A New Aspect of the Epidemiology of Parasitic Bronchitis in Calves
For many years it has been considered that clinical outbreaks of parasitic bronchitis arose from two sources. First, that a proportion of cattle in their second or subsequent year were lightly infected with adult lungworms and contaminated the pasture with larvae immediately preceding the use of the pasture in the same year by susceptible calves.
KeywordsClinical Outbreak Experimental ParaSitology Lungworm Infection Subsequent Necropsy Larva Overwinter
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