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Florida Dairy Extension

Florida Dairy Extension

Click on the links below to view and download documents from past Florida Ruminant Nutrition Symposia:

2024

34th Symposium, February 26 - 28, 2024

2024 RNS Brochure

Improving Energetic and Nitrogen Efficiency when Formulating for Amino Acids –a more Holistic Approach

Amino Acid Supply in the Ruminant

Histidine –a limiting amino acid for dairy cows

Protein Nutrition of Transition Cows and Amino Acid Balancing in Early Lactation

Prevention of Hypocalcemia and Associations with Health and Production

Uncovering the Effect of Immunoglobulin A on the Rumen Ecosystem

1 Impact of Heat Stress on Behavior of Dairy Cows

What a multibreed herd taught us about the influence of B. indicus genetics on dam reproduction and calf weaning weight

Feed Saved, a Novel Trait for Selection in Dairy Cattle

Importance of Animal Products In The Human Diet

Effects of Trace Mineral Supplementation on Fiber Digestion and Cow-Calf Production

Obtaining value from a feed/forage lab engagement

Control of milk protein synthesis by amino acids in dairy cows

Impact of Supplementing Fatty Acids on Performance and Digestibility in Dairy Cows

Reducing the carbon footprint of beef production: current alternatives to mitigate enteric methane emissions

THE RUMEN MICROBIOME AND LINKS WITH THE GENOME AND PRODUCTION IN DAIRY COWS

Management and Nutrition of Beef Bulls and Impacts on Fertility

Nutritional management to optimize cow-calf production in Southeast

2023

34th Symposium, February 20 - 22, 2023

2023 RNS Proceedings

2023 RNS Brochure

2023 RNS Sponsors

2022

33rd SYMPOSIUM, MAY 9 - MAY 11, 2022

2021

32nd SYMPOSIUM, MAY 12 - MAY 14, 2021

2020

31st Symposium, February 3 - 5, 2020

View Photo Gallery on Google

Transition Cows - How Fatty Acids Affect Immunity, Production and Health	Barry Bradford, Michigan State University
Fatty Acid Biology and Nutrition to Optimize Health and Production	Joseph McFadden and J. Rico, Cornell University
The Intersection of Dietary and Milk Fatty Acids - How Photoperiod and Variabili...	Kevin Harvatine, The Pennsylvania State University
Fatty Acids and Fertility – The Contributions of Dr. Charlie Staples	William Thatcher, University of Florida
Factors that Modify Rumen Fatty Acid Flow Versus Feed Input	Tom Jenkins, Clemson University
What Have We Learned About Fatty Acid Digestibility in Dairy Cattle?	Jackie Boerman, Purdue University
The Role of the Calf Microbiota on Performance and Health	Rodrigo Carvalho Bicalho, Cornell University
Nutritional Regulation of Gut Function and Development During the Pre-Weaning...	Amanda Fischer-Tlustos, Jolet van Niekerk and Michael Steele, University of Guelph
Dietary Strategies for the Cow Calf Herd: The Experience of the Brazilian Beef ...	Pedro Veiga Paulino, Cargill Animal Nutrition
Nutritional Strategies for Developing Replacement Bos Indicus-Influenced Beef He...	Philipe Moriel, University of Florida
Nutritional Control of Puberty in Beef Heifers	Rodolfo Cardoso, Sarah West, Tatiane Maia and Gary Williams,Texas A&M University
The Role of N Recycling in Improving Efficiency of N Utilization in Dairy Cattle	Diawakar Vyas and Felipe Amaro, University of Florida
Digestion and Nutrient Flow in Continuous Culture System and Animal Responses. D..	Virginia Branão, Marcos Marcondes and Antonio Faciola, University of Florida
Charles R. Staples Tribute
2020 Proceedings, 31st Annual Florida Ruminant Nutrition Symposium
2020 Bios of Speakers
2020 Sponsors
2020 Brochure

30th Symposium, February 4 - 6, 2019

Short chain fatty acids absorption and metabolism	Gregory Penner, University of Saskatchewan
Feeding management: dietary characteristics, feeding environment, and dairy cow feeding behavior	Rick Grant, William H. Miner Agricultural Research Institute
Monensin effects on beef cattle grazing warm-season perennial grasses	João Vendramini, University of Florida
Nutritional and management considerations to minimize stress and optimize production efficiency in cow-calf systems	Reinaldo Cooke, Texas A&M University
The use of milk fatty acids as an indication of energy balance in dairy cows	David Barbano, Cornell University
Lipid mobilization and inflammation during the transition period	Andres Contreras, Michigan State University
New insights on the role of essential fatty acids on reproduction in dairy cattle	Eduardo Ribeiro, University of Guelph
Technologies for improving fiber utilization by ruminants	Adegbola Adesogan, University of Florida
A microbiologist’s view on improving nutrient utilization in ruminants	T. G. Nagaraja, Kansas State University
2019 Proceedings, 30th Annual Florida Ruminant Nutrition Symposium
2019 Bios of speakers
2019 Sponsors
2019 Brochure

