SYMPOSIA

MONDAY, MARCH 17, 1997

TUESDAY, MARCH 18, 1997

Physiology
Gene Expression and Ovarian Function
8:00 - 10:15 a.m.
Convention Center, Room 136

Ruminant Nutrition/Forages
Assessment of the 1996 Beef Cattle NRC
9:30 a.m. - 12:00 noon
Convention Center, Room 134

Environment and Livestock Production
The Biology of Livestock Odor
1:00 - 5:00 p.m.
Convention Center, Room 205J

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Program '97 Midwestern Section Meeting: Tuesday

BOARD SPONSORED SYMPOSIUM

Symposium: Shaping Governmental Policy -- Opportunities for Animal Science Professionals
Monday afternoon, March 17
3:00 - 5:50 p.m.
Assembly Room 205

3:00

Opening Comments

3:10

Shaping policy -- Opportunities from a Capitol steps perspective. Dr. John Goldberg. Professional staff, U.S. House of Representatives Committee on Agriculture. Washington, DC.

3:40

Shaping policy -- Opportunities from an academic perspective. Dr. Victor Lechtenberg, Dean of Agriculture. Purdue University, West Lafayette, IN.

4:10

Shaping policy -- Opportunities from a commodity group perspective. Kirk Ferrell, Assistant Vice President of Public Policy, National Pork Producers Council. Washington, DC.

4:40

Shaping policy -- Experiences of a junior lobbyist. Bradley Walters, senior in animal science. University of Illinois, Urbana.

5:10

Panel Discussion

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SCIENTIFIC SESSIONS PROGRAM

Tuesday morning, March 18
Room 205E
Daniel Pomp, Chair
University of Nebraska, Lincoln

No. Time Paper

1 8:30

Evidence of a new genetic marker for litter size in pigs. T. H. Short^1*, O. I. Southwood², A. G. DeVries², D. G. McLaren¹, G. J. Evans³, A. J. Mileham⁴ and G. S. Plastow⁴, ¹PIC USA, Franklin, KY, ²PIC Europe, Fyfield Wick, Abingdon, Oxforshire, UK, ³Dalgety Food Technology Center, Cambridge, UK, ⁴PIC Group, Fyfield Wick, Abingdon, Oxforshire, UK.

2 8:45

Determination of allele frequencies of four microsatellite markers on porcine chromosome 2. S. A. Yonker*, G. H. Flickinger, and L. B. Schook, University of Minnesota, St. Paul.

3 9:00

Analysis of pig PIT-1 gene structure identifies a new polymorphism in the coding region. S. Wahls*, T.-P. Yu, C. Tuggle, Iowa State University.

4 9:15

Refinement of the syntenic boundary of pig chromosomes 4 and 6 to human chromosome 1. H. S. Sun¹, T. P. Yu¹, L. Wang¹, M. F. Rothschild¹, M. Yerle² and C. K. Tuggle¹, ¹Iowa State University, Ames, ²INRA, Laboratoire de Genetique Cellulaire, France.

5 9:30

Fine mapping the polled locus in cattle; Application in Marker–Assisted Selection. A. Eggen^1*, L. D. Doud², H. Hayes¹, G. Jurgella², M. Pfister Genskow², B. Murkve², J. F. Taylor³, H. Leveziel¹, and M. D. Bishop², ¹Laboratoire de Genetique biochimique et de Cytogenetique, INRA, Jouy–en–Josas, France, ²ABS Global, Inc., DeForest, Wisconsin, ³Department of Animal Science, Texas A&M University, College Station.

*Author presenting paper.
†Undergraduate competition paper.
‡Graduate competition paper.

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Symposium: Genetic and Nutritional Aspects of Feed Efficiency

10:00

Feed efficiency: Industry perspective. Mike Bishop. ABS Global, Inc., DeForest, WI.

6 10:15

A study of the genetic basis for feed intake in pigs: Quantitative, physiological and molecular approaches. Archie Clutter. Oklahoma State University, Stillwater.

10:45

Selection for high and low maintenance energy utilization in mice. Merlyn Nielsen. University of Nebraska, Lincoln.

11:15

Feed efficiency: Nutritional implications. Allen Trenkle. Iowa State University, Ames.

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Tuesday morning, March 18
Room 205J
Kelly Kreikemeier, Chair
Kansas State University

No. Time Paper

26 8:00

Phenotypic relationships between reproductive fitness and composition traits of Limousin replacement heifers. D. D. Faidley^1*, B. D. Banks¹, R. J. Tempelman¹, K. J. Andersen², and D. G. LeFever³, ¹Michigan State University, E. Lansing, ²North American Limousin Foundation, Englewood, CO, ³ Colorado State University, Fort Collins.

27 8:15

Efficiency of energy and nitrogen loss and gain in mature cows. H. C. Freetly*, and J. A. Nienaber, USDA, ARS, U.S. Meat Animal Research Center, Clay Center, NE.

28 9:00

Comparison of four real-time ultrasound systems that predict intramuscular fat in beef cattle. W. O. Herring*¹, L. A. Kriese², J. K. Bertrand³, and J. Crouch⁴. ¹University of Missouri, Columbia, ²Auburn University, AL, ³University of Georgia, Athens, ⁴American Angus Association, St. Joseph, MO.

29 9:15

†Five native legumes interseeded into standing switchgrass L. Brokaw*, and D. Ford, Truman State University, Kirksville, Missouri.

30 9:30

Performance of early weaned fall-born calves grazing wheat pasture. H. T. Purvis II, S. I. Paisley*, G. W. Horn, and K. S. Lusby, Oklahoma State University, Stillwater.

31 9:45

The effect of the timing of vaccination on health and growth performance of comingled calves. K. K. Kreikemeier^1*, J. T. Johns², G. L. Stokka¹, K. D. Bullock², T. T. Marston¹, and D. L. Harmon², ¹Kansas State University, Garden City, ²University of Kentucky, Lexington.

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Tuesday morning, March 18
Room 205J
Don Lay, Chair
Iowa State University

No. Time Paper

32 10:30

Effects of group size on performance, fat depth and serum concentrations of insulin-like growth factor-1 in growing-finishing pigs. G. R. Frank^1*, M. E. Spurlock¹, S. G. Cornelius¹, G. M. Willis¹, and M. McComb², ¹ Purina Mills, Inc., St. Louis, MO, ²Purdue University, West Lafayette, IN.

33 10:45

Multiple concurrent stressors depress performance in grower pigs in an additive fashion. Y. Hyun, M. Ellis, and R.W. Johnson*, University of Illinois, Urbana.

34 11:00

Environmental effects on genetic potential for lean gain. J. W. Frank*, B. T. Richert, A. P. Schinckel, B. A. Belstra, and A. L. Grant, Purdue University, West Lafayette, IN.

35 11:15

The effect of erythromycin thiocyanate on the growth performance of growing-finishing swine. D. E. Darden*, R. A. Rode, and D. J. Fidler, Abbott Laboratories, North Chicago, IL.

36 11:30

†Differences in maternal behavior between Meishan and Yorkshire gilts. J. A. Minick*, D. C. Lay, Jr., S. P. Ford, L. M. Hohenshell, N. J. Biensen, and M. E. Wilson, Iowa State University, Ames.

37 11:45

NPPC Innovation Award Winner – Applied Research Late estrus or metestrus insemination subsequent to estrual inseminations decreases farrowing rate and litter size in swine. K. J. Rozeboom*, M.H.T. Troedsson, G. C. Shurson, J. D. Hawton, and B. G. Crabo, University of Minnesota, St. Paul.

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Dairy Calves and Heifers
Tuesday morning, March 18
Room 138
Mike Fowler, Chair
Land O'Lakes, Fort Dodge, IA

No. Time Paper

50 8:00

Invited Paper–New perspectives on the energy requirements of preruminant calves. C. L. Davis, University of Illinois, Urbana.

51 8:45

Invited Paper–new perspectives on the protein requirements of preruminant calves. J. K. Drackley*, and C. L. Davis, University of Illinois, Urbana.

52 9:30

Changes in calf management practices in the U.S. from 1991 to 1996. J. D. Quigley, III^1* and S. J. Wells², ¹University of Tennessee, Knoxville, ²USDA–APHIS, Ft. Collins, CO.

53 9:45

Effects of cimetidine on the absorption of immunoglobulin G in neonatal calves. R. E. Kosa^1,2*, L. I. Gherman^1,2, H. L. Keller^1,2, D. C. Borger¹, and L. B. Willett¹, ¹Ohio Agricultural Research and Development Center, The Ohio State University, Wooster,²College of Wooster, Wooster, OH.

10:00 Break

54 10:15

Estimation of plasma volume in neonatal Holstein and Jersey calves. J. D. Quigley, III*, K. R. Martin, and J. J. Drewry, University of Tennessee, Knoxville.

55 10:30

Comparison of two control milk replacers containing 22% protein to milk replacers containing 18% protein and various fat levels. D. F. Waterman^1*, T. Tomkins¹, J. Edwards¹, C. L. Davis², J. K. Drackley², J. L. Morrill³ , and N. K. Keith⁴, ¹Milk Specialties Co., Dundee, IL, ²University of Illinois, Urbana, ³Kansas State University, Manhattan, and ⁴Keith Associates, Springfield, MO.

56 10:45

†Kinetics of blood fructose and glucose when lactose and fructose are used as energy supplements for neonatal calves. H. L. Keller^1,2*, L. I. Gherman^1,2, R. E. Kosa^1,2, D. C. Borger¹, and L. B. Willett¹, ¹Ohio Agricultural Research and Development Center, The Ohio State University, Wooster, ²College of Wooster, Wooster, OH.

