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The article presents a study that examines the presence of Mycobacterium marinum, M. peregrinum, M. fortuitum and M. abscessus in aquarium fish. Diseased fish showed clinical signs including lethargy, loss of appetite, cachexia, living alone in the corner of the aquarium, depigmentation and exophthalmia. Mycobacteria were kept in isolation on Lowenstein-Jensen egg medium (LJA) and incubated for ten weeks.

Summary This study was aimed at determining the cause of the diseases in five horses exhibiting symptoms of fever, joint oedema and ataxia and thrombocytopenia. The PCR technique revealed the presence in the blood of 16S RNA Anaplasma/Ehrlichia spp. genetic material. DNA amplification with primers EHR 521 and EHR 747 gave a product with a size of 247 bp. The sequence of the PCR product obtained showed a 97.6-99.6% similarity with a sequence of a fragment of 16S RNA Anaplasma phagocytophilum, gene number from GenBank. Intravenous administration of oxytetracycline at a dose of 8 mg/kg of body mass for 7 days resulted in a gradual recovery. [ABSTRACT FROM AUTHOR]