{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,13]],"date-time":"2026-05-13T01:44:01Z","timestamp":1778636641759,"version":"3.51.4"},"reference-count":44,"publisher":"MDPI AG","issue":"15","license":[{"start":{"date-parts":[[2025,7,25]],"date-time":"2025-07-25T00:00:00Z","timestamp":1753401600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Federal University of Par\u00e1","award":["PROPESP\/UFPA-Announcement-02\/2023"],"award-info":[{"award-number":["PROPESP\/UFPA-Announcement-02\/2023"]}]},{"name":"Coordena\u00e7\u00e3o de Aperfei\u00e7oamento de Pessoal de N\u00edvel Superior (CAPES) Brasil","award":["PROPESP\/UFPA-Announcement-02\/2023"],"award-info":[{"award-number":["PROPESP\/UFPA-Announcement-02\/2023"]}]},{"name":"Dean of Research and Graduate Studies","award":["PROPESP\/UFPA-Announcement-02\/2023"],"award-info":[{"award-number":["PROPESP\/UFPA-Announcement-02\/2023"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Animals"],"abstract":"<jats:p>The scientific literature currently lacks studies that evaluate the nutritional composition of the tissues of cattle raised in different systems, so that the nutritional effects can be known and used to enhance consumption and use in the diet. The aim was therefore to assess whether the mineral content of muscle tissue (longissimus lumborum) in cattle finished during the rainy season in the Eastern Amazon is influenced by different farming systems. The treatments consisted of four systems (three pasture production systems and one feedlot system). 1. native wetland pasture in Santa Cruz do Arari (Mesoregion of Maraj\u00f3); 2. native wetland pasture in Monte Alegre (Mesoregion of Baixo Amazonas); 3. cultivated dryland pasture in S\u00e3o Miguel do Guam\u00e1 (Mesoregion of Nordeste Paraense); and 4. Confinement in Santa Izabel do Par\u00e1 (Metropolitan Region of Bel\u00e9m). The analyses were carried out on samples of the longissimus lumborum muscle tissue of 48 male, castrated, crossbred Nelore cattle, twelve per breeding system, from commercial farms, destined for meat production, finished during the rainiest period of the year (between January and June). In systems 1 and 2, the animals were slaughtered in licensed slaughterhouses; the animals in systems 3 and 4 were slaughtered in commercial slaughterhouses. Food sampling and chemical analysis, soil sample collection and analysis, longissimus lumborum muscle tissue collection, sample preparation and digestion, and inductively coupled plasma optical emission spectrometry were evaluated. The experimental design was completely randomized in a linear model with four rearing systems and one period (rainy). The data was compared using the Statistical Analysis Systems (SAS) program. All analyses were carried out considering a significance level of 0.05. Samples of the diets offered (pasture and concentrate) were also collected. The Amazon systems influenced the macro- and micromineral content in the muscles of cattle (p &lt; 0.05). The interaction between pasture systems vs. confinement showed differences in the minerals calcium (Ca), magnesium (Mg), phosphorus (P), copper (Cu), zinc (Zn), iron (Fe), and manganese (Mn) (p &lt; 0.05). However, there was no difference in the values of sodium (Na), potassium (K), and sulfur (S) between the rearing systems (p &gt; 0.05). By contrast, the cultivated pasture system vs. extensive pasture showed differences in all the elements evaluated (p &lt; 0.05). The rearing systems of the Eastern Amazon influenced the mineral content of beef, which continues to be an excellent source of macro- and microminerals and can compose the human diet.<\/jats:p>","DOI":"10.3390\/ani15152186","type":"journal-article","created":{"date-parts":[[2025,7,25]],"date-time":"2025-07-25T08:13:31Z","timestamp":1753431211000},"page":"2186","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Is the Mineral Content of Muscle Tissue (Longissimus Lumborum) in Cattle Finished During the Rainy Season in the Eastern Amazon Influenced by Different Farming Systems?"