57 11:00

The effect of milk replacers containing 18% protein and various fat levels on growth and performance of male Holstein calves. D. F. Waterman^1*, T. Tomkins¹, J. Edwards¹ C. L. Davis², J. K. Drackley², J. L. Morrill³, and N. K. Keith⁴, ¹Milk Specialties Co., Dundee, IL, ²University of Illinois, Urbana, ³Kansas State University, Manhattan, and ⁴Keith Associates, Springfield, MO.

58 11:15

Prediction of calf starter intake in Jersey calves. J. D. Quigley, III, University of Tennessee, Knoxville.

59 11:30

he influence of milk replacer protein level and source on growth, performance, and health of male Holstein calves. D. F. Waterman^1*, T. Tomkins¹, J. Edwards¹, C. L. Davis², J. K. Drackley², and N. K. Keith³, ¹Milk Specialties Co., Dundee, IL, ²University of Illinois, Urbana, and ³Keith Associates, Springfield, MO.

60 11:45

Relative efficiencies of wither height and body weight increase from birth until first calving in Holstein cattle. A. F. Kertz, Purina Mills, Inc., St. Louis, MO.

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Poster Session (8:30 a.m. - 5:00 p.m.)
Tuesday morning, March 18
8:30 - 11:30 a.m. (Authors available)
Exhibit Hall, Room 206

No. Paper

61

Economics of corn supplementation in lactating dairy cows. T. J. Earleywine*, R. D. Shaver, and B. L. Jones, University of Wisconsin, Madison.

62

Utilization of further processed high moisture shelled corn by lactating dairy cows. T. R. Johnson*, and C. W. Koons, Purdue University, West Lafayette, IN.

63

Team approach to solving livestock problems on Indiana dairy farms. S. J. Kenyon*, T. R. Johnson, and R. E. Booker. Purdue University, West Lafayette, IN.

64

Monitoring performance through statistical process control in dairy herd management. A. De Vries*, B. J. Conlin, W. E. Marsh, J. K. Reneau, and M. L. Kinsel, University of Minnesota, St. Paul.

65

Effect of selenium and vitamin E administration prepartum on placental retention and early lactation responses in dairy cows. L. L. Larson, W. M. Chapman*, and R. J. Grant, University of Nebraska, Lincoln.

66

Comparison of effective fiber in fresh and refused dairy forage rations. G. A. Brown^1* and J. D. Spain², University of Missouri Extension and Outreach Service, Maysville¹ and Columbia².

67

Beef cow winter feeding economics worksheet: An Excel spreadsheet to balance wintering cow diets, and evaluate winter feeding economics. A. DiCostanzo*, and T. M. Salzer, University of Minnesota, St. Paul.

68

Decision support software for beef cattle crossbreeding. W. R. Lamberson*, J. A. Sterle, and W. O. Herring, Univ. of Missouri, Columbia.

69

Spreadsheet application for recommending and formulating diets for growing pigs. P. L. Spike*, P. J. Holden, R. C. Ewan, M. H. Jurgens, Iowa State University, Ames.

70

Development and implementation of a computerized ration balancer for sheep. C. Bandyk*, and C. Spaeth, Kansas State University, Manhattan.

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Tuesday morning, April 18
Room 204C
Chris R. Calkins, Chair
University of Nebraska

No. Time Paper

87 8:00

‡The development and evaluation of an oriental style dehydrated meat product – meat floss. C.T. Li* and H.W. Ockerman. The Ohio State University, Columbus.

88 8:15

‡Can PSE be prevented by injection of sodium bicarbonate into pork? R. L. Russell^1*, R. G. Kauffman¹, M. L. Greaser¹, C. A. Cornelius¹, C. E. Suckow¹,and R. Van Laack^{2 1}University of Wisconsin, Madison, ²University of Tennessee, Knoxville.

89 8:30

‡Trained and consumer taste panel evaluations of chops from boars, barrows, and gilts fed two different protein sequences and slaughtered at different weight endpoints. R. A. Nold*, J. R. Romans, W. J. Costello, J. A. Henson, and G. W. Libal, South Dakota State University, Brookings.

90 8:45

Evaluation of live weight and carcass component growth in finishing lambs. J. Lehmkuhler*¹, M. K. Neary², A. P. Schinckel², E. P. Berg², and M. E. Einstein², ¹University of Missouri, Columbia, ²Purdue University, West Lafayette, IN.

91 9:00

Identification of the beef primal cut which best represents carcass composition. D. J. Hanson,* C. R. Calkins, B. L. Gwartney, J. C. Forrest, and R. P. Lemenager, University of Nebraska, Lincoln and Purdue University, West Lafayette, IN.

92 9:15

Proportions of subcutaneous and intermuscular fat from beef carcasses fabricated into retail product trimmed to two fat levels. M.E. Dikeman^1*, L.V. Cundiff², K.E. Gregory², K.E. Kemp¹, and R.M. Koch³, ¹Kansas State University, Manhattan, ²U.S. Meat Animal Research Center, Clay Center, NE, ³University of Nebraska, Lincoln.

93 9:30

Influence of aging time, cooking temperature endpoint, and quality grade on beef tenderness. M. S. Roeber* and C. R. Calkins, University of Nebraska, Lincoln.

94 9:45

Improvement of pork loin tenderness using the hydrodyne process. B. M. O'Rourke,* C. R. Calkins, R. T. Rosario, J. S. Eastridge, M. B. Solomon, and J. B. Long, University of Nebraska, Lincoln, USDA, ARS, Meat Science Lab., Beltsville, MD, and Hydrodyne, Inc., San Juan, PR.

10:00 Break

95 10:30

Evaluation of muscle quality variation within the longissimus muscle. K. D. Ragland*, T. J. Baas, R. N. Goodwin, and L. L. Christian, Iowa State University, Ames and National Pork Producers Council, Des Moines, IA.

96 10:45

Variation in fat and lean measures between various genetic lines of swine. K. L. Adams*, K. D. Haydon, and A.J. Proeschel, Carl S. Akey Inc., Lewisburg, OH.

97 11:00

A nationwide audit of the composition of pork and poultry cuts at retail. D. R. Buege^1*, D. W. Henderson², S. H. Watters², L. L. Borchert¹, and E. J. Hentges³, ¹University of Wisconsin-Madison, ²University of Wisconsin-River Falls, ³National Pork Producers Council, Des Moines, IA.

98 11:15

Pork skin connective tissue gel utilization in reduced-fat bologna. W. N. Osburn*, R. W. Mandigo, and K. M. Eskridge, University of Nebraska, Lincoln.

99 11:30

Cholesterol content of fresh and cooked beef, pork and poultry retail products. F. C. Parrish, Jr.*, S. L. Nissen, J. A. Rathmacher, and R. D. Johnson, Iowa State University, Ames.

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NON-RUMINANT NUTRITION I

No. Paper

108

Comparative effects of acidifiers in complex diets fed to pigs days 1-35 post-weaning. R. A. Dvorak* and K. A. Jacques, Alltech, Inc., Nicholasville, KY.

109

The effect of ingredient processing and diet complexity on growth performance of the segregated early-weaned pig. K. Hongtrakul*, R. D. Goodband, K. C. Behnke, J. R. Bergstrom, I. H. Kim, J. A. Loughmiller,W. B. Nessmith, M. D. Tokach, and J. L. Nelssen, Kansas State University, Manhattan.

110

Efficacy of Rovimix^® Stay-C^® 25 as a vitamin C source for weanling pigs. B. Z. de Rodas*, C. V. Maxwell, M. E. Davis, S. Mandali, E. Broekman, and J. Chung, Oklahoma State University, Stillwater.

111

Effect of split weaning into NEW Nursery* on piglet growth and weight. B. A. Fisher^1*, D. Meiners², and R. A. Easter¹, ¹Universtiy of Illinois, Urbana, ²ICN, Inc., Colfax,IL.

112

Replacement value of Paul naked oat in weanling pig starter diets. D.G. Landblom^* and W.W. Poland, North Dakota State University, Dickinson Research and Extension Center.

113

Effect of carbohydrate source in phase I and phase II starter diets. I. B. Kim*, and G. L. Allee, University of Missouri, Columbia.

114

Potato chip scrap as a source of energy in the diet of nursery pigs. S. Rahnema*, M. A. Barrieklow, R. H. Ellis, and T. Meek, Ohio State University Agricultural Technical Institute, Wooster.

115

Evaluation of an experimental potato protein on starter pig performance. C. A. Kerr*, R. D. Goodband, M. D. Tokach, J. L. Nelssen, J. R. Bergstrom, W. B. Nessmith, and R. E. Musser, Kansas State University, Manhattan.

116

Enzyme supplementation of a spray dried poultry byproduct meal in diets for weanling pigs. T. L. Veum^1*, D. W. Bollinger¹, and A.K.M. A. Haque², ¹University of Missouri, Columbia, ²American Dehydrated Foods, Inc., Springfield, Mo.

117

Growth performance of weanling pigs fed diets supplemented with fish meal as a protein source. S. W. Kim* and R. A. Easter, University of Illinois, Urbana.

118

Efficacy of ultimate protein 1672 as a replacement of spray dried porcine plasma in prestarter diets of early weaned pigs. R. A. Dvorak^1*, T. P. Karnezos¹ , and S. Woodgate², ¹Alltech, Inc., Nicholasville, KY, ²Beacon Research Ltd., Clipston, Market Harborough, UK.

119

Comparison of protein ingredients in diets for weanling pigs. S. L. Woodgate*¹, G. Hoyos², and K.A. Jacques³, ¹Beacon Research Ltd., Clipston, Market Harborough, UK, ²Alltech Mexico, Mexico City, ³Alltech Inc. Nicholasville, KY.

120

Effect of age of introduction and level of soybean meal on performance of segregated early weaned pigs. P. R. O'Quinn*, J. L. Nelssen, M. D. Tokach, R. D. Goodband, and J. R. Bergstrom, Kansas State University, Manhattan.

