247.In Laying Hens, The Ovaries Are Affected In Many Instances (Sero¬Fibrinous Oophoritis), Resulting In Reduced Egg Production. The Diagnosis Is Based Upon The Distinctive Clinico-Morphological Signs. SHS Should Be Differentiated From Mycoplasma And Pasteurella Infections And The Skin Form Of Aspergillosis. Prevention - Improvement Of The Microclimate Of Premises, Use Of Live And Killed Vaccines.
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