Studies on Virus Diarrhea in Cattle
Abstract
These studies were undertaken in an effort to more fully describe the course and nature of virus diarrhea in cattle, one of the more recent- ly recognized bovine diseases.The clinical signs and pathological lesions observed in 20 cases of experimentally produced disease were closely analogous to those of the naturally occurring disease. In general, however, the naturally occurring disease tended to be more severe in nature than experimental infections.Experimental exposure of susceptible calves to the causative agent was followed by a diphasic temperature response in most instances.Typically there was an initial 1.0 to 3.0 F. rise in body temperature on the third to fifth day post-exposure. Leucopenia, general malaise, respiratory signs and diarrhea, associated with pathological alterations of the alimentary tract, occurred in most of the experimentally inoculated calves during and after the second phase. Clinical signs of lameness and exacerbations and remissions were also common to both field and ex- perimental disease.
Degree
Ph.D.
Subject Area
Animal sciences
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