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Research: Much to gain if nursery diets match digestive capabilities.

Previous nursery feeding logic told us to feed nursery pigs based on their weaning weight. That heavier pigs had more advanced guts and could handle a more advanced diet. New research involving Nurture™, Cargill’s young pig program, shows weight isn’t the main factor in how we should be feeding pigs; we need to look at the digestive capabilities, and that is tied to their age.

Tremendous changes occur in a young pig’s digestive capabilities between seven and 35 days of age. “Until this point, the piglet’s immune system has relied heavily on colostrum and maternal antibodies from the sow,” according to Sabrina May, Pork Tech Application Lead, Cargill.

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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.