29th Symposium, February 5 - 7, 2018

Impact of Essential Amino Acid Balancing Postpartum on Lactation Performance by Dairy Cows	Louis Ferraretto, University of Florida
Gut Integrity During Periods of Stress and its Implications on Performance	Hugo Ramirez, Iowa State University
Amino Acid Balancing and Its Role on Metabolism, Inflammation, and Oxidative Stress: Future Molecular Implications	Johan Osorio, South Dakota State University
Setting Yourself Up for Success with Amino Acid Balancing	Jessica Tekippe, Ajinomoto Heartland
Prepartum Negative DCAD Diets – They’re Not Just for Milk Fever Anymore	José Santos, University of Florida
New Perspectives on Adapting Cattle to Finishing Diets Without Compromising Rumen Health	Josh McCann, University of Illinois
Communicating with the Public about Animal Agriculture Technology	Kevin Folta, University of Florida
Are There Financial Advantages of Grouping and Feeding Dairy Cows by Nutritional Need?	Victor Cabrera, University of Wisconsin
Trace Minerals and Vitamins for Dairy Cows	William Weiss, The Ohio State University
Fat Supplementation to the Periparturient Dairy Cow: Does Fatty Acid Profile Matter?	Adam Lock, Michigan State University
Dietary Effects on Ruminal Papillae During Periparturient Transition in Holstein Cows – Is Cow Performance Affected?	Anne Laarman, University of Idaho
Ruminal Acidosis – Much More Than pH	Ian Lean, Scibus, Camden, NSW, Australia
Use of Novel Feed Additives in Beef Cattle Production	Jon Schoonmaker, Purdue University
Canola Meal as a Protein Source for Lactating Dairy Cows	Antonio Faciola, University of Florida
2018 Proceedings, 29th Annual Florida Ruminant Nutrition Symposium
2018 Bios of speakers

28th Symposium, February 6 - 8, 2017

Choline and Methionine in Transition Cows: Separating Fact from Fiction	Ric Grummer, University of Wisconsin
Dietary Choline: The Story Beyond Fatty Liver	Charles Staples, University of Florida
Cows Need Both C16 and C18 Fatty Acids	Jim Loften, Milk Specialties Global
Effects of Supplementation of a Combination of Palmitic and Stearic Acids on Milk and Component Production: A Meta-Analysis	Matt Sellers, Milk Specialties Global
The Benefits of Getting More Potassium into Lactating Cows	Tom Jenkins, Clemson University
Pre- and Postpartum Nutritional Management to Optimize Energy Balance and Fertility in Dairy Cows	Felipe Cardoso, University of Illinois
Update on B-vitamin Nutrition for Lactating Dairy Cows	Christiane Girard, Agriculture and Agri-Food Canada
DCAD: It’s Not Just for Dry Cows	Rich Erdman, University of Maryland
Impact of Starch Content and Digestibility in Dairy Cattle Diets	Luiz Ferraretto, University of Florida
Predicting Forage Intake by Grazing Beef Cows - NRC Update	Stacey Gunter, USDA
The Role of Rumen Microbiome on Feed Efficiency of Grazing Cattle	Leluo Guan, University of Alberta
Nutritional Mitigation of Green House Gases	Diwakar Vyas, University of Florida
Economics and Effects of Accelerated Calf Growth Programs	Judd Heinrichs, Pennsylvania State University
Modeling the Effects of Liquid Intake and Weaning on Digestibility of Nutrients in Pre- and Post-weaned Dairy Calves	Jim Quigley, Cargill Animal Nutrition
The Role of the Small Intestine in Developmental Programming: Impact of Maternal Nutrition on the Dam and Offspring	Joel Caton, North Dakota State University
Can We Modify Future Beef Calf Performance by Changing Cow Nutrition During Gestation?	Philipe Moriel, University of Florida
2017 Proceedings, 28th Annual Florida Ruminant Nutrition Symposium
2017 Bios of speakers
2017 Sponsors

27th Symposium, February 15 - 17, 2016

Reducing the impact of heat stress on dry cows and fresh cows	Sha Tao, University of Georgia
Role of methionine and MHA in dry cow and fresh cow nutrition with emphasis on liver function	William Seymour, Novus International
Why should you feed a molasses-based liquid supplement when corn is cheap and milk price is low	Stephen Emanuele, Quality Liquid Feeds
Opportunities to improve efficiency of beef production	Monty Kerley, University of Missouri
Impact of maternal nutrition on calf performance	Amy Radunz, University of Wisconsin-River Falls
Feeding antioxidant vitamins to dairy cattle	Charles Staples, University of Florida
Managing milk fat depression	Kevin Harvatine, Penn State University
Fatty acid digestibility and impacts on response of dairy cows	Adam Lock, Michigan State University
Protein nutrition evaluation and application to growing and finishing cattle	Galen Erickson, University of Nebraska
Alternative feeds for beef cattle	Tara Felix, Penn State University
Control of hepatic gluconeogenesis during the transition period	Shawn Donkin, Purdue University
Novel concepts on calcium homeostasis during transition	Laura Hernandez, University of Wisconsin-Madison
Dietary manipulations and interventions to improve Ca metabolism during transition	José Santos, University of Florida
2016 Proceedings, 27th Annual Florida Ruminant Nutrition Symposium
2016 Ruminant Nutrition Symposium Photos
2016 Bios of speakers
2016 Sponsors