121

Relative nutritional value of roller-dried versus spray-dried whey for pigs weaned at 11 or 20 days. T. D. Crenshaw, University of Wisconsin, Madison.

122

Determining the optimal isoleucine:lysine ratio for the SEW-reared, 10 to 20 kg pig. J. R. Bergstrom*, J. L. Nelssen, M. D. Tokach, and R. D. Goodband, Kansas State University, Manhattan.

123

Determining the optimal isoleucine:lysine ratio in diets for the segregated early-weaned pig weighing 5 to 8 kg. J. R. Bergstrom*, J. L. Nelssen, M. D. Tokach, and R. D. Goodband, Kansas State University, Manhattan.

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No. Time Paper

124 8:00

Effect of soy protein source and plasma protein in phase I diets on nursery pig performance. H. Liu*, I. B. Kim, K. J. Touchette, G. L. Allee, and M. D. Newcomb, University of Missouri, Columbia.

125 8:15

Apparent ileal digestibility of weanling pigs fed diets supplemented with fishmeal as a protein source. S. W. Kim*, H. H. Stein, and R. A. Easter, University of Illinois, Urbana.

126 8:30

The effect of increasing putrescine or spermidine on growth performance of the segregated early-weaned pig. J. R. Bergstrom*, J. L. Nelssen, M. D. Tokach, R. D. Goodband, and C. J. Samland, Kansas State University, Manhattan.

127 8:45

Effect of spray dried plasma (SDP) on fecal shedding of hemolytic Escheriscia coli (HEC) and rotavirus by pigs in a segregated early-weaned (SEW) environment. C. M. Cain*, and D. R. Zimmerman, Iowa State University, Ames.

128 9:00

‡Interactive effects of betaine (Betafin^®–BCR), crude protein, and net energy on growth, carcass traits, and serum metabolites of gilts. J. O. Matthews*, L. L. Southern, and T. D. Bidner, LSU Agricultural Center, Baton Rouge.

129 9:15

Multiple response criteria for assessing zinc status in weanling pigs fed diets containing sub-requirement levels of Zn from ZnO, Zn polysaccharide complex, and Zn methionine. T. M. Salzer^1*, G. C. Shurson¹, L. J. Johnston² , and D. D. Gallaher¹, University of Minnesota, ¹St. Paul., and ²Morris.

130 9:30

‡The impact of phase feeding pharmacological concentrations of zinc to early-weaned pigs. M. S. Carlson*, G. M. Hill and J. E. Link, Michigan State University, E. Lansing.

131 9:45

The effects of energy density and lysine:calorie ratio on growth performance of the 9 to 25 kg pig. J. W. Smith, II, M. D. Tokach, R. D. Goodband, J. L. Nelssen, W. B. Nessmith, Jr., J. R. Bergstrom, K. Hongtrakul, J. A. Loughmiller, and R. E. Musser. Kansas State University, Manhattan.

132 10:00

†Effects of Rhizopus ushikoshi on growth performance, serum IGF-1, energy and nitrogen balance in 10 kg pigs. T. M. Becker*, T. M. Salzer, J. M. McCalla, M. E. White, and G. C. Shurson, University of Minnesota, St. Paul.

133 10:15

Inability of 1,25-dihydroxycholecalciferol to improve P utilization in pigs. G. L. Cromwell*¹, R. L. Horst², J. P. Goff², S. D. Carter¹, M. D. Lindemann¹, and H. J. Monegue¹, ¹University of Kentucky, Lexington, and ²National Animal Disease Center, USDA/ARS, Ames, IA.

134 10:30

‡Effect of dietary L-Carnitine on growth, metabolism, and carcass characteristics of swine. K. Q. Owen^1*, H. Ji², C. V. Maxwell³, J. L. Nelssen¹, R. D. Goodband¹, M. D. Tokach¹, G. C. Tremblay², S. I., Koo¹, and S. A. Blum⁴, ¹Kansas State University, Manhattan, ²University of Rhode Island, Kingston,³Oklahoma State University, Stillwater,⁴Lonza Inc. Fair Lawn, NJ.

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135 8:00

Removing vitamin and trace mineral premixes from diets for finishing pigs (70 to 112 kg) did not affect growth performance, carcass characteristics, or meat quality. I. H. Kim*, J. D. Hancock, D. H. Kropf, R. H. Hines, J. H. Lee, J. S. Park, S. L. Johnston, and P. Sorrell, Kansas State University, Manhattan.

136 8:15

Influence of diet nutrient density on performance and carcass characteristics of growing and finishing swine reared during the summer or fall season. R. O. Myer*, and R. A. Bucklin, University of Florida, NFREC, Marianna.

137 8:30

Influence of dietary energy source on growth, body composition, and meat quality in pigs. T. S. Stahly*¹, N. H. Williams¹, M. J. Bertram¹, D. Cook¹, D. Gerrard², ¹Iowa State University, Ames, ²University of Missouri, Columbia.

138 8:45

Effects of grain source and physical feed form upon growth performance, carcass measurements, and gross stomach morphology in growing and finishing pigs. S. D. Crow*, G. L. Allee, and M. D. Newcomb, University of Missouri, Columbia.

139 9:00

Conditions during expander processing affect nutrient digestibility in finishing pigs fed corn- and sorghum-based diets. S. L. Traylor*, S. L. Johnston, K. C. Behnke, J. D. Hancock, P. Sorrell, F. J. Fairchild, and R. H. Hines, Kansas State University, Manhattan.

140 9:15

Conditions during expander processing affect nutrient digestibility in finishing pigs fed wheat- and wheat midds-based diets. S. L. Traylor*, S. L. Johnston, K. C. Behnke, J. D. Hancock, P. Sorrell, F. J. Fairchild, and R. H. Hines, Kansas State University, Manhattan.

9:30 Break

141 9:45

Conditions during expander processing affect nutrient digestibility in finishing pigs fed soybean meal and raw soybeans. S. L. Traylor, S. L. Johnston, K. C. Behnke, J. D. Hancock, J. R. Froetschner*, P. Sorrell, F. J. Fairchild, and R. H. Hines, Kansas State University, Manhattan.

142 10:00

Conditioning (conventional, long-term, and expander) effects on pellet quality and growth performance in finishing pigs. S. L. Johnston*, S. L. Traylor, R. H. Hines, J. D. Hancock, K. C. Behnke, S. P. Sorrell, and G. A. Kennedy, Kansas State University, Manhattan.

143 10:15

Mechanism of microbial phytase for improving phytate phosphorus availability in swine diets. D. F. Li*, C. Xiangrong, W. Yugong, and X. Chengting, China Agricultural University, Bejing, PRC.

144 10:30

Effects of phytase on P balance in finishing pigs fed low Ca, low P diets. J. L. Pierce*, W. A. Dozier III, G. L. Cromwell, and M. D. Lindemann, University of Kentucky, Lexington.

145 10:45

Efficacy of Natuphos^® phytase for finishing swine fed sorghum-based diets. P. R. O'Quinn* and D. A. Knabe, Texas A&M University, College Station.

146 11:00

Effects of magnesium silicate on growth performance, carcass characteristics, and stomach morphology in finishing pigs. S. P. Sorrell*, J. D. Hancock, S. L. Traylor, S. L. Johnston, I. H. Kim, R. H. Hines, and G. A. Kennedy, Kansas State University, Manhattan.

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No. Time Paper

198 8:00

Invited Paper - Regulation of gene expression in the corpus luteum by prostaglandin F₂alpha. M. C. Wiltbank*, and S.–J. Tsai, University of Wisconsin–Madison.

199 8:45

Invited Paper - Expression of steroidogenic and gonadotropin receptor genes in bovine follicles during ovarian follicular waves. H. A. Garverick, University of Missouri, Columbia.

200 9:30

Invited Paper - Expression of the angiogenic growth factors, basic fibroblast growth factor (bFGF) and vascular endothelial growth factor (VEGF), during follicular and luteal development. L. P. Reynolds*, and D. A. Redmer, North Dakota State University, Fargo.

10:15 Break

201 10:45

Activation of primordial follicles is not dependent upon the fetal stage at meiotic arrest. S. Meredith*, and D. Doolin, Lincoln University, Jefferson City, MO.

202 11:00

Changes in ovarian follicle populations during the follicular phase in gilts selected for an index of ovulation rate and prenatal survival. H. W. Yen*, R. K. Johnson, and D. R. Zimmerman, University of Nebraska, Lincoln.

203 11:15

Effects of passive immunization against inhibin on follicle-stimulating hormone concentrations and litter size in sows. J. E. Wheaton^1*, R. L. Meyer², R. H. Jones³, and A. J. Kramer², ¹University of Minnesota, St. Paul, ²Sioux Biochemical, Sioux Center, IA, ³NOBL Laboratories, Inc., Sioux Center, IA.

204 11:30

Prostaglandin F_{2alpha upregulates monocyte chemoattractant protein–1 mRNA expression in bovine and ovine corpora lutea. S. – J. Tsai*, and M. C. Wiltbank, University of Wisconsin, Madison.}

205 11:45

In situ hybridization for insulin-like growth factor (IGF)-I and -II mRNA, IGF binding protein (BP)-2 and gonadotropin receptor mRNA during the development of bovine dominant ovarian follicles. W. Yuan, B. Bao, H. A. Garverick, R. S. Youngquist, and M. C. Lucy*, University of Missouri, Columbia.

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No. Time Paper

206 10:15

†Interferon–tau variants expressed from ovine embryos during early pregnancy. G. L. Winkelman^*, A. D. Ealy, D. H. Keisler, and R. M. Roberts, University of Missouri, Columbia.

207 10:30

†Evidence for a uterine progesterone clock mechanism in gilts. R. J. Walter^1*, T. J. Safranski², and W. E. Trout², ¹University of Wisconsin-Platteville and the ²University of Missouri, Columbia.

