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About This Webinar
Over recent years there’s been a resurgence in interest in the use of probiotic approaches to serve as Alternatives to Antibiotics to improve animal production, especially in the dairy and beef industry. While probiotic products (also known as Direct Fed Microbials) have been very effective in improving the fermentation efficiency, their consistency in activity is limited. Probiotic products encompass a large variety of products, ranging from traditional probiotic products, and includes postbiotics, and prebiotics. We will discuss the nature of each of these categories, as well as the modes of action of these products, and what their effects on the native microbial population and on animal production metrics are. So, it is important that we understand why probiotic approaches work and more importantly why sometimes they don’t work.
Presenter
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Dr. Todd Callaway
Associate Professor, UGA
Dr. Todd Callaway has joined the faculty of the Department of Animal and Dairy Science at UGA. Todd is a ruminant microbiologist who grew up on a small horse, dairy, and beef farm and received his B.S. and M.S. degrees from the University of Georgia in Animal and Dairy Science in 1993 and 1996, respectively. He then went on to receive his Ph.D. degree in Microbiology from Cornell University in 1999. Dr. Callaway’s research in graduate school focused on how the bacteria in the rumen of cattle could adapt and become resistant to ionophores, and how ionophore usage could be enhanced or replaced using non-antibiotic approaches.

Following graduate school, Dr. Callaway joined the Agricultural Research Service of the USDA (USDA-ARS) in 2000 and served as a research microbiologist in the Food and Feed Safety Research Unit at the Southern Plains Agricultural Research Center, in College Station, Texas. There his research mission was to reduce food-borne pathogens such as Salmonella and E. coli O157:H7 in animals prior to slaughter. As part of his research focus, Dr. Callaway focused on the intestinal microbiome and the impacts of diet on the microbial population and host susceptibility to pathogen colonization. His research has been supported by the: National Cattlemen’s Beef Association, National Dairy Board, National Pork Board, U.S. Poultry and Egg Foundation, and numerous companies from around the world. In 2016, Dr. Callaway served as the Acting and subsequently became the National Program Leader for Food Safety for USDA-ARS, with a portfolio of research that included: On-Farm Food Safety, Antimicrobial Resistance, and Microbiome research.

During his research career, Dr. Callaway has published more than 200 refereed journal articles, more than 25 book chapters, and 2 books entitled “Direct Fed Microbials” and “On-Farm Strategies to Control Foodborne Pathogens”. Dr. Callaway received the American Society of Animal Science Early Career Research Award and the USDA/ARS Early Career Scientist of the Year Awards in 2007. Dr. Callaway has chaired numerous scientific meetings and research panels. Todd is excited to begin again working with the producers of Georgia to understand their specific needs and how manipulation of the ruminal microbes can improve profitability on the farm. His research at UGA is going to focus on the role of the ruminal microbes in the nutrition of cattle, and how the complex environment of the cattle gastrointestinal tract can impact food safety.
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