26th Symposium, February 2 - 4, 2015

Disease records for impactful decisions during the vital 90 days	David McClary, Elanco Animal Health
Immune dysfunction in periparturient dairy cows: Evidence, causes and ramifications	Marcus Kehrli, National Animal Disease Center
Economic consequences in the vital 90 days	Mike Overton, Elanco Animal Health
Importance of dietary amino acids and body condition for reproduction in dairy cows	Milo Wiltbank, University of Wisconsin
Mechanisms linking postpartum metabolism with reproduction in dairy cows	Matt Lucy, University of Missouri
Nutritional effects on beef heifer development, puberty and subsequent reproduction	Mike Day, The Ohio State University
Intensified pre-weaning calf feeding programs: Impacts on growth and behavior	Emily Miller-Cushon, University of Florida
Dietary strategies to improve calf health	Michael Ballou, Texas Tech University
Alternative sources of trace minerals for beef cattle	John Arthington, University of Florida
Copper and Se metabolism and supplemental strategies for grazing beef cattle	Terry Engle, Colorado State University
Supplementation strategies to reduce waste in beef cattle systems	Alfredo DiCostanzo, University of Minnesota
Feeding management and methods to reduce feed losses and improve dairy cow performance	Bill Stone, Diamond V
The food safety and modernization act and its impact on the feed industry	Jonathan Goodson, Evonik Industries
2015 Proceedings, 26th Annual Florida Ruminant Nutrition Symposium
2015 Ruminant Nutrition Symposium Photos
2015 Bios of speakers
2015 Sponsors

25th Symposium, February 4 - 5, 2014

The Relationship of Immunity and Reproduction in Dairy Cows	David Hurley, The University of Georgia
Evaluation of OmniGen-AF® in Lactating Heat-stressed Holstein Cows	Robert Collier, University of Arizona
Inflammatory Responses to Sub-acute Ruminal Acidosis	Tanya Gressley, University of Delaware
Etiology and Prevention of Fatty Liver and Ketosis in Dairy Cattle	Donald Beitz, Iowa State University
Protein Nutrition of Dairy Cattle-An Overview	Fred Owens, DuPont Pioneer
Vitamin D Metabolism in Dairy Cattle and Implications for Dietary Requirements	Corwin Nelson, University of Florida
Mechanisms of Volatile Fatty Acid Absorption and Metabolism and Maintenance of a Stable Rumen Environment	Gregory Penner, University of Saskatchewan
Strategies to Improve Rumen Microbial Efficiency	Tim Hackmann, University of Florida
Characteristics of Feed Efficiency and Use for Selection of Heifers and Cows	Phillip Lancaster, University of Florida
Use of Corn Co-products in Beef Cattle Diets	James McDonald, University of Nebraska
Forage Management and Methods to Improve Nutrient Intake in Grazing Cattle	Flavio Santos, University of Sao Paulo - Brazil
Amino Acid Requirements and Post-absorptive Metabolism in Cattle: Implications for Ration Formulation	Helene Lapierre, University of Calgary
Feed Efficiency and Sustainability of the Cattle Industry	Frank Mitloehner, University of California, Davis
2014 Proceedings, 25th Annual Florida Ruminant Nutrition Symposium
2014 Ruminat Nutrition Symposium Photos

24th Symposium, February 5-6, 2013

Considerations for Improving Feed Efficiency in Dairy Cattle	Lou Armentano,University of Wisconsin
Understanding the Impact of Subclinical Ketosis	Garrett Oetzel, University of Wisconsin-Madison
Choline-A Limiting Nutrient for Transition Dairy Cows	Ric Grummer,Belchem Corporation
Amino Acid Nutrition of Feedlot Calves	Richard Zinn,University of California-Davis
Preparing the Calf for Feedlot: The Role of Nutrition and Management in the Preweaning Period on Future Health and Performance	Robbi Pritchard, South Dakota State University
Enhancing Calf Immunity through Nutrition	Michael Ballou, Texas Tech University
Enhancing Immunity and Disease Resistance of Dairy Cows through Nutrition	Matt Waldron, University of Missouri
The Role of Specific Fatty Acids on Dairy Cattle Performance and Fertility	Jose Santos, University of Florida
Nutritional and Management Strategies to Mitigate Animal Greenhouse Gas Emissions	Alex Hristov, Penn State University
Alternatives to Corn for Dairy Rations	Randy Shaver, University of Wisconsin-Madison
The Importance of Feed Efficiency in the Cow Herd	Cliff Lamb, University of Florida
Feeding Dairy Cows in Today’s Economy	Bill Weiss, The Ohio State University
The Economics of Profit in California Dairies	Luis Rodriguez, Zinpro Corporation
2013 Proceedings, 24th Annual Florida Ruminant Nutrition Symposium
2013 Ruminant Nutrition Symposium Photos

23rd Symposium, January 31-February 1, 2012

The principles of balancing the diets for amino acids and their impact on the N utilization efficiency	Chuck Schwab, University of New Hampshire
Balancing for rumen degradable protein and post-ruminal requirementsfor lactating cattle using the CNCPS as a basis for evaluation	Mike VanAmburgh, Cornell University
Feeding low crude protein rations to dairy cows – What have we learned?	Larry Chase, Cornell University
Inflammation and nutrient metabolism in ruminants	Clint Krehbiel, Oklahoma State University
Impact of stressors on performance of weaned calves: An overview of our research on acute phase proteins and beef cattle performance	John Arthington, University of Florida
Quantifying heat stress and its impact on dairy cow metabolism and performance	Bob Collier, University of Arizona
The role of energy balance and metabolism on reproduction of dairy cows	Ron Butler, Cornell University
The role of liver metabolism during transition on postpartum health and performance	Shawn Donkin, Purdue University
Importance of N recycling to beef cattle grazing low-protein forages	Evan Titgemeyer, Kansas State University
Nutritional practices to reduce environmental impact of grazing beef cattle	Andy Cole, USDA Bushland TX
A microbiologist’s view on improving nutrient utilization in ruminants	T. G. Nagaraja, Kansas State University
Forage digestibility: the intersection of cell wall lignification and plant tissue anatomy	Hans Jung, USDA St. Paul MN
Role of K on rumen fermentation and milk fat synthesis	Tom Jenkins, Clemson University
2012 Proceedings, 23rd Annual Florida Ruminant Nutrition Symposium

