American Society of Animal Science Western Section

2005 Proceedings

General Interest

Minutes of the 2004 Western Section Business Meeting

2004 Distinguished Service Award Paper

Random musing on land grant universities: Their relevance and future

- M. Vavra...3

Graduate Student Competition

Characteristics and potential nutritive value of sagebrush-grassland vegetation collected from sites continuously grazed, rested for one year and one year post-disturbance

- T. R. Weston, R. A. Olson, V. Nayigihugu, S. L. Lake, J. D. Derner, G. E. Schuman, and B. W. Hess...9

Assessing storage of wet brewers’ grains with straws

- M. Kennedy, J. Males, and M. Keller...13

Effect of trace mineral supplementation on fecal shedding of E. coli O157:H7 in calves

- K. Skinner, J. Paterson, T. Standley, B. Rainey, and K. Hager...17

The use of experimental vaccine in gestating beef cows to reduce the shedding of E. coli 0157:H7 in the newborn calf

- T. Standley, J. Paterson, K. Skinner, B. Rainey, A. Roberts, T. Geary, G. Smith, and R.White...21

Resumption of ovarian cycling activity and breeding performance of first-calf suckled beef cows exposed to mature bull urine

- S. Tauck, J. Berardinelli, and N. Johnson...25

Effects of ruminal protein degradability and frequency of supplementation on nitrogen retention and apparent digestibility in lambs fed low-quality forage

- R. L. Atkinson, C. D. Toone, L. R. Allen, and P. A. Ludden...29

Effects of Estradiol Cypionate on conception and pregnancy rates of beef cattle synchronized with a modified timed artificial insemination protocol

- J. M. Howard, R. Manzo, F. Frago, D. G. Falk, J. B. Glaze, and A. Ahmadzadeh...33

Evaluation of milk somatic cells as a source of mRNA for study of mammary gland lipogenesis in lactating beef cows

- C. M. Murrieta, E. J. Scholljegerdes, B. W. Hess, D. C. Rule, T. E. Engle, and K. L. Hossner...36

Effects of pre- and postpartum nutrition on reproduction in cows and calf feedlot performance

- L. A. Stalker, D. C. Adams, T. J. Klopfenstein, and R. N. Funston...40

Comparative hepatotoxicity of metabolites associated with snakeweed (Gutierrezia spp.)

- L. Hernandez, G. Bell, T. Ross, R. Halasheh, A. Carman, and C. Löest...45

Effects of implant programs on subcutaneous adipose lipogenic gene expression and subcutaneous and abdominal fatty acid profiles in long-fed Holstein steers

- R. C. Cheatham, G. C. Duff, P. C. Gentry, S. R. Sanders, L. H. Baumgard...48

Supplemental methionine and uterine infection alters essential amino acid metabolism in nulliparous ewes

- T. M. Thelen, C. A. Löest, S. Wang, G. S. Lewis, and J. B. Taylor...52

Influence of energy supplementation and monensin on forage digestibility and intake

- C. Dahl, K. Olson, C. Stonecipher, and L. Wood...56

Behavior

The effect of bloat on ingestive behavior patterns of steers grazing wheat forage

- W. Pinchak and B. Min...61

Relationship between sexual behavior classifications of rams and lambs sired in a competitive breeding environment

- J. Stellflug, N. Cockett, and G. Lewis...65

Breeding and Genetics

Development of a multiple trait selection index for feedlot traits in beef cattle including feed efficiency

- D. H. Crews, Jr., G. E. Carstens, and P. A. Lancaster...71

Prediction of reproductive traits in Brangus heifers using a SNP and translated product of the IGF-I gene

- K. L. Shirley, M. G. Thomas, D. M. Hallford, G. A. Silver, V. R. Beauchemin, R. Steiner, and R. M. Enns...75

Sire and dam effects on distribution patterns of cows grazing mountainous rangeland

- D. W. Bailey, H. C. Van Wagoner, D. J. Garrick, M. G. Thomas, and R. Weinmeister...79

