{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T04:31:32Z","timestamp":1787027492763,"version":"build-2736575974"},"reference-count":58,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2022,12,31]],"date-time":"2022-12-31T00:00:00Z","timestamp":1672444800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"BIOFOOD\u2014innovative, functional products of animal origin","award":["POIG.01.01.02-014-090\/09"],"award-info":[{"award-number":["POIG.01.01.02-014-090\/09"]}]},{"name":"European Union from the European Regional Development Fund within the Innovative Economy Operational Programme 2007\u20132013","award":["POIG.01.01.02-014-090\/09"],"award-info":[{"award-number":["POIG.01.01.02-014-090\/09"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Animals"],"abstract":"<jats:p>The aim of this study was to examine the influence of the level (1, 3, and 5 mg I\/kg) and source of iodine (KI, Ca(IO3)2, and KIO3) on thyroid hormone and immunoglobulin concentrations in the blood serum of laying hens alongside a histological picture of the thyroid. In the first, birds were fed grain\u2013soybean meal mixtures, and in the second, two kinds of diets based on corn\u2013soybean or corn\u2013soybean\u2013rapeseed meal were applied. In the experiments, we determined the levels of the blood serum thyroid hormones fT3 and fT4, as well as the morphological structure of the thyroid gland. In the second experiment, the concentration of immunoglobulins in blood serum was assayed. In both experiments, no influence of iodine source on thyroid hormone concentration was observed. However, increasing the iodine level in the full mixture and adding rapeseed meal in both experiments caused an increase in fT3 concentration. Increasing I-addition in both experiments led to a decrease in thyroid gland follicle diameter. Rapeseed meal inclusion (at a level of 10%) to the complete hen mixture led to an increase in thyroid gland follicle diameter. Applying KIO3 as an iodine source in both experiments caused a decrease in the thyroid gland height of follicle epithelial cells. Immunoglobulin concentrations in the serum were not affected by experimental factors. The results suggest that the methodologies of studies on the bioavailability of minerals and the corresponding analytical methods require unification. The lack of such standardization makes it impossible to engage in a satisfactory discussion of the results and exchange experiences.<\/jats:p>","DOI":"10.3390\/ani13010158","type":"journal-article","created":{"date-parts":[[2023,1,2]],"date-time":"2023-01-02T02:23:06Z","timestamp":1672626186000},"page":"158","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["The Thyroid Hormone and Immunoglobulin Concentrations in Blood Serum and Thyroid Gland Morphology in Young Hens Fed with Different Diets, Sources, and Levels of Iodine Supply"],"prefix":"10.3390","volume":"13","author":[{"given":"Maja","family":"S\u0142upczy\u0144ska","sequence":"first","affiliation":[{"name":"Department of Animal Nutrition and Feed Science, Wroc\u0142aw University of Environmental and Life Sciences, 50-375 Wroc\u0142aw, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dorota","family":"Jamroz","sequence":"additional","affiliation":[{"name":"Department of Animal Nutrition and Feed Science, Wroc\u0142aw University of Environmental and Life Sciences, 50-375 Wroc\u0142aw, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Janusz","family":"Orda","sequence":"additional","affiliation":[{"name":"Department of Animal Nutrition and Feed Science, Wroc\u0142aw University of Environmental and Life Sciences, 50-375 Wroc\u0142aw, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andrzej","family":"Wiliczkiewicz","sequence":"additional","affiliation":[{"name":"Department of Animal Nutrition and Feed Science, Wroc\u0142aw University of Environmental and Life Sciences, 50-375 Wroc\u0142aw, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0682-4743","authenticated-orcid":false,"given":"Piotr","family":"Kuropka","sequence":"additional","affiliation":[{"name":"Department of Biostructure and Animal Physiology, Wroc\u0142aw University of Environmental and Life Sciences, 50-375 Wroc\u0142aw, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Barbara","family":"Kr\u00f3l","sequence":"additional","affiliation":[{"name":"Department of Animal Nutrition and Feed Science, Wroc\u0142aw University of Environmental and Life Sciences, 50-375 Wroc\u0142aw, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2022,12,31]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Sturkie, P.D. 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