Amber Zupan
Amber Zupan
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Determining the impact of undigestible NDF and starch fermentability in feedlot steers on performance and gut health.

In this study, we evaluated the effects of uNDF and grain fermentability on performance and gut health of feedlot steers during the finishing phase.

Current nutritional models are starting to incorporate undigestible NDF (uNDF) into formulations with little knowledge on how uNDF content affects performance and gut health of feedlot animals. In addition, formulations often use general forage content, however not all forages are created the same in terms of digestibility and effectiveness. In this study, we evaluated the effects of uNDF and grain fermentability on performance and gut health of feedlot steers during the finishing phase.


Amber Zupan grew up in Niagara Falls, Ontario before moving to Guelph in 2016 to complete her Bachelor of Science in Animal Biology, with a minor in Molecular Biology and Genetics at the University of Guelph. After taking her first agriculture courses in her undergraduate degree and volunteering in her now advisors lab, this sparked her passion for agriculture and the beef industry. In addition, Amber also completed a 4th year project looking at the impacts of maternal protein and methionine supplementation in beef dams to determine the impact on offspring performance and meat quality. Upon completing her BSc. In 2020, Amber continued on to do her Master of Science studying Beef Cattle Nutrition in the Department of Animal Biosciences at the University of Guelph. Amber’s MSc. is focused on determining the impact of indigestible NDF and grain fermentability of performance and gut health of feedlot steers. Outside of school, you can find her working at Grober Nutrition as a Nutrition and Technical Associate, working on a dairy farm, raising Autism service dogs, or spending time outdoors with her chocolate lab Carlton.

January 5, 2022, 10:00:00 p.m.

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