Research Summary
Are E. coli from diarrheic piglets more often multidrug resistant?
Among weaned piglets in Catalonia, multidrug-resistant E. coli were more frequent in diarrheic animals than in apparently healthy animals.
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Research Summary
Does autogenous S. suis vaccination of gilts protect their piglets?
A multiserotype autogenous vaccine in gilts improved maternal antibody transfer to about five weeks of age but did not reduce shedding or demonstrate clinical protection.
Research Summary
Can an experimental PCV2d virus-like-particle vaccine protect pigs?
In an experimental trial involving ten SPF miniature pigs, a PCV2d virus-like-particle vaccine markedly reduced viral detection after challenge, but farm effectiveness remains unproven.
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Does detecting PPV2 in lungs mean it causes respiratory or reproductive disease?
PPV2 was common in lungs from Colombian pigs, but coinfections predominated and direct localization in lesions was uncommon, so detection did not establish causation.
Research Summary
Can a clinical guideline actually reduce antimicrobial use against S. suis?
A peer-learning and e-learning intervention was associated with substantial reductions in antimicrobial use on farms with S. suis problems.
Research Summary
Did antimicrobial use really decline on Swiss pig farms?
In Switzerland, active ingredient use per pig declined from 2018 to 2021 while indicators based on treatment days or treatment incidence increased.
Research Summary
Is enhanced hygiene enough to reduce antimicrobial resistance in nursery pigs?
Enhanced hygiene did not reduce overall resistant E. coli prevalence in this study, although fecal blaTEM-1 abundance differed between groups.
Research Summary
Does a positive M. hyopneumoniae PCR simply detect DNA from dead bacteria?
In this experimental model, DNA from inactivated M. hyopneumoniae did not persist at detectable levels, unlike viable organisms.
Research Summary
Do all PRRSV variants have the same infectivity?
Three PRRSV variants differed in experimental infectivity, with L1C.5 requiring fewer infectious units to infect half of the pigs.
Research Summary
Does mixed-age weaning favor PRRSV circulation in the nursery?
In this study, batches from herds using mixed-age weaning had a substantially higher risk of PRRSV positivity than batches managed all-in/all-out.
Research Summary
What can near-real-time PRRSV surveillance in Ontario reveal?
Diagnostic laboratory data supported rapid PRRSV trend monitoring in Ontario while highlighting the importance of metadata quality and limits of RFLP classification.
Research Summary
Can pig movement help monitor M. hyopneumoniae infection?
Experimentally infected pigs moved less, suggesting that automated movement monitoring may complement conventional measures of M. hyopneumoniae infection.