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<article article-type="research-article" dtd-version="1.3" 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" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">ivm</journal-id><journal-title-group><journal-title xml:lang="ru">Международный вестник ветеринарии</journal-title><trans-title-group xml:lang="en"><trans-title>International Journal of Veterinary Medicine</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2072-2419</issn><publisher><publisher-name>SpbGUVM Publishing House</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.52419/issn2072-2419.2025.2.176</article-id><article-id custom-type="elpub" pub-id-type="custom">ivm-1706</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ЗООГИГИЕНА, САНИТАРИЯ, КОРМЛЕНИЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ZOOHYGIENE, SANITATION, FEEDING</subject></subj-group></article-categories><title-group><article-title>Экспрессия генов антиоксидантной защиты и иммунитета в тканях цыплят-бройлеров под влиянием комплекса адаптогенов</article-title><trans-title-group xml:lang="en"><trans-title>Expression of antioxidant protection and immunity genes in broiler chicken tissues under the influence of a complex of adaptogens</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0008-4669-2395</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Вьючная</surname><given-names>П. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Vyuchnaya</surname><given-names>P. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>мл. науч. сотр. лаборатории фундаментальных основ питания с/х животных и рыб</p></bio><bio xml:lang="en"><p>Junior Researcher, Laboratory of Fundamental Principles of Nutrition of Farm Animals and Fish </p></bio><email xlink:type="simple">vyuchnaya@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7354-0337</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лахонин</surname><given-names>П. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Lakhonin</surname><given-names>P. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>мл. науч. сотр. лаборатории фундаментальных основ питания с/х животных и рыб</p></bio><bio xml:lang="en"><p>Junior Researcher, Laboratory of Fundamental Principles of Nutrition of Farm Animalsand Fish </p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5497-2409</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бардуков</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Bardukov</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>науч. сотр. лаборатории генетических технологий в агро- и аквахозяйстве</p></bio><bio xml:lang="en"><p>Researcher, Laboratory of Genetic Technologies in Agro- and Aquatic Farming </p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0520-7022</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Боголюбова</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Bogolubova</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д-р. биол. наук, вед. науч. сотр., зав. отделом физиологии и биохимии  сельскохозяйственных животных</p></bio><bio xml:lang="en"><p>Doctor of Biological Sci., Leading Researcher, Head of the Department of Physiology and Biochemistry of Farm Animals </p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБНУ «Федеральный исследовательский центр животноводства - ВИЖ имени академика Л.К. Эрнста»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal Research Center for Animal Husbandry named after L.K. Ernst</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>01</day><month>08</month><year>2025</year></pub-date><volume>0</volume><issue>2</issue><fpage>176</fpage><lpage>189</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Вьючная П.С., Лахонин П.Д., Бардуков Н.В., Боголюбова Н.В., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Вьючная П.С., Лахонин П.Д., Бардуков Н.В., Боголюбова Н.В.</copyright-holder><copyright-holder xml:lang="en">Vyuchnaya P.S., Lakhonin P.D., Bardukov N.V., Bogolubova N.V.