Kusiluka LJM, Ojeniyi B, Friis NF, Kazwala RR, Kokotovic B: Mycoplasmas isolated from the respiratory tract of cattle and goats in Tanzania. Acta vet. scand. 2000,41,299-309. -A microbiological study ofthe mycoplasma flora in the respiratory tracts of cattle and goats in selected regions of Tanzania is described. In the examination of cattle, mycoplasmas were isolated from 60 (17.8%) of the 338 examined lung samples, 8 (47.1%) of the 17 lymph nodes, 4 (13.3%) of the 30 pleural fluid samples and 4 (3.9%) ofthe 103 nasal swabs examined. All the isolates were identified as Mycop lasma my coides subsp. mycoides, Small Colony type except for one isolate from pleural fluid which was identified as Mycoplasma argin ini. M. my coides subsp. myc oides, Small Colony type was isolated from samples originating from Dodoma, Iringa, Mbeya, Morogoro and Shinyanga regions where outbreaks of contagious bovine pleuropneumonia had been reported. In the examination of goats, mycoplasmas were isolated from 54 (34.0%) of the 159 examined lung samples, 41 (18. 1%) of the 226 nasal swabs and 4 (40.0%) of the 10 pleural fluid samples. The species demonstrated were My cop lasma capricolum subsp. cap ripneumoniae, M. mycoides subsp. mycoides, Small Colony type Mycoplasma ovipneumoniae and M.Caprico lum subsp. arginini. The isolation of M. capripneumoniae in the Coast and Morogoro regions confirmed the presence of contagious caprine pleuropneumonia in the regions.pleuropneumonia.