Cryptosporidium spp. were detected in 25 of 56 pig slurry samples from 33 Irish farms by PCR and DNA sequencing. The organisms detected included C. suis, Cryptosporidium pig genotype II, and C. muris. We concluded that Cryptosporidium oocysts can persist in treated slurry and potentially contaminate surface water through improper discharge or uncontrolled runoff.
Xiao, LH., Moore, JE., Ukoh, U., Gatei, W., Lowery, C., Murphy, TM., ... Rao, JR. (2006). Prevalence and identity of Cryptosporidium spp. in pig slurry. Applied and Environmental Microbiology, 72(6), 4461-4463. https://doi.org/10.1128/AEM.00370-06