Weaning weight heritability estimates in different environments

- S. E. Speidel, R. M. Enns, and D. J. Garrick...83

Economic evaluation of genetic differences among Angus bulls

- M. MacNeil and W. Herring...87

Segregation of disposition scores among families of Bos inducus-Bos Taurus crosses

- A. D. Herring, J. O. Sanders, D. K. Lunt, J. E. Sawyer, M. A. Wegenhoft, and C. A. Gill...91

Estimates of genetic and phenotypic parameters of postweaning growth traits in Limousin cattle in Samalayuca, Mexico

- A. Pérez-Márquez, J. Trejo, J. F. Ponce, M. Montaño, A. Correa, L. Avendaño, H. González, and J. N. Guerrero...95

Genetic parameters for birth weight and calving difficulty in the progeny of Holstein heifers mated AI by Jersey sires

- A. Pérez-Márquez, J. M. Bañuelos, J. F. Ponce, M. Montaño, L. Avendaño, A. Correa, F. Rivera, and J. Guerrero...98

Reproduction traits and calf performance of first calf heifers sired by bulls with high marbling or high retail product EPD

- K. C. Davis, M. W. Tess, J. M. Rumph, R. P. Ansotegui, and H. C. VanWagoner...102

Using additional phenotypic information in data poor analyses

- B. W. Brigham, R. M. Enns, and D. J. Garrick...105

Genetic parameter estimates for docility in Limousin cattle

- D. Beckman, S. Speidel, B. Brigham, D. Garrick, and R. Enns...109

Variability in economic value is dependent upon herd average stayability

- R. M. Enns, D. J. Garrick, and B. W. Brigham...112

Characterization of the Montana Line 4 inbred Hereford herd

- J. M. Rumph, D. D. Kress, K. C. Davis, D. C. Anderson, H. C. VanWagoner, and D. L. Boss...116

Influence of incorrect estimates of inbreeding on the genetic analysis of mature cow weights in a population of inbred Holstein cattle

- J. M. Rumph, D. D. Kress, K. C. Davis, D. C. Anderson, H. C. VanWagoner, and D. L. Boss...121

Age-of-dam adjustment factors for scrotal circumference in the Montana Line 4 Hereford herd

- J. M. Rumph, D. D. Kress, K. C. Davis, D. C. Anderson, H. C. VanWagoner, and D. L. Boss...125

Environment and Livestock Management

Milk yield of beef heifers from three calving systems

- E. E. Grings, A. J. Roberts, and T. W. Geary...131

Growth performance and carcass characteristics of finishing hogs consuming 'dun' or 'white' field peas

- A. Wolf, E. Scholljegerdes, J. Krall, S. Lake, and B. Hess...135

Effect of protein level on feedlot performance and carcass characteristics of Texas Rambouillet feeder lambs

- D. Woolley, B. May, and M. Salisbury...139

Timing of puberty, anestrus, and return to cyclicity in female offspring of ewes treated with propylthiouracil and melatonin during pregnancy

- R. Knight, C. Gifford, and D. Hallford...143

Serum thyroxine and triiodothyronine in preweaning Rambouillet lambs

- V. Garcia, C. Gifford, R. Knight, C. Storer, L. Abercrombie, and D. Hallford...145

Fertility, prolificacy and birth weights in crossbreds from Pelibuey sheep in two consecutive years

- L. Avendaño-Reyes, F. D. Alvarez-Valenzuela, L. Molina-Ramírez, R. Rangel- Santos, R. Correa-Calderón, A. Pérez-Márquez, and J. S. Quintero-Saucedo...148

Development of an assay to determine single nucleotide polymorphisms (SNP) in the prion gene for the diagnosis of genetic susceptibility in scrapie in sheep

- M. L. Johnson, J. M. Evoniuk, C. L. Stoltenow, K. I. O’Rourke, and D. A. Redmer...151

Relationships among growth traits, serum hormone profiles, and date of puberty in Rambouillet ewe lambs

- C. Storer, R. Knight, C. Gifford, V. Garcia, L. Abercrombie, M. McBee, and D. Hallford...156

Effect of chromium methionine supplementation on kidney function indicators, liver and kidney weight in finishing hair lambs

- F. Juarez, R. Barajas, and M. A. Espino...159

Comparative hepatotoxicity of plant extracts, pure compounds, and gastrointestinal fluids associated with snakeweed (Gutierrezia spp.)

