{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,19]],"date-time":"2026-08-19T18:26:16Z","timestamp":1787163976432,"version":"build-2736575974"},"reference-count":49,"publisher":"MDPI AG","issue":"14","license":[{"start":{"date-parts":[[2022,7,7]],"date-time":"2022-07-07T00:00:00Z","timestamp":1657152000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Integrated research and demonstration of green, efficient and safe breeding technology for high-quality beef cattle at the Department of Science and Technology of the Inner Mongolia Autonomous Region","award":["2020GG0043"],"award-info":[{"award-number":["2020GG0043"]}]},{"name":"Integrated research and demonstration of green, efficient and safe breeding technology for high-quality beef cattle at the Department of Science and Technology of the Inner Mongolia Autonomous Region","award":["2018YFD0501700"],"award-info":[{"award-number":["2018YFD0501700"]}]},{"name":"Integrated research and demonstration of green, efficient and safe breeding technology for high-quality beef cattle at the Department of Science and Technology of the Inner Mongolia Autonomous Region","award":["31772650"],"award-info":[{"award-number":["31772650"]}]},{"name":"Integrated research and demonstration of green, efficient and safe breeding technology for high-quality beef cattle at the Department of Science and Technology of the Inner Mongolia Autonomous Region","award":["31660677"],"award-info":[{"award-number":["31660677"]}]},{"DOI":"10.13039\/501100012166","name":"National Key R &amp; D Program of China","doi-asserted-by":"publisher","award":["2020GG0043"],"award-info":[{"award-number":["2020GG0043"]}],"id":[{"id":"10.13039\/501100012166","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100012166","name":"National Key R &amp; D Program of China","doi-asserted-by":"publisher","award":["2018YFD0501700"],"award-info":[{"award-number":["2018YFD0501700"]}],"id":[{"id":"10.13039\/501100012166","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100012166","name":"National Key R &amp; D Program of China","doi-asserted-by":"publisher","award":["31772650"],"award-info":[{"award-number":["31772650"]}],"id":[{"id":"10.13039\/501100012166","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100012166","name":"National Key R &amp; D Program of China","doi-asserted-by":"publisher","award":["31660677"],"award-info":[{"award-number":["31660677"]}],"id":[{"id":"10.13039\/501100012166","id-type":"DOI","asserted-by":"publisher"}]},{"name":"National Natural Science Foundation of China","award":["2020GG0043"],"award-info":[{"award-number":["2020GG0043"]}]},{"name":"National Natural Science Foundation of China","award":["2018YFD0501700"],"award-info":[{"award-number":["2018YFD0501700"]}]},{"name":"National Natural Science Foundation of China","award":["31772650"],"award-info":[{"award-number":["31772650"]}]},{"name":"National Natural Science Foundation of China","award":["31660677"],"award-info":[{"award-number":["31660677"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Animals"],"abstract":"<jats:p>To study shifts in the intestinal microbiota during estrus synchronization in ruminants, we characterized the intestinal microbiota in grazing Simmental cows and the possible mechanism that mediates this shift. Fourteen postpartum Simmental beef cows were synchronized beginning on day 0 (D0) with a controlled internal release device (CIDR), and cloprostenol was injected on D9 when the CIDR was withdrawn. Synchronization ended with timed artificial insemination on D12. Serum and rectal samples harvested on D0, D9, and D12 were analyzed to assess the reproductive hormones and microbiota. Reproductive hormones in the serum of the host were measured using enzyme-linked immunosorbent assay. The microbiota was characterized using 16S rRNA sequencing of the V3\u2013V4 hypervariable region, alpha diversity and beta diversity analyses (principal coordinate analysis, PCoA), cladogram of the linear discriminant analysis effect size (LEfSe) analysis, and microbiota function analysis. Levels of the reproductive hormones, except gonadotropin-releasing hormone (p &gt; 0.05), shifted among D0, D9, and D12 (p &lt; 0.05). Decreased community diversity (Chao1 and ACE) was observed on D12 compared with D0 (p &lt; 0.05). The beta diversity (PCoA) of the microbiota shifted markedly among D0, D9, and D12 (p &lt; 0.05). The LEfSe analysis revealed shifts in the intestinal microbiota communities among D0, D9, and D12 (p &lt; 0.05 and LDA cutoff &gt;3.0). The KEGG pathway analysis showed that carbohydrate metabolism, genetic information and processing, the excretory system, cellular processes and signaling, immune system diseases, and the metabolism were altered (p &lt; 0.05). Reproductive hormones (especially estradiol) were correlated with the alpha diversity indices, beta diversity indices, and an abundance of biomarkers of the shifting intestinal microbiota (p &lt; 0.05). In conclusion, the structure, composition, and function of the intestinal microbiota were shifted during estrus synchronization in a grazing Simmental cow model, and these shifts were mediated by reproductive hormones.<\/jats:p>","DOI":"10.3390\/ani12141751","type":"journal-article","created":{"date-parts":[[2022,7,7]],"date-time":"2022-07-07T22:11:47Z","timestamp":1657231907000},"page":"1751","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":19,"title":["Reproductive Hormones Mediate Intestinal Microbiota Shifts during Estrus Synchronization in Grazing Simmental Cows"],"prefix":"10.3390","volume":"12","author":[{"given":"Donglin","family":"Wu","sequence":"first","affiliation":[{"name":"College of Animal Science, Inner Mongolia Agricultural University, Hohhot 010018, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chunjie","family":"Wang","sequence":"additional","affiliation":[{"name":"College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot 010018, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Huasai","family":"Simujide","sequence":"additional","affiliation":[{"name":"College of Animal Science, Inner Mongolia Agricultural University, Hohhot 010018, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8971-002X","authenticated-orcid":false,"given":"Bo","family":"Liu","sequence":"additional","affiliation":[{"name":"College of Animal Science, Inner Mongolia Agricultural University, Hohhot 010018, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhimeng","family":"Chen","sequence":"additional","affiliation":[{"name":"College of Animal Science, Inner Mongolia Agricultural University, Hohhot 010018, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pengfei","family":"Zhao","sequence":"additional","affiliation":[{"name":"College of Animal Science, Inner Mongolia Agricultural University, Hohhot 010018, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mingke","family":"Huangfu","sequence":"additional","affiliation":[{"name":"College of Animal Science, Inner Mongolia Agricultural University, Hohhot 010018, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jiale","family":"Liu","sequence":"additional","affiliation":[{"name":"College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot 010018, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xin","family":"Gao","sequence":"additional","affiliation":[{"name":"College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot 010018, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yi","family":"Wu","sequence":"additional","affiliation":[{"name":"College of Animal Science, Inner Mongolia Agricultural University, Hohhot 010018, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaorui","family":"Li","sequence":"additional","affiliation":[{"name":"College of Animal Science, Inner Mongolia Agricultural University, Hohhot 010018, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hao","family":"Chen","sequence":"additional","affiliation":[{"name":"College of Animal Science, Inner Mongolia Agricultural University, Hohhot 010018, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Aorigele","family":"Chen","sequence":"additional","affiliation":[{"name":"College of Animal Science, Inner Mongolia Agricultural University, Hohhot 010018, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2022,7,7]]},"reference":[{"key":"ref_1","first-page":"78","article-title":"Reproductive failure and long-term profitability of spring- and fall-calving beef cows","volume":"45","author":"Boyer","year":"2020","journal-title":"J. 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