22nd Symposium, February 1-2, 2011

Increasing Efficiency of Nutrient Use to Enhance Profit and Environmental Stewardship	Michael J. VandeHaar, Michigan State University
Measuring Feed Efficiency - Why & How on the Back of a Napkin	Robert C. Fry, Atlantic Dairy Management Services
Nutritional Implications of Altering the Dry Period Length	Ric R. Grummer, Balchem Corp.
Revisiting Negative Dietary Cation-Anion Difference Balancing forPrepartum Cows and its Impact on Hypocalcaemia and Performance	Elliot Block, Arm & Hammer Animal Nutrition
Balancing the Acute Phase Response during the Transition Period: Impacts on Performance and Health	Barry J. Bradford, Kansas State University
Liquid Feeds and Sugars in Diets for Dairy Cattle	Jeffrey L. Firkins, The Ohio State University
Manipulation of the Dietary N-Fractions to Improve Ruminal Microbial Synthesis and Yield	Glen A. Broderick, Agricultural Research Service, USDA
Mechanisms of Acid Absorption in the Rumen and Impacts on Subacute Rumen Acidosis	Gregory B. Penner, University of Saskatchewan
The Impact of Improving NDF Digestibility of Corn Silage on Dairy Cow Performance	Masahito Oba, University of Alberta
Manipulation of the Rumen Microbial Environment to Improve Performance of Beef Cattle	Nicolas DiLorenzo, University of Florida
Maternal Plane of Nutrition and Impact on the Offspring	J. S. Caton, North Dakota State University
Strategic Supplementation of Beef Cows to Correct for Nutritional Imbalances	Matt Hersom, University of Florida
2011 Proceedings, 22nd Annual Florida Ruminant Nutrition Symposium

21st Symposium, February 2-3, 2010

Impact of Selection for Residual Feed Intake on Forage Intake by Beef Cows and Feed Efficiency of Progeny	Monty Kerley, University of Missouri
Feeding Behavior, Feed Selection and Risk of Digestive Problems in Dairy Cattle	Trevor DeVries, University of Guelph
Cattle Behavior and Implications to Performance and Health	John Huxley, University of Nottingham
Feeding Transgenic Feedstuffs to Cattle	Gary Hartnell, Monsanto
Feeding Low Starch Diets to Lactating Dairy Cows	Heather Dann, Miner Agricultura Research Institute
Forage Evaluation and Quality in Florida	João Vendramini, University of Florida
Nutritional Strategies for Replacement Dairy Heifers	Jud Heinrichs, Pennsylvania State University
Efficiency of Cattle Production and its Carbon Footprint	Dale Bauman, Cornell University
Essential of Fatty Acids in Ruminant Diets	Don Palmquist, The Ohio State University
Chromium Supplementation in Cattle Diets	Jerry Spears, North Carolina State University
Supplemental Antioxidants to Enhance Fertility in Cattle	Peter Hansen, University of Florida
Complete Proceedings

20th Symposium, February 10-11, 2009

Managing Milk Fat Depression: Interactions of Ionophores, Fat Supplements, and other Risk Factors	Tom Jenkins, Clemson University
Using Dietary Additives to Manipulate Rumen Fermentation and Improve Nutrient Utilization and Animal Performance	Gbola Adesogan, University of Florida
The Strategic Use of Ruminally Protected Amino Acids in Dairy Nutrition	Robert Patton, Nittany Dairy Nutrition Inc
Relationship Between Nutrition and Reproduction in Beef Cows	Cliff Lamb, University of Florida
Influences of Fatty Acid Supplementation on Reproduction of Grazing Beef Cows	Bret Hess, University of Wyoming
Feeding n-6 and n-3 Fatty Acids to Dairy Cows: Effects on Immunity, Fertility and Lactation	Flavio Silvestre, University of Florida
Early Life Management and Long-Term Productivity of Dairy Calves	Mike Van Amburgh, Cornell University
Nutritional Regulation of Precocious Puberty in Beef Heifers	Michael Day, The Ohio State University
Feed-Restriction Programs for Growing Heifers	Al Kertz, Andhil Nutrition
Nutritional Control of Feed Intake in Dairy Cattle	Mike Allen, Michigan State University
Feeding Rumininally-Protected Choline to Transition Dairy Cows	Jose Santos, University of Florida
Complete Proceedings

