title: [Haemoplasma infection in a dairy cow].
abstract: The present work describes the clinical and laboratory examination as well as the treatment of a 7-year-old local dairy breed cow presented with reduced appetite, decreasing milk yield and striking yellowish discoloured skin and mucosa. The laboratory examination revealed a high degree regenerative anaemia and hyperbilirubinaemia. The bovine haemotrophic mycoplasma species  Mycoplasma wenyonii  and 'Candidatus Mycoplasma haemobos' were detected in the blood by PCR. Treatment with oxytetracycline rapidly improved the general condition, and milk production was increased. In a follow-up study, blood samples of all 23 animals from the same herd were examined. Fifteen cows were found to be infected with both haemoplasma species, three animals were only infected with 'Candidatus Mycoplasma haemobos' and one animal only with  Mycoplasma wenyonii. Two out of three tested calves were positive for 'Candidatus Mycoplasma haemobos'. Except for the above described anaemic cow, all other animals were clinically healthy.
authors.affiliation: Departement für Nutztiere, Abteilung Ambulanz und Bestandesmedizin, Vetsuisse-Fakultät Universität Zürich, Winterthurerstrasse 260, CH-8057 Zürich, Schweiz. rbaggenstos@vetclinics.uzh.ch
authors.forename: R
authors.initials: R
authors.lastname: Baggenstos
authors.forename: B
authors.initials: B
authors.lastname: Wenzinger
authors.forename: M L
authors.initials: ML
authors.lastname: Meli
authors.forename: R
authors.initials: R
authors.lastname: Hofmann-Lehmann
authors.forename: G
authors.initials: G
authors.lastname: Knubben-Schweizer
mesh_terms: D000818:Animals; D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D002417:Cattle; D002418:Cattle Diseases / Q000175:diagnosis / Q000188:drug therapy* / Q000382:microbiology*; D003612:Dairying; D005260:Female; D009174:Mycoplasma / Q000302:isolation & purification*; D009175:Mycoplasma Infections / Q000175:diagnosis / Q000188:drug therapy / Q000382:microbiology / Q000662:veterinary*; D010118:Oxytetracycline / Q000627:therapeutic use
chemical_list: D000900:Anti-Bacterial Agents; D010118:Oxytetracycline