Evaluation ofMollicutesMicroorganisms in Respiratory Disease of Cattle and Their Relationship to Clinical Signs

• DOI: 10.1111/jvim.14721
• Publication Date: 2017-06-11T04:06:42Z
• Authors: G. Tortorelli; N. Carrillo Gaeta; B.L. Mendonça Rib...; L. Miranda Marques; J. Timenetsky; L. Gregory
• Keywords: Bovine Respiratory Disease; Dispar

Background Bovine respiratory disease ( BRD ) is an important problem in cattle production that responsible for economic losses dairy herds. Mycoplasma spp. are described as etiological agent of . Hypothesis To evaluate the occurrence most mycoplasmas lower tract healthy and relationship to clinical signs Animals Sixty young were classified (n = 32) or showing 28). Methods Tracheal lavage samples collected added tubes containing Hayflick media. identified by presence “fried egg” like colonies, biochemical tests polymerase chain reaction PCR ). Occurrence Mollicutes, M. bovis, mycoides subsp. SC dispar was evaluated. The association between also Results Colonies obtained from a 1‐year‐old calf only. However, species identification not possible. Mollicutes P .035) .036) more common cattle. crackle .057) significant. associated tachypnea .045) mixed dyspnea .003). Relationships heart rate .062) Conclusions importance results confirmed mycoplasma etiologic suggested part microbiota its possible role development