19th Symposium, January 29-30, 2008

Glycerol and Other Energy Sources for Metabolism and Production of Transition Dairy Cows	Arnold R. Hippen, South Dakota State University
The Effects of Heat Stress on Production, Metabolism and Energetics of Lactating and Growing Cattle	Lance Baumgard, University of Arizona
Bringing Feed Efficiency Technologies to the Beef Industry: Challenges and Opportunities	Gordon Carstens, Texas A&M University
Can Nutrient Synchrony Affect Performance of Forage-Fed Cattle?	Matt Hersom, University of Florida
Corn Silage – Facts, Fantasies and the Future	Fred Owens, Pioneer Hi-Bred International
Recent Advances in Bacterial Silage Inoculate Technology	Adegbola Adesogan, University of Florida
Gossypol Intake from Cottonseed Feedstuffs – A Performance Concern for Ruminants?	José Santos, University of Florida
Utilization of Whole Cottonseed and Hay in Beef Cow Diets	Gary Hill, University of Georgia
Alternative Feeds for Beef Cattle During Periods of Low Forage Availability	Matt Poore, North Carolina State University
Influence of Dietary Plasma Proteins on Supporting Animal Immunity Systems	Joy Campbell, APC Inc.
Immune System Responses to Diseases/Disorders in the Dairy Animal and Potential Effects of Essential Fatty Acids	Charles Staples, University of Florida

18th Symposium, January 30-31, 2007

Dietary Energy Density for the Close-Up Dry Cow – Postpartum Performance	Gabriella Varga, The Pennsylvania State University
Ruminal Acidosis in Dairy Cows: Balancing Physically Effective Fiber With Starch Availability	Karen Beauchemin, Agric.and Agri-Food Canada
Nutritional Strategies to Enhance Immunity During the Transition Period of Dairy Cows	Matt Waldron, University of Vermont
Vitamins and Minerals Functioning as Antioxidants with Supplementation Considerations	Lee McDowell, University of Florida
Effect of Selenium Source on Production, Reproduction, and Immunity of Lactating Dairy Cows	William Thatcher, University of Florida
Effects of Pre-shipping Management on the Performance of Florida Beef Calves in the Receiving Feedlot	John Arthington, University of Florida
Strategic Addition of Dietary Fibrolytic Enzymes for Improved Performance of Lactating Dairy Cows	Gbola Adesogan, University of Florida
Use of Milk or Blood Urea Nitrogen to Identify Feed Management Inefficiencies and Estimate Nitrogen Excretion by Dairy Cattle and Other Animals	Rick Kohn, University of Maryland
Strategies, Benefits, and Challenges of Feeding Ethanol Byproducts to Dairy and Beef Cattle	David Schingoethe, South Dakota State University
Nutrition and Management During Gestation: Impacts on Lifelong Performance	Joel Caton, North Dakota State University
Do Grazing Beef Cows Benefit From Supplemental Anionic Salts?	Matt Hersom, University of Florida

17th Symposium, February 1-2, 2006

Strategic Manipulation of RDP and RUP Supply to Meet the Protein Needs of Beef Cows	Alfredo DiCostanzo, University of Minnesota
Improving Nitrogen Utilization in the Rumen of the Lactating Dairy Cow	Glen Broderick, U.S. Dairy Forage Res. Center
The Role of Amino Acid Nutrition in Milk Yield and Milk Components	Brian Bequette, University of Maryland
Milking Them for All They’re Worth	David Zartman, The Ohio State University
Encapsulating Nutrients to Improve Nitrogen Utilization and Reproduction	Steven Emanuele, Balchem Corporation
A Factorial Approach to Energy Supplementation for Grazing Beef Cattle	Matt Hersom, University of Florida
Trace Mineral Nutrition and Immune Competence in Cattle	John Arthington, University of Florida
Nutritional and Metabolic Effects on the Immune Competence of the Periparturient Cow	Jesse Goff, National Animal Disease Center
Uses and Abuses of Near Infrared Reflectance Spectroscopy for Feed Analyses	Dan Undersander, University of Wisconsin
Factors Affecting Corn Silage Quality in Hot and Humid Climates	Gbola Adesogan, University of Florida
Milk Fat Depression in Dairy Cows - Influence of Supplemental Fats	Charles Staples, University of Florida

16th Symposium, February 1-2, 2005

Formulating Diets with Optimum Cation-Anion Difference for Lactating Dairy Cows	David Beede, Michigan State University
Bioavailability and Antagonists of Trace Minerals in Ruminant Metabolism	David Ledoux, Marcia Shannon, U. of Missouri
Selenium Toxicity for Ruminants - Paranoia or Precaution	L. R. McDowell et al., University of Florida
Effect of Rumensin on Performance Parameters of Lactating Dairy Cows Nine-trial Registration Summary	Elvin Thomas et al., Elanco Animal Health
Phase-Feeding the Beef Herd for Improved Feed Utilization	Matt Hersom, University of Florida
Predicting Forage Intake by Grazing Ruminants	Sam Coleman, USDA-ARS-STARS, Brooksville
Improving Forage Quality and Animal Performance with Fibrolytic Enzymes	A. T. Adesogan, University of Florida
Randomness Rules: Living with Variation in the Nutrient Composition of Concentrate Feeds	William Weiss, The Ohio State University
Molds and Mycotoxins in Feedstuffs - Prevention and Treatment	L. W. Whitlow, W. M. Hagler, Jr., NC State U.
Glucose Balance in Cattle	C. K. Reynolds, The Ohio State University
Fat and Fat-Soluble Vitamin Supplementation for Improving Reproduction of the Dairy Cow	C. R. Staples et al., University of Florida