208 10:45

The influence of the conceptus and early progesterone treatment on uterine protein secretion in swine. J. L. Vallet^1*, W. E. Trout², R. K. Christenson¹, and H. G. Klemcke¹, ¹USDA, ARS, RLH US Meat Animal Research Center, Clay Center, NE, ²University of Missouri, Columbia.

209 11:00

Mitogenic and anti-mitogenic activities of Meishan and Yorkshire uterine flushings from early pregnancy. S. P. Ford¹, W. A. Ricke², and L. P. Reynolds^2*, ¹Iowa State University, Ames, ²North Dakota State University, Fargo.

210 11:15

Association(s) among Meishan (M) and Yorkshire (Y) embryo growth and uterine flushings IGF-I and estradiol-17beta (E2beta) ). M. E. Wilson^1*, R. K. Christenson², and S. P. Ford¹, ¹Iowa State University, Ames, ²Roman L. Hruska U.S. Meat Animal Research Center, ARS, USDA, Clay Center, NE.

211 11:30

‡Effects of dietary chromium picolinate supplementation on glucose tolerance and ovarian and uterine function in gilts. M. R. Garcia*, M. D. Newcomb, and W. E. Trout, University of Missouri, Columbia.

212 11:45

†Gene and protein expression of the inter-alpha-trypsin inhibitor, bikunin, in the porcine conceptus and endometrium. M. J. Diederich*, J. V. Yelich, and R. D. Geisert, Oklahoma State University, Stillwater.

No. Time Paper

242 8:15

The influence of supplemental rumen stable methionine in the presence of excess lysine on growth and efficiency of beef calves. P. A. Ludden*, J. N. Carter, and M. S. Kerley., University of Missouri, Columbia.

243 8:30

Level and source of protein for growing steers limit fed a high-corn diet. R. H. Wessels, and E. C. Titgemeyer*, Kansas State University, Manhattan.

244 8:45

‡Metabolizable methionine and lysine requirements for growing cattle. M. J. Klemesrud*, T. J. Klopfenstein, and A. J. Lewis. University of Nebraska, Lincoln.

245 9:00

Wet corn gluten feed and corn steep liquor as sources of degradable intake protein. T. L. Scott*, T. J. Klopfenstein, D. H. Shain, and M. J. Klemesrud, University of Nebraska-Lincoln.

9:15 Break

246 9:30

Invited Paper - Assessment of the 1996 Beef Cattle NRC: Viewpoint from the feed industry. S. J. Bartle^*, and G. A. Ham, MoorMan Inc., Quincy, IL.

247 10:15

Invited Paper - Assessment of the 1996 Beef Cattle NRC; Evaluation of feedlot diets. F. N. Owens*, W. J. Hill, and D. R. Gill, Oklahoma State University, Stillwater.

248 11:00

Invited Paper - Assessment of the 1996 Beef Cattle NRC; Evaluation of forage-based diets. J. E. Moore^1*, M. B. Hall¹, W. E. Kunkle¹, D. Rochinotti¹, and R. C. Cochran², ¹University of Florida, Gainesville, ²Kansas State University, Manhattan.

11:45 Questions/Discussion

No. Time Paper

292 9:00

Teaching controversial issues in animal sciences and biotechnology: A discovery course for non-majors. D. J. Kesler, University of Illinois, Urbana.

293 9:15

Teaching an animal breeding course via interactive television. A. J. Seykora*, University of Minnesota, St. Paul.

294 9:30

Analysis of animal science home page usage. W. Erickson*, Michigan State University, E. Lansing.

295 9:45

Personal Herds: An integrated laboratory activity for livestock management courses. R. G. Dado, Southern Illinois University, Carbondale.

296 10:00

Objectives, methods and benefits of the Oklahoma State University livestock judging program. M. Z. Johnson*, Oklahoma State University, Stillwater.

10:15 Break

10:30

How employers would characterize the excellent teacher in Animal Science. R. J. Bruene. Iowa State University, Ames.

10:45

How an administrator would characterize the excellent teacher in Animal Science. E. D. Aberle. University of Nebraska, Lincoln.

11:00

How a teacher would characterize the excellent teacher in Animal Science. R. J. Lipsey. American Simmental Association, Bozeman, MT.

11:15

How a student would characterize the excellent teacher in Animal Science. Laura Kingdon. Iowa State University, Ames.

11:30

Comments, questions and answers. R. G. Kauffman. University of Wisconsin, Madison.

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No. Paper

7

Estimates of genetic correlations between serum FSH concentrations in males and measures of female reproduction in a crossbred Meishan population of pigs. G. A. Rohrer*, J. J. Ford, T. H. Wise, and L. D. Young, U.S. Meat Animal Research Center, Clay Center, NE.

8

Evaluation of a novel polymorphism and chromosomal localization of the porcine myogenin gene. E. A. Mendez*, C. W. Ernst, and M. F. Rothschild, Iowa State University, Ames.

9

Prolactin receptor maps to pig chromosome 16. A. L. Vincent*, L. Wang, C. K. Tuggle, and M. F. Rothschild, Iowa State University, Ames.

10

Influence of sire line and halothane genotype on growth performance, carcass characteristics, and meat quality. K. D. Miller*, M. Ellis, F.K. McKeith, and E.R. Wilson¹, University of Illinois at Urbana-Champaign and ¹Pig Improvement Company, Inc., USA.

11

Effects of breed-type on beef production efficiency to weaning. D. M. Marshall, South Dakota State University, Brookings.

12

A genetic marker associated with blood serum insulin-like growth factor-I (IGF-I) concentration and growth traits in Angus cattle. W. Ge*, M. E. Davis, and H. C. Hines, The Ohio State University, Columbus.

13

Reproductive performance and metabolic rate in mice selected for lean gain efficiency. A. S. Moura^1*, R. B. Holder, W. R. Lamberson, and D. Spiers, University of Missouri, Columbia.¹ Supported by CNPq, Brazil.

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No. Time Paper

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No. Time Paper

1:00

Managing odor for sustainable livestock production: An overview. R. A. Easter. University of Illinois, Urbana.

1:20

Biological identification and biological origin of key odor components in livestock odor. R. Mackie^1* and V. Varel². ¹University of Illinois, Urbana and ²USMARC, Clay Center, NE.

2:00

Psychological and sensory aspects of livestock odor: Implications to human health and well-being. S. Schiffman. Duke University Medical Center, Durham, NC.

2:40 Break

2:50

Management strategies to minimize odor's impact on animal performance. S. E. Curtis. The Pennsylvania State University, University Park.

3:30 Discussion

38 3:45

The effect of reducing dietary protein concentration on odor emission from pig buildings. C. E. Obrock*, P. S. Miller, A. J. Lewis, and R. K. Shoemaker. University of Nebraska, Lincoln.

39 4:00

Development of a chemical-based olfactometric method to evaluate odor remediation strategies at swine waste storage facilities. J. A. Zahn¹, Y. S. Do², A. A. DiSpirito², and J. L. Hatfield¹, ¹USDA-ARS, National Soil Tilth Laboratory, Ames, IA, ²Iowa State University, Ames.

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No. Paper

40

In vitro evaluation of porcine derived competitive exclusion cultures. R.C.S Anderson^1*, D. J. Nisbet², D. E. Corrier², and L. H. Stanker² , ¹Milk Specialties BioScience, Dundee, IL and ²USDA-ARS, Food Animal Protection Research Lab, College Station, TX.

41

Using real-time ultrasound during the feeding period to predict cattle composition. T. M. Delehant^*, G. R. Dahlke, M. P. Hoffman, J. C. Iiams, G. H. Rouse and D. E. Wilson, Iowa State University, Ames.

42

Feedlot performance and carcass traits of Boer goat crosses and Spanish male kids. S. J. Lewis^1*, B. J. May¹, G. R. Engdahl¹, D. F. Waldron², C. B. Scott¹, and D. R. Shelby¹, ¹Angelo State University, San Angelo, ²Texas A&M University System, San Angelo.

43

Comparison of norgestomet, pFSH, and PG600 on induction of estrus, ovulation and lambing in anestrous ewes. D. O. Kiesling*, A.N.V. Stewart, and H. A. Swartz, Lincoln University, Jefferson City, MO.

44

Measurement of minerals in fecal output of supplemented first-calf beef heifers. P. A. Olson^1*, D. R.Brink¹, D. T. Hickok¹, G. H.Deutscher², and D. C. Adams². ¹University of Nebraska, Lincoln, and ²West Central Research & Extension Center, North Platte,NE.

45

Effects of grazing system and early weaning on productivity and forage intake of fall-calving cows grazing tall-grass native prairie. H. T. Purvis II, K. S. Lusby, G. W. Horn, and C. J. Ackerman*, Oklahoma State University, Stillwater.

46

Body weight and reproductive response to step gain feeding for replacement beef heifers. J. B. Hall, A. DiCostanzo, B. Woodward, and D. Brown, University of Minnesota, St. Paul.

47

Induction of synchronized estrus and ovulation in prepubertal replacement gilts. R. V. Knox*, Illinois State University, Normal.

48

Bovine perineal odour changes through the estrus cycle. A.J.P. Lane¹, T. T. Mottram², J. M. Cooper³, J. R. Barker³ and D. C. Wathes^1*, ¹Royal Veterinary College, University of London, U.K., ²Silsoe Research Institute, Beds, U.K., & ³University of Glasgow, U.K.

49

Methods to monitor atmospheric dispersion of malodorous volatile organic compounds from swine production facilities. J. A. Zahn, and J. L. Hatfield*, National Soil Tilth Laboratory USDA-ARS, Ames, IA.

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No. Time Paper

71 1:00

Farmland's Supreme Beef Alliance: A Summary Report. S. L. Mills^1*, L. R. Corah¹, J. A. Unruh¹, D. D. Simms¹, J. K. Saunders², ¹Kansas State University, Manhattan, ²Integrated Management Information, Kansas City.

