PATHOGENESIS OF LESIONS PRODUCED BY EIMERIA-ZUERNII IN CALVES

  • 1 January 1977
    • journal article
    • research article
    • Vol. 41  (3) , 338-344
Abstract
The pathogenesis of the lesions caused by E. zuernii in calves is described. The gross lesions and the development and resolution of the microscopic lesions of the large intestine are described in detail. The development of the 1st asexual generation causes few changes in the lower ileum. The 2nd asexual generation and gametogony of E. zuernii appear to be the pathogenic stages of its development. It is during these stages of the life cycle that epithelium is lost, capillaries are exposed and that hemorrhage into the lumen of the large intestine occurs. Resolution of these lesions takes place in approximately 10 days in calves which survive.