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6553-882X","authenticated-orcid":false,"given":"Ana Paula Damasceno","family":"Ferreira","sequence":"first","affiliation":[{"name":"Postgraduate Program in Animal Science (PPGCAN), Institute of Veterinary Medicine, Federal University of Para (UFPA), Castanhal 68746-360, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6400-6925","authenticated-orcid":false,"given":"Jamile Andr\u00e9a Rodrigues da","family":"Silva","sequence":"additional","affiliation":[{"name":"Institute of Animal Health and Production, Federal Rural University of the Amaz\u00f4nia (UFRA), Belem 66077-830, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4843-1064","authenticated-orcid":false,"given":"Miguel Pedro","family":"Mourato","sequence":"additional","affiliation":[{"name":"Linking Landscape, Environment, Agriculture and Food (LEAF), Higher Institute of Agronomy, University of Lisbon, 1349-017 Lisboa, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1032-5987","authenticated-orcid":false,"given":"Jos\u00e9 Ant\u00f3nio Mestre","family":"Prates","sequence":"additional","affiliation":[{"name":"Centre for Interdisciplinary Research in Animal Health (CIISA), Faculty of Veterinary Medicine, University of Lisbon, 1300-477 Lisboa, Portugal"},{"name":"Laborat\u00f3rio Associado para Ci\u00eancia Animal e Veterin\u00e1ria (AL4AnimalS), Faculdade de Medicina Veterin\u00e1ria, Universidade de Lisboa, 1300-477 Lisboa, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7874-4937","authenticated-orcid":false,"given":"Thomaz Cyro Guimar\u00e3es de Carvalho","family":"Rodrigues","sequence":"additional","affiliation":[{"name":"Institute of Animal Health and Production, Federal Rural University of the Amaz\u00f4nia (UFRA), Belem 66077-830, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0020-2951","authenticated-orcid":false,"given":"Andr\u00e9 Guimar\u00e3es Maciel e","family":"Silva","sequence":"additional","affiliation":[{"name":"Postgraduate Program in Animal Science (PPGCAN), Institute of Veterinary Medicine, Federal University of Para (UFPA), Castanhal 68746-360, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6532-8424","authenticated-orcid":false,"given":"Andrea Viana da","family":"Cruz","sequence":"additional","affiliation":[{"name":"Postgraduate Program in Animal Science (PPGCAN), Institute of Veterinary Medicine, Federal University of Para (UFPA), Castanhal 68746-360, Brazil"}]},{"given":"Adriny dos Santos Miranda","family":"Lobato","sequence":"additional","affiliation":[{"name":"Postgraduate Program in Animal Science (PPGCAN), Institute of Veterinary Medicine, Federal University of Para (UFPA), Castanhal 68746-360, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9287-0465","authenticated-orcid":false,"given":"Welligton Concei\u00e7\u00e3o da","family":"Silva","sequence":"additional","affiliation":[{"name":"Postgraduate Program in Animal Science (PPGCAN), Institute of Veterinary Medicine, Federal University of Para (UFPA), Castanhal 68746-360, Brazil"}]},{"given":"Elton Alex Corr\u00eaa da","family":"Silva","sequence":"additional","affiliation":[{"name":"Postgraduate Program in Animal Science (PPGCAN), Institute of Veterinary Medicine, Federal University of Para (UFPA), Castanhal 68746-360, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9087-7866","authenticated-orcid":false,"given":"Ant\u00f4nio Marcos Quadros","family":"Cunha","sequence":"additional","affiliation":[{"name":"Nucleus of Agricultural Sciences and Rural Development, Federal University of Par\u00e1, Camet\u00e1 68400-000, Brazil"}]},{"given":"Vanessa Vieira","family":"Louren\u00e7o-Costa","sequence":"additional","affiliation":[{"name":"Institute of Health Sciences, Federal University of Par\u00e1, Belem 66075-110, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2964-8471","authenticated-orcid":false,"given":"\u00c9der Bruno Rebelo da","family":"Silva","sequence":"additional","affiliation":[{"name":"Postgraduate Program in Animal Science (PPGCAN), Institute of Veterinary Medicine, Federal University of Para (UFPA), Castanhal 68746-360, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0515-6640","authenticated-orcid":false,"given":"Tatiane Silva","family":"Belo","sequence":"additional","affiliation":[{"name":"Postgraduate Program in Animal Science (PPGCAN), Institute of Veterinary Medicine, Federal University of Para (UFPA), Castanhal 68746-360, Brazil"}]},{"given":"Jos\u00e9 de Brito","family":"Louren\u00e7o-J\u00fanior","sequence":"additional","affiliation":[{"name":"Postgraduate Program in Animal Science (PPGCAN), Institute of Veterinary Medicine, Federal University of Para (UFPA), Castanhal 68746-360, Brazil"}]}],"member":"1968","published-online":{"date-parts":[[2025,7,25]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"47","DOI":"10.1016\/0309-1740(89)90006-5","article-title":"Mineral Composition of Lamb Carcasses from the United States and New Zealand","volume":"24","author":"Lin","year":"1988","journal-title":"Meat Sci."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"49","DOI":"10.1016\/j.jfca.2016.12.018","article-title":"Heme iron. non-heme iron, and mineral content of blood 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