This test grew from ongoing Institute of Agriculture and Natural Resources research on reducing E. coli on farms, feedlots and ranches. Researchers recognized pen testing was important, initially for research and eventually for producers. Individually testing feeder cattle is impractical and expensive. This is economical and practical because you don't have to test every animal individually, you look at the whole group. We had some pretty fancy ideas, but the ropes seem to work best.
Research backs the test.
Current studies are refining its use and answering practical questions such as how many ropes are needed per pen and how to ship samples for lab testing. Earlier studies revealed when and how to test. The rope test was the main sampling tool in a large study this summer at five Midwestern feedlots. For the first time, researchers were able to test pens weekly and follow cattle throughout their feedlot period. They also collected composite manure samples from pens.