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Beef Reproduction Task Force

Beef Reproduction Task Force

University of California-Davis

UC Davis Animal Science

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Meet The Speakers

Speakers are grouped below by the segment of the symposium in which they are to present. For an alphabetical listing of speakers.

Estrus Synchronization | Management & Nutrition | Fertility-related Factors | Advances & Health-related Issues

Symposium speakers (alphabetically)...

Willie Altenberg | Aaron Arnett | Denny Crews | Roger Ellis | Tom Field | Rick Funston | Casey Gabel | Jim Graham | Ronnie Green | Carl Hansen | Tim Holt | Sandy Johnson | Cliff Lamb | Jim Lauderdale | Kevin Miller | Bob Mortimer | David Patterson | George Perry | Lance Perryman | Larry Rowden | Ivan Rush | Richard Saacke | George Seidel | Michael Smith | Laura Teague | Don Trimmer | Jack Whittier


James Lauderdale Jim Lauderdale

President, Lauderdale Enterprises. Jim Lauderdale earned a bachelor’s degree in animal science from Auburn University (1962) and both a master’s degree (1964) and a doctoral degree (1968) in endocrinology and reproductive physiology from the University of Wisconsin, Madison. Jim was employed in 1967 by The Upjohn Company Animal Health business as a research scientist. His research during his 31-year employment was directed at increasing the efficiency of postpartum cow and postpartum sow reproduction, the role of prostaglandin F2 in the regression of the corpus luteum and as a practical means for controlling the estrous cycle of cattle and mares and time of parturition in swine, the use of steroids for enhancement of productive efficiency of beef cattle, and the development of bovine somatotropin to enhance the efficiency of milk production of dairy cows. The research with prostaglandin F2 led to the worldwide approval for the use of prostaglandin F2, Lutalyse® sterile solution, for use in cattle, mares and swine. Jim has served as president of the American Society of Animal Science and the Federation of Animal Science Societies. He continues to be an active member of ASAS and ADSA. Following retirement in 1998, Jim formed Lauderdale Enterprises Inc., an animal health consulting firm. He continues to work in the animal health industry, primarily in the area of domestic animal reproduction management.


Lance Perryman

Dean, College of Veterinary Medicine, Colorado State University


Michael SmithMichael Smith

Professor, animal sciences, University of Missouri. Michael F. Smith grew up in Michigan and received his bachelor’s degree from Colorado State University and his master’s and doctoral degrees from Texas A&M University. He joined the Division of Animal Sciences at the University of Missouri in 1980. He is a professor of animal sciences, and his academic responsibilities include teaching and research. He was a visiting scientist at the Babraham Institute (Cambridge, England; 1987-1987) and the Roslin Institute (Edinburgh, Scotland, 1997-1998). He served as the interim director of the Division of Animal Sciences from 2001 to 2006. The long-range goal of his research program is to increase reproductive efficiency in cattle. Dr. Smith and his graduate students are trying to better understand the mechanisms regulating ovarian follicular maturation, ovulation, corpus luteum function, and the establishment/maintenance of pregnancy in beef cattle. He works closely with Dave Patterson on the development of economical and effective methods for timed insemination in beef heifers and cows.


Jack WhittierJack Whittier

Extension beef specialist and professor, Colorado State University. Jack C. Whittier attended Utah State University, where he received a bachelor’s degree in 1979 and a master’s degree in 1981. He attended the University of Nebraska and received a doctoral degree in ruminant nutrition in 1985. He joined the faculty at the University of Missouri as Extension cow-calf specialist, working there for 9 years. In February 1995 he joined the animal science faculty at Colorado State. During his tenure at both the University of Missouri and Colorado State, he has held joint appointments with Extension and research. This joint assignment has allowed him to focus both research and educational efforts to meet applied production needs of cattle producers. Much of his work has dealt with reducing the costs associated with producing beef by improved use of forages. He has also focused on improving reproductive output through proper heifer development, estrous synchronization and reproductive management of the cow herd. He and a colleague, Dr. Tom Geary, published the first research with the estrus synchronization protocol now commonly called CO-Synch. He served as president of the Western Section of the American Society of Animal Science in 2003-04 and received the Extension Award from that society in 1999.


