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Farmers Must Kill 4.2 Million Chickens After Bird Flu Hits Iowa Egg Farm

More than 4 million chickens in Iowa will have to be killed after a case of the highly pathogenic bird flu was detected at a large egg farm, the state announced Tuesday.

Crews are in the process of killing 4.2 million chickens after the disease was found at a farm in Sioux County, Iowa, making it the latest in a yearslong outbreak that now is affecting dairy cattle as well. Last week, the virus was confirmed at an egg farm west of Minneapolis, leading to the slaughter of nearly 1.4 million chickens.

Overall, 92.34 million birds have been killed since the outbreak began in 2022, according to the U.S. Department of Agriculture.

Although bird flu has become somewhat common among poultry, its spread to cattle has added to worries about the disease. In May, a second dairy farmworker was diagnosed with bird flu, and the virus was detected in both beef and milk. It has been confirmed on dairy cattle farms in nine states.

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Methionine Requirements for Lactating Sows - Cierra Kozole

Video: Methionine Requirements for Lactating Sows - Cierra Kozole


In this episode of The Swine Nutrition Blackbelt Podcast, Cierra Kozole, PhD candidate in Swine Nutrition at the University of Guelph, explains how methionine supports lactating sows beyond milk protein synthesis. She discusses updated requirement estimates, source comparisons, methylation demand, and why modern sow genetics may require more precise amino acid strategies. Listen now on all major platforms!

"Methionine supports protein synthesis while also serving critical functions through methylation pathways that influence multiple biological processes."

Meet the guest: Cierra Kozole / cierra-kozole-772b64253 is a PhD candidate in Swine Nutrition at the University of Guelph in Canada. Her doctoral research focuses on refining estimates of methionine requirements for primiparous lactating sows, including evaluating methionine sources, nutrient partitioning, methylation reactions, and the links among amino acid supply, milk production, and sow protein retention. Learn more from Cierra Kozole on The Swine Nutrition Blackbelt Podcast, available on all major platforms.