In this newly released article from the MycoLab in the Veterinary Microbiology journal, Dr. David Pillman working with Dr. Maria Pieters shares his results regarding detection of two mycoplasma species and how this was correlated with lameness scores in nursery and finishing pigs.
Continue reading “Detection of Mycoplasma hyorhinis and Mycoplasma hyosynoviae in oral fluids and correlation with pig lameness scores”
- M. hyorhinis was frequently detected in oral fluids in nursery and finisher herds
- High detection of M. hyosynoviae in oral fluids was observed in finisher herds.
- Proportion of lame pigs and M. hyosynoviae detection in oral fluids were correlated.
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.
Continue reading “Swine conjunctivitis outbreaks associated with Mycoplasma hyorhinis”
Today, we are sharing an original research article published by the MycoLab and Dr. Maria Pieters in PLOS One regarding detection patterns for 2 species of mycoplasmas in sows and piglets.
The objectives of this study were to:
- describe when Mycoplasma hyorhinis and Mycoplasma hyosynoviae can be detected in piglets and is sows,
- assess if there was a correlation between detection of the mycoplasmas in the sow and in the piglet, and
- assess if there was a correlation between lameness and mycoplasma detection.
Under the conditions of this investigation, dams appeared to be consistently positive for both M. hyorhinis and M. hyosynoviae prior to weaning.
In contrast, higher detection was observed in piglets at week 3, in comparison to week 1 post-farrowing, with M. hyorhinis, while detection of M. hyosynoviae was remarkably minimal.
The relative risk of developing lameness in postweaning piglets was highly associated with the detection of M. hyorhinis at 3 weeks of age
This research article is available in open-access on the PlOS One website.
Continue reading “Mycoplasma hyorhinis and Mycoplasma hyosynoviae dual detection patterns in dams and piglets”
This is our new Friday rubric: every week a new Science Page from the Swine Health Monitoring Project. The previous editions of the science page are available on our website.
Key points from this week’s edition:
Conjunctivitis in pigs has been associated with various infectious agents, among them, Mycoplasma hyorhinis.
We investigated various outbreaks of conjunctivitis in pigs without apparent non-infectious predisposing factors.
Eye swabs and tissues from animals with conjunctivitis and non-affected contact pen mates were positive for M.hyorhinis by PCR and culture.
The exact role of Mycoplasmas in the development of conjunctivitis in pigs is still unclear.
The full report
with pictures of the lesions is now available.