David Patterson

Extension educator, reproductive management, University of Missouri. David Patterson was raised on a diversified farming and ranching operation in south-central Montana. Patterson holds a joint appointment in research and Extension in the Division of Animal Sciences at the University of Missouri. Dr. Patterson’s research is focused on the development of methods to synchronize estrus in beef heifers and cows, with recent work directed largely toward the development of methods to facilitate the use of fixed-time AI. Patterson in addition coordinated development of the Missouri Show-Me-Select Replacement Heifer Program, the first state-wide on-farm development and marketing program for beef heifers in the nation. During the past 11 years, nearly 80,000 heifers representing more than 600 Missouri farms were enrolled in the Show-Me-Select Program. Dr. Patterson was a past recipient of the Missouri Cattlemen’s Association’s Outstanding Service to the Missouri Beef Industry Award and Progressive Farmer’s “Man of the Year in Missouri Agriculture for 2001.” In addition, Dr. Patterson received the American Society of Animal Science Extension Award in 2006 and the Animal Industry Award in 2007.


Cliff LambCliff Lamb

Extension beef cattle specialist & associate professor, University of Florida. Cliff Lamb initiated his post-secondary studies at Middle Tennessee State University and graduated with bachelor’s degree in animal science in 1992. He received his master’s and doctoral degrees at Kansas State University. In 1998, after completing graduate school, Dr. Lamb became a beef specialist/assistant professor at the University of Minnesota. He was promoted to associate professor in 2003 and served in that capacity until moving to the University of Florida in 2008. His primary research efforts focus on applied reproductive physiology in beef cattle, emphasizing efficient reproductive management systems for replacement heifers and postpartum cows. In addition to research and extension, Dr. Lamb coordinates the beef research facilities at the University of Florida North Florida Research and Education Center in Marianna.


Sandy JohnsonSandy Johnson

Extension livestock specialist, Kansas State University Research and Extension. Johnson is located at the Northwest Research and Extension Center in Colby. She was raised on a diversified livestock operation in northeast Nebraska and received a bachelor’s degree in animal science from the University of Nebraska. She went on to receive a master’s degree from the University of Missouri and a doctoral degree from West Virginia University, both in reproductive physiology. Johnson held a teaching position at Fort Hays State University before beginning her current position with K-State in 1998. Johnson conducts research in the areas of estrous synchronization, costs of breeding systems and cow-calf management. 


Larry Rowden

District sales manager, ABS.


Tom Field

Executive director of producer education, National Cattlemen's Beef Association. Tom Field began his position with NCBA after spending 18 years as a faculty member in the department of animal sciences at Colorado State University in Fort Collins. At CSU he was responsible for the seedstock cattle breeding program of the university teaching herd, which is composed of Angus and Hereford cattle. Field coordinated the Seedstock Merchandising Team at CSU and developed the standard operating procedures and Quality Assurance Manual for the university livestock center. A native of Colorado, Field earned his bachelor’s, master’s and doctoral degrees at CSU. He served as a consultant to numerous beef organizations and has given invited presentations across the U.S. and internationally. Field has been recognized numerous times for his excellence in teaching, including the Distinguished Teaching Award from the American Society of Animal Science.


Ivan Rush

Professor, animal science, retired, University. Ivan Rush's Extension programs focus on nutrition, management and beef systems. He serves on the 4-State Range Beef Cow Symposium committee and speaks at numerous educational meetings. His research deals with systems of production from weaning to harvest, especially the areas of utilizing resources in the Intermountain High Plains area, value of beet pulp and field peas, and E. coli. Rush served as a beef specialist at the Panhandle Research and Extension Center for 31 years. He earned his bachelor’s and master’s degrees at the University of Missouri, and a doctorate at Oklahoma State University. He served as a county ag agent in Dawson County, Neb., and in Colombia, South America, as an Extension livestock specialist. Rush has served on the board of directors for the Midwest Section of the American Society of Animal Science and the Nebraska Cattlemen. He also has served as chairman of the National Integrated Resource Management-National Cattlemen’s Beef Association Coordinating Committee, plus many other state and national committees and activities. He has received numerous awards, including National IRM Award, 2003 Nebraska Prime Beef Promoter, and UNL Excellence in Team Programming.


