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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">RUDN Journal of Agronomy and Animal Industries</journal-id><journal-title-group><journal-title xml:lang="en">RUDN Journal of Agronomy and Animal Industries</journal-title><trans-title-group xml:lang="ru"><trans-title>Вестник Российского университета дружбы народов. Серия: Агрономия и животноводство</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2312-797X</issn><issn publication-format="electronic">2312-7988</issn><publisher><publisher-name xml:lang="en">Peoples’ Friendship University of Russia named after Patrice Lumumba</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">20131</article-id><article-id pub-id-type="doi">10.22363/2312-797X-2024-19-4-651-658</article-id><article-id pub-id-type="edn">BFJMYH</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Animal breeding</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Животноводство</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Panax ginseng essential oil as a dietary additive: growth and digestive enzyme benefits for rainbow trout</article-title><trans-title-group xml:lang="ru"><trans-title>Эфирное масло женьшеня обыкновенного как пищевая добавка: польза для роста и пищеварительных ферментов радужной форели</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7334-8409</contrib-id><contrib-id contrib-id-type="spin">2206-3081</contrib-id><name-alternatives><name xml:lang="en"><surname>Yousefi</surname><given-names>Morteza</given-names></name><name xml:lang="ru"><surname>Юсефи</surname><given-names>Мортеза</given-names></name></name-alternatives><bio xml:lang="en"><p>Candidate of Biological Sciences, Associate Professor, Department of Veterinary Medicine Agrarian and Technological Institute</p></bio><bio xml:lang="ru"><p>кандидат биологических наук, доцент департамента ветеринарной медицины Аграрно-технологического института</p></bio><email>yousefi_m@pfur.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0139-8087</contrib-id><contrib-id contrib-id-type="spin">3907-8576</contrib-id><name-alternatives><name xml:lang="en"><surname>Brigida</surname><given-names>Artyom V.</given-names></name><name xml:lang="ru"><surname>Бригида</surname><given-names>Артем Владимирович</given-names></name></name-alternatives><bio xml:lang="en"><p>Candidate of Veterinary Sciences, Director</p></bio><bio xml:lang="ru"><p>кандидат ветеринарных наук, директор</p></bio><email>fish-vniir@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9824-5430</contrib-id><contrib-id contrib-id-type="scopus">35386383300</contrib-id><contrib-id contrib-id-type="researcherid">B-7386-2017</contrib-id><name-alternatives><name xml:lang="en"><surname>Hoseini</surname><given-names>Seyyed M.</given-names></name><name xml:lang="ru"><surname>Сайед</surname><given-names>Мортеза Хосейни</given-names></name></name-alternatives><bio xml:lang="en"><p>Ph.D., Assistant professor, Head of Stock Rehabilitation Division of Inland Waters Aquatics Resources Research Center (IWARRC)</p></bio><bio xml:lang="ru"><p>кандидат наук, ассистент, руководитель отдела восстановления запасов Центра исследований водных ресурсов внутренних вод (IWARRC)</p></bio><email>seyyedmorteza.hoseini@gmail.com</email><xref ref-type="aff" rid="aff3"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">RUDN University</institution></aff><aff><institution xml:lang="ru">Российский университет дружбы народов</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">All-Russian Research Institute of Integrated Fish Farming - a branch of L.K. Ernst Federal Research Center for Animal Husbandry</institution></aff><aff><institution xml:lang="ru">Всероссийский научно-исследовательский институт интегрированного рыбоводства - филиал ФГБНУ «Федеральный исследовательский центр животноводства - ВИЖ имени академика Л.