[Mycoplasma carrier state in the respiratory apparatus of sheep and lambs]

Mycoplasma and acholeplasma organisms (M. ovipneumoniae, M. arginini, etc.) were isolated from clinically normal lambs and sheep as well as from lambs with a respiratory disease. M. ovipneumoniae was more frequently isolated than M. arginini, and was found in higher percent during the winter. Both sheep and lambs of the Romanovska breed proved more susceptible, however, lambs of local breeds, aged 30-40 days also contracted the disease in conditions of overpopulation and higher humidity. The respiratory diseases were complicated with P. haemolytica infections.