72 1:15

The Missouri Cow-Calf Workshop: An integrated educational approach to enhance production efficiency and profitability of Missouri's beef enterprise. D. J. Patterson*, W. O. Herring, M. S. Kerley, R. L. Larson, V. L. Pierce, and R. F. Randle, University of Missouri, Columbia.

73 1:30

An investigation of wheat middling storage and feeding practices and problems. D. A. Blasi*¹, G. W. Warmann¹, and K. C. Behnke², Kansas State University, Hutchinson¹, Manhattan².

74 1:45

Economic impact of preconditioning on feeder cattle through the weaning phase. J. M. Lynch¹, P. L. Houghton^1*, L. R. Corah², and G. L. Stokka², ¹Heartland Cattle Company, McCook, NE, ²Kansas State University, Manhattan.

75 2:00

NPPC Innovation Award Winner - Education
Farm specific modeling of growth, protein and fat accretion, and nutrient requirements of finishing pigs on commercial swine farms. J. W. Smith, II, M. D. Tokach, A. P. Schinckel, S. S. Dritz, J. L. Nelssen, and R. D. Goodband. Kansas State University, Manhattan and Purdue University, West Lafayette.

76 2:15

Single vs two- or three-diet sequences for finishing pigs. G. R. Parker, R. D. Coffey*, K. M. Laurant, G. L. Cromwell, M. D. Lindemann, and J. R. Randolph, University of Kentucky, Lexington.

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No. Time Paper

2:45

Introduction and overview of the topic. B. Carter. USDA-APHIS.

77 3:00

Johne's Disease: A hidden threat. J. R. Stabel, USDA, ARS, National Animal Disease Center, Ames, IA.

78 3:30

An update on bovine viral diarrhea virus. S. R. Bolin, USDA, ARS, National Animal Disease Center, Ames, Iowa.

79 4:00

Strategies for the control of Cryptosporidium parvum infection in calves. J. A. Harp, USDA, ARS, National Animal Disease Center, Ames, IA.

80 4:30

Transmissible spongiform encephalopathies. J. M. Miller, USDA, ARS, National Animal Disease Center, Ames, IA.

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No. Time Paper

2:45

Certified Angus beef program. Mick Colvin, Executive Director, Wooster, OH

3:00

Precision beef alliance. Rich Hall, Executive Director, Massena, IA.

3:15

Electronic cattle drive. Brad Gramm, Marketing Manger, Cow/Calf, Pfizer Animal Health, Exton, PA

.

3:30

U.S. premium beef. Bill Miller, Chief Marketing Officer, Manhattan, KS.

3:45

Farmland's supreme beef alliance. Jim Norwood, Chief Executive Officer, Kansas City, MO.

4:00

How should we market beef in the 21st century? Wayne Purcell, Director, Research Institute on Livestock Pricing, Blacksburg, VA.

4:45 Questions

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No. Paper

100

Assessment of fresh meat quality with color machine vision. F. J. Tan*, M. T. Morgan, J. C. Forrest, and D. E. Gerrard, Purdue University, West Lafayette, IN.

101

Sorting feedlot steers using ultrasound estimates of backfat at the 12th and 13th rib prior to the finishing phase. J. C. Iiams* and A. Trenkle, Iowa State University, Ames.

102

Differences in color, shear force, ether extract, andmoisture among 12 pork muscles. R. A. Nold*, J. R. Romans, W. J. Costello, and J. A. Henson, South Dakota State University, Brookings.

103

Molecular characterization and interaction studies of synemin, an intermediate filament protein. S. W. Sernett*, R. M. Bellin, T. W. Huiatt, and R. M. Robson, Iowa State University, Ames.

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No. Time Paper

104 3:30

Cloning of bovine obese gene coding sequence and obese receptor gene fragment. J. N. Morris*, J. E. Minton, and D. M. Grieger, Kansas State University, Manhattan.

105 3:45

NPPC Innovation Award Winner - Basic Research
Soybean genistein inhibits myoblast proliferation, differentiation, and myotube protein synthesis. S. Ji*, G. M. Willis, G. R. Frank, S. G. Cornelius, and M. E. Spurlock, Purina Mills, Inc., St. Louis, MO.

106 4:00

Effect of bovine somatotropin and Revalor-S^®; on tissue deposition rates in steers. J. A. Rathmacher*, F. J. Bonilla, C. Coates, D. C. Beitz, A. Trenkle, and S. L. Nissen, Iowa State University, Ames, IA.

107 4:15

Use of a simulation model to detect effects of bST on body composition of lactating Holstein cows. R. A. Moen*, B. A. Crooker, and W. J. Weber, University of Minnesota, St. Paul.

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No. Paper

147

Effect of Porzyme 9300 on growth performance and apparent digestibility in grower-finisher pigs fed diets containing 25% wheat midds. C. R. Risley^1*, and C. L. Wyatt², ¹Continental Grain Company, Chicago, IL and ²Finnfeeds International Ltd., Schaumburg, IL.

148

Ideal digestible lysine requirement of finishing high lean gain barrows. T. Brown–Brandl¹, J. T. Yen^2*, J. A., Nienaber², L. W. Turner¹, J. L. Usry³, ¹University of Kentucky, Lexington, ²USDA–ARS, USMARC, Clay Center, NE, ³Heartland Lysine Inc., Chicago, IL.

149

Synthetic amino acid and potassium additions to corn-basal diets fail to support maximum growth in finishing pigs. M. A. Taylor^*, and T. D. Crenshaw, University of Wisconsin, Madison.

150

Growth performance of high lean growing-finishing pigs fed low protein, amino acid supplemented diets. E. van Heugten* and T. C. Schell, Wayne Feed Division, Continental Grain Company, Chicago, IL.

151

Evaluation of dietary chromium picolinate supplementation for growing-finishing pigs in a commercial setting. M. D. Lindemann^1* and K. W. Purser², ¹University of Kentucky, Lexington and ²Prince Agri Products, Quincy IL.

152

Effect of chromium yeast on growth rate and meat quality parameters in finisher pigs. K. Kwun¹, M. Yoo¹, K. Sohn², M. Han³, S. Lee⁴, and K. A. Jacques^5*, ¹Yeon Am College, Korea. ²Purina Korea, ³Alltech Seoul, Korea, ⁴Yoonee, Seoul, Korea, ⁵Alltech Inc., Nicholasville, KY.

153

Ontogeny of kinetics of porcine jejunal brush border membrane-bound alkaline phosphatase, aminopeptidase N, and sucrase activities. M. Z. Fan, O. Adeola*, E. K. Asem, and D. King, Purdue University, West Lafaye

tte.

154

An in vitro prediction of phosphorus availability in plant feed ingredients. J. Liu*, D. R. Ledoux, and T. L. Veum, University of Missouri, Columbia.

155

Microbial phytase in low phosphorus corn–soybean meal diets for finishing swine:Growth performance and bone strength. T. L. Veum*, D. W. Bollinger, J. Liu, C. Tiemeyer, S. Krumpelman, and D. R. Ledoux, University of Missouri, Columbia.

156

Effect of dietary Ca:P ratios on apparent absorption of nutrients in different sections of the digestive tract of pigs fed low-phosphorus corn-soybean meal diets supplemented with microbial phytase. J. Liu*, D. W. Bollinger, D. R. Ledoux, and T. L. Veum, University of Missouri, Columbia.

157

Menhaden fish meal and spray dried animal plasma in phase 1 and 2 diets for pigs at weaning. T. L. Veum*, C. Tiemeyer, K. Jennings, J. Skaggs, J. Liu, D. W. Bollinger, and M. Ellersieck, University of Missouri, Columbia.

158

Effects of phytase in low Ca, low P diets on performance and bone strength of finishing pigs. G. L. Cromwell*, M. D. Lindemann, and H. J. Monegue, University of Kentucky, Lexington.

159

Effects of select menhaden fishmeal fed during lactation on sow and litter performance. R. E. Musser*, R. D. Goodband, M. D. Tokach, J. L. Nelssen, and S. S. Dritz, Kansas State University, Manhattan.

160

Descriptors of lactation weight loss, postweaning weight loss, and days to postweaning estrus from routine farrowing records. C.P.A. van de Ligt^1*, K. Ogunbameru², E. T. Kornegay², G. L. Cromwell¹, and M. D. Lindemann¹, ¹Univerity of Kentucky, Lexington and ²Virginia Polytechnic Institute & State University, Blacksburg.

161

Quantitative relationship between dietary linoleic intake and fat deposition in growing pigs. R. D. Boyd*, M. E. Johnston, K. K. Scheller, A. A. Sosnicki and E. R. Wilson, PIC USA, Franklin, KY.

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No. Time Paper

162 1:00

Sorghum-based distillers grains in diets for nursery pigs. B. W. Senne*, J. D. Hancock, I. Mavromichalis, S. L. Johnston, and J. R. Froetschner, Kansas State University, Manhattan.

163 1:15

Effects of naked oats on growth performance in early-weaned pigs. M. H. Whitney*, R. L. Harrold, and S. D. Carter, North Dakota State University, Fargo.

164 1:30

The effects of high oil corn and fat level on nursery pig growth performance. J. R. Bergstrom*, C. J. Samland, J. L. Nelssen, M. D. Tokach, and R. D. Goodband, Kansas State University, Manhattan.

165 1:45

Carry-over responses to an intestinal hydrolysate in weanling pig diets. D. R. Zimmerman, J. C. Sparks*, and C. M. Cain, Iowa State University, Ames.

