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. 2014 Sep 25;10:220. doi: 10.1186/s12917-014-0220-9

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© Dee et al.; licensee BioMed Central Ltd. 2014

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Change in PEDV Ct levels in feed samples collected across the 3 groups over time. This graph depicts the change over time in Ct values in the feed samples collected from each group of piglets. Note that the initial Ct levels detected in feed samples from both the treatment group and the positive control group were similar in magnitude on day 1; however, while Ct levels in feed fed to positive control piglets remained constant (red line), the levels in feed treated with the liquid antimicrobial product (blue line) demonstrate an increase over the 14 day study period. These data suggest that while viral load remained constant in non-treated feed, it decreased significantly in treated feed. Ct values from the negative control feed (green line) remained PCR negative throughout the study.