| epidemiology of oestrus ovis infection of sheep in the highveld of zimbabwe. | during a period of 13 months, 507 heads of sheep, obtained from an abattoir near harare, were examined for infection with oestrus ovis larvae. the prevalence of infection varied from 6 to 52%, the highest being in november and the lowest in april. the mean annual larval burden was 1.12. the maximum number of larvae recovered from a single head was 57 in the month of november. two larval peaks were observed, the first and highest in november and the second in august/september. some flies are pres ... | 1989 | 2763447 |
| mycoplasma ovipneumoniae infection in zimbabwean goats and sheep. | the prevalence of mycoplasma ovipneumoniae (mo) in three communal lands flocks of goats on the outskirts of harare is described. in a single sampling of nasal swabs from 172 randomly selected, apparently healthy goats, 112 animals were identified as carriers of mo. the three flocks had a history of occasional deaths, following chronic and subacute pneumonia associated with isolation of mo as the only identifiable pathogen. attempts to induce clinical pneumonia in groups of 6 to 8-week-old kids a ... | 1992 | 1430348 |