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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">19741</article-id><article-id pub-id-type="doi">10.22363/2312-797X-2022-17-1-112-123</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">Features of development of visceral organs in embryos of egg cross chickens ‘Lohmann Brown’ under red and green monochromatic LED lighting</article-title><trans-title-group xml:lang="ru"><trans-title>Особенности развития висцеральных органов у эмбрионов кур яичного кросса «Ломанн Браун» при красном и зеленом монохроматическом светодиодном освещении</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9353-767X</contrib-id><name-alternatives><name xml:lang="en"><surname>Chelnokova</surname><given-names>Marina I.</given-names></name><name xml:lang="ru"><surname>Челнокова</surname><given-names>Марина Игоревна</given-names></name></name-alternatives><bio xml:lang="en"><p>Candidate of Biological Sciences, Head of the Veterinary Department, Faculty of Animal Husbandry Technology and Agroecology</p></bio><bio xml:lang="ru"><p>кандидат биологических наук, заведующая кафедрой ветеринарии факультета технологии животноводства и агроэкологии</p></bio><email>marinachelnokova@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0502-5752</contrib-id><name-alternatives><name xml:lang="en"><surname>Chelnokov</surname><given-names>Andrey A.</given-names></name><name xml:lang="ru"><surname>Челноков</surname><given-names>Андрей Алексеевич</given-names></name></name-alternatives><bio xml:lang="en"><p>Doctor of Biological Sciences, Professor of the Department of Animal Husbandry and Processing Technology, Faculty of Animal Husbandry Technology and Agroecology</p></bio><bio xml:lang="ru"><p>доктор биологических наук, профессор кафедры зоотехнии и технологии переработки продукции животноводства факультета технологии животноводства и агроэкологии</p></bio><email>and-chelnokov@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Velikie Luki State Agricultural Academy</institution></aff><aff><institution xml:lang="ru">Великолукская государственная сельскохозяйственная академия</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2022-04-02" publication-format="electronic"><day>02</day><month>04</month><year>2022</year></pub-date><volume>17</volume><issue>1</issue><issue-title xml:lang="en">VOL 17, NO1 (2022)</issue-title><issue-title xml:lang="ru">ТОМ 17, №1 (2022)</issue-title><fpage>112</fpage><lpage>123</lpage><history><date date-type="received" iso-8601-date="2022-04-02"><day>02</day><month>04</month><year>2022</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2022, Chelnokova M.I., Chelnokov A.A.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2022, Челнокова М.И., Челноков А.А.</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="en">Chelnokova M.I., Chelnokov A.A.</copyright-holder><copyright-holder xml:lang="ru">Челнокова М.И., Челноков А.А.</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/">http://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://agrojournal.rudn.ru/agronomy/article/view/19741">https://agrojournal.rudn.ru/agronomy/article/view/19741</self-uri><abstract xml:lang="en"><p style="text-align: justify;">New data on the features of development of visceral organs in embryos of egg cross chickens ‘Lohmann Brown’ under red and green monochromatic LED lighting were obtained. The effect of two continuous LED lighting modes has been studied: experimental modes - r ed and green light, control - d arkness. The absolute values of weight dimensions and specific growth rate (according to the Schmalhausen-Brody formula) of heart, muscular stomach, liver of chicken embryos were estimated using morphometric methods. The studies proved that red and green LED lighting has a stimulating effect on the embryonic development of visceral organs (heart, muscular stomach, liver) in ‘Lohmann Brown’ egg cross compared to the control (darkness). Under red and green LED stimulation, chicken embryos prevailed in the heart mass from the 14th to the 20th day of embryogenesis. The muscular stomach and liver of chicken embryos developed more intensively under red illumination on the 18th and 20th days, and under green illumination - a similar