{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,1]],"date-time":"2026-09-01T13:23:42Z","timestamp":1788269022351,"version":"build-2803163510"},"reference-count":77,"publisher":"American Society for Microbiology","issue":"9","license":[{"start":{"date-parts":[[2026,9,1]],"date-time":"2026-09-01T00:00:00Z","timestamp":1788220800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,9,1]],"date-time":"2026-09-01T00:00:00Z","timestamp":1788220800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.asm.org\/non-commercial-tdm-license"}],"content-domain":{"domain":["journals.asm.org"],"crossmark-restriction":true},"short-container-title":["Microbiol Spectr"],"published-print":{"date-parts":[[2026,9,1]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title\/>\n                    <jats:p>\n                      Digital dermatitis (DD) is the leading cause of lameness in cattle, posing major animal welfare and economic concerns. Effective prevention strategies are increasingly important given emerging antimicrobial resistance associated with common DD treatments. Supplementation with\n                      <jats:italic toggle=\"yes\">Saccharomyces cerevisiae<\/jats:italic>\n                      fermentation postbiotics (SCFP) has been shown to enhance innate immunity and reduce DD lesion development. This study evaluated the effect of a commercial SCFP supplement on the microbial composition of DD lesions using shotgun metagenomic sequencing to characterize microbial communities and associated antimicrobial resistance genes. Beta diversity analysis revealed that stage M4 DD lesions from SCFP-supplemented cows had a trend for different microbial compositions compared with controls (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = 0.051). At the genus level, M2 lesions were found to have statistically significant lower abundance of the genera\n                      <jats:italic toggle=\"yes\">Desulfovibrio<\/jats:italic>\n                      ,\n                      <jats:italic toggle=\"yes\">Pseudomonas<\/jats:italic>\n                      ,\n                      <jats:italic toggle=\"yes\">Staphylococcus<\/jats:italic>\n                      ,\n                      <jats:italic toggle=\"yes\">Anaerotignum<\/jats:italic>\n                      ,\n                      <jats:italic toggle=\"yes\">Caproicibacterium<\/jats:italic>\n                      , and\n                      <jats:italic toggle=\"yes\">Bacteroides<\/jats:italic>\n                      in the SCFP treatment group compared with the control (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      &lt; 0.05). M2 lesions from the SCFP treatment group were also found to have statistically significant higher abundance of the genera\n                      <jats:italic toggle=\"yes\">Fusobacterium<\/jats:italic>\n                      ,\n                      <jats:italic toggle=\"yes\">Citricoccus<\/jats:italic>\n                      ,\n                      <jats:italic toggle=\"yes\">Listeria<\/jats:italic>\n                      , and\n                      <jats:italic toggle=\"yes\">Fundicoccus<\/jats:italic>\n                      as compared with the control (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      &lt; 0.05). M4 lesions were found to have statistically significant lower abundance of the genera\n                      <jats:italic toggle=\"yes\">Blautia<\/jats:italic>\n                      and\n                      <jats:italic toggle=\"yes\">Petrimonas<\/jats:italic>\n                      in the SCFP treatment group compared with the control (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      &lt; 0.05). At the species level, M2 lesions were found to have statistically significant lower abundance of the species\n                      <jats:italic toggle=\"yes\">Desulfovibrio sp. G11<\/jats:italic>\n                      ,\n                      <jats:italic toggle=\"yes\">Anaerotignum sp. MB30-C6<\/jats:italic>\n                      ,\n                      <jats:italic toggle=\"yes\">Caproicibacterium argilliputei<\/jats:italic>\n                      , and\n                      <jats:italic toggle=\"yes\">Prevotella intermedia<\/jats:italic>\n                      in the SCFP treatment group compared with the control (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      &lt; 0.05). M2 lesions from the SCFP treatment group were also found to have statistically significant higher abundance of the species\n                      <jats:italic toggle=\"yes\">Fundicoccus culcitae<\/jats:italic>\n                      and\n                      <jats:italic toggle=\"yes\">Helcococcus ovis<\/jats:italic>\n                      as compared with the control (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      &lt; 0.05). Metagenomic analysis identified antimicrobial resistance genes associated with multiple antibiotics commonly used for DD treatment, including tetracyclines, lincosamides, and pleuromutilins. These findings demonstrate the potential for SCFP supplementation to alter the microbial composition of DD lesions while highlighting the ongoing concerns regarding antimicrobial resistance in DD management.\n                    <\/jats:p>\n                    <jats:sec>\n                      <jats:title>IMPORTANCE<\/jats:title>\n                      <jats:p>\n                        Digital dermatitis (DD) causes substantial economic loss and welfare concerns in cattle production systems worldwide. Our findings show that dietary supplementation with\n                        <jats:italic toggle=\"yes\">Saccharomyces cerevisiae<\/jats:italic>\n                        fermentation postbiotics (SCFP) has the potential to alter the microbial ecology of DD lesions. Importantly, this work identifies antimicrobial resistance genes within DD lesions, underscoring the limitations of antibiotic-based control strategies. By linking nutritional supplementation to changes in microbial communities and resistance gene profiles, this study advances understanding of non-antibiotic approaches to disease mitigation and supports the development of sustainable, microbiome-informed management practices in food animal production.\n                      <\/jats:p>\n                    <\/jats:sec>\n                  <\/jats:sec>","DOI":"10.1128\/spectrum.00304-26","type":"journal-article","created":{"date-parts":[[2026,7,21]],"date-time":"2026-07-21T13:00:16Z","timestamp":1784638816000},"update-policy":"https:\/\/doi.org\/10.1128\/asmj-crossmark-policy-page","source":"Crossref","is-referenced-by-count":0,"title":["Effect of\n                    <i>Saccharomyces cerevisiae<\/i>\n                    fermentation postbiotic supplementation on metagenomics of digital dermatitis lesions in lactating Holstein 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