The Nutritionist 2018

Upcoming & Archived Webinars

The two-hour sessions are held on the second Wednesday of the month.  A complete recording of each seminar will later be posted here and on the 3rLab websites.  Pre-registration is required. For more information and registration, contact

Our 2018 webinars are co-hosted by  Paula Turiello in Argentinaand in China by Tom Long; the primary host is Mariann Fessenden in English for AMTS. The webinar would not be possible without the generous assistance of Ajinomoto HeartlandArm & Hammer Animal NutritionDairyLand Lab, Dairy One Forage LaboratoriesR&D Life Sciences,Perdue AgriBusinessKemin, ABVistaOrigination, Inc., NovaMeal by Novita Nutrition ,AdisseoAminoMax, Jefo, and QLF



Marcia Endres, July 11, 2018 9 am 6 pm EDT

Milking dairy cows with robots

Dr. Marcia Endres is a Professor in the Department of Animal Science at the University of Minnesota with an extension/research appointment. Her research interests include dairy management, welfare and behavior. She has studied how various housing and management systems can influence health, welfare and performance of dairy cattle. In recent years, Dr. Endres has also conducted research and outreach on precision dairy technologies, including robotic milking systems, automated calf feeders and individual cow behavior sensors. Recording not yet available.

Heidi Rossow, August 8, 2018 9 am and 6 pm EDT

Manure management

Dr. Heidi Rossow is an associate professor of ruminant nutrition with UC Davis Veterinary School located at the Veterinary Medicine Teaching and Research Center (VMTRC) in Tulare, California. Her areas of research are computer modeling of nutrient metabolism and systems analysis of dairy feed management and production including developing methods to evaluate cow performance and feeding consistency. Dr Rossow will present on manure management. Recording not yet available.

Adam Lock, Sept. 12, 2018 9 am and 6 pm EDT

Supplemental fatty acids in lactating cow diets: myth and reality

Dr. Adam Lock is an associate professor in the Department of Animal Science at Michigan State University. Originally from a dairy farm in the southwest of the United Kingdom, Dr. Lock received his PhD from the University of Nottingham and completed a post-doc at that institution as well as at Cornell University. His research and extension programs focus on both dairy production and human nutrition and health, and the interface between these two disciplines. Current efforts concern the effect of diet on the production of biohydrogenation intermediates in the rumen, dietary strategies for maximizing milk fat synthesis, applying this knowledge to improve our ability to troubleshoot on farm issues related to milk fat depression, fatty acid absorption in the small intestine, fat supplementation opportunities, and the potential for omega-3 fatty acids to promote dairy cattle metabolism and health. Recording not yet available.

Trevor DeVries, Oct. 10, 2018 9 am and 6 pm EDT

Using knowledge of cow eating behavior to optimize nutritional management

Dr. Trevor DeVries is a Professor and Canada Research Chair in Dairy Cattle Behavior and Welfare in the Department of Animal Biosciences at the University of Guelph. Trevor received his B.Sc. in Agriculture and Ph.D. from The University of British Columbia.  In beginning his academic position in 2007, Dr DeVries has lead a highly productive research program focused on dairy cattle nutrition, management, behavior, and welfare. Recording not yet available.

Bill Weiss, November 14, 2018 9 am 5 pm EST

Mineral Recommendations

Dr Bill Weiss, PhD, professor at The Ohio State where his  main research areas are: effects of nutrition, specifically vitamins and trace minerals, on the health of dairy cows, energy metabolism of dairy cows, statistical and chemical evaluation of feedstuffs, and nutritional effects on milk composition. Dr Weiss is serving on the committee for the Dairy NRC. Recording not yet available.

The series is a unique, multi-language presentation held in English, Portuguese, Mandarin, and Spanish.

Noted ruminant nutritionists present in English hosted by Mariann Fessenden of AMTS in the United States; Marcelo Hentz Ramos hosts a simultaneously translated webinar in Portuguese, Tom Long hosts in Mandarin,  and Paula Turiello hosts a Spanish language webinar.

The purpose of these webinars is to provide access to technical seminars on a range of topics delivered by internationally recognized speakers to a global audience.

Key Points About the Nutritionist Series


The presentation is in English on Cisco’s WebEx platform, approximately 60 minutes in length.


Spanish, Mandarin, and Portuguese language webinars are simultaneously translated and transmitted through other platforms.


Questions are fielded in all four languages and The flow of the talk is not interrupted for translation.


The audience is global—live attendees were primarily from the Western Hemisphere but also included European, Asian and African attendees.


The talks are non-commercial.


Archived talks from 2015 through the present (as they are available) in English, are accessible by topic.

The Nutritionist

These multi language webinars are hosted in English by Mariann Fessenden of AMTS. Globally recognized educators, researchers, and nutritional practitioners speak on a variety of topics with 60 minute presentations. The talk is co-hosted in Spanish by Paula Turiello in Argentina; Tom Long hosts in Mandarin; and Elena Bonfante from Italy. Following the presentation, audience members from each webinar partner are able to ask questions. The webinars started in 2015. Recordings are archived, by year, for on-line listening, or on our vimeo site for downloading. All webinars are converted into podcasts.

Educational Webinars

In January 2017 the United States implemented a program focused on addressing the use of medications in feed animals that, if overused, could contribute to antibiotic resistance in human disease management. We held a webinar for nutritionist as animal caregivers that outlined the requirements for compliance. Dr. Melanie Hemenway for NYSCHAP spoke about the Veterinary Feed Directive on 22 March 2017. A recording of that webinar can be found here.



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