effect on the muscular stomach was noted on the 19th and 20th days, on the liver - o n the 20th day. It has been established that in the early ontogenesis of ‘Lohmann Brown’ chickens there were several critical stages (phases). They fall on different days of development and characterize the features of rhythmicity in growth processes of visceral organs in chicken embryogenesis under LED stimulation of red and green spectrum. Chicken embryos under red and green illumination had the highest growth rate of heart on the 17th and 20th day, respectively; muscular stomach under red illumination - o n the 17th and 20th days, liver - on the 16th and 17th day under red and green illumination. By the hatching period on the 20th day, there were no differences in the development of visceral organs of chicken embryos depending on red and green light spectrum. The hatching of ‘Lohmann Brown’ chicken embryos exposed to red and green light occurred on the 20th day of incubation - a day earlier than under control conditions (darkness). The proposed biological causes underlying the effect of monochromatic light of different color spectrum on embryogenesis of chicken embryo and organs are discussed.</p></abstract><trans-abstract xml:lang="ru"><p style="text-align: justify;">Получены новые данные об особенностях развития висцеральных органов у эмбрионов кур яичного кросса «Ломанн Браун» при красном и зеленом монохроматическом светодиодном освещении. Изучено влияние двух непрерывных светодиодных режимов освещения: экспериментальные режимы - красный и зеленый свет, контроль - т емнота. С помощью морфометрических методов проведена оценка абсолютных величин весовых размеров и удельной скорости роста (по формуле Шмальгаузена - Б роди) сердца, мышечного желудка, печени куриных эмбрионов. В исследованиях было доказано, что красное и зеленое светодиодное освещение оказывает стимулирующее влияние на эмбриональное развитие висцеральных органов (сердце, мышечный желудок, печень) яичного кросса «Ломанн Браун» в сравнении с контролем (темнота). При красной и зеленой светодиодной стимуляциях куриные эмбрионы преобладали в массе сердца с 14-х по 20-е сутки эмбриогенеза. Мышечный желудок и печень куриных эмбрионов интенсивнее развивались при красном освещении на 18-е и 20-е сутки, а при зеленом аналогичное воздействие на мышечный желудок отмечалось на 19-е и 20-е сутки, на печень - на 20-е сутки. Установлено, что в раннем онтогенезе кур кросса «Ломанн Браун» отмечается несколько критических этапов (фаз), выпадающих на различные сутки развития и характеризующие особенности ритмичности процессов роста висцеральных органов в эмбриогенезе кур при светодиодной стимуляции красного и зеленого спектра. У куриных эмбрионов при красном освещении наибольшая скорость роста сердца выявлена на 17-е, а при зеленом - 20-е сутки; мышечного желудка при красном освещении - на 17-е и 20-е сутки, печени - н а 16-е при красном освещении и 17-е сутки - п ри зеленом освещении. К периоду вылупления на 20-е сутки не выявлено различий в развитии висцеральных органов куриных эмбрионов в зависимости от красного и зеленого светового спектра. Вылупление куриных эмбрионов кросса «Ломанн Браун», подвергающихся красному и зеленому световому воздействию, происходило на 20-е сутки инкубации - на сутки раньше, чем в контрольных условиях (темнота). Обсуждаются предполагаемые биологические причины, лежащие в основе воздействия монохроматического света разного цветового спектра, влияющие на эмбриогенез куриного эмбриона и его органов.</p></trans-abstract><kwd-group xml:lang="en"><kwd>chicken embryogenesis</kwd><kwd>heart</kwd><kwd>muscular stomach</kwd><kwd>liver</kwd><kwd>monochromatic LED stimulation</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>эмбриогенез курицы</kwd><kwd>сердце</kwd><kwd>мышечный желудок</kwd><kwd>печень</kwd><kwd>монохроматическая светодиодная стимуляция</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Pal P, Dey D, Choudhary S, Sahu J, Kumar S, Ghosh S. Effect of light management in broiler production: A review. J Entomol Zool Stud. 2019; 7(3):437—441.</mixed-citation><mixed-citation xml:lang="ru">Pal P., Dey D., Choudhary S., Sahu J., Kumar S., Ghosh S. 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