К. Эрнста»</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Iranian Fisheries Sciences Research Institute</institution></aff><aff><institution xml:lang="ru">Иранский научно-исследовательский институт рыбного хозяйства</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-12-30" publication-format="electronic"><day>30</day><month>12</month><year>2024</year></pub-date><volume>19</volume><issue>4</issue><issue-title xml:lang="en">VOL 19, NO4 (2024)</issue-title><issue-title xml:lang="ru">ТОМ 19, №4 (2024)</issue-title><fpage>651</fpage><lpage>658</lpage><history><date date-type="received" iso-8601-date="2025-03-29"><day>29</day><month>03</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Yousefi M., Brigida A.V., Hoseini S.M.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Юсефи М., Бригида А.В., Сайед М.Х.</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Yousefi M., Brigida A.V., Hoseini S.M.</copyright-holder><copyright-holder xml:lang="ru">Юсефи М., Бригида А.В., Сайед М.Х.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by-nc/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://agrojournal.rudn.ru/agronomy/article/view/20131">https://agrojournal.rudn.ru/agronomy/article/view/20131</self-uri><abstract xml:lang="en"><p>This study aimed to evaluate the effects of dietary ginseng, <italic>Panax ginseng</italic>, essential oil (GE) on the growth performance and digestive enzyme activities in rainbow trout, <italic>Oncorhynchus mykiss</italic>. Fish were fed diets containing 0 ml/kg (control; CTL), 0.5 ml/kg (GE0.5), 1.0 ml/kg (GE1.0), 1.5 ml/kg (GE1.5), 2.0 ml/kg (GE2.0), 2.5 ml/kg (GE2.5), 3.0 ml/kg (GE3.0), and 3.5 ml/kg (GE3.5) GE for 8 weeks. Results indicated that the highest growth performance and feed efficiency were achieved with the GE2.0 and GE2.5 treatments. The GE2.5 and GE3.0 treatments exhibited the highest activities of gut trypsin, chymotrypsin, and lipase. But there were no significant differences in the gut amylase activity among the treatments. In conclusion, dietary GE at 2.5 ml/kg is recommended for trout feed supplementation to reach the highest production.</p></abstract><trans-abstract xml:lang="ru"><p style="text-align: justify;">Цель исследования — оценка влияния кормовой добавки эфирного масла женьшеня <italic>Panax ginseng</italic> (GE) на показатели роста и активность пищеварительных ферментов радужной форели <italic>Oncorhynchus mykiss</italic>. Рыбы получали рационы, содержащие 0 мл/кг (контроль; CTL), 0,5 мл/кг (GE0,5), 1,0 мл/кг (GE1,0), 1,5 мл/кг (GE1,5), 2,0 мл/кг (GE2,0), 2,5 мл/кг (GE2,5), 3,0 мл/кг (GE3,0) и 3,5 мл/кг (GE3,5) эфирного масла женьшеня, в течение 8 недель. Результаты показали, что самые высокие показатели роста и эффективности корма были достигнуты в группах GE2,0 и GE2,5. Группы GE2,5 и GE3,0 показали самую высокую активность трипсина кишечника, химотрипсина и липазы. Но не было никаких существенных различий в активности кишечной амилазы между группами. В заключение, для достижения наивысшей производительности в качестве кормовой добавки для форели рекомендуется добавка, содержащая эфирное масло женьшеня в дозировке 2,5 мл/кг.</p></trans-abstract><kwd-group xml:lang="en"><kwd>feed additive</kwd><kwd>aquaculture</kwd><kwd>gut</kwd><kwd>digestion</kwd><kwd>phytobiotic</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>кормовая добавка</kwd><kwd>аквакультура</kwd><kwd>кишечник</kwd><kwd>пищеварение</kwd><kwd>фитобиотик</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="ru">Исследование выполнено за счет гранта Российского научного фонда № 24-26-00212, https://rscf.ru/project/24-26-00212/</institution></institution-wrap><institution-wrap><institution xml:lang="en">The study was supported by a grant from the Russian Science Foundation (RSF) No. 24-26-00212, https://rscf.ru/en/project/24-26-00212/</institution></institution-wrap></funding-source></award-group></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Vijayaram S, Sun YZ, Zuorro A, Ghafarifarsani H, Van Doan H, Hoseinifar SH. 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