166 2:00

Evaluating the feeding duration of a phase 1 nursery diet to pigs of two weaning weights. D. C. Mahan*, G. L. Cromwell, R. C. Ewan, C. R. Hamilton, and J. T. Yen, NCR-42 committee on swine nutrition

167 2:15

‡Defining the sources of variation in the energy content of barley. S. L. Fairbairn^1*, J. F. Patience¹, and H. L. Classen², ¹Prairie Swine Centre Inc., Saskatoon, Saskatchewan, Canada, ²University of Saskatchewan, Saskatoon, Saskatchewan, Canada.

2:30 Break

168 2:45

Vitamin stability in premixes containing metal specific amino acid trace mineral complexes or inorganic trace minerals. G. C. Shurson, T. M. Salzer, and D. D. Koehler*, University of Minnesota, St. Paul.

169 3:00

Effects of processing exotic sorghum genotypes for chicks. H. Cao*, J. D. Hancock, B. W. Senne, J. R. Froetschner, I. Mavromichalis, K. C. Behnke, and R. S. Beyer, Kansas State University, Manhattan.

170 3:15

Expander conditioning of complex nursery diets affects growth performance of weanling pigs . S. L. Johnston*, S. L. Traylor, R. H. Hines, J. D. Hancock, K. C. Behnke, and S. P. Sorrell, Kansas State University, Manhattan.

171 3:30

Diet complexity and conditioning method affect growth performance and nutrient digestibility in nursery pigs. S. L. Traylor*, S. L. Johnston, K. C. Behnke, J. D. Hancock, P. Sorrell, J. R. Froetschner, F. J. Fairchild, and R. H. Hines, Kansas State University, Manhattan.

172 3:45

The effects of conditioners (standard, long-term, and expander) on pellet quality and growth performance in nursery pigs. S. L. Johnston*, S. L. Traylor, R. H. Hines, J. D. Hancock, K. C. Behnke, and S. P. Sorrell, Kansas State University, Manhattan.

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No. Time Paper

173 1:00

Effect of lysine to metabolizable energy ratio (LYS/ME) on growth and protein deposition in boars (M), barrows (C), and gilts (G) from 59 to 86 kg live weight. E. L. Hansen*, G. W. Libal, C. R. Hamilton, and D. N. Peters, South Dakota State University, Brookings.

174 1:15

Crystalline lysine and threonine supplementation of grain sorghum-based, low protein diets for growing-finishing swine. R. O. Myer*, J. H. Brendemuhl, and D. W. Gorbet, University of Florida, NFREC, Marianna.

175 1:30

Dietary lysine requirement for optimal growth performance and carcass characteristics of 90 to 115 kg gilts. J. A. Loughmiller*, J. L. Nelssen, R. D. Goodband, M. D. Tokach, E. C. Titgemeyer, I. H. Kim, J. C. Woodworth, J. W. Smith II, J. R. Bergstrom, K. Hongtrakul, W. B. Nessmith Jr., and R. E. Musser. Kansas State University, Manhattan.

176 1:45

Influence of lysine regimen on growth performance and lean percentage of finishing pigs. S. S. Dritz*, R. D. Goodband, M. D. Tokach, and J. L. Nelssen, Kansas State University, Manhattan.

177 2:00

How hot is hot - the effect of maximum heat production on voluntary food intake in growing pigs ? N. S. .Ferguson, University of Natal, South Africa.

178 2:15

Environmental temperature and dietary lysine level on the performance of pair-fed pigs. F. Cisneros*, M. Ellis, and F. McKeith, University of Illinois, Urbana.

2:30 Break

179 2:45

Dietary methionine and total sulfur amino acid requirement for optimal growth performance and carcass characteristics in gilts from 73 to 104 kg. J. A. Loughmiller*, J. L. Nelssen, R. D. Goodband, M. D. Tokach, E. C. Titgemeyer, I. H. Kim, J. W. Smith II, J. R. Bergstrom, and W. B. Nessmith Jr. Kansas State University, Manhattan.

180 3:00

Optimum ratio of total sulfur amino acids to lysine for late finishing barrows and gilts. T. A. Knowles*, L. L. Southern, and T. D. Bidner, LSU Agricultural Center, Baton Rouge.

181 3:15

Interrelationships between betaine (Betafin-BCR) and level of feed intake on the performance parameters and carcass characteristics of growing-finishing pigs. A. Casarin^1*, M. Forat¹ and B. J. Zabaras-Krick,^{2 1}Instituto Internacional de Investigacion Animal, Queretaro, Mexico, ²Finnsugar Bioproducts, Inc., Schaumburg, IL.

182 3:30

Effect of betaine in finishing pig diets. D. D. Hall*, D. E. Orr, Jr., M. E. Wilson, R. L. Moser, and K. A. Whittington, United Feeds, Inc. Sheridan, IN.

183 3:45

The effect of tannin on amino acid transport across porcine intestinal brush border membrane. M. Z. Fan*, O. Adeola, and E. K. Asem, Purdue University, West Lafayette, IN.

184 4:00

The effect of tannic acid on threonine transport into duck intestinal brush border membrane vesicles. D. King*, M. Z. Fan, O. Adeola, and E. K. Asem, Purdue University, West Lafayette, IN.

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No. Time Paper

213 1:00

Invited Paper - The role of IGFs and their binding proteins in lactation. W.S. Cohick, Rutgers University, New Brunswick NJ.

214 1:45

Invited Paper - Role of the insulin-like growth factor (IGF) system in uterine function and placental development in ruminants. D. C. Wathes*, K. R. Stevenson, and T. S. Reynolds, Royal Veterinary College, University of London, UK.

215 2:30

Invited Paper - Controlling IGF activity by the modulation of IGFBP and receptor binding. R. H. McCusker*, University of Illinois, Urbana.

3:15 General Discussion

216 3:30

Long-term growth after hypophysial stalk transection of beef calves. L. L. Anderson^1*, D. L. Hard², A. H. Trenkle¹, and S.-J. Cho¹, ¹Iowa State University, Ames, ²Protiva, a unit of Monsanto Co., St. Louis, MO.

217 3:45

Increased expression of Pit-1 in somatolactotrophic in vitro systems failed to increase secretion of growth hormone and prolactin. M.G. Thomas¹, B. Liu², D. Munoz-Medellin², D. H. Keisler¹, and Z. D. Sharp², ¹University of Missouri, Columbia, ²University of Texas Institute of Biotechnology, San Antonio.

218 4:00

Somatotrophic gene expression in the neonatal pig. R. L. Matteri* and J. A. Carroll, Animal Physiology Research Unit, Agricultural Research Service, USDA, Columbia, MO.

219 4:15

Environmental temperature modulates the somatotrophic response to porcine growth hormone (pGH) in neonatal pigs. J. A. Carroll^1*, F. C. Buonomo², B. A. Becker¹, and R. L. Matteri¹, ¹Animal Physiology Research Unit, Agricultural Research Service, USDA, Columbia, MO, ²Monsanto Co., St. Louis, MO.

220 4:30

Effect of growth hormone and immune challenge on serum concentrations of insulin–like growth factor–1 and other components and adipose adipsin expression in pigs. M. E. Spurlock^1*, M. McComb², S. G. Cornelius¹, G. R. Frank¹, G. M. Willis¹, and A. L. Grant², ¹Purina Mills, Inc., St. Louis, MO, ²Purdue University, West Lafayette, IN.

221 4:45

‡Interactive effects of rearing environment, pig genotype and antibiotic therapy on growth, serum IGF-1 and acute phase proteins. M. A. McComb*, J. W. Frank, A. P. Schinckel, M. E. Spurlock, B. T. Richert, P. V. Malven, and A. L. Grant, Purdue University, West Lafayette, IN.

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No. Paper

222

Effects of culture media on oocyte maturation and developmental ability in pigs. W. H. Wang*, L. R. Abeydeera, and B. N. Day, University of Missouri-Columbia.

223

Effect of prostaglandin E2 during in vitro maturation of pig oocytes on in vitro fertilization and subsequent developmental competence. L. R. Abeydeera*, W. H. Wang, and B. N. Day, University of Missouri, Columbia.

224

Parthenogenetic activation of pig oocytes by myosin light chain kinase inhibition. K.M. Whitworth, and R.S. Prather*, University of Missouri, Columbia.

225

Effect of taurine on development of in vitro produced bovine embryos. J. N. Caamano*, and C. R. Youngs, Iowa State University, Ames.

226

Metabolic changes caused by short–term glucagon infusions in dairy cows. P. She*, A. H. Hippen, G. L. Lindberg, and J. W. Young, Iowa State University, Ames.

227

Prepartal energy intake affects severity of fatty liver and susceptibility to ketosis. A. R. Hippen*, P. She, G. L. Lindberg, D. C. Beitz, and J. W. Young, Iowa State University, Ames.

228

Reducing the incidence of bovine leukosis in dairy cattle. J. E. Shirley*, J. F. Smith, G. L. Stokka, R. R. Scoby, and T. Van Anne, Kansas State University, Manhatttan.

229

Characterization of winter teat end lesions of dairy cows. L. L. Timms*, M. Ackermann, and M. E. Kehrli, Iowa State University and National Animal Disease Center, Ames.

230

Evaluation of a novel persistent barrier teat dip for prevention of dry period mastitis. L. L. Timms*, and L. Allen, Iowa State University, Ames.

231

Endocrine and thermoregulatory responses to acute thermal exposures in six-month-old pigs reared in different neonatal environments. B. A. Becker¹, J. J. Klir^1*, R. L. Matteri¹, D. E. Spiers², M. Ellersiek², and M. L. Misfeldt², ¹Animal Physiology Unit, Agricultural Research Service, USDA, ²University of Missouri, Columbia.

232

Insulin-like growth factor (IGF)-I, IGF-II, and IGF binding protein (BP)-2 in liver and reproductive tissues of pregnant pigs treated with recombinant porcine somatotropin (rpST). J. A. Sterle*, J. T. Peacock., C. K. Boyd, T. C. Cantley, W. R. Lamberson, R. L. Matteri, and M. C. Lucy, Animal Physiology Unit, University of Missouri, Columbia.