15th Symposium, January 22-23, 2004

Terra Incognita: Updates on Feeding Nonfiber Carbohydrates to Dairy Cows (Yes, It Does Matter)	Mary Beth Hall, University of Florida
Amino Acid Balancing in the Context of Metabolizable and Rumen Undegradable Protein Requirements	Charles Schwab, University of New Hampshire
Residual Feed Intake and Feed Efficiency: Differences and Implications	Erasmus Okine, University of Alberta
Residual Feed Intake: Animal Performance, Carcass Quality, and Body Composition	Erasmus Okine, University of Alberta
Challenges of Meeting Cow Demands for Omega Fatty Acids	Thomas Jenkins, Clemson University
Optimizing the Transition Cow Management System on Commercial Dairy Farms	Thomas Overton, Cornell University
Recent Insights into Ruminant Immune Function: Effects of Stress and of Immunostimulatory Feed Products	Neil Forsberg, Oregon State University
Bargains and Rip-Offs: Assessing the Economic Value of Feedstuffs Using Market Prices	Normand St-Pierre, The Ohio State University
Managing Phosphorus, Cattle, and the Land: Results of the Buck Island Project	John Arthington, University of Florida

14th Symposium, January 16-17, 2003

Impact of Vitreousness, Processing, and Chop Length on the Utilization of Corn Silage by Dairy Cows	Randy Shaver
Cow Comfort and New Barns: the Latest in Florida	Dave Bray, Roger Natzke, Ray Buckland
The Forage Analysis Laboratory – Partner or Antagonist?	Ralph Ward
What You Feed vs. What You Get: Feed Efficiency as An Evaluation Tool	Mary Beth Hall
Hello to Trans-Fatty Acids and Good-Bye to Fatty Liver in Dairy Cattle	Lokenga Badinga, Kurt Selberg, Charles Staples
Copper Antagonists in Cattle Nutrition	John Arthington
Trace Mineral Ingredients: Manufacturing, Quality Concerns, Bioavailability, and Formulation	Tim Costigan
Monitoring Postpartum Health in Dairy Cows	Carlos Risco
Techniques to Reduce Free-Choice Liquid Supplement Consumption in Beef Cattle	Paul Davis, William Kunkle, and John Arthington
Sponsors

13th Symposium, January 10-11, 2002

Overview and Application of the 2001 NRC Energy System	William Weiss
Relative Forage Quality: An Alternative to Relative Feed Value And Quality Index	John Moore
What are Feeds Worth?: A Critical Evaluation of Nutritive Value Methods	Adegbola Adesogan
Developing New Specialty Grains for Ruminants	Fred Owens
Feeding Fatty Acids For Fertility	Charles Staples
Selenium Availability and Methods of Selenium Supplementation For Grazing Ruminants	Lee McDowell
Mineral Supplementation in the Grazing Cow Herd	John Arthington
Overview of Mineral Nutrition in Cattle: The Dairy and Beef NRC	Jerry Spears
Vitamin Stability in Premixes and Feed	Mike Coelho
Working With Sugars and Molasses	Mary Beth Hall

12th Symposium, January 11-12, 2001

Program
Use of Economical Fat Sources in Molasses-Based Supplements Fed to Grazing Beef Cattle in South Florida	Findlay Pate
Conjugated Linoleic Acid: More Than an Anticancer Factor	Lokenga Badinga
Direct-Fed Microbials For Dairy Cattle	Limin Kung
Enzymes For Lactating Dairy Cows: New Theories and Applications	Limin Kung
How Should We Formulate For Non-NDF Carbohydrates?	Mary Beth Hall
Effect of Using High Molybdenum Biosolids (Sludge) as Fertilizers on Copper Status of Beef Cattle	Lee McDowell
Biotin, Hoof Health and Milk Production in Dairy Cows	William Seymour
Technologies For Delivering Passive Immunity to Newborn Calves	John Arthington
Factors Affecting Calf Livability	Danny Simms
Harvesting, Storing and Feeding Forages as Round Bale Silage	William Kunkle

11th Symposium, January 13-14, 2000

Program
Societal and Legislative Challenges for Animal Agriculture	R.G. Zimbelman
Unsaturated Fats: the Rumen and Beyond	C.R. Staples, S.L. Boken, W.W. Thatcher
Ration Management: Impacts and Consequences on Performance	S. Stokes, G. Bethard
Effects of Carbohydrate Source, Feed Additives and Feeding Systems on Response to Supplements for Beef Cattle Fed Forage Based Diets	W.E. Kunkle, J.T. Moore, et al.
Planning and Conducting Successful Field Trials to Test Product Effects on Animal Performance	H.H. Van Horn, C.J. Wilcox, et al.
Effect of Nitrogen Fertilization and Harvest Date on Forage Quality Factors and Protein Fractions	C.R. Johnson, B.A. Reiling, et al.
Defining Mineral Requirements of the Dairy Cow: Why One Size Does Not Fit All	J.P. Goff
Optimizing Immune Competence Through Nutrition	J.D. Arthington
Physically Effective NDF and Its Use in Formulating Dairy Rations	D.R. Mertens
High Starch Rations for Ruminant Production	G.B. Huntington
Cotton Seed Hulls: Working With a Novel Fiber Source	M.B. Hall, A. Akinydoe

