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Canada weighs approval of genetically engineered pigs

According to a recent USDA-FAS report, Canada is reviewing the potential commercial use of genetically engineered pigs, while pausing regulatory changes related to cloned swine. 

USDA-FAS reports that Environment and Climate Change Canada consulted with the public between June 20 and July 20, 2025, on four lines of genetically engineered pigs submitted under the New Substances program. The proposal would allow the pigs to be used in commercial breeding operations and pork production. A regulatory decision had not yet been released at the time of writing, and Health Canada had not published food safety assessments related to the pigs.

Separately, Health Canada has indefinitely paused a proposed policy update that would have removed cattle and swine clones produced through somatic cell nuclear transfer, and their offspring, from Canada’s novel food regulations. The policy change was first proposed in spring 2024 but was halted in fall 2025 following consumer and industry feedback. 

Under the current framework, food products derived from cloned swine remain classified as novel foods and continue to require pre-market approval.

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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.