{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,30]],"date-time":"2026-01-30T07:26:55Z","timestamp":1769758015625,"version":"3.49.0"},"reference-count":58,"publisher":"CSIRO Publishing","issue":"4","license":[{"start":{"date-parts":[[2025,11,18]],"date-time":"2025-11-18T00:00:00Z","timestamp":1763424000000},"content-version":"vor","delay-in-days":288,"URL":"https:\/\/doi.org\/10.1071\/journalslicense"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2025,2,18]]},"abstract":"<jats:sec>\n                    <jats:title>Context<\/jats:title>\n                    <jats:p>Subfertility has a negative impact on the productivity of beef cow herds; thus, it is relevant to unravel the mechanisms.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Aims<\/jats:title>\n                    <jats:p>To study follicular development, body composition, concentrations of progesterone and metabolic hormones and their gene expression in the endometrium during the oestrus cycle.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Fertile and subfertile Hereford cows were classified at 25 (n\u00a0=\u00a084) and 60 (n\u00a0=\u00a025) months old, as (1) fertile, pregnant at first insemination at 25\u00a0months, that became pregnant\u00a0more than three of five times at 60\u00a0months (n\u00a0=\u00a05), or (2) subfertile, i.e. failed to became pregnant during three inseminations at 25\u00a0months, that became pregnant at fewer than two of the five opportunities at 60\u00a0months (n\u00a0=\u00a06).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Key results<\/jats:title>\n                    <jats:p>Fertile cows had greater concentrations of insuling-like growth factor 1 (IGF-1), leptin and adiponectin (P\u00a0&amp;lt;\u00a00.05), associated with differences in body composition. Insulin and progesterone concentrations were lower during the mid\u2013late luteal phase (P\u00a0&amp;lt;\u00a00.05) in fertile than subfertile cows, with no impact on follicle dynamics. At dissection, healthy follicles from fertile cows tended (P\u00a0&amp;lt;\u00a00.1) to have more granulosa cells and higher concentrations of IGF-1 in the follicular fluid. Fertile cows had a lower (P\u00a0&amp;lt;\u00a00.05) endometrial IGF-1\u00a0mRNA expression, but tended to have increased (P\u00a0&amp;lt;\u00a00.1) progesterone and adiponectin 2 receptor expression on Day 7 of the oestrus cycle.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Differences in progesterone and metabolic hormones in plasma and follicular fluid and their endometrial expression are associated with the success of pregnancy in beef cows.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Implications<\/jats:title>\n                    <jats:p>Strategies to improve the follicle and endometrial microenvironments are needed to improve the productivity of beef herds.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1071\/rd24160","type":"journal-article","created":{"date-parts":[[2025,2,2]],"date-time":"2025-02-02T18:03:07Z","timestamp":1738519387000},"source":"Crossref","is-referenced-by-count":1,"title":["Folicular dynamics, endocrine profiles and endometrial gene expression in fertile and subfertile cows"],"prefix":"10.1071","volume":"37","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8647-4802","authenticated-orcid":true,"given":"C.","family":"Vi\u00f1oles","sequence":"first","affiliation":[{"name":"ACentro de Salud Reproductiva de Rumiantes en Sistemas Agroforestales, Casa de la Universidad de Cerro Largo, Centro Universitario Regional Noreste, Universidad de la Rep\u00fablica, Luis Alberto de Herrera 639, Melo, Cerro Largo, Uruguay."},{"name":"BInstituto Nacional de Investigaci\u00f3n Agropecuaria, km 386, Ruta 5, Tacuaremb\u00f3, Uruguay."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"A.","family":"\u00c1lvez","sequence":"additional","affiliation":[{"name":"BInstituto Nacional de Investigaci\u00f3n Agropecuaria, km 386, Ruta 5, Tacuaremb\u00f3, Uruguay."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"X.","family":"Gonz\u00e1lez","sequence":"additional","affiliation":[{"name":"BInstituto Nacional de Investigaci\u00f3n Agropecuaria, km 386, Ruta 5, Tacuaremb\u00f3, Uruguay."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"A.","family":"Meikle","sequence":"additional","affiliation":[{"name":"CFacultad de Veterinaria, Universidad de la Rep\u00fablica, Ruta 8, km 18, Montevideo, Uruguay."}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"67","published-online":{"date-parts":[[2025,2,3]]},"reference":[{"key":"2025111816250016900_R1","doi-asserted-by":"publisher","first-page":"918","DOI":"10.1095\/biolreprod.105.041483","article-title":"Impact of nutrition on oocyte quality: cumulative effects of body composition and diet leading to hyperinsulinemia in cattle.","volume":"73","author":"Adamiak","year":"2005","journal-title":"Biology of Reproduction"},{"key":"2025111816250016900_R2","doi-asserted-by":"publisher","first-page":"627","DOI":"10.1530\/jrf.0.0960627","article-title":"Effect of progesterone on ovarian follicles, emergence of follicular waves and circulating follicle-stimulating hormone in heifers.","volume":"96","author":"Adams","year":"1992","journal-title":"Journal of Reproduction Fertility"},{"key":"2025111816250016900_R3","doi-asserted-by":"publisher","first-page":"425","DOI":"10.1095\/biolreprod40.2.425","article-title":"Changes in ovine conceptus and endometrial function following asynchronous embryo transfer or administration of progesterone.","volume":"40","author":"Ashworth","year":"1989","journal-title":"Biology of Reproduction"},{"key":"2025111816250016900_R4","doi-asserted-by":"publisher","first-page":"798","DOI":"10.1111\/rda.12981","article-title":"Endometrial gene expression in primiparous dairy cows at the end of the voluntary waiting period is affected by nutrition: total mixed ration vs increasing levels of herbage allowance.","volume":"52","author":"Astessiano","year":"2017","journal-title":"Reproduction in Domestic Animals"},{"key":"2025111816250016900_R5","unstructured":"B\u00e5ge R, Rodr\u00edguez-Mart\u00ednez H (2002) On repeat breeding in dairy heifers. 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