George PerryGeorge Perry

Assistant professor, beef reproductive management, South Dakota State University. George Perry was raised in south-central Texas on a small cattle operation. He received his bachelor’s degree in animal science from Texas A&M University. He obtained a master’s degree and a doctoral degree in reproductive physiology from the University of Missouri, with a large portion of his doctoral research conducted at the USDA research station in Miles City, Mont. Dr. Perry joined the faculty of South Dakota State in August 2003. He serves as an associate professor and the beef Extension specialist in reproductive physiology. His research efforts are in the area of factors that influence reproductive efficiency and pregnancy success. Some of his current research has focused on understanding why variation occurs between herds with fixed-time AI protocols.


Rick Funston

Extension reproductive physiologist, University of Nebraska.


Willie Altenberg

Associate vice president, beef marketing, Genex.


Carl Hansen

Owner/operator, Hansen Ranch, Livermore, Colo.


Kevin Miller

Owner/operator, Croissant Red Angus, Briggsdale, Colo.


Laura Teague

Owner/operator, Teague Diversified, Fort Morgan, Colo. Laura Teague ranches in Valentine and Atkinson, Neb., and approximately 500 cows managed on a Fort Morgan, Colo., ranch. They also develop approximately 2,500 heifers each year for themselves and other producers, and AI approximately 5,000 heifers on ranches in Wyoming, Utah and Montana for producers who have developed their own heifers on their respective ranches. The Colorado cow herd includes a seedstock Angus herd, which is utilized to produce bulls for the commercial herds in Colorado and Nebraska. The cows in Nebraska are managed on an extensive natural resource management program, making the use of AI a great challenge. The cows and heifers managed in Colorado are managed on a much more intensive basis, which makes AI a useful and important management tool. The Teagues incorporate AI breeding into their production schemes as much as possible without affecting the use of the natural resources of their ranches.


Aaron Arnett

Beef genetics specialist, Select Sires


Denny Crews Denny Crews

Professor, beef cattle breeding and genetics, Colorado State University. Denny Crews was raised in southern Florida, where he was involved in the family cattle operation and showed breeding animals and market steers. He received his master’s degree in beef cattle science from the University of Florida in 1992 and his doctoral degree in animal breeding and genetics from Louisiana State University in 1996. While finishing his doctorate, he spent a summer as a visiting scientist at the University of Nebraska, where he worked on multi-breed, multiple-trait genetic evaluation models for carcass merit. Later, he became a postdoctoral researcher in beef genetics at the Agriculture and Agri-Food Canada Research Centre in Lethbridge, Alberta. He became a senior research scientist and national livestock genetics program leader for Agriculture and Agri-Food Canada and was the University of Alberta AAFC Chair Professor in beef quantitative genetics and genomics. In 2008, Denny joined the faculty of the Animal Sciences Department at Colorado State. He works to develop genetic evaluation and improvement programs for economically relevant traits in beef cattle, such as efficient feed utilization, carcass merit and maternal productivity. He teaches graduate-level courses at Colorado State in computational biology, genetic prediction and cattle breeding.


Richard SaackeRichard Saacke

Professor emeritus, reproductive physiology, Virginia Polytechnic Institute and State University. Richard G. “Dick” Saacke is a graduate of Rutgers University and holds advanced degrees from the Pennsylvania State University. His work has centered on the structure and function of spermatozoa and ova. Particular areas of research emphasis have included optimization of semen preservation methods and identification of semen traits important to sperm transport in the female, to fertilization and to embryonic development. The general focus of his work has been toward improvement of reproductive efficiency using artificial insemination. Saacke has published more than 100 scientific papers and has been recognized for his research, having received the National Association of Animal Breeders Research Award in 1985, the Upjohn Physiology Award from the American Dairy Science Association in 1988 and the 2006 Casida Award from the American Society of Animal Science for training graduate students. Dr. Saacke retired from Virginia Tech in 2001.


