epidemiological studies on ovine brucellosis in selected ram flocks.the epidemiology of ovine brucellosis was investigated in 6 ram flocks in which anomalous reactions to the complement fixation test was recorded. it was shown that rams can become infected as young as 4 months of age. naturally infected animals have an epididymitis and excrete brucella ovis in their semen or they may only show a serological response for a short time then recover. the base line titres of chronically infected animals stay relatively constant. the importance of abortive infection a ...19827150131
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