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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">wool</journal-id><journal-title-group><journal-title xml:lang="ru">Овцы, козы, шерстяное дело</journal-title><trans-title-group xml:lang="en"><trans-title>Sheep, goats, wool business</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2074-0840</issn><publisher><publisher-name>РГАУ-МСХА</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.26897/2074-0840-2026-2-44-50</article-id><article-id custom-type="elpub" pub-id-type="custom">wool-518</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>МОРФОЛОГИЯ, ФИЗИОЛОГИЯ, БИОХИМИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MORPHOLOGY, PHYSIOLOGY, BIOCHEMISTRY</subject></subj-group></article-categories><title-group><article-title>Особенности минерального обмена у баранчиков на рапсовом и люпиновом рационах</article-title><trans-title-group xml:lang="en"><trans-title>Features of mineral metabolism in young rams on rapeseed and lupine diets</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Юлдашбаев</surname><given-names>Ю. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Yuldashbaev</surname><given-names>Yu. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Юсупжан Артыкович Юлдашбаев, доктор с.-х. наук, профессор, академик РАН, зав. кафедрой частной зоотехнии</p><p>127434, г. Москва, ул. Тимирязевская, 49</p><p>тел.: 8 499-;976-02-36</p></bio><bio xml:lang="en"><p>Yusupzhan A. Yuldashbaev, doctor of Agricultural Sciences, professor, Academician of the Russian Academy of Sciences, Head of the Department of Private Animal Science</p><p>127434, Moscow, Timiryazevskaya St., 49</p><p>tel.: 8 499-976-02-36</p></bio><email xlink:type="simple">yuldashbaev@rgau-msha.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Карамушкина</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Karamushkina</surname><given-names>S. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Светлана Владимировна Карамушкина, канд. биол. наук, доцент кафедры патологии, морфологии и физиологии</p><p>127434, г. Москва, ул. Тимирязевская, 49</p><p>тел. 8 914 591 03 46</p></bio><bio xml:lang="en"><p>Svetlana V. Karamushkina, Candidate of Biological Sciences, Associate Professor of the Department of Pathology, Morphology and Physiology</p><p>127434, Moscow, Timiryazevskaya St., 49</p><p>tel.: 8 914 591 03 46</p></bio><email xlink:type="simple">sveta.vetmed@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мурадян</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Muradyan</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Екатерина Андреевна Мурадян, ассистент кафедры физиологии, этологии и биохимии животных</p><p>127434, г. Москва, ул. Тимирязевская, 49</p><p>тел.: 8 (499) 976-37-38</p></bio><bio xml:lang="en"><p>Ekaterina A. Muradyan, Assistant of the Department of Animal Physiology, Ethology, and Biochemistry</p><p>127434, Moscow, Timiryazevskaya St., 49</p></bio><email xlink:type="simple">muradyan@rgau-msha.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБОУ ВО Российский государственный аграрный университет – МСХА имени К.А. Тимирязева</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Russian State Agrarian University – Moscow Agricultural Academy named after K.A. Timiryazev</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФГБОУ ВО Российский государственный аграрный университет – МСХА имени К.А. Тимирязева</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Russian State Agrarian University – Moscow Agricultural Academy named after K.A. Timiryazev</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>22</day><month>07</month><year>2026</year></pub-date><volume>0</volume><issue>2</issue><fpage>44</fpage><lpage>50</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Юлдашбаев Ю.А., Карамушкина С.В., Мурадян Е.А., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Юлдашбаев Ю.А., Карамушкина С.В., Мурадян Е.А.</copyright-holder><copyright-holder xml:lang="en">Yuldashbaev Y.A., Karamushkina S.V., Muradyan E.A.</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://wool.timacad.ru/jour/article/view/518">https://wool.timacad.ru/jour/article/view/518</self-uri><abstract><p>В работе представлены результаты хронического физиологического эксперимента с использованием в качестве альтернативных источников протеина семян рапса и люпина белого. Методом периодов на фистулированных баранчиках при интенсивном откорме изучена постпрандиальная динамика кальция и фосфора в дуоденальном химусе и крови при введении в рацион (30% от концентратов) экспериментальных белковых кормов. Установлено, что низкоалкалоидный люпин метаболически безопасен, сохраняет нормальный обмен кальция и фосфора как на уровне кишечника, так и в сыворотке крови. Семена рапса блокируют рефлекторное выделение элементов с пищеварительными соками в сложнорефлекторную фазу пищеварения, снижая уровень кальция на 22,1% и фосфора на 18,6% (p &lt;0,001) по отношению к контролю. В рубцовую фазу пищеварения при всасывании минеральных веществ из кишечника: экспериментальные корма формируют «транзитный фитатный блок», при котором концентрация кальция и фосфора увеличивается в химусе, но в кровь они не всасываются, что снижает фосфор крови на 40,1%. Одновременно наблюдается компенсаторный лейкоцитоз (рост WBC в 3,05 раза; связь r = – 0,91; p &lt;0,001)</p></abstract><trans-abstract xml:lang="en"><p>This paper presents the results of a chronic physiological experiment using rapeseed and white lupine as alternative protein sources. Using the period method, postprandial calcium and phosphorus dynamics in duodenal chyme and blood were studied in fistulated rams during intensive fattening after the introduction of experimental protein feeds (30% of concentrates) into the diet. Low-alkaloid lupine has been shown to be metabolically safe, maintaining normal calcium and phosphorus metabolism both in the intestines and in the blood serum. Rapeseed inhibits the reflex release of elements via digestive juices during the complex reflex phase of digestion, reducing calcium levels by 22,1% and phosphorus by 18,6% (p &lt; 0,001) relative to the control. During the rumen phase of digestion, during intestinal mineral absorption, experimental feeds form a “transit phytate block,” in which calcium and phosphorus concentrations increase in the chyme but are not absorbed into the blood, reducing blood phosphorus by 40,1%. Compensatory leukocytosis is also observed (WBC increase by 3.05 times; correlation r = –0,91; p &lt;0,001).</p></trans-abstract><kwd-group xml:lang="ru"><kwd>баранчики</kwd><kwd>белый люпин</kwd><kwd>семена рапса</kwd><kwd>дуоденальный химус</kwd><kwd>фосфор</kwd><kwd>фитатный блок</kwd></kwd-group><kwd-group xml:lang="en"><kwd>young rams</kwd><kwd>white lupin</kwd><kwd>rapeseed seeds</kwd><kwd>duodenal chyme</kwd><kwd>phosphorus</kwd><kwd>phytate block</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Морозова В.А. Альтернативные источники протеина в животноводстве ● Ветеринария и кормление, 2022. № 2. 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