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Agriculture This Week: Will cows become the scapegoat for climate change?

When you have been involved with fairs and exhibitions as long as I have -- roughly 20 years showing stock and now roughly 35 as a journalist -- you have seen a lot of beef on the hoof.

I was reminded of that this past week as I attended the Yorkton Regional 4-H Show that was part of the local summer fair.

There is always something nostalgic for me in attending livestock shows. I was not a 4-H member as a youth but I was in the show ring at age five, so I have an appreciation for the work associated with exhibiting stock, and with the exhilaration of a red ribbon, and the disappointment when your animal does not catch the judge’s eye.

But, this year the show generated a different feeling, one where I found myself wondering what the fate of such shows may be, and in fact what will the fate of cattle production be.

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Validating Net Energy in Commercial Swine Systems - Gustavo Lima

Video: Validating Net Energy in Commercial Swine Systems - Gustavo Lima


In this episode of The Swine Nutrition Blackbelt Podcast, Gustavo Lima, PhD candidate at Iowa State University, explains how soybean meal net energy is evaluated using growth assays and calorimetry. He discusses caloric efficiency, validation under commercial conditions, and differences between controlled and real-world environments. Gustavo also highlights practical implications for diet formulation and ingredient valuation. Listen now on all major platforms!

“Indirect calorimetry provides a precise estimation of ingredient energy, yet validation under production conditions remains essential for accurate application in real systems.”

Meet the guest: Gustavo Lima / gustavo-lima-a9867127 is a PhD candidate in Animal Science at Iowa State University, specializing in swine nutrition, ingredient evaluation, and energy metabolism. With over 15 years of experience across Latin America, his work focuses on soybean meal utilization, caloric efficiency, and applied research for commercial production systems.