{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T04:58:19Z","timestamp":1760245099002,"version":"build-2065373602"},"reference-count":81,"publisher":"MDPI AG","issue":"20","license":[{"start":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T00:00:00Z","timestamp":1760054400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100002322","name":"Coordena\u00e7\u00e3o de Aperfei\u00e7oamento de Pessoal de N\u00edvel Superior","doi-asserted-by":"publisher","award":["001"],"award-info":[{"award-number":["001"]}],"id":[{"id":"10.13039\/501100002322","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003593","name":"CNPq","doi-asserted-by":"crossref","award":["PQ- 305112\/2023\u20136","PQ 308804\/2025-2","PQ 305602\/2022-5"],"award-info":[{"award-number":["PQ- 305112\/2023\u20136","PQ 308804\/2025-2","PQ 305602\/2022-5"]}],"id":[{"id":"10.13039\/501100003593","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Animals"],"abstract":"<jats:p>This study evaluated the effects of dietary olive leaf extract (OLE) on Nile tilapia (Oreochromis niloticus) juveniles, focusing on growth parameters, centesimal composition, biochemical responses, and lipid peroxidation. OLE was extracted with 60% ethanol (1:20 w\/v). Five diets, containing 34% crude protein and 8% lipids, were tested: a control (0 g\/kg) and four with increasing OLE levels (0.25, 0.5, 1, and 2 g\/kg). The 46-day trial included 225 fish (0.56 \u00b1 0.11 g) distributed in 15 tanks. Growth performance was not affected, except for a higher condition factor in OLE0.25. This dose also resulted in lower moisture and higher lipid content, while all OLE treatments increased crude protein in fish. Muscle glycogen decreased in all OLE-fed groups, and liver glycogen was reduced in OLE0.25. Plasma triglycerides decreased in OLE0.5 and OLE0.25, while total plasma protein was lower in OLE2.0. Liver triglycerides were lower in OLE0.25 and higher in OLE0.5, whereas glucose showed a glycemic peak in OLE2.0. Hepatic lipid peroxidation was reduced in OLE2.0. Overall, dietary OLE did not compromise the growth performance of Nile tilapia, and 0.25 g\/kg promoted beneficial effects on centesimal composition, biochemical parameters, and lipid peroxidation, highlighting its potential as a functional ingredient in aquafeeds.<\/jats:p>","DOI":"10.3390\/ani15202935","type":"journal-article","created":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T09:45:01Z","timestamp":1760089501000},"page":"2935","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Effects of Olive Leaf (Olea europaea) Phenolic Extract on Zootechnical Parameters, Centesimal Composition, and Biochemical Parameters of Nile Tilapia (Oreochromis niloticus) Juveniles"],"prefix":"10.3390","volume":"15","author":[{"given":"Thaise Dalferth","family":"Zancan","sequence":"first","affiliation":[{"name":"Institute of Oceanography, Federal University of Rio Grande, Av. It\u00e1lia, km 8, Rio Grande 96203-900, Brazil"},{"name":"Marine Aquaculture Station, Federal University of Rio Grande, Rua do Hotel, 2, Rio Grande 96210-030, Brazil"},{"name":"Laboratory of Nutrition of Aquatic Organisms, Rio Grande 96210-030, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9463-3049","authenticated-orcid":false,"given":"Jos\u00e9 Mar\u00eda","family":"Monserrat","sequence":"additional","affiliation":[{"name":"Marine Aquaculture Station, Federal University of Rio Grande, Rua do Hotel, 2, Rio Grande 96210-030, Brazil"},{"name":"Institute of Biological Sciences, Federal University of Rio Grande, Av. It\u00e1lia, km 8, Rio Grande 96203-900, Brazil"},{"name":"Laboratory of Functional Biochemistry of Aquatic Organisms, Rio Grande 96210-030, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1374-8053","authenticated-orcid":false,"given":"Vil\u00e1sia Guimar\u00e3es","family":"Martins","sequence":"additional","affiliation":[{"name":"School of Chemistry and Food Engineering, Federal University of Rio Grande, Av. It\u00e1lia, km 8, Rio Grande 96203-900, Brazil"},{"name":"Laboratory of Food Technology, Rio Grande 96203-900, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4818-9829","authenticated-orcid":false,"given":"Marcelo Borges","family":"Tesser","sequence":"additional","affiliation":[{"name":"Institute of Oceanography, Federal University of Rio Grande, Av. It\u00e1lia, km 8, Rio Grande 96203-900, Brazil"},{"name":"Marine Aquaculture Station, Federal University of Rio Grande, Rua do Hotel, 2, Rio Grande 96210-030, Brazil"},{"name":"Laboratory of Nutrition of Aquatic Organisms, Rio Grande 96210-030, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2025,10,10]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"206","DOI":"10.1111\/jwas.12963","article-title":"The contribution of aquaculture systems to global aquaculture production","volume":"54","author":"Verdegem","year":"2023","journal-title":"J. World Aquac. Soc."},{"key":"ref_2","unstructured":"FAO (2024). The State of World Fisheries and Aquaculture (SOFIA) 2024. Blue Transformation in Action, FAO."},{"key":"ref_3","unstructured":"PeixeBR (2025, March 11). Anu\u00e1rio Peixe BR da Piscicultura. 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