10th Symposium, January 14-15, 1999

Program
Commercialization of Biotechnology in Agriculture	C.A. Baile
Feed Ingredient Factors Influencing Intestinal Amino Acid Supply in Ruminants	N. Merchen, F. Orias
Is Methionine First Limiting Amino Acid for Growing Cattle Fed Forages?	W.E. Kunkle, D.I. Hopkins
Managing Energy Reserves to Optimize Reproduction	R.P. Lemenager, D.D. Buskirk
Options in Managing Manure Phosphorus	H.H. Van Horn
Dietary Phosphorus, Phosphorus Excretion, and Environmental Concerns	H.R. Conrad
Mycotoxins in Silage: a Silent Loss in Profit	A. Gotlieb
Corn Silage for the South: Management and New Technology	D.L. Wright
Design, Selection, and Use of TMR Mixers	D.W. Kammel
Management Strategies Against Acidosis	M.B. Hall

9th Symposium, January 15-16, 1998

Program
Plant Biotechnology: a Progress Report and a Look Ahead	M. Cline
Current Concepts in Feeding Dairy Replacements	M.J. Vandehaar
Identifying Ration Components and Their Adequacy when Optimizing Production Performance	P. Chandler
Bioavailability of Organic Forms of the Micronutrients	C. Ammerman, P.R. Henry, R. Miles
Opportunities to Increase the Contribution of Peptides to Metabolize Protein	D.B. Bates
The Problem of Mycotoxins in Feedstuffs	B. Harris
Productive and Reproductive Responses of Holstein Cows Fed Whole Cottonseeds and Given Reduced Doses of bST	C.R. Staples, H.H. Van Horn, et al.
Nutritional Management of Dairy Cows During the Transition Period	J.K. Drackley
Making Nutritional Sense of Nonstructural Carbohydrates	M. B. Hall
Supplemental Protein Sources for Grazing Beef Cattle	R.C. Cochran, H.H. Koster, et al.
Global Issues Surrounding BSE	G.G. Pearl

8th Symposium, January 16-17, 1997

Maximizing Milk Production or Minimizing Cost Using Byproduct Feedstuffs	H.H. Van Horn
Supplemental Organic Chromium for Beef and Dairy Cattle	D.N. Mowat
Use of Copper Proteinates and Copper Lysine in Animal Feeding Programs	R. Hemken
Update on Bun and Mun as a Guide for Protein Supplementation in Cattle	A. Hammond
Balancing Diets for Dairy Cattle During Heat Stress Conditions	J. West
Recent Research on Liquid Supplements for Beef Cattle	B. Kunkle
A Rancher's Focus on Cost Effective Management	C. Quinn
Proposed Mechanisms for Enzymes as Modifiers of Ruminal Fermentation	J. Newbold
Symposium Sponsors

7th Symposium, January 11-12, 1996

Program
Management Strategies for Posilac use of Dairy Herds	R.J. Collier, B.C Housewright
A Nutritional Perspective on Reproductive Management	J. Spain
Effect of Feeding a Ruminant Grade Menhanden Fish Meal on Productive and Reproductive Performance of Lactating Dairy Cows	J.M. Burke, C.R. Staples, et. al
Value of Fat in Liquid Feed	F. M. Pate
Liquid and Dry Supplements for Grazing Beef Cattle	J.E. Moore, J.G.P. Bowman, W.E. Kunkle
Effect of Molasses & Sugar Supplements on Rumen Fermentation and Animal Performance	S. M. Emanuele
Animal Protein Byproducts and Byproduct Blends for Dairy Cattle	H.H. Van Horn
Amino Acids & Their Application in Formulating Diets for Cattle	C.G. Schwab
Improving Disease Resistance with Nutrients that Bolster the Immune System	J.W. Spears
Feet and Leg Problems in Dairy Cattle	J.K. Shearer
Benefits of Supplemental Vitamin E Including Relationship to Gossypol	L.R. McDowell, J. Velasquez-Pereira, et al.

6th Symposium, January 12-13, 1995

Program
Situation Analysis: First Year of Bovine Somatotropin Availability to the Dairy Producer – An Opinion of One	J.W. Lauderdale
What’s New Growth Standards for Dairy Heifers?	H.H. Head
Using Different Management Systems for Raising Dairy Heifers	J.D. Quigley
Applying New Strategies for Raising Beef Heifers	W.E. Kunkle, R.S. Sand, P. Garces-Yepez
Chromium as an Essential Mineral Element for Domestic Animals	C.B. Ammerman, P.R. Henry
Immune Responses Affected by Micronutrients	C.F. Nockels
Improving Forage Supplementation Programs for Beef Cattle	J.E. Moore, W.E. Kunkle
Identifying the Effective Fiber Value of Whiskey Distillers Dried Grains with Solubles in Lactating Dairy Cows Diets	C.R. Staples, B.S. Oldick, et al.
Optimizing Carbohydrate Fermentation in the Rumen	W.H. Hoover, T.K. Miller
How to Use Good Feed Bunk Management Practices	A.B. Johnson
Potassium Requirements for Cow-Calf Operations	T.L. Stanton
The Cation-Anion Difference Concept: Where Are We Now?	P.W. Joyce

5th Symposium, January 12-13, 1994

Program
Update on Feed Composition Tables	L.L. Berger
Considerations for Using By-Products Feedstuffs in the Southeast	J. West
Body Energy Reserves at Puberty in Beef Heifers	C.C. Chase, R.B. Simpson, et al.
Feeding Strategies During Hot Weather	J.T. Huber
Economic Effects of Whole Cottonseed & Supplemental Tallow on Lactation when Fed with Different Forages	H.H. Van Horn, B. Harris, A.L. Adams
The Role of Probiotics in Dairy Cattle Diets	B. Harris Jr.
An Update on Iron and Selenium in Animal Nutrition	C.B. Ammerman, P.R. Henry
Identifying Copper Deficiencies Under Field Conditions	D.B. Herd
The Role of Copper and Other Mineral Proteinates in Ruminant Diets	R.W. Hemken
Protein Levels and Sources in Molasses for Growing Cattle	W.E. Kunkle, D.A. Stateler, et al.

