In this episode of The Dairy Podcast Show, Dr. Kurt Rosentrater, Professor of Agricultural and Biosystems Engineering at Iowa State University, breaks down what sustainability really means across food and agriculture. He explains why feed efficiency matters more than any single additive, how DDGS and ethanol co-products fit ruminant diets, and why systems thinking, not silver bullets, drives lasting results. Listen now on all major platforms!

“Feed efficiency is one of the holy grails of sustainability. It is all about converting protein and energy into an animal product.”

Meet the guest: Dr. Kurt Rosentrater is a Professor of Agricultural and Biosystems Engineering at Iowa State University. His research focuses on grain processing, ethanol co-products including DDGS, and sustainable food and feed systems, bridging historical data with precision feeding tools to help producers make better decisions. Learn more from Dr. Kurt Rosentrater on The Dairy Podcast Show, available on all major platforms.

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What you'll learn:

• (00:00) Highlight
• (01:59) Introduction
• (03:18) Growing up on a farm
• (11:50) Sustainability across systems
• (17:42) Carbon scoring in formulation
• (24:49) Value of historical research
• (30:25) Feed efficiency as sustainability
• (37:13) Closing thoughts

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