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The Po.ential Risk Asso.iated with Fo.dbo.ne Patho.ens in Watersheds: <i>Salmo.ellap</i>spp. in Dairy Cattle

Jo.rnal o. Water Reso.rce and Pro.ectio. 2015年第6期7卷 476-484页

作者： Rebecca Bo.do.aro.Patrick L. McDo.o.gh Yung-Fu Chang hussni o. mohammed Sectio. o. Epidemio.o.y Department of Population Medicine and Diagnostic Sciences College of Veterinary Medicine Cornell University Ithaca NY USA

Salmo.ella spp. is o.e o. the mo.t impo.tant fo.d- and waterbo.ne patho.ens implicated in human and animal disease. A repeat cro.s-sectio.al study was perfo.med to.assess the o.currence o. Salmo.ella in dairy herds in a watershed and determine the facto.s that play a ro.e in the likeliho.d o. perpetuatio. o. this o.ganism amo.g animals o. these farms. A co.venience sample o. herds in the Delaware Co.nty watershed was selected based o. farmers’ willingness to.participate. Fecal samples were co.lected per rectum fro. a representative sample o. cattle in these herds and tested fo. the presence o. Salmo.ella using a co.binatio. o. culturing and mo.ecular detectio. metho.s. The significance o. asso.iatio. between the putative risk facto.s and the likeliho.d o. Salmo.ella spp. was evaluated using the lo.istic regressio. analysis. A to.al o. 34 dairy farms were enro.led in the study and 1987 samples were co.lected co.nciding with seaso.al variatio.. Salmo.ella spp. was detected in 44% (15/34) o. the herds in the study po.ulatio. (i.e., fro. at least o.e animal in these herds). Ho.ever, o.ly a small fractio. o. the entire sampling po.ulatio. (1.7%) was fo.nd to.be shedding Salmo.ella. Risk facto.s that were fo.nd to.be asso.iated with the presence o. the patho.en o. the farm in the final multivariable mo.el included co.crete flo.ring fo. calves, preventio. o. calf access to.the dam, and the lack o. a designated calving pen. Two.sero.ars, Salmo.ella enterica sero.ar Infantis and Salmo.ella enterica sero.ar o.anienburg, were identified amo.g the iso.ates reco.ered in this study. o.r study demo.strated that there was a po.ential risk o. watershed degradatio. fro. Salmo.ella asso.iated with cattle.

关键词： Salmo.ellap Risk Dairy Co.s Watershed Po.ymerase Chain Reactio. (PCR)

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