{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T09:29:45Z","timestamp":1785403785945,"version":"3.56.0"},"reference-count":67,"publisher":"American Society for Microbiology","issue":"7","license":[{"start":{"date-parts":[[2025,7,1]],"date-time":"2025-07-01T00:00:00Z","timestamp":1751328000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2025,7,1]],"date-time":"2025-07-01T00:00:00Z","timestamp":1751328000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.asm.org\/non-commercial-tdm-license"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["32372850"],"award-info":[{"award-number":["32372850"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["32260818"],"award-info":[{"award-number":["32260818"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Gansu Provincial Major Science and Technology project","award":["22ZD6NC069"],"award-info":[{"award-number":["22ZD6NC069"]}]}],"content-domain":{"domain":["journals.asm.org"],"crossmark-restriction":true},"short-container-title":["Microbiol Spectr"],"published-print":{"date-parts":[[2025,7]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title\/>\n                    <jats:p>\n                      Fat deposition is a crucial economic trait during sheep growth and development, closely linked to economic returns. Current research on sheep\u2019s digestive tract predominantly focuses on the rumen, but the composition of the cecal microbiota and its relationship with host fat deposition remains largely unexplored. In this study, we sequenced the cecal microbiota of 60 Hu sheep, exhibiting marked differences in traits. The most abundant species in the sheep cecum were Firmicutes and Bacteroidota. Statistical analyses revealed significant differences in microbial community structures among different fat-deposition groups (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      &lt; 0.05). Using a random forest regression model and linear regression, 15 microbial biomarkers, including\n                      <jats:italic toggle=\"yes\">Lachnospiraceae_NK3A20_group<\/jats:italic>\n                      ,\n                      <jats:italic toggle=\"yes\">Turicibacter<\/jats:italic>\n                      , and\n                      <jats:italic toggle=\"yes\">Bacteroides<\/jats:italic>\n                      , were identified as key contributors to fat deposition. Additionally, volatile fatty acids (VFAs) in the cecum and biochemical indices in serum were measured. Acetic acid was the most abundant VFA in the cecum, while isobutyric acid levels were significantly higher in the low-fat group than in other groups (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      &lt; 0.05). Serum triglyceride (TG) levels were significantly higher in the high-fat group (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      &lt; 0.05). Correlation analysis revealed a significant association between\n                      <jats:italic toggle=\"yes\">Lachnospiraceae_NK3A20_group<\/jats:italic>\n                      and acetic acid levels, as well as between TG levels and fat deposition traits (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      &lt; 0.05). TG levels were negatively correlated with acetic acid concentrations (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      &lt; 0.05). These findings suggest that the cecal microbiota influences fat deposition in sheep, potentially via the VFAs-TG metabolic pathway.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>IMPORTANCE<\/jats:title>\n                    <jats:p>Compared with muscle development, fat deposition consumes more energy, and controlling the fat deposition process can effectively reduce energy waste. Current research on rumination mainly focuses on the rumen but lacks research on the hindgut. This study identifies differences in the cecal microbiota of sheep with varying fat deposition levels and highlights significant correlations between specific microorganisms, cecal metabolites, and host traits. Therefore, the regulation of cecal microorganisms can help improve the fat deposition characteristics of sheep.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1128\/spectrum.01488-24","type":"journal-article","created":{"date-parts":[[2025,5,22]],"date-time":"2025-05-22T09:00:43Z","timestamp":1747904443000},"update-policy":"https:\/\/doi.org\/10.1128\/asmj-crossmark-policy-page","source":"Crossref","is-referenced-by-count":5,"title":["Exploring the cecal microbial community associated with fat deposition in sheep and its possible pathways of action"],"prefix":"10.1128","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1281-5157","authenticated-orcid":false,"given":"Jiangbo","family":"Cheng","sequence":"first","affiliation":[{"name":"The State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University","place":["Lanzhou, 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