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Phylogenetic Analysis of Porcine Circovirus 3 Circulating in Canadian Pigs

Abstract: Phylogenetic analysis of porcine circovirus 3 circulating in Canadian pigs

Introduction: Porcine circovirus 3 (PCV3) has been detected in pigs worldwide and associated with several clinical signs.
Methods: To investigate the genetic diversity of PCV3 strains circulating in Canada, 44 PCV3 positive samples from Saskatchewan (2/44), Manitoba (2/44), Quebec (4/44), Alberta (11/44) and Ontario (25/44) submitted to diagnostic laboratories in Canada between 2019 and 2021 were sequenced and analyzed.
Results: Phylogenetic analysis of capsid genes showed that all of the 44 Canadian strains classified into PCV3a and segregated into seven lineages with common amino acid changes observed at A24V, R27K, N56D, T77S, Q98R, L150I (F) and R168K positions.

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CEOs of the Industry: John McIntire, Partner at Pike Pig Systems

Video: CEOs of the Industry: John McIntire, Partner at Pike Pig Systems

CEOs of the Industry, Jim sits down with John McIntire, Partner at Pike Pig Systems, one of the most quietly impressive 26,000-sow operations in the U.S. John shares how he grew from operator to partner, how Pike built a people-first culture with long-tenured managers, and why they’re committed to weaning bigger, stronger pigs at 25+ days.

John breaks down how Pike stays efficient in a tough economic environment, the power of their shareholder-owned farm model, and how their work with PIC and a 240-head boar facility drives genetics and health outcomes. He also opens up about the innovations Pike adopts — and how they decide what’s truly valuable versus industry hype.

From Prop 12 and labor challenges to trade, consumer expectations, and sustainability, John chooses a hot-button issue and shares how Pike is preparing for the future. The episode closes with a rapid-fire “Fast Five” — mindset, leadership, daily habits, and three words that define Pike Pig Systems in 2025.

If you want a look inside a people-driven, purpose-driven, quietly elite pork system, this is an episode you won’t want to miss.