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No. Time Paper

233 2:00

Boar libido affects pubertal development of gilts. Dwane R. Zimmerman*, T. McGargill, N. Rohda, M. Anderson, and D. Levis, University of Nebraska, Lincoln.

234 2:15

†Predicting optimal insemination time in sows. A. M. Boyle^*a and W. R. Lamberson^b, Lincoln Univ^a., Jefferson City, MO and Univ. of Missouri^b, Columbia.

235 2:30

‡Transcervical artificial insemination of ewes using frozen-thawed semen: effect of pregnant mare's serum gonadotropin (PMSG) on pregnancy rate (PR) out-of-season. M. Q. Husein*, M. T. Bailey, M. M. Ababneh, J. E. Romano, B. G. Crabo, and J. E. Wheaton, University of Minnesota, St. Paul.

236 2:45

An evaluation of endocrine response to dystocia in primiparous heifers and calves. T. G. Cappel, J. A. Quintal, and E. T. Clemens*, University of Nebraska, Lincoln.

237 3:00

†Temperature and season effects on proportions of circulating mononuclear cells in Holstein calves from birth through six weeks. C. E. Sorenson*, S. T. Franklin, D. C. Hammell, and P. D. Evenson, South Dakota State University, Brookings.

3:15 Break

238 3:30

Empirical estimates of power of the test for detecting treatment differences with binomial data. R. K. Splan^1*, H. D. Hafs², and L. D. Van Vleck³, ¹University of Nebraska, ²Rutgers University, and ³USMARC, Lincoln, NE.

239 3:45

Effect of day of estrous cycle on synchronization of ovulation using GnRH. J.L.M. Vasconcelos^1,2*, R. W. Silcox³, J. R. Pursley⁴, and M. C. Wiltbank¹, University of Wisconsin-Madison¹, FMVZ-UNESP-Botucatu-Brazil², Brigham Young University³, Michigan State University⁴.

240 4:00

†Effect of prostaglandin F₂alpha before Syncro-Mate B on estrus synchronization and corpus luteum function in beef heifers. R. N. Summers*, T. S. Dyson, T. L. Steckler, T. G. Nash, and D. J. Kesler, University of Illinois, Urbana.

241 4:15

Synchronized follicular growth and luteal regression before insemination of suckled beef cows. W. L. Forbes*, L. R. Corah, and J. S. Stevenson, Kansas State University, Manhattan.

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No. Paper

249

An enzyme-microbial feed product for finishing steers. B. A. Weichenthal*, I. G. Rush, and B. G. Van Pelt, University of Nebraska, Scottsbluff.

250

Conventional dry rolled corn diet versus byproduct and tallow finishing diets fed for ruminants. R. Lucena*, R. Cooper and T. J. Klopfenstein, University of Nebraska, Lincoln.

251

Effect of feed delivery management on yearling steer performance. S. J. Bierman*, and R. H. Pritchard, South Dakota State University, Brookings.

252

Forage characteristics associated with voluntary intake of nonsupplemented beef cattle. C. A. Bandyk*, R. C. Cochran, D. D. Simms, E. C. Titgemeyer, and G. L. Kuhl. Kansas State University, Manhattan.

253

Evaluation of non-digested neutral detergent fiber vs. neutral detergent fiber as predictors of forage dry matter intake of beef cows consuming either warm-season or cool-season grasses. E.E.D. Felton*, P.A. Ludden, and M.S. Kerley, University of Missouri, Columbia.

254

Small intestinal amino acid flow and disappearance in steers supplemented with increasing levels of poultry byproduct meal. D. W. Bohnert^1*, B. T. Larson¹, M. L. Bauer¹, A. F. Branco¹, D. L. Harmon¹, K. R. McLeod², and G. E. Mitchell¹, ¹University of Kentucky, Lexington, ²USDA, ARS, Beltsville, MD.

255

Hair meal as a protein source for ruminants. A. L. Arensdorf*, T. J. Klopfenstein, M. J. Klemesrud, and D. W. Herold, University of Nebraska, Lincoln.

256

Dried poultry waste as a degradable protein source in forage diets. D. J. Jordon*, T. J. Klopfenstein, and M. J. Klemesrud, University of Nebraska, Lincoln.

257

Effect of supplement type and amount on intake and digestion of protein- supplemented, low-quality, forage sorghum hay by beef steers. E. S. Vanzant, Kansas State University, Hays.

258

Effects of supplemental degradable intake protein on intake and digestibility of forage sorghum hay. C. P. Mathis*, R. C. Cochran, B. C. Woods, J. S. Heldt, K. C. Olson, E. C. Titgemeyer, and E. S. Vanzant. Kansas State University, Manhattan.

259

In Situ protein fractions and degradability of four diverse grasses. C. P. Mathis, I.E.O. Abdelgadir*, R. C. Cochran, J. S. Heldt, K. C. Olson, B. C. Woods, E. C. Titgemeyer, and E. S. Vanzant, Kansas State University, Manhattan.

260

Effects of varying supplemental starch and protein levels on ruminal fermentation and liquid passage of steers fed tallgrass prairie hay. K. C. Olson*, R. C. Cochran, T. J. Jones, E. S. Vanzant, and E. C. Titgemeyer, Kansas State University, Manhattan.

261

Effect of supplementation frequency and amount of nonprotein nitrogen in supplements on intake and digestion of low-quality forage. B. C. Woods*, R. C. Cochran, J. S. Heldt, C. P. Mathis, and K. C. Olson, Kansas State University, Manhattan.

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No. Paper

262

Ruminal degradation, amino acid composition, and estimated intestinal digestibilities of four protein supplements. M. S. Piepenbrink, and D. J. Schingoethe*, South Dakota State University, Brookings.

263

The effect of feeding a commercial yeast culture product to primiparous dairy cows. C. M. Luhman¹, D. D. Propst^1*, R. M. DeGregorio¹, B. E. Ziegler¹, and J. E. Garrett², ¹Land O'Lakes Research Farm, Webster City, IA and ²Diamond V Mills, Cedar Rapids, IA.

264

Feeding of rolled, raw sunflower or canola seeds to alter milk fatty acid composition toward producing a more unsaturated butter fat. C. M. Luhman*, R. M. DeGregorio, D. D. Propst, and B. E. Ziegler, Land O'Lakes Research Farm, Webster City, IA.

265

Effect of a feed additive in calf milk replacer on performance and scouring of calves. T. E. Johnson*, H. B. Perry, B. L. Miller, M. A. Fowler, and R. M. DeGregorio, Land O'Lakes Research Farm, Webster City, IA.

266

Corn silage maturity effects on intake and milk production by dairy cows. M. A. Bal*, J. G. Coors, and R. D. Shaver, University of Wisconsin, Madison.

267

Influence of nonfiber carbohydrate concentration on forage fiber digestion in vitro. J. A. Brown*, R. J. Grant, S. G. Haddad, and T. R. King, University of Nebraska, Lincoln.

268

Modifications of the in situ NDF N method. R. A. Mass*, G. P. Lardy, and T. J. Klopfenstein, University of Nebraska, Lincoln.

269

Estimation of particulate passage rate from the rumen: Interaction between method of marker introduction and parameter estimation. P. A. Ludden*, B. W. Hess, M. S. Kerley, and J. E. Williams, University of Missouri, Columbia.

270

Intestinal starch disappearance in steers abomasally infused with varying levels of protein. C.J. Richards^1*, A.F. Branco¹, D.W. Bohnert¹, D.L Harmon¹, G.B. Huntington¹, B. T. Larson¹, and K.R. McLeod², ¹University of Kentucky, Lexington, ²USDA, ARS, Beltsville, MD.

271

Utilization of propionibacteria to enhance rumen fermentation. V. Akay, and R. G. Dado*, Southern Illinois University, Carbondale.

272

Effect of yeast culture supplementation to alfalfa-grass hay diet on microbial fermentation in continuous culture of rumen contents. I. K. Yoon*, J. E. Garrett, and D. J. Cox, Diamond V Mills, Inc., Cedar Rapids, IA.

273

Efficacy of an ensiled combination of pulped foodwaste and ground waste newsprint as a potential feedstuff. P. M. Walker*, and S. A. Wertz, Illinois State University, Normal.

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No. Time Paper

274 1:15

Comparison of sulfuric acid with hydrochloric acid as a source of acidifying anions. J. P. Goff*, and R. L. Horst, USDA, ARS, National Animal Disease Center, Ames, IA.

275 1:30

Ruminal and total tract digestibilities in steers fed diets containing liquified or prilled saturated fatty acids. J. K.Drackley*, C. G. Aldrich, D. W. LaCount, and N. R. Merchen, University of Illinois, Urbana.

276 1:45

Effects of replacing forage neutral detergent fiber or dilution of nonfiber carbohydrates with dry brewers grains. R. S. Younker*, S. D. Winland, and J. L. Firkins, The Ohio State University, Columbus.

277 2:00

Invited Paper - Current understanding of effective fiber in dairy rations. M. S. Allen, Michigan State University, East Lansing.

2:15 Break

278 3:00

‡Influence of pregnancy on body and visceral organ mass in first calf beef heifers. A. N. Scheaffer*, J. S. Caton, L. P. Reynolds, D. A. Redmer, J. D. Kirsch, V. I. Burke, and R. K. Weis, North Dakota State University, Fargo.

279 3:15

†Onion byproduct for growing cattle. M. A. Dikeman*, J. S. Drouillard, G. L. Stokka, and A. S. Flake, Kansas State University, Manhattan.

280 3:30

Performance of calves on cornstalks. D. J. Jordon*, T. J. Klopfenstein, and M. J. Klemesrud, University of Nebraska, Lincoln.