- L. Hernandez, G. Bell, and T. Ross...163

Breeding Suffolk rams to Western White Face ewes on New Mexico rangelands increases weaning weight of lambs

- R. Redden, S. Cox, and T. Ross...167

Performance of Holstein calves at weaning according to birth season in Mexicali Valley

- J. S. Saucedo, L. Avendaño, F. D. Alvarez, C. Ceseña, T. B. Rentería, J. F. Moreno, M. F. Montaño, G. E. Medina, and M. P. Gallegos...170

Productivity and profitability of pasture-based versus intensive value addition strategies for culled beef cows

- J. Sawyer, C. Mathis, R. Kirksey, and L. Lauriault...173

Idaho dairy beef quality assurance survey

- J. B. Glaze, Jr. and M. Chahine...177

Extension

A survey of cow-calf producers in Oregon and Nevada - production practices

- D. W. Bohnert, R. F. Angell, and R. C. Torell...183

Impact of preconditioning duration on feedlot performance, carcass characteristics, and profitability of New Mexico ranch to rail steers

- J. W. Waggoner, C. P. Mathis, C. A. Löest, J. E. Sawyer, and F. T. McCollum, III...186

Extension Symposium

Tracking cattle from the ranch to the packer: The Montana Beef Network and National ID Project

- J. Paterson, L. Duffey, J. Peterson, S. Pilcher, M. Bridges...191

Tri-National Animal Identification System (NAIS) project synopsis

- J. C. Whittier, J. Scanga, W. Umberger, W. Cunningham, C. Heckendorf, and J. Heller...195

The Northwest Pilot Project: Finding real world solutions to animal identification

- J. A. Morrison, R. R. Stott, J. B. Glaze, Jr., and J. K. Ahola...199

Developing beef quality assurance materials for youth

- L. Holmgren, D. R. ZoBell, and C. K. Chapman...203

Food Safety

Vaccination on the ranch as an intervention strategy to reduce the probability of detecting E. coli O157:H7 associataed with commercial feedlot cattle

- R. Peterson, J. Paterson, D. Smith, R. Moxley, T. Klopfenstein, G. Erickson, W. Choat, and S. Hinkley...209

Effects of feeding endophyte-infected tall fescue seed to sheep experimentally infected with Escherichia coli O157:H7

- M. L. Looper, T. S. Edrington, C. F. Rosenkrans, Jr., J. M. Burke, R. Flores, T. R. Callaway, G. E. Aiken...213

Vaccination as an intervention strategy for reduction of Escherichia coli O157:H7 in cattle feces

- T. Choat, J. Paterson, B. Rainey, G. Smith, K. Belk, and R. White...217

Prevalence of Shiga toxin-producing Escherichia coli in cattle

- L. M. Bollinger, H. S. Hussein, T. Sakuma, M. R. Hall, and E. R. Atwill...222

Effects of feed intake, stress or exogenous hormones on Salmonella enterica serovar Choleraesuis in pigs

- T. Edrington, K. Genovese, C.Schultz, T. Callaway, J. McReynolds, R. Anderson, And D. Nisbet...226

Salmonella persistence on a Southwestern United States dairy

- T. Edrington, C. Martinez, T. Ross, T. Callaway, K. Genovese, R. Anderson, and D. Nisbet...230

Growth and Development

Effects of estradiol (E2) and linseed meal (LSM) on liver weight, protein concentration, and DNA concentration in OVX ewes

- M. R. O’Neil, G. P. Lardy, L. P. Reynolds, J. S. Caton, and K. A. Vonnahme...237

Relationship between serum metabolites at feedlot entry and subsequent carcass character- istics in Brangus-crossbred calves

- R. Flores, J. May, M. Nihsen, M. Looper, K. May, D. Hallford, and C. Rosenkrans, Jr....240

Effects of forage cultivar and anthelmintic on steer responses to immune challenges

