Swine conjunctivitis outbreaks associated with Mycoplasma hyorhinis

New PhD-graduate Talita Resende described in this open-access publication from the Journal of Veterinary Diagnostic Investigation conjunctivitis cases in 3 wean-to-finish barns. After extensive investigation, Mycoplasma hyorhinis was identified as a causative agent.

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Effect of Single Dose of Antimicrobial Administration at Birth on Fecal Microbiota Development and Prevalence of Antimicrobial Resistance Genes in Piglets

This is our Friday rubric: every week a new Science Page from the Bob Morrison’s Swine Health Monitoring Project. The previous editions of the science page are available on our website.

This week’s Science Page presents the results of a project done by Zeineldin et al. from Dr. Jim Lowe’s program at the University of Illinois.

Keypoints

  • Early life antimicrobial prophylaxis had no effect on individual weight gain, or mortality but it was associated with minor shifts in the composition of fecal microbiota and noticeable changes in the abundance of selected Antimicrobial Resistant Genes
  • The shifts in fecal microbiota structure caused by perinatal antimicrobial intervention are modest and limited to particular groups of microbial taxa
  • Early life PPG and TUL intervention could promote the selection of Anrimicrobial Resistant Genes in herds
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2 weeks left to participate in the Morrison Swine Innovator Prize

Veterinary students: Are you shadowing a swine practitioner this summer or have you been involved in an interesting clinical case investigation? Did you work on your veterinary skills by designing a differential diagnosis list or working on a treatment plan? Did you investigate a problem by analyzing production records? Share your work at the Allen D. Leman Swine Conference to win the Morrison Swine Innovator Prize!

Attending the Leman Conference is a great opportunity for veterinary students who want to network with industry leaders. Submissions to enter in the selection to present at the DVM student session at the Leman Conference should be uploaded at z.umn.edu/MSIP by August 15th at the end of the day.

If you have any questions, please contact Dr. Perle Zhitnitskiy at pboyer@umn.edu. For more information about the Morrison Swine Innovator Prize visit z.umn.edu/MSIP.

Can Streptococcus suis genotype predict its pathogenicity?

PhD candidate April Estrada, working with Drs. Gebhart and Marthaler published an open-access article on Streptococcus suis in the Journal of Clinical Microbiology. Streptococcus suis is an older pathogen but its prevalence as well as its virulence have been rising lately. This study investigates if categorizing isolates into serotypes and genotypes could help predict the severity of the disease on the farm.

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Effect of litter aggregation and pooling on detection of PRRSv in piglet processing fluids

This is our Friday rubric: every week a new Science Page from the Bob Morrison’s Swine Health Monitoring Project. The previous editions of the science page are available on our website.

The Science Page this week was written by the MSHMP team and covers pooling of processing fluids. A more detailed report can be found on the blog. Currently, a study to evaluate the number of negative processing fluids to declare a farm stable is ongoing. If you are interested in participating in this study, contact Dr. Juan Sanhueza (jsanhuez-at-umn-dot-edu).

Continue reading “Effect of litter aggregation and pooling on detection of PRRSv in piglet processing fluids”