281 3:45

Evaluation of sequential grazing of corn crop residues and stockpiled perennial forages to maintain beef cows during winter. M. J. Hersom* and J. R. Russell, Iowa State University, Ames.

282 4:00

Evaluation of the effects of carbohydrate source and level of degradable intake protein on intake and digestion of tallgrass-prairie hay by beef steers. J. S. Heldt*, R. C. Cochran, C. P. Mathis, B. C. Woods, K. C. Olson, E. C. Titgemeyer, T. G. Nagaraja, and E. S. Vanzant, Kansas State University, Manhattan.

283 4:15

Feeding potential of alternative feed grains in growing calf diets. W. W. Poland, D. G. Landblom and L. J. Tisor, Dickinson Research Extension Center, North Dakota State University.

20 9:30

Adjustment factors for number born alive (NBA) and litter weight (LWT) in swine.
M. S. Culbertson*, J. W. Mabry, J. K. Bertrand, and A. H. Nelson, University of Georgia, Athens.

21 9:45

Breed differences in fresh ham and loin quality. R. N. Goodwin*, E. P. Berg, L. L. Christian, R. K. Miller, and J. T. Keeton, National Pork Producers Council, Des Moines, IA; Iowa State University, Ames, IA; and Texas A&M University, College Station, TX.

22 10:00

Differences in fresh ham and loin quality associated with HAL genotype, sex and slaughter day. E. P. Berg*, R. N. Goodwin, L. L. Christian, R. K. Miller, and J. T. Keeton, National Pork Producers Council, Des Moines, IA; Iowa State University, Ames, IA; and Texas A&M University, College Station, TX.

23 10:15

Estimates variance components in lines of Tribolium castaneum selected for pupa weight. S. Koncagul*, and P. J. Berger, Iowa State University, Ames.

24 10:30

Threshold versus linear mixed models in estimating variance components for threshold traits. G. A. Abdel-Azim*, and P. J. Berger, Iowa State University, Ames.

25 10:45

Genetic and phenotypic correlations among 305-d milk yield, fertility, and survival of Holstein cows. C.M.B. Dematawewa, and P. J. Berger*, Iowa State University, Ames.

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81 9:15

Dairy herd evaluation techniques using DHIA records to analyze nutritional management programs. J. N. Spain, University of Missouri, Columbia.

82 9:35

Troubleshooting reproduction problems on dairy farms. L. L. Timms, Iowa State University, Ames.

83 9:55

Use of MUN in dairy herd evaluations. J. G. Linn*, A. D. Garcia, J. D. Olson, and W. G. Olson, University of Minnesota, St. Paul.

84 10:15

Evaluating milk production trends. M. F. Hutjens, University of Illinois, Urbana.

85 10:35

Utilizing somatic cell counts as a management tool. R. W. Mellenberger, Michigan State University, East Lansing.

86 10:55

Dairy herd culling strategies. J. F. Keown*, University of Nebraska, Lincoln.

11:15

State updates and dairy material sharing (time per state will be pro-rated based on number of states reporting).

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185 9:45

The effect of infusion of urea into the vena cava on feed intake of finishing gilts. H. Y. Chen*, A. J. Lewis, and P. S. Miller, University of Nebraska, Lincoln.

186 10:00

Effect of dietary fat versus starch on metabolic state and release of LH for lactating primiparous sows. M. L. Lorschy*, J. E. Pettigrew, A. F. Sower, M. E. White, G. D. Dial, L. J. Johnston, and J. E. Wheaton, University of Minnesota, St. Paul.

187 10:15

Influence of lactation feed intake on the relationship between lactation length and reproductive performance, circulating levels of glucose, insulin and LH in primiparous sows. Y. Koketsu*, G. D. Dial, J. E. Pettigrew, J. L. Xue, H. Yang, and T. Lucia, University of Minnesota, St. Paul.

188 10:30

Influence of crystalline lysine in lactating sow diets. K. J. Touchette*¹, G. L. Allee¹, M. D. Newcomb¹, J. C. Weigel², and R. D.Boyd³, ¹University of Missouri, Columbia, ²Archer Daniels Midland Co., Decatur, IL, ³Pig Improvement Co., Franklin, KY.

189 10:45

Interaction effects of gestation protein and feed intake levels from parity 1 to 5 for high-producing sows. D.C. Mahan, Ohio State University, Columbus.

190 11:00

Leucine kinetics and incorporation into milk casein in the lactating sow. L. Hoffman^1*, N. L. Trottier², B. J. Bequette³, T. T. Nielsen¹, and R. A. Easter¹, ¹University of Illinois, Urbana, ²Michigan State University, East Lansing, ³Rowett Institute, UK.

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191 9:30

Nutritional and hormonal regulation of insulin-like growth factor binding protein production in cultured porcine hepatocytes. X. F. Guan^1*, J. M. Brameld² N. L. Trottier¹, and P. J. Buttery², ¹Michigan State University, East Lansing, ²Nottingham University, UK.

192 9:45 Effects of porcine somatotropin on the protein requirement of pigs from 22 to 60 kg. W. A. Dozier III*, G. L. Cromwell, and M. D. Lindemann, University of Kentucky, Lexington.

193 10:00

The effects of added carnitine and(or) chromium nicotinate on growth and carcass characteristics. J. W. Smith, II*, J. L. Nelssen, R. D. Goodband, M. D. Tokach, B. T. Richert, K. Q. Owen, J. R. Bergstrom, W. B. Nessmith, Jr, and S. A. Blum¹. Kansas State University, Manhattan and ¹Lonza, Inc. Fair Lawn, NJ.

194 10:15

Development of protein and lipid deposition curves for barrows and gilts of a commercial pig genotype. M. L. Lorschy*¹, J. F. Patience¹,C.F.M. de Lange² and D. A. Gillis¹,
¹ Prairie Swine Centre, Inc., Saskatoon, SK. Canada; ²University of Guelph, Guelph, ON, Canada

195 10:30

Effect of low levels of chlortetracycline (CTC) in grower and finisher rations on gain variability and performance in lean genotype, high health swine. G. Gourley¹* and T. Wolff², ¹Swine Graphics Enterprises, Webster City, IA, ²Hoffmann-La Roche, St. Charles, MO.

196 10:45

Effect of dietary chromium addition on growth performance and carcass characteristics of growing and finishing pigs. S.D. Crow*, M. D. Newcomb, and P. Ruth, University of Missouri, Columbia.

197 11:00

Effect of dietary chromium additions along with varying protein levels on growth performance and carcass characteristics of growing and finishing pigs. S. D. Crow*, and M. D. Newcomb, University of Missouri, Columbia.

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9:30

Origins of the data in the NRC feed ingredient tables for swine. P. A. Thacker. University of Saskatchewa, Saskatoon, Canada.

10:00

Rapid tests for establishing the nutritional characteristics of feed ingredients. T. Van Kempen. Rhône Poulenc Animal Nutrition, Paris, France.

10:30

Considerations in the use of genetically modified plant material in swine nutrition. G. L. Allee. University of Missouri, Columbia.

11:00

Discussion

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284 9:00

Effects of weaning management systems on feedlot performance and carcass traits of steer calves. S. E. Myers*, D. B. Faulkner, F. A. Ireland, and D. F. Parrett, University of Illinois, Urbana.

285 9:15

Effects of step-wise increases in rate of gain on performance and carcass characteristics of steers. S. C. Loerch*, F. L. Fluharty, and H. V. Knoblich, Ohio Agric. Res. and Dev. Cntr., The Ohio State Univ., Wooster.

286 9:30

Effects of feed intake variation on acidosis and performance of finishing steers. R. J. Cooper*, and T. J. Klopfenstein, University of Nebraska, Lincoln.

287 9:45

Effects of feeding combinations of steam-flaked grain sorghum and corn on finishing cattle performance. G. L. Huck*, K. K. Kreikemeier, G. L. Kuhl, K. K. Bolsen, and T. P. Eck, Kansas State University, Manhattan.

288 10:00

Matching dietary protein to requirements: Performance and waste management in the feedlot. G. E. Erickson, and T.J. Klopfenstein, University of Nebraska, Lincoln.

289 10:15

Effects of protein supplementation and implanting strategy on carcass characteristics of feedlot steers. C. M. Zehnder* and A. DiCostanzo, University of Minnesota, St. Paul.

290 10:30

Comparison of nutrient digestibility, lamb performance and carcass composition in finishing lambs consuming diets varying in forage content. M. T. Shane*, M. E. Benson, and G. C. Good, Michigan State University, East Lansing.

291 10:45

Pork and beef meat and bone meals as sources of metabolizable protein. M. J. Klemesrud*, and T. J. Klopfenstein, University of Nebraska, Lincoln.

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12:15

Welcome and Introductions. Dr. Gary Cromwell. University of Kentucky, Lexington.

Opening Remarks. Tom Boeding, Cenex Land O'Lakes and Agri-Business Association of Iowa.

12:30

Past and Present Use of Antibiotics in Animal Food Production. Dr. Virgil Hays, Consultant, Professor Emeritus. University of Kentucky, Lexington.

1:00

Regulatory Issues. G.A. (Bert) Mitchell, D.V.M. Center for Veterinary Medicine, FDA.

1:30

Impact on Pharmaceutical Companies. Dr. Larry Pendlum. Lilly Research Labs and the Animal Health Institute.

2:00

Break

2:15

Feed Industry Role in VFD. David Bossman, President. American Feed Industry Association.

2:45

Veterinarian/Producer Interaction. Beth Lautner, D.V.M., M.S., National Pork Producers Council and John Waddell, D.V.M., M.B.A., Sutton Veterinary Clinic, P. C., Sutton, NE and the American Association of Swine Practitioners.

3:15

Panel Forum for Questions and Discussion. Panelists include above speakers and Mike Hannon, D.V.M., Ph.D., Roche Technical Veterinary Services, Minneapolis, MN (Dairy Specialist)

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