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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">izvestiiatimacad</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Тимирязевской сельскохозяйственной академии</journal-title><trans-title-group xml:lang="en"><trans-title>IZVESTIYA OF TIMIRYAZEV AGRICULTURAL ACADEMY</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0021-342X</issn><publisher><publisher-name>ФГБОУ ВО РГАУ-МСХА имени К.А. Тимирязева</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.26897/0021-342X-2025-5-135-147</article-id><article-id custom-type="elpub" pub-id-type="custom">izvestiiatimacad-1075</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>ЗООТЕХНИЯ, БИОЛОГИЯ И ВЕТЕРИНАРНАЯ МЕДИЦИНА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>LIVESTOCK BREEDING, BIOLOGY AND VETERINARY MEDICINE</subject></subj-group></article-categories><title-group><article-title>Пищевая и энергетическая ценность мясной продукции телок разных пород и разного направления продуктивности при интенсивном выращивании</article-title><trans-title-group xml:lang="en"><trans-title>Nutritional and energy value of meat products from heifers of different breeds and production types under intensive rearing</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7150-1131</contrib-id><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, д-р с.-х. наук, академик РАН, профессор, профессор кафедры частной зоотехнии</p><p>127550, г. Москва, ул. Тимирязевская, 49</p></bio><bio xml:