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Pork industry sees Prop 12 enforcement hurting pig farmers, consumers and animal health

The pork industry says the U.S. Supreme Court’s split decision to uphold California’s Proposition 12 law that regulates space given to breeding pigs and their offspring will create hardships for both pork producers and consumers, as well as possibly having a negative impact on animal health.

Proposition 12 is a voter-enacted law that considers confinement of pigs "cruel" if it prevents a pig from "lying down, standing up, fully extending (its) limbs or turning around freely." California voters approved an initiated measure proposing the law in 2018 with 63% of the vote.

While supporters of the law promoted it as a move to improve animal health, pork producers say that doesn’t hold up. One major issue with the law is that it seeks to stop the use of gestation stalls.

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Validating Net Energy in Commercial Swine Systems - Gustavo Lima

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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.