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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
NMDS using Bray–Curtis distances to compare the similarity of the manure belt swab ARG profiles between layer Farm L and broiler breeder Farm B. The analysis was based on the relative abundance of 33 ARGs detected in both farms. The ellipses indicate 95% confidence region of each cluster.