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In recent decades, broiler responses to dietary Se supplemental levels and sources have received considerable attention. On environmental grounds, organic trace mineral utilization in practical broiler feeds has been defended due to its higher bioavailability. In such feeds, trace minerals are provided simultaneously in the same supplement as inorganic salts or organic chelates, a fact commonly ignored in assays conducted to validate organic trace mineral sources. The current assay aimed to investigate growth and biochemical responses, as well as Se retention of growing chicks fed diets supplemented with organic and inorganic Se levels and where the trace minerals (zinc, copper, manganese, and iron) were provided as organic chelates or inorganic salts according to Se source assessed. In so doing, a 2\u2009\u00d7\u20095 factorial arrangement was used to investigate the effects of sodium selenite (SS) and selenium-yeast (SY) supplemented in feeds to provide the levels of 0, 0.08, 0.16, 0.24, and 0.32\u2009mg Se\/kg.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Chicks fed selenium-yeast diets had body weight (BW), and average daily gain (ADG) maximized at 0.133 and 0.130\u2009mg Se\/kg, respectively. Both Se sources linearly increased (<jats:italic>P<\/jats:italic>\u2009&lt;\u20090.05) the glutathione peroxidase (GSH-Px) activity in chick blood but higher values were observed in sodium selenite fed chicks (<jats:italic>P<\/jats:italic>\u2009&lt;\u20090.05). Both Se sources influenced thyroid hormone serum concentrations (<jats:italic>P<\/jats:italic>\u2009&lt;\u20090.05). Chicks fed SY exhibited greater retention of Se in the feathers (<jats:italic>P<\/jats:italic>\u2009&lt;\u20090.05). Relative bioavailability of selenium yeast compared with SS for the Se content in carcass, feathers, total and Se retention were, 126, 116, 125 and 125%, respectively. SY supplementation resulted in lower liver Se concentration as Se supplementation increased (<jats:italic>P<\/jats:italic>\u2009&lt;\u20090.05).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Based on performance traits, the supplemental level of organic Se as SY in organic trace minerals supplement to support the maximal growth of broiler chicks is 0.133\u2009mg Se\/kg.<\/jats:p><\/jats:sec>","DOI":"10.1186\/s12917-021-02855-4","type":"journal-article","created":{"date-parts":[[2021,4,9]],"date-time":"2021-04-09T07:03:31Z","timestamp":1617951811000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":22,"title":["Selenium source and level on performance, selenium retention and biochemical responses of young broiler chicks"],"prefix":"10.1186","volume":"17","author":[{"given":"Pedro Righetti","family":"Arnaut","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gabriel","family":"da Silva Viana","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lucimauro","family":"da Fonseca","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Warley Junior","family":"Alves","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jorge Cunha Lima","family":"Muniz","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"James Eugene","family":"Pettigrew","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fabyano Fonseca","family":"e Silva","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hor\u00e1cio Santiago","family":"Rostagno","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Melissa Izabel","family":"Hannas","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2021,4,9]]},"reference":[{"issue":"10","key":"2855_CR1","doi-asserted-by":"publisher","first-page":"4231","DOI":"10.3382\/ps\/pey406","volume":"98","author":"PF Surai","year":"2019","unstructured":"Surai PF, Kochish II. 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ISBN 0-471-71813-0."}],"container-title":["BMC Veterinary Research"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1186\/s12917-021-02855-4.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/article\/10.1186\/s12917-021-02855-4\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1186\/s12917-021-02855-4.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,11,1]],"date-time":"2023-11-01T17:53:47Z","timestamp":1698861227000},"score":1,"resource":{"primary":{"URL":"https:\/\/bmcvetres.biomedcentral.com\/articles\/10.1186\/s12917-021-02855-4"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,4,9]]},"references-count":49,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2021,12]]}},"alternative-id":["2855"],"URL":"https:\/\/doi.org\/10.1186\/s12917-021-02855-4","relation":{},"ISSN":["1746-6148"],"issn-type":[{"value":"1746-6148","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,4,9]]},"assertion":[{"value":"27 November 2020","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"22 March 2021","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"9 April 2021","order":3,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"All animal care and used procedures were approved by the Animal Care and Use Committee of the Universidade Federal de Vi\u00e7osa (CEUAP, UFV, Vi\u00e7osa, Brazil) under protocol n.<sup>0<\/sup> 111\/2014, prior to the beginning of the trials, including euthanasia by cervical dislocation, where all efforts were made to minimize suffering. Birds were not anesthetized prior to euthanasia. The birds used in the current research were obtained from a local commercial hatchery (Rivelle, Mateus Leme, Minas Gerais State, Brazil). The hatchery is a facility which unique purpose is to obtain profit from the sale of broiler chicks, which may be used either for research or commercial purposes.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval and consent to participate"}},{"value":"Not applicable.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent for publication"}},{"value":"JEP contracts with Alltech, the supplier of the selenium yeast used in this experiment, to supervise this research. The other authors declare that they have no competing interests.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}],"article-number":"151"}}