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://vetjournal.spbguvm.ru/jour/article/view/1706">https://vetjournal.spbguvm.ru/jour/article/view/1706</self-uri><abstract><p>Современные технологии в птицеводстве часто сопряжены со стрессовыми факторами, вызывающими дисбаланс между образованием свободных радикалов и антиоксидантной защитой, что может привести к развитию окислительного стресса. В связи с этим, поддержание оптимальной работы иммунной системы и усиление антиоксидантной защиты, особенно с использованием экзогенных антиоксидантов, приобретает ключевое значение для здоровья и адаптации птиц. Целью работы являлась оценка влияния комплексной добавки ДКВЕС (дигидрокверцетин, витамины E и С) на экспрессию генов антиоксидантной защиты и иммунитета в тканях печени и кишечника цыплят-бройлеров при моделированном стрессе. Эксперимент проведен на цыплятах-бройлерах кросса «Смена-9» (n=40, N=160). Были сформированы контрольная и три опытные группы, подвергнутые стрессу (увеличение плотности посадки на 10%). Дополнительно к основному рациону третьей (с 21 дня эксперимента) и четвертой (с 1 дня эксперимента) группам добавляли комплекс адаптогенов ДКВЕС: дигидрокверцетин (32 мг/кг корма), витамин E (10 мг/кг корма) и витамин С (35 мг/кг корма). Методом ПЦР-РВ определяли экспрессию генов Nrf2, GSH-Gpx, CAT, SOD, HO-1, AvBD9, IL6 и IL8 в печени и слепом кишечнике. Результаты показали, что моделируемый стресс вызывал снижение активности Nrf2 и GSH-Gpx в тканях кишечника и печени, а также снижение экспрессии AvBD9, что свидетельствует о подавлении защитных механизмов организма. Профилактическое применение ДКВЕС смягчало негативное воздействие стресса, увеличивая активность генов Nrf2, GSH-Gpx и HO-1, а также стимулируя экспрессию AvBD9 и IL-6. Кроме того, выявлена положительная корреляция между экспрессией гена AvBD-9 в кишечнике бройлеров и среднесуточным приростом. Полученные данные свидетельствуют о перспективности использования комплекса ДКВЕС для повышения устойчивости цыплят-бройлеров к стрессу и улучшения их продуктивных качеств.</p></abstract><trans-abstract xml:lang="en"><p>Modern poultry farming technologies are often associated with stress factors that disrupt the balance between free radical production and antioxidant defense, potentially leading to oxidative stress. Consequently, maintaining optimal immune system function and enhancing antioxidant defense, particularly through exogenous antioxidants, is critical for poultry health and adaptation. This study aimed to evaluate the impact of the DHQEС complex (dihydroquercetin, vitamins E and C) on the expression of antioxidant and immune-related genes in the liver and intestinal tissues of broiler chickens under simulated stress. The experiment was carried out on broiler chickens of the «Smena-9» cross (n=40, N=160). A control group and three experimental groups were formed, which were subjected to stress (increase in stocking density by 10%). In addition to the basal diet, the third (from the 21st day of the experiment) and fourth (from the 1st day of the experiment) groups were supplemented with DHQEC: dihydroquercetin (32 mg/kg feed), vitamin E (10 mg/kg feed), and vitamin C (35 mg/kg feed). Realtime PCR was used to analyze the expression of Nrf2, GSH-Gpx, CAT, SOD, HO-1, AvBD9, IL-6, and IL-8 genes in liver and cecum. Results demonstrated that simulated stress reduced the expression of Nrf2 and GSH-Gpx in intestinal and liver tissues, along with decreased AvBD9 expression, indicating suppressed defense mechanisms. Prophylactic DHQEС administration mitigated these effects by upregulating Nrf2, GSH-Gpx, and HO-1 expression, while stimulating AvBD9 and IL-6. A positive correlation was observed between intestinal AvBD9 expression and average daily weight gain. These findings highlight the potential of the DHQEС complex to enhance stress resilience and productivity in broilers.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>«смена-9»</kwd><kwd>стресс</kwd><kwd>экспрессия генов</kwd><kwd>дигидрокверцетин</kwd><kwd>аскорбиновая кислота</kwd><kwd>токоферол</kwd></kwd-group><kwd-group xml:lang="en"><kwd>«smena-9»</kwd><kwd>stress</kwd><kwd>gene expression</kwd><kwd>dihydroquercetin</kwd><kwd>ascorbic acid</kwd><kwd>tocopherol</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследования проведены при финансовой поддержке Российского Научного Фонда по проекту 22-16-00024 П.</funding-statement><funding-statement xml:lang="en">The research was supported by the Russian Science Foundation under project 22-16-00024 P.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Antioxidants: Classification, Natural Sources, Activity/Capacity Measurements, and Usefulness for the Synthesis of Nanoparticles / J. 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