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Huskers aim to crack code of major swine virus

Two University of Nebraska-Lincoln scientists have received a $627,000 federal grant to study a viral disease posing a significant threat to the swine industry worldwide. 

Porcine reproductive and respiratory syndrome virus is widespread, causing reproductive failure in sows and major respiratory illness in pigs of all ages. In addition, the virus modulates the pig’s immune system, making the animal more susceptible to other infectious diseases. The costs to the U.S. swine sector from PRRSV annually total an estimated $1.1 billion. 

Hiep Vu, associate professor of animal science, is the co-director of the research project, funded by a three-year grant from the U.S. Department of Agriculture. The other co-director is Sarah Sillman, assistant professor with Nebraska’s School of Veterinary Medicine and Biomedical Sciences and the Nebraska Veterinary Diagnostic Center. 

The project will examine how PRRSV infects swine macrophages, the immune cells that recognize, engulf and destroy harmful intruders, including viruses and bacteria. 

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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.