- C. Rosenkrans, Jr., M.Nihsen, R. Flores, T. Yazwinski, D. Kreider, K. Coffey, W. Coblentz, C. West, M. Looper, and N. Schrick...243

Meat Science Muscle Biology

Incidence and characteristics of iridescent bovine meat

- F. Nunez-Gonzalez, J. Garcia-Macias, F. Rios-Rincon, J. Hernandez-Bautista, and J. Ortega-Gutierrez...249

Non-Ruminant Nutrition

Effect of GnRH-analogue and chromium methionine supplementation on reproductive performance of sows

- J. A. Romo, R. Barajas, J. J. Valencia, J. Castañeda, E. Silva, and A. Orihuela...257

Effect of GnRH-analogue and chromium methionine supplementation on reproductive performance in young sows

- J. A. Romo, R. Barajas, J. J. Valencia, J. Castañeda, E. Silva, and A. Orihuela...261

Pastures And Forages

The effects of early weaning on cow performance and grazing behavior in the Inter- mountain West

- D. W. Bohnert, D. C. Ganskopp, D. D. Johnson, and S. J. Falck...267

Use of green fodder produced in hydroponic systems as supplement for Salers lactating cows during the dry season

- C. Rodriguez-Muela, H. E. Rodriguez, O. Ruiz, A. Flores, J. A. Grado, and C. Arzola...271

Yearly forage production of irrigated pastures grazed by cow-calf pairs as affected by the timing of sprinkler irrigation application

- R. Wiedmeier, A. Young, and P. Schmidt...275

Long-term use of low-quality forages in beef cow nutritional management effects on productivity and economics

- H.Wayment, R. Wiedmeier, K. Olson, D. Snyder, and P. Schmidt...277

Predicting nutritive value of irrigated pastures using near infrared reflectance spectro- photometer

- O. Ruiz-Barrera, C. Rodríguez-Muela, C. Arzola-Alvarez, A. Torres-Rivas, Y. Castillo-Castillo, and C. Holguin-Licón...281

Forage quality and agronomic characteristics of spring barley core collection lines compared to commercial barley cultivars

- L. M. M. Surber, J. A. Pugh, K. K. Krausz, S. D. Cash, A. L. Todd, B. L. Robinson, and J. G. P. Bowman...283

Effects of sampling date on the forage quality and quantity of stockpiled native range in southwestern North Dakota

- W. Poland, B. Porter, and L. Tisor...286

Effect of weaning date and retained ownership on cattle performance and forage disappearance in spring calving beef systems

- D. Landblom, H. Patterson, P. Johnson, R. Gates, and S. Paisley...291

Utilization of field pea and sunflower meal as dietary supplement for beef cows

- W. Poland, L. Tisor, C. Smith, T. Transtrom, and A. Bartlett...295

Efficacy of a self-fed small supplement for prepartum cows grazing dormant pinon- juniper rangeland

- J. Sawyer, S. Cox, R. Endecott, M. Rubio, S. Ivey, and M. Petersen...299

Seed bandwidth, plant population and maturity stage effects on barley forage when using air drill technology

- D. L. Boss, G. C. Carlson, P. L. Bruckner, R. N. Stougaard, P. F. Lamb, T. K. Blake, and J. G. P. Bowman...303

Physiology

Effects of Flunixin Meglumine on pregnancy establishment in beef cattle

- T. Geary, R. Ansotegui, A. Roberts, R. Waterman, M. MacNeil, E. Grings, B. Thompson, and R. Lipsey...309

Effects of protein and energy feeding on ovine oocyte production and developmental capacity

- W. Kiker, M. Salisbury, G. Engdahl, B. Green...312

Utilization of whole soybeans or corn milling co-products in beef heifer development diets

- H. Harris, A. Cupp, R. Funston...317

Intraluteal treatment of bovine corpus luteum with Indomethacin

- R. D. Speckmann, K. K. Kane, L. M. Dixon, J. S. Nelson, J. E. Bruemmer, G. D. Niswender, and D. E. Hawkins...322

Artificial insemination pregnancy rates using a modified Co-Synch protocol for primiparous suckled cows exposed to the biostimulatory effect of bulls

