International Animal Agriculture and
Food Science Conference
Abstracts

J. Anim. Sci. Vol. 79, Suppl. 1
J. Dairy Sci. Vol. 84, Suppl. 1
Poult. Sci. Vol. 80, Suppl. 1
54th Annu. Rec. Meat Conf., Vol. II

TABLE OF CONTENTS

Tuesday, July 24, 2001

National Extension Education Workshop: Current and Future Impact of Issues Facing Animal Agriculture 1

Current Concepts of Animal Growth X: Metabolic and Cellular Regulation of Protein Deposition 3

Wednesday, July 25, 2001

ADSA Dairy Foods Graduate Student Paper Competition 5

ADSA Dairy Production Graduate Student Paper Competition 8

On-Farm Certification Programs 11

Conservation and Management of Animal Genetic Resources 11

Energy Nutrition of Ruminants 13

Meat Science in an International Marketplace 14

ASAS/ADSA Animal Behavior and Well Being 14

AMSA/ASAS Meat Science and Muscle Biology: Pork Quality 18

ASAS Nonruminant Nutrition: Health, Nutrition Interactions 21

ASAS/ADSA Breeding and Genetics: Breeding Strategies for Dairy Cattle 24

ASAS/ADSA Food Safety: Bacteria Detection 27

ASAS/ADSA Growth and Development: Muscle Growth and Development 28

ASAS/ADSA Physiology: Nutritional Regulation of Ovarian Function/Ovarian Biology 32

ASAS/ADSA Ruminant Nutrition: Feed Additives 34

PSA Environment and Management: Broilers 38

PSA Genetics 42

PSA Nutrition: Amino Acids 45

PSA Nutrition: Feed Ingredients I 48

PSA Processing and Products: Poultry Meat Safety and Eggs 52

Biotechnology, Animal Products, and the Food Industry 55

Genetics of Disease Resistance 56

Latest Development in On-Farm Ultrafiltration 57

Hot Topics in Meat Processing 58

Developing and Sustaining International Agriculture Experiences in Animal Science Curricula 59

ADSA Dairy Foods: Dairy Products—Chemistry and Physical Properties 59

ADSA Dairy Foods: Dairy Products—Chemistry and Physical Properties 61

AMSA/ASAS Meat Science and Muscle Biology: Beef Quality 62

ASAS Nonruminant Nutrition: Amino Acids, Vitamins, and Minerals in Finishing Pigs 65

ASAS/ADSA Breeding and Genetics: Genetic Parameters of Swine and Sheep 68

ASAS/ADSA Extension Education and PSA Extension and Instruction: Dairy, Swine, and Poultry 71

ASAS/ADSA Production, Management, and Environment: Temperature Effects, Production Schemes,
and Housing Influence 74

ASAS/ADSA Ruminant Nutrition: Ruminal Fermentation 77

ASAS/ADSA Ruminant Nutrition: Transition Cow 81

ASAS/ADSA Ruminant Nutrition: Water Quality and Minerals 85

PSA Environment and Management: Pullets, Hens, and Eggs 88

PSA Nutrition: Feed Regimens 90

PSA Physiology 93

Thursday, July 26, 2001

Nitrogen, Phosphorus, and Sulfur Interfaces Between Beef Cattle Production and the Environment 96

Companion Animal Biology as a Focal Point in the Animal Sciences 97

Future U.S. Swine Industry 98

Genetics of Carcass Merit and Meat Quality 99

Meat Thermoprocessing: Products and Processes 100, 484, 485

Molecular Manipulation to Influence Mammary Development and Function 101

Packaging Food and Dairy Products for Extended Shelf-Life 103

ADSA Dairy Foods: Dairy Products 104

ASAS Nonruminant Nutrition: Alternative Ingredients (Nursery & Specialty Grain) 106

ASAS/ADSA Breeding and Genetics: Quantitative Methods 109

ASAS/ADSA Food Safety: Microflora Survalence 112

ASAS/ADSA Physiology: General Physiology 115

ASAS/ADSA Ruminant Nutrition: Fat Nutrition/Feed Intake 119

ASAS/ADSA Teaching Undergraduate and Graduate Education and PSA Extension
and Instruction: Teaching I 123

PSA Environment and Management: Composite Group 126

PSA Immunology 129

PSA Nutrition: Phytase 132

PSA Pathology: Session I 135

PSA Processing and Products: Poultry Meat Quality 137

Animal Products in Today's Diet 139

Contemporary Issues in Sheep Production and Research 140

Animal Production and the Environment: Challenges and Solutions 141

Novel Genes and Gene Products 142

Preharvest and Postharvest Approaches to Modification of Milkfat 143

Role of Extracellular Matrix (ECM) in Growth and Development 143

ADSA Dairy Foods: Cheese 145

ASAS Nonruminant Nutrition: Weaning Pig Nutrient Requirements 147

ASAS/ADSA Animal Health: Dairy 150

ASAS/ADSA Forages and Pastures: Silages 153

ASAS/ADSA Ruminant Nutrition: Feedlot 157

ASAS/ADSA Ruminant Nutrition: Protein Nutrition 160

ASAS/ADSA Teaching Undergraduate and Graduate Education and PSA Extension
and Instruction: Teaching II 164

PSA Nutrition: Amino Acids and ME Enzymes 166

PSA Nutrition: Early Nutrition, Immunology, and G. I. Function 169

PSA Physiology: Reproduction 172

Friday, July 27, 2001

Reciprocation Sessions on Meat Science 175

Applications of Ultrasound in Livestock Production Systems 176

Bioethics in Animal Science 177

Mechanisms of Hormonal Signal Transduction 178

Profitable Meat Goat Production: The Interaction of Genotype and Management 178

ADSA Dairy Foods: Microbiology 180

ASAS Nonruminant Nutrition: Enzymes, Feed Additives, and Environment Management in Finishing Pigs 181

