Eradication of ovine progressive pneumonia from sheep flocks.
Two management methods for controlling ovine progressive pneumonia in sheep were evaluated. By a test and cull method, wherein seropositive sheep were culled from the flock, the causative virus was eradicated from a closed flock and controlled in an open flock. By an isolate-and-test method, wherein lambs were removed from infected ewes before nursing and reared in isolation, the virus was eradicated in 1 of 2 attempts to establish virus-free flocks. It was concluded that either method should be effective in controlling ovine progressive pneumonia. Results indicated that annual serologic monitoring of a virus-free flock would be necessary to ensure that the virus-free status is maintained.
D000818:Animals; D000914:Antibodies, Viral / Q000032:analysis; D005260:Female; D011021:Pneumonia, Progressive Interstitial, of Sheep / Q000276:immunology / Q000517:prevention & control*; D011247:Pregnancy; D012756:Sheep; D014790:Visna-maedi virus / Q000276:immunology
D000914:Antibodies, Viral