Studies on the pathogenicity of ureaplasmas in poultry.
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Biomedical subjects
Publications and source records attributed to L Stipkovits.
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To evaluate efficacy of Tiamuline in mycoplasmosis of chickens and turkeys under controlled field conditions 2 prophylactical and 3 therapeutical trials were conducted. The compound was administered via drinking water for 3 days in comparison to Tylosin tartrate. In both prophylactical and therapeutical tests, Tiamuline showed a superior efficiacy, as measured by clinical symptoms, pathological lesions and microbiological findings. Therefore, Tiamuline can be recommended for treatment of mycoplasmosis in chickens and turkeys in a dosage of 0.025% and in a dosage of 0.0125% for prophylaxis in flocks at risk.
In the course of isolation experiments on 18 gynaecological patients Mycoplasma hominis was found in the genital organs of five and Mycoplasma pneumoniae in those of three other women. In 2 cases both agents were present. Antibodies against Mycoplasma pneumoniae, Mycoplasma hominis and Mycoplasma orale were in 8,3, respectively 1 serumtests verified. The anamnesis, diagnostics and therapy of the 3 women is reported.
Out a total number of 19 mycoplasma strain from diseased sheeps, 5 strains were used for further investigations. The 5 strains were differentiated as Mycoplasma ovipneumoniae. The relation between mycoplasma findings and the disease is discussed.
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Kidneys and sera of calves from various farms and primary kidney tissue cultures were tested for mycoplasma and acholeplasma contamination. Altogether 24 strains belonging to Mycoplasma arginini and Acholeplasma axanthum were isolated from tissue cultures, kidneys and sera. The same species were detected from lungs and peribronchial lymph nodes of calves, together with A. laidlawii, A. modicum and M. bovirhinis species. There was a close correlation between the mycoplasma content of tissue cultures, sera and kidneys and the clinical picture observed in the farm, as well as between the quality of tissue cultures and the mycoplasma content of organs, sera and tissue cultures.
Replication in vitro of the goose parovirus strain "B" was inhibited by Mycoplasma gallinarum co-infection. This effect could be prevented by continuous supplementation of cell cultures with arginine. The infection of cell cultures with Acholeplasma axanthum did not influence virus replication.
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Acholeplasma axanthum sp. was isolated from the lung of swine with catarrhal pneumonia. Clinical symptoms of respiratory disease, gross and histological lesions of pneumonia, as well as serological response were produced by intranasal inoculation of ;miniature pigs' with the supernatant of lung suspension containing Acholeplasma axanthum and by a 48 hr. broth culture of the strain.A similar picture of disease was observed in animals held in contact with the animals inoculated with untreated lung suspension. Acholeplasma axanthum was isolated from the nasal cavity, lung and peribronchial lymph nodes 7-41 days after inoculation. No lesions were observed after inoculation of pigs with the supernatant of lung suspension pretreated with oxytetracycline or chloroform, and no successful isolation of Acholeplasma axanthum could be achieved after this treatment.
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