Environmental Load ofCryptosporidium parvumOocysts from Cattle Manure in Feedlots from the Central and Western United States
- 1 January 2006
- journal article
- Published by Wiley in Journal of Environmental Quality
- Vol. 35 (1), 200-206
- https://doi.org/10.2134/jeq2005.0099
Abstract
The first step in assessing the risk of water contamination by Cryptosporidium parvum oocysts from feedlot cattle (Bos taurus) production systems is to quantify the number of C. parvum oocysts present in the fecal material deposited by feedlot cattle. Our primary objective for this project was to estimate the daily environmental load of C. parvum oocysts in fecal material deposited by feedlot cattle from across the central and western USA. Our secondary goal was to genotype isolates of C. parvum from feedlot cattle to help facilitate proper identification of mammalian sources of waterborne C. parvum Based on 5274 fecal samples from 22 feedlots in seven states (California, Washington, Colorado, Oklahoma, Texas, Nebraska, and South Dakota), we estimated a point prevalence of C. parvum of 0.99 to 1.08% in fecal material from feedlot pens from a wide range of climates and a diverse range of feedlot management systems. On average, fresh fecal material from throughout feedlot systems (recent arrivals to nearing slaughter) contained about 1.3 to 3.6 oocysts/g feces, which roughly translates to about 2.8 × 104 to 1.4 × 105 oocysts/animal perday. Copyright © 2006. ASA, CSSA, SSSAFunding Information
- USEPA (R82-8038-010)
This publication has 43 references indexed in Scilit:
- Dispersion and Transport of Cryptosporidium Oocysts from Fecal Pats under Simulated Rainfall EventsApplied and Environmental Microbiology, 2004
- Lack of Detectable Shedding of Cryptosporidium parvum Oocysts by Periparturient Dairy CattleJournal of Parasitology, 2003
- Improved Quantitative Estimates of Low Environmental Loading and Sporadic Periparturient Shedding ofCryptosporidium parvumin Adult Beef CattleApplied and Environmental Microbiology, 2003
- Transport ofCryptosporidium parvumOocysts through Vegetated Buffer Strips and Estimated Filtration EfficiencyApplied and Environmental Microbiology, 2002
- An examination of risk factors associated with beef cattle shedding pathogens of potential zoonotic concernEpidemiology and Infection, 2001
- Prevalence of Cryptosporidium, Giardia and Eimeria infections in post-weaned and adult cattle on three Maryland farmsVeterinary Parasitology, 2000
- NATURAL TRANSMISSION OFCRYPTOSPORIDIUM PARVUMBETWEEN DAMS AND CALVES ON A DAIRY FARMJournal of Parasitology, 2000
- Environmental and Geographical Factors Contributing to Watershed Contamination with Cryptosporidium parvum OocystsEnvironmental Research, 2000
- Estimating Maximum Possible Environmental Loading Amounts of Cryptosporidium parvum Attributable to Adult Beef CattleQuantitative Microbiology, 2000
- Differentiation between human and animal isolates of Cryptosporidium parvum using molecular and biological markers.Zeitschrift für Parasitenkunde, 1998