K. Blake...374
Feeding Value of Corn, 'Valier' Barley, and Corn/Valier Combinations for Finishing Steers
- A. V. Grove, J.G.P. Bowman, L.M.M. Surber, T. K. Blake...378
Feedlot Performance and Serum Metabolic Hormone Profiles in Lambs Receiving Four Levels of Soybean Meal Supplementation
- L. E. Camacho, S. A. Soto-Navarro, J. M. Benavidez, R. L. Knight, M. J. McBee, F. O. Loya, L. D. Abercrombie, D. M. Hallford...382
Evaluation of Animal Performance in Crossbred Hair Lambs with a High Concentrate Diet
- G. Villalobos, F.A. Rodríguez-Almeida, G. Lara-Camargo, J.C. Estrada, M. Zapata, D. Domínguez...387
Effect of White Corn Processing Method on Some Digestion Indicators of Brahman Cross Finishing Bulls
- R. Barajas, B. J. Cervantes, I.G. Gonzalez, J.M. Romo , J.J. Lomeli...389
Effect of White Corn Processing Method on Feedlot Performance of Brahman Cross Finishing Bulls
- R. Barajas, B. J. Cervantes , R. de J. Virgilio, J.M. Romo, J.J. Lomeli...392
Effect of White Corn Processing Method on Carcass Characteristics of Brahman Cross Finishing Bulls
- R. Barajas, B. J. Cervantes , R. de J. Virgilio, J.M. Romo, J.J. Lomeli...395
Performance and Residual Feed Intake are Similar in Angus - Hereford Steers Housed in Individual or Group Pens
- G. D. Cruz, R. B. Monteiro, J. A. Rodriguez, D. B. Monteiro, R. D. Sainz...398
Carcass Compsition and Visceral Organs are Similar at Harvest in Low - and High - Residual Feed Intake Groups of Angus - Hereford Steers
- R. D. Sainz, G. D. Cruz, R. B. Monteiro, J. A. Rodriguez, D. B. Monteiro, V. Guidi, R. J. Anaruma...401
Whey Silage for Beef Cows Under Maintenance Conditions
- D.R. ZoBell, K.C. Olson, R.D. Wiedmeier , C. Stonecipher, C. Kim Chapman...404
Author Index...411
