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Economics of herd rebuilding depend on cull rate, study finds

The study drew information from 17 farms registered with the council’s cow-calf production network from Western Canada and northern Ontario, said Brenna Grant, executive director of CanFax. It then modelled the farms’ recovery, based on a projected cull level (ranging from no extra culls to a 25, 50 or 75 per cent herd loss) and recovery strategy (purchased replacement stock versus replacement heifers).

“The overall objective that we wanted to answer with this study was: How do you minimize the equity drain on the operation?” Grant said.

A farm’s circumstances are rarely cut and dried, she said. Choices might hinge on availability of local feed or how strongly the producer wants to preserve herd genetics or level of concern about biosecurity when bringing in new stock. Cash flow also affects a producer’s ability to buy replacements.

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Genetics vs Genomics in Swine - Dr. Max Rothschild

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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.