{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T11:22:54Z","timestamp":1785410574167,"version":"3.56.0"},"reference-count":57,"publisher":"MDPI AG","issue":"14","license":[{"start":{"date-parts":[[2026,7,21]],"date-time":"2026-07-21T00:00:00Z","timestamp":1784592000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100002507","name":"Kangwon National University","doi-asserted-by":"publisher","award":["202404590001"],"award-info":[{"award-number":["202404590001"]}],"id":[{"id":"10.13039\/501100002507","id-type":"DOI","asserted-by":"publisher"}]},{"award":["202404590001"],"award-info":[{"award-number":["202404590001"]}],"id":[{"id":"https:\/\/ror.org\/01mh5ph17","id-type":"ROR","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003725","name":"National Research Foundation of Korea","doi-asserted-by":"publisher","award":["RS-2023-00252130"],"award-info":[{"award-number":["RS-2023-00252130"]}],"id":[{"id":"10.13039\/501100003725","id-type":"DOI","asserted-by":"publisher"}]},{"award":["RS-2023-00252130"],"award-info":[{"award-number":["RS-2023-00252130"]}],"id":[{"id":"https:\/\/ror.org\/013aysd81","id-type":"ROR","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Animals"],"abstract":"<jats:p>Selenium is an essential trace mineral that is involved in several biological processes, including antioxidant defense, immune function, and reproductive efficiency. Therefore, this study aimed to investigate the effects of selenium supplementation in Hanwoo cows on maternal reproductive performance and physiological responses, as well as the early growth and metabolic profiles of the offspring. Hanwoo cows (n = 30) were assigned to control (no supplement), sodium selenite (SS; 0.3 ppm\/head\/day), and hydroxy-selenomethionine (OH-SeMet; 0.3 ppm\/head\/day) treatment groups. Maternal reproductive performance and calf growth were examined. Cows in the OH-SeMet group had a significantly shorter postpartum interval and 4.25-fold higher conception rates than those in the control and SS groups. Plasma selenium concentrations were significantly higher in the OH-SeMet group at 3 months postpartum, with improved antioxidant status. Calves from OH-SeMet-supplemented cows had greater birth weights and higher plasma selenium, total immunoglobulin, and ghrelin concentrations. In addition, ruminal microbiota analysis revealed an increased Firmicutes-to-Bacteroidetes ratio in cows supplemented with OH-SeMet. In conclusion, dietary organic selenium supplementation in Hanwoo cows improved maternal reproductive efficiency and antioxidant status and promoted early growth in their offspring.<\/jats:p>","DOI":"10.3390\/ani16142258","type":"journal-article","created":{"date-parts":[[2026,7,21]],"date-time":"2026-07-21T15:17:52Z","timestamp":1784647072000},"page":"2258","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Effect of Sodium Selenite and Hydroxy-Selenomethionine Supplementation in Hanwoo Cows on Reproductive Performance and Growth Performance of Their Offspring"],"prefix":"10.3390","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0009-0007-0515-3670","authenticated-orcid":false,"given":"Young-Lae","family":"Kim","sequence":"first","affiliation":[{"name":"Department of Animal Science, Kangwon National University, Chuncheon 24341, Republic of Korea"},{"name":"Dairy Science Division, National Institute of Animal Science, Cheonan 31000, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0586-6212","authenticated-orcid":false,"given":"So-Hee","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Animal Science, Kangwon National University, Chuncheon 24341, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0004-9035-5477","authenticated-orcid":false,"given":"Jeong-Keum","family":"Park","sequence":"additional","affiliation":[{"name":"Adisseo Asia Pacific Pte Ltd., Raffles Quay, Singapore 048581, Singapore"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6406-0262","authenticated-orcid":false,"given":"Gi-Hwal","family":"Son","sequence":"additional","affiliation":[{"name":"Nonghyup Livestock Research Center, Anseong 17558, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1889-3620","authenticated-orcid":false,"given":"Chang-Sik","family":"Choi","sequence":"additional","affiliation":[{"name":"Livestock Research Institute, Hoengseong 25266, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7067-6282","authenticated-orcid":false,"given":"Chang-Woo","family":"Lee","sequence":"additional","affiliation":[{"name":"Livestock Research Institute, Hoengseong 25266, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ju-Gyo","family":"Jeong","sequence":"additional","affiliation":[{"name":"Livestock Research Institute, Hoengseong 25266, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0004-0548-8858","authenticated-orcid":false,"given":"Jun","family":"Cui","sequence":"additional","affiliation":[{"name":"Department of Animal Science, Kangwon National University, Chuncheon 24341, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0007-2958-2496","authenticated-orcid":false,"given":"Yun-He","family":"Zheng","sequence":"additional","affiliation":[{"name":"Department of Animal Science, Kangwon National University, Chuncheon 24341, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0006-3499-9811","authenticated-orcid":false,"given":"Ji-Woo","family":"Choi","sequence":"additional","affiliation":[{"name":"Department of Animal Science, Kangwon National University, Chuncheon 24341, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Young-Hwan","family":"We","sequence":"additional","affiliation":[{"name":"Department of Animal Science, Kangwon National University, Chuncheon 24341, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0007-3301-4563","authenticated-orcid":false,"given":"Jong-Kook","family":"Bahn","sequence":"additional","affiliation":[{"name":"Department of Animal Science, Kangwon National University, Chuncheon 24341, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0006-2334-4828","authenticated-orcid":false,"given":"Hyo-Won","family":"Seo","sequence":"additional","affiliation":[{"name":"Department of Animal Science, Kangwon National University, Chuncheon 24341, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1148-2562","authenticated-orcid":false,"given":"Jong-Suh","family":"Shin","sequence":"additional","affiliation":[{"name":"Department of Animal Science, Kangwon National University, Chuncheon 24341, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5469-2012","authenticated-orcid":false,"given":"Byung Ki","family":"Park","sequence":"additional","affiliation":[{"name":"Department of Animal Science, Kangwon National University, Chuncheon 24341, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6485-1718","authenticated-orcid":false,"given":"Min Ji","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Animal Science, Kangwon National University, Chuncheon 24341, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,7,21]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"2582","DOI":"10.2527\/jas.2005-640","article-title":"Effects of pre-and postpartum nutrition on reproduction in spring calving cows and calf feedlot performance","volume":"84","author":"Stalker","year":"2006","journal-title":"J. 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