Veterinary and Biomedical Sciences, Department of


Date of this Version



Thesis (M.S.)—University of Nebraska—Lincoln, 1986. Department of Veterinary Science.


Copyright 1986 Douglas Lee Varner. Used by permission.


Within the last decade a new etiologic agent has been identified as a possible cause of diarrhea in humans and domestic animals—that being the protozoan parasite Cryptosporidium. The purpose of this study was to determine the incidence and distribution of Cryptosporidium in the state of Nebraska, to determine if Cryptosporidium occurs more frequently in association with other enteropathogens and to determine about the relation of scouring in the calves to infection with Cryptosporidium. A total of 620 fecal samples from 334 dairy calves from 71 herds in Nebraska were examined for cyptosporidial oocysts using the Sheather’s sugar flotation technique. Results of this study suggest an association between infection with Crypstosporidium and scouring.

Advisor: Donald L. Ferguson.