The Establishment of Ovine Progressive Pneumonia (Lungers) Free Sheep From Infected Herds

摘要: Progressive pneumonia is a chronic disease of adult sheep which may cause serious financial losses in infected flocks sheep. Symptoms include slow progressive weight loss, physical weakness, lack fever, increasing severe respiratory distress with cough and labored breathing leading to death ultimately. It's first reference was 1923 Montana. the North Dakota Agricultural Experiment Station imported 26 Border Leicester ewes from Canada 1970-71. Also, they purchased few Columbia Colorado 1971. Due high incidence Ovine Pneumonia these that semi-confined enterprises mightexperience likewise, an experiment initiated 1974 attempt establishment were free this disease. The authors give us procedures used experiment. immediate isolation rearing newborn lambs away parental stock be means reserving valuable bloodlines pure breeds.