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University of Michigan Study Finds Large Animal Farms Might Be a Significant Source of Air Pollution

By Joe Tarr

When an eastern wind blows through Larry Brenner’s home in Pierce County, he knows two things are likely.

“One, as the old farmers will tell us, it’s going to rain. And two, when I wake up in the morning and head outside, the smell is not very good,” Brenner told WPR’s “Wisconsin Today.”

The bad smell emanates from a dairy farm about a mile east of Brenner’s home, where he runs the outdoor restaurant Vino in the Valley. The nearby farm, Ridge Breeze Dairy, has 1,700 cows, but it is planning on expanding next year to 6,500 cows.

Brenner worries what that expansion could mean, not just for the smells that might blow his way, but also for the potential for his well water to be contaminated. He’s among a group of neighbors who have petitioned the state Department of Natural Resources to reconsider its approval of the farm expansion.

The planned expansion in Pierce County would generate almost 80 million gallons of manure and wastewater, and Brenner said there’s a big concern about how that will impact water quality.

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Genetics vs Genomics in Swine - Dr. Max Rothschild

Video: Genetics vs Genomics in Swine - Dr. Max Rothschild



In this episode of The Swine it Podcast Show Canada, Dr. Max Rothschild, Distinguished Professor at Iowa State University, explains how genetics and genomics have transformed swine production. He explores genomic selection, key gene discoveries, and the role of gene editing in improving disease resistance and productivity. Practical insights on litter size, meat quality, and industry adoption are also discussed. Listen now on all major platforms!

"Genetic improvement in swine production accelerated significantly once molecular tools enabled identification of DNA level variation influencing growth, reproduction, and meat quality across commercial populations."

Meet the guest: Dr. Max Rothschild / max-f-rothschild-b3800312 earned his PhD in Animal Breeding from Cornell University and has spent over four decades at Iowa State University advancing swine genetics and genomics. His research focuses on genetic improvement, disease resistance, and molecular tools for swine production. A leader in pig genome research, his work has shaped modern breeding strategies.