The identification of a gene (gapA) from Mycoplasma gallisepticum with homology to the P1 cytadherence gene of Mycoplasma pneumoniae is reported. The gapA gene is a 2895 bp ORF encoding a protein with a molecular mass of 105 kDa. Nucleotide sequence analysis of the gapA gene revealed 45% homology to the M. pneumoniae P1 gene, 46% homology to the Mycoplasma genitalium MgPa gene and 47% homology ...

Jungherr (1), in 1949, noted the occurrence of encephalitis during several outbreaks of the chronic respiratory disease (CRD) of turkeys, then considered to be a virus disease, and demonstrated necrotizing and inflammatory lesions of the cerebral arteries in affected birds. Adler et al. (2), in 1954, cultivated a mycoplasma, now designated Mycoplasma gallisepticum, from the tissues of turkeys w...

Serum (n = 1,636) and egg yolk (n = 802) samples collected from hens on four commercial egg farms in Florida were tested for the presence of specific antibodies to Mycoplasma gallisepticum in a commercially available enzyme-linked immunosorbent assay. No significant differences were noted between serum and egg yolk samples with respect to distribution of positive, suspect, and negative test res...

Pathogens of veterinary and medical importance were investigated in 240 feral pigeons (Columba livia) captured in warehouses in São Paulo State, Brazil for one year. Rapid serum agglutination test (RST) was performed for the detection of antibodies against Mycoplasma synoviae, Mycoplasma gallisepticum and Salmonella Pullorum/ Gallinarum. Positive samples were submitted to hemagglutination inhib...

Maniloff, Jack (Yale University, New Haven, Conn.), Harold J. Morowitz, and Russell J. Barrnett. Ultrastructure and ribosomes of Mycoplasma gallisepticum. J. Bacteriol. 90:193-204. 1965.-The ultrastructure of Mycoplasma gallisepticum strain A5969 has been studied by electron microscopy (thin-section and negative staining), ultracentrifugation, and chemical analysis. The list of ultrastructure i...

Monkey, rat, and chicken tracheal epithelial cells, as well as monkey, rat, guinea pig, and chicken erythrocytes, adsorbed firmly to colonies of Mycoplasma pneumoniae and M. gallisepticum. Colonies of M. pulmonis also adsorbed erythrocytes but with less avidity than M. pneumoniae or M. gallisepticum; unlike the latter organisms, M. pulmonis did not adsorb tracheal epithelial cells. Colonies of ...

Immunosuppression can increase the susceptibility of chickens to other disease-causing pathogens and interfere with efficacy vaccination against those pathogens. Chicken anaemia virus (CAV) infectious bursal disease (IBDV) are common causes immunosuppression in chickens. was induced by experimental infection either CAV or IBDV assess effect on Mycoplasma gallisepticum strain ts-304 virulent M. ...

BACKGROUND: Mycoplasma gallisepticum (MG) and Mycoplasma synoviae (MS) are the most important and pathogenic mycoplasma in chicken production. The tendency of avian mycoplasma for interaction with other pathogen is well-known. Interaction within several disease-producing factors in respiratory tract exacerbate the disease and known as multicausal respiratory disease. OBJECTIVES: In recent years...

Mycoplasma gallisepticum (MG) is a persistent, highly transmissible chicken and turkey pathogen. Infections of the organism can yield significant losses in performance and associated economics to all sectors of the poultry industry. In this paper, potential and realized effects of MG on the poultry industry are discussed along with currently available and developing control methods. Available m...