ASAS Swine Species 184

ASAS/ADSA Animal Health: Dairy, Beef Cattle, and Other Species 186

ASAS/ADSA Breeding and Genetics: QTL Detection and Mapping 190

ASAS/ADSA Growth and Development: Conjugated Linoleic Acid (CLA) in Milk Production,
Growth, and Health 193

ASAS/ADSA Growth and Development: Conjugated Linoleic Acid (CLA) in Milk Production,
Growth, and Health 195

ASAS/ADSA Ruminant Nutrition: Byproducts 195

ASAS/ADSA Ruminant Nutrition: Fiber 198

PSA Nutrition: Feed Ingredients II 201

AMSA Updates Session 204

Symposium on Concentrated Animal Feeding Operations Regarding Animal Behavior, Care, and Well Being 204

Safety of Our Meat Supply: Assessing the Risks and Methods of Control 206

Soybeans in Monogastric Nutrition 206

Twinning Beef Cows 207

ASAS Horse Species: Historical Aspects of Equine Research—How We Got Here and Where Are We Going? 208

ASAS Nonruminant Nutrition: Growth Management and Sow Nutrition; Aquaculture 210

ASAS/ADSA Breeding and Genetics: Genetics Evaluation and G-E Interactions: Dairy Cattle 214

ASAS/ADSA Extension Education: Beef 217

ASAS/ADSA Forages and Pastures: Grazing 220

ASAS/ADSA Growth and Development: Ruminant Growth and Mammary Development 223

ASAS/ADSA International Animal Agriculture 227

ASAS/ADSA Physiology: Male Physiology/Conceptus Development and Survival 228

ASAS/ADSA Production, Management, and Environment: Management and Production Practices;
Beef (Cow-Calf and Feedlot) and Sheep 231

ASAS/ADSA Ruminant Nutrition: Growing Cattle 234

PSA Pathology: Session II 236

Saturday, July 28, 2001

Ractopamine at One Year of Commercial Application 238

Teaching Techniques for Meat Judging Coaches 239

The Role of Forages in Enhancing Food Safety and Quality and a Clean Environment 241

ASAS/ADSA Breeding and Genetics: Genetic Parameters of Beef Cattle 242

ASAS/ADSA Breeding and Genetics: Genetic Parameters of Dairy Cattle 245

ASAS/ADSA Physiology: Estrous Synchronization 248

ASAS/ADSA Production, Management, and Environment: Waste Management for Beef and Swine;
Reproductive Practices and Measures 251

Beyond pH: Metabolic Factors Affecting Pork Quality 255

Poster Sessions

ASAS/ADSA Food Safety and PSA Pathology 256

PSA Environment and Management 260

ASAS/ADSA Production, Management, and Environment 265

ASAS/ADSA Animal Behavior and Well Being 277

ASAS/ADSA Ruminant Nutrition: Feed Additives, Rumen Fermentation, Minerals, and Transition Cows 280

PSA Processing and Products 296

PSA Immunology 300

ADSA Dairy Foods: Microbiology and Cheese Technology 303

ADSA Dairy Foods: Microbiology and Cheese Technology 308

ASAS/ADSA Milk Synthesis 310

ASAS/ADSA Extension Education and ASAS/ADSA Teaching Undergraduate and Graduate Education 314

ASAS/ADSA International Animal Agriculture 316

ASAS Nonruminant Nutrition: Specialty Grains and Amino Acids 318

PSA Nutrition: Amino Acids, Feed Ingredients, and Feed Processing 324

ASAS/ADSA Animal Health 330

ASAS/ADSA Breeding and Genetics: Gene Mapping, QTL, and Statistical Methods 337

PSA Genetics 343

ASAS/ADSA Forages and Pastures: Silages, Forage Quality, and Digestion 345

ASAS/ADSA Ruminant Nutrition: Fat, Protein, Intake, and Feedlot 350

ASAS/ADSA Ruminant Nutrition: Fat, Protein, Intake, and Feedlot 356

AMSA Graduate Student Research Posters (M.S. and Ph.D. Divisions) and
AMSA General Abstracts 366, 485

ADSA Dairy Foods: Products, Processing, Chemistry, Sensory 378

ASAS/ADSA Physiology: General Physiology 384

PSA Physiology: Cardiopulmonary, Immune, and Other Physiology 391

ASAS Nonruminant Nutrition: Vitamins, Minerals, and Energy 396

PSA Nutrition: Feed Regimens, Digestion, and Gut Morphology 401

ASAS/ADSA Breeding and Genetics: Genetic Parameters and Breeding Strategies 407

ASAS/ADSA Breeding and Genetics: Genetic Parameters and Breeding Strategies 409

ASAS/ADSA Ruminant Nutrition: By-Products, Fiber, and Silages 413

ASAS/ADSA Growth and Development 427

AMSA/ASAS Meat Science and Muscle Biology 436

ASAS Beef Species 444

ASAS Goat Species and ASAS Companion Animal Species 446

ASAS Sheep Species 451

ASAS Swine Species 452

ASAS Horse Species 456

ASAS/ADSA Forages and Pastures: Grazing and Alternative Forages 457

ASAS/ADSA Physiology: Reproductive Physiology 460

PSA Physiology: Reproduction and Endocrinology 468

ASAS Nonruminant Nutrition: Feed Ingredients and Enzymes 470

PSA Nutrition: Phytase and General Nutrition 476

ADSA Student Affiliate Division

Dairy Foods Undergraduate Paper Presentations 482

Dairy Production Undergraduate Paper Presentations 483

Original Research/Independent Study Undergraduate Paper Presentations 484