- J. Berardinelli, P. Joshi, and S. Tauck...325

Effects of supernutritional levels of Selenium (SE) on vascular density and cell proliferation in the sheep placenta

- P. Borowicz, M. Ward, J. Caton, S. A. Soto-Navarro, D. Redmer, J. Taylor, and L. Reynolds...329

Association of growth and carcass traits with attainment of puberty in heifers fed at two levels

- A. J. Roberts, E. E. Grings, M. D. MacNeil, T. W. Geary, and S. I. Paisley...333

Heparin level effect on sperm capacitation of fresh and frozen-thawed bovine semen

- F. A. Rodríguez-Almeida, M. Cuadras, A. Anchondo, S. Romo-García, B. E. Sánchez, J. A. Jiménez, and A. D. Alarcón-Rojo...336

Quality standards for somatic cell counts and accuracy of pooled samples to detect sub- clinical mastitis in ewes milk

- A. Ciliax, D. Holcombe, G. Fernandez, E. Huether, and L.Mortensen...339

Changes in pituitary gene expression between surgically castrated and LHRH immuno- castrated male rats

- J. A. Hernandez, J. M. Sosa-Manzo, J. J. Reeves, and D. J. McLean...343

Ruminant Nutrition

Calcium absorption and calcium kinetics in sheep fed non-conventional phosphates

- S. Godoy and C. F. Chicco...349

Effect of level and source of selenium on growth and cellular proliferation of maternal jejunal tissue in growing pregnant ewe lambs

- S. L. Julius, J. S. Caton, M. A. Ward, S. A. Soto-Navarro, D. A. Redmer, K. A. Vonnahme, P. P. Borowicz, J. B. Taylor, and L. P. Reynolds...352

The influence of length of supra-selenium supplementation on selenium status, feedlot performance, and carcass characteristics of finishing lambs

- C. S. Schauer, J. Held, J. A. Daniel, J. S. Caton, P. G. Hatfield, R. Stobart, L. P. Anderson, and J. O. Hall...356

Body condition score at parturition and effects of postpartum supplemental fat on metabolite and hormone concentrations of beef cows

- S. Lake, E. Scholljegerdes, V. Nayigihugu, R. Atkinson, E. Van Kirk, D. Rule, D. Hallford, G. Moss, and B. Hess...360

Effect of the urea concentration in protein supplement added to dry grass on the in vitro production of gas, volatile fatty acids and ammonia

- C. Rodríguez-Muela, E. Aguirre-Cano, F. Salvador, J. A. Ortega, C. Villalobos, and C. Arzola....365

In vitro and in vivo rumen fermentation and gas production: Influence of corn and mineral oils and their bloat potential

- B. Min and W. Pinchak...369

Kinetics of ruminal degradation of four corn silage hybrids using in vitro gas production

- N. Y. Castillo, C. Arzola, O. Ruiz, and C. Rodriguez-Muela...373

Valine limits nitrogen retention of growing lambs

- J. W. Waggoner, C. A. Löest, A. V. Ferreira, J.E. van Nolte, M. K. Petersen, and D. M. Hallford...376

Effects of various exposure routes of swainsonine on serum constituents, rumen character- istics, and nutrient metabolism of sheep

- B. S. Obeidat, C. A. Löest, T. M. Thelen, J. R. Strickland, J. E. Sawyer, J. B. Taylor, and D. M. Hallford...378

Fatty acid composition of plasma, medial basal hypothalamus, and uterine tissue in primiparous beef cows fed high-linoleate safflower seeds

- E. Scholljegerdes, S. Lake, T. Weston, D. Rule, G. Moss, T. Nett, and B. Hess...383

Feedlot performance, carcass characteristics, and health responses of steers fed inorganic and organic sources of copper, manganese, and zinc

- T. Covey, D. Walker, K. Malcolm-Callis, J. Gleghorn, K. Ridenour, J. Thurman, G. Culp, S. Soto-Navarro, L. Morrison, and D. Hallford...388

