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. 2003 Dec;89(6):1234-6.
doi: 10.1645/GE-3192RN.

Lack of detectable shedding of Cryptosporidium parvum oocysts by periparturient dairy cattle

E R Atwill  1 , M das G C Pereira
Affiliations

Lack of detectable shedding of Cryptosporidium parvum oocysts by periparturient dairy cattle

E R Atwill et al. J Parasitol. 2003 Dec.

Abstract

We examined whether periparturient dairy cattle shed Cryptosporidium parvum oocysts within 12 hr of calving on 3 commercial dairy farms endemic for calfhood cryptosporidiosis. Using a diagnostic method that can detect as few as 1 oocyst per gram of feces, we found no evidence of C. parvum oocysts in 86 fecal samples collected within 12 hr of calving from 43 dairy cows.

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