James GrahamJim Graham

Research scientist, natural resource ecology, Colorado State University. James Graham is a professor in the Department of Biomedical Sciences at Colorado State University. He received a doctorate in reproductive physiology at Cornell University and completed postdoctoral training at Michigan State University and Pennsylvania State University before joining the faculty at Colorado State in 1990. In addition to teaching responsibilities, his research has focused primarily on improving the cryosurvival of spermatozoa of many species, including cattle, horses, sheep, rabbits and rodents, and on developing more effective laboratory methods for semen evaluation. In addition, he conducts research, developing techniques to capacitate spermatozoa in vitro to facilitate better results for in vitro fertilization. Most recently, he is working on developing orally ingested contraceptives for wild animals that have become a nuisance in populated areas, such as the Canadian goose, and animals that are destructive to grazing and croplands, such as the feral pig.


Roger Ellis

Extension veterinarian, Colorado State University.


Casey Gabel

Analyst, Cattle-Fax.


Don Trimmer

Beef genetics manager, Accelerated Genetics.


George SeidelGeorge Seidel

Professor, reproductive physiology, Colorado State University. George E. Seidel Jr. was raised on a dairy farm in Pennsylvania. He received a bachelor’s degree in dairy science from Pennsylvania State University in 1965, and master’s (1968) and doctoral (1970) degrees from Cornell University. His master’s thesis concerned methodology of semen collection from bulls and biochemistry of semen. His doctoral thesis concerned the endocrinology of superovulation of prepuberal calves and the culture and transfer of the resulting embryos. Dr. Seidel then went to Harvard Medical School to study rabbit oocytes with electron microscopy. For the past 35-plus years, he has been at the Animal Reproduction and Biotechnology Laboratory in the College of Veterinary Medicine and Biomedical Sciences at Colorado State, where he is a University Distinguished Professor. His initial work was on reproductive physiology of bulls and stallions. In 1973, the Embryo Transfer Laboratory was established. Cattlemen brought donor cows to the lab for superovulation and embryo transfer, with fees funding the bulk of the lab’s teaching and research. Techniques such as nonsurgical recovery and transfer of bovine and equine embryos and cryopreservation of embryos were developed, refined and taught to others. In the late 1990s, his laboratory made a huge, largely successful effort to make sexing sperm by flow cytometry/cell sorting practical for AI. Current research projects include in vitro oocyte maturation and fertilization, regulation of carbohydrate metabolism of preimplantation embryos, gene expression in early embryos and cryopreservation of oocytes and embryos by vitrification. Dr. Seidel and his wife, Sarah, also own a cattle ranch, including a registered Angus herd.


Bob Mortimer

Associate professor, integrated livestock management, Colorado State University.

Tim Holt

Assistant professor, integrated livestock management, Colorado State University.

Ronnie GreenRonnie Green

Senior director of global technical services, Pfizer Animal Genetics. Ronnie Green is recognized as one of the leading international authorities in the area of cattle genetic improvement and genomics. He holds degrees from Virginia Tech, Colorado State University and the University of Nebraska in animal genetics. He served as a professor of animal sciences at Texas Tech University (1988-1994) and Colorado State University (1994-2000), where he was recognized with a number of distinguished teaching and research awards. From 2003-2008, Green served as the national program leader for animal production research for the USDA Agricultural Research Service and as the executive secretary of the White House’s interagency working group on animal genomics within the National Science and Technology Council. In this role he directed a $45 million annual research portfolio and was one of the principal leaders in the international bovine, porcine and ovine genome projects. In April 2008 he assumed the position of global director of technical services for Pfizer Animal Genetics.