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Maryland Bans Arsenic In Chicken Feed

Maryland became the first state to ban the use of additives containing arsenic in chicken feed Tuesday. The measure is among several new statewide laws that took effect Jan. 1.

State lawmakers passed a bill banning the chemical last year. It's used to help poultry and other fowl grow and fight parasites.

Pfizer Inc., which distributes the product, stopped selling the additive in July 2012 after a U.S. Food and Drug Administration study found higher levels of inorganic arsenic in chickens treated with the chemical.

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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.