Infection dynamics of Mycoplasma hyorhinis in three commercial pig populations

M. J. Clavijo, D. Murray, S. Oliveira, Albert Rovira

Research output: Contribution to journalArticlepeer-review

28 Scopus citations


Mycoplasma hyorhinis is one of the causative agents of polyserositis and arthritis in postweaning pigs. Knowledge regarding colonisation frequency and age distribution in modern pig production is lacking. The objective of this study was to estimate the prevalence of M hyorhinis colonisation in different age groups across three commercial pig populations. Nasal swabs were collected from sows, piglets and nursery pigs of different ages. Oralfluids were collected from nursery pigs. Necropsies were performed to assess the presence of M hyorhinis-associated disease. M hyorhinis was detected in 5/60 sows in herd A, 3/60 in herd B and none in herd C. In herd A and B, the prevalence was low in preweaning piglets (∼8 per cent) and high in postweaning pigs (∼98 per cent). A total of 7/8 oralfluids tested PCR positive in herds A and B, while 1/8 tested positive in herd C. In herd C, the preweaning and postweaning prevalence was low. In herds A and B, necropsied pigs had polyserositis lesions where M hyorhinis was detected by PCR. This study showed that prevalence of M hyorhinis colonisation varies with pig age and across farms. Information generated will aid in the design and implementation of control and prevention strategies.

Original languageEnglish (US)
JournalVeterinary Record
Issue number3
StatePublished - Jul 2017

Bibliographical note

Funding Information:
This study was funded by the National Pork Board (NPB no. 10-004).

Publisher Copyright:
© The Authors.


Dive into the research topics of 'Infection dynamics of Mycoplasma hyorhinis in three commercial pig populations'. Together they form a unique fingerprint.

Cite this