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Background Gastrointenstinal nematodes (GIN) present a serious challenge to the health and productivity of grazing stock around the globe. However, the epidemiology of GIN transmission remains poorly understood in northern climates. Combining use of serological diagnostics, GIS mapping technology, and geospatial statistics, we evaluated ecological covariates of spatial and temporal variability in...
Sera from calves originating on a 17,000ha ranch in southeastern Alberta, were collected over three consecutive years (2008–2010) at weaning and analysed for the presence of anti-Ostertagia antibodies using the SVANOVIR ® Ostertagia ostertagi-Ab ELISA kit. Faecal samples taken at the same time were analysed for presence of nematode eggs using the modified Wisconsin faecal flotation technique...
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