4th Symposium, January 13-14, 1993

Program
Optimizing Ruminal Fermentation to Maximize Amino Acid Availability	J. Clark
Selecting Different Feedstuffs to Provide the Undegraded Intake Protein Needs of High Producing Dairy Cows	H.H. Van Horn, B. Harris
Manipulating Nonstructural & Structural Carbohydrates in Rations for Dairy Cattle	J. Nocek
Protein Intake and Reproductive Performance of Dairy Cows: a Review, a Suggested Mechanism, and Blood and Milk Urea Measurements	C.R. Staples, C. Garcia-Bojalil, et al.
Interactions of Nutrition with Reproductive Performance in the Southeast	L.M. Rutter
Immune Responses to Proper Nutritional Management	N.A. Cole
Utilization of Soybean Hulls in Supplementation Programs for Beef Cattle	W. Brown, J. Weigel
Vitamin E and Selenium for Ruminants	S.N. Williams, T.M. Frye, et al.
Strategies for Predicting the First Limiting Nutrient for Grazing Cattle	T. Klopfenstein
Understanding Gossypol Toxicity Problems in Feeding Cotton by-Products to Ruminant Livestock	C.A. Risco
Formulation Strategies for Cation-Anion Difference in Diet of Late Pregnant Cows	D.K. Beede

3rd Symposium, January 23-24, 1992

Program
Potential Use of Escape Protein for Grazing Cattle	D. Hutcheson
Use of Blood Urea Nitrogen Concentration to Guide Protein Supplementation in Cattle	A. Hammond
The Role of Bypass Protein in Supplying Amino Acids Needs of Lactating Cows	H.H. Van Horn, W.J. Powers
Matching Protein and Energy Supplements to Forage Quality	J. Moore
Managing Factors that Affect the Production and Utilization of Quality Forages	W. Kautz
Microbial Feed Additives for Dairy Cattle	B. Perkins
Optimizing Macro Mineral Nutrition: Pre and Post Calving	P. Chandler
Reproductive Performance as Affected by Nutrition and Environment	J.H. Britt
The Influence of Forage Type on the Production Response of Lactating Dairy Cows Supplement with Different Types of Dietary Fat	W.A. Smith, B. Harris Jr.
Laminitis: a Major Cause of Lameness in Florida Dairy Cattle	J.K. Shearer, E. Bernal
Nutra-Merge: a Simplified Computerized Ration Formulation Program for Beef and Dairy Cattle	D. Cross

2nd Symposium, January 23-24, 1991

Program
Chelated Trace Minerals in Ruminant Nutrition	J. Spears
Feeding Early Lactation Cows for Maximum Performance	M. Allen
Factors Affecting Protein and Solids-not-Fat (SNF) Content of Milk	J. Van Horn, K.C. Bachman
Interrelationships of Dietary Sodium, Potassium, and Chlorine and Cation- Anion Differences in Lactation	W.K. Sanchez, D.K. Beede
Phosphorus Utilization and Availability it’s Affect on Production and Reproduction	D. Whittington
Update on Vitamin E and Selenium Nutrition for Ruminants	L. McDowell, S. Williams
Use of Yeast Products in Dairy Cattle	J. Wohlt
Feeding Molasses Slurries to Cattle	F.M. Pate
Update on the use of NIRS in Establishing Feeding Values for Forages and Concentrates	W.F. Brown
Feeding Brood Cows at Differing Ages for Desired Body Composition	W.E. Kunkle, R.S. Sand, D.O. Rae,
Effect of Increasing Dietary Fat Content on Production and Fertility of Early Postpartum Cows	C.R. Staples, W. Thatcher et al.

1st Symposium, January 23-24, 1990

Program
Agricultural Adjustments in the 90’s or "If Cows Eat Wild Onions, Will The Milk Taste Bad?"	J. B. Rowe
Feeding for Production of Milk Components	R.S. Emery
Practical Applications of Potassium in Cation-Anion Balancing of Ruminant Rations	D.P. Hutchenon
Bioavailability of Supplemental Trace Minerals as Estimated by Tissue Accumulation	C.B. Ammerman, R.D. Miles, P.R. Henry
Using Molasses and Protein Supplements for Grazing Beef Cattle	W.E. Kunkle, D.B. Bates
Use of Molasses as a Vehicle for Liquid Supplementation of Nutrients in Total Mixed Dairy Rations	A. Lane
Concepts for Maximizing Microbial Protein Synthesis and Bypass Protein Utilization	D.B. Bates, S.C. Denham
Dietary Electrolyte Balance and Anionic Diets for Dairy Cows in Late Gestation	D.K. Beede, W.K. Sanchez, C. Wang
Comparative Value of Grass Silage and Corn Silage as Forages for cow and Heifer Diet	C.R. Staples
Use of Direct-Fed Microbials and Enzymes in Ruminant Rations	L. Kung, Jr.
Feeding for Maximum Milk Production and Reproductive Performance	B. Harris, Jr.