Effect of creep feed supplementation and season on intake, microbial protein synthesis and efficiency, digestion, and ruminal fermentation in nursing calves grazing native range in southeastern North Dakota

- J. Reed, A. Gelvin, G. Lardy, M. Bauer, and J. Caton...392

Influence of dietary fat on digestive function of beef steers fed a steam-flaked corn-based finishing diet containing wet corn gluten feed

- L. Morrison, S. Soto-Navarro, D. Walker, K. Malcolm-Callis, J. Gleghorn, P. Defoor, T. Covey, and D. Hallford...397

Effect of distiller’s grain based creep feed and season on intake, microbial protein synthesis and efficiency, digestion, and ruminal fermentation in nursing calves grazing native range in southeastern North Dakota

- J. Reed, J. Lund, G. Lardy, M. Bauer, M. Gibson, and J. Caton...401

Effect of creep feeding and season on intake, performance, and graze diet quality in nursing steer calves grazing native range in southeastern North Dakota

- J. Lund, J. Reed, G. Lardy, M. Bauer, M. Gibson, and J. Caton...405

Evaluation of performance and costs of two heifer development systems

- R. R. Salverson, H. H. Patterson, G. A. Perry, and M. L.Gibson...409

Effect of level and source of dietary SE on SE concentration in maternal and fetal tissues of pregnant ewe lambs during late gestation

- M. Ward, J. Caton, J. Taylor, S. Soto-Navarro, K. Vonnahme, J. Reed, D. Redmer, and L. Reynolds...413

Effects of nutrient restriction and dietary Se on growth and estimates of cellularity in jejunal, placental, and mammary tissues in pregnant ewe lambs

- M. Ward, J. Caton, J. Taylor, J. Reed, P. Borowicz, A. Grazul-Bilska, K. Vonnahme, D. Redmer, and L. Reynolds...417

Effects of nutrient restriction and dietary selenium (Se) on maternal and fetal metabolic hormones in pregnant ewe lambs

- M. Ward, J. Caton, J. Taylor, D. Hallford, J. Reed, P. Borowicz, K. Vonnahme, D. Redmer, and L. Reynolds...421

Phytic acid levels in barley for beef cattle finishing diets

- J. G. P. Bowman, J. J. Kincheloe, L. M. M. Surber, A. V. Grove, V. Raboy, J. A. Dorsch, and T. K. Blake...426

Influence of chromium methionine supplementation on growth performance of medium stressed bull-calves during feedlot receiving period

- R. Barajas, B. J. Cervantes, R. J. Virgilio, L. Almeida, J. M. Romo, and J. C. Calderon...430

Increasing glucogenic precursors in range supplements alters nutrient partitioning in young postpartum range cows

- R. L. Endecott, C. M. Black, S. H.Cox, M. R. Rubio, R. B. Lueras, K. L. Shirley, R. D. Speckmann, C. A. Löest, D. E. Hawkins, and M. K. Petersen...433

Effects of nutrient restriction and dietary selenium (Se) on Se concentrations in maternal and fetal tissues of pregnant ewe lambs

- M. Ward, J. Caton, J. Taylor, J. Reed, P. Borowicz, K. Vonnahme, M. Kapphahn, K. Freeberg, D. Redmer, and L. Reynolds...437

Digesta kinetics of steers fed kochia (Kochia prostrata) in a low quality forage diet

- C. Stonecipher, K. Olson, M. Buck, and J. Malechek...442

Effect of feeding range protein supplement on ruminal methylglyoxal production

- S. L. Lodge-Ivey, R. L. Endecott, K. D. Richardson, and M. K. Petersen...445

Effects of undegradable intake protein on milk yield, dry matter digestibility, and blood urea nitrogen in lactating goats fed ammoniated corn stover

- A. L. Rivas and J. S. Serrato-Corona...448

Effects of sulfates in water on performance of cow-calf pairs

- H. H. Patterson, P. S. Johnson, G. A. Perry, and R. N. Gates...451

Ruminal degradation of a chile pepper byproduct by cows

- D. Cazac, C. A. Löest, J. W. Waggoner, C. P. Mathis, and M. K. Petersen...454