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Mycoplasma hyosynoviae Isolation from the Upper Respiratory Tract and Tonsils of Pigs

Påvisning af Mycoplasma hyosynoviae i de øvre luftveje hos svin

Acta Veterinaria Scandinavica volume 32, pages 425–429 (1991)Cite this article

Abstract

The occurrence of Mycoplasma hyosynoviae at different locations of the upper respiratory tract and tonsils of pigs was investigated in herds with problems of arthritis apparently caused by this microorganism. The isolation of M. hyosynoviae was facilitated by the use of a medium selectively suppressing the growth of Mycoplasma hyorhinis. M. hyosynoviae was cultured from 106 of 178 tonsils of slaughterhouse pigs from 8 herds but could not be isolated from the mucosa of the nasal cavity or the oral-pharyngeal area of 100 living, 10–20 weeks old pigs in 5 of the herds. The value of the selective principles in the medium appears from the circumstance that 86 of the 106 isolates were obtained despite the presence of M. hyorhinis.

It is concluded that the tonsil is a reservoir for M. hyosynoviae and is probably the location of choice for an easy demonstration of the presence of this mycoplasma in a pig herd.

Sammendrag

Forekomsten af Mycoplasma hyosynoviae på forskellige lokaliteter i de øvre luftveje hos svin blev undersøgt i besætninger med enzootisk optrædende ledbetaendelse. Der anvendtes et substrat, som specifikt er udviklet med henblik på undertrykkelse af den naermest allestedsnaervaerende og hurtigt voksende Mycoplasma hyorhinis. Det har ikke været muligt at påvise M. hyosynoviae ved dyrkninger fra slimhinden i næsehulen eller i mund-svælg området af 100 ungsvin i 5 besaetninger. Derimod påvistes M. hyosynoviae flieget hyppigt i tonsiller af slagtesvin fra de samme besaetninger og blev således fundet i 106 ud af 178 prøver fra dyr i 8 besaetninger. Værdien af det nyligt udviklede selektive princip fremgik af, at 86 af isolaterne blev opnået til trods for tilstedevaerelse af M. hyorhinis.

Det kan konkluderes, at tonsillen er et naturligt reservoir for M. hyosynoviae og at tonsiller af slagtedyr er et egnet organ til påvisning af denne mykoplasma på besætningsniveau.

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Authors and Affiliations

  1. National Veterinary Laboratory, Copenhagen and Federation of Danish Pig Producers and Slaughterhouses, DK-1790, Copenhagen V, Kjellerup, Denmark

    N. F. Friis, P. Ahrens & H. Larsen

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  1. N. F. Friis
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  2. P. Ahrens
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  3. H. Larsen
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Friis, N.F., Ahrens, P. & Larsen, H. Mycoplasma hyosynoviae Isolation from the Upper Respiratory Tract and Tonsils of Pigs. Acta Vet Scand 32, 425–429 (1991). https://doi.org/10.1186/BF03546943

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Acta Veterinaria Scandinavica

ISSN: 1751-0147