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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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Post-Weaning E. coli Control - Dr. Rodrigo Paiva

Video: Post-Weaning E. coli Control - Dr. Rodrigo Paiva


In this episode of The Swine it Podcast Show Canada, Dr. Rodrigo Paiva, DVM and PhD candidate at Iowa State University, explains how post weaning colibacillosis has changed in recent years and why pathogenic Escherichia coli has become more important in swine production. He discusses virulence factors, diagnosis, whole genome sequencing, biosecurity, and practical strategies to reduce disease risk while improving herd health. Listen now on all major platforms!

"Pathogenic E. coli now behaves like a robust, well-equipped truck carrying multiple tools for post-weaning disease."

Meet the guest: Dr. Rodrigo Paiva / rodrigo-paiva-09364355 is a veterinarian and PhD candidate at Iowa State University specializing in swine health, veterinary epidemiology, and post weaning colibacillosis. After several years working in commercial swine production in Brazil, his research has focused on understanding pathogenic Escherichia coli and improving disease prevention in modern production systems. Listen to Dr. Rodrigo Paiva on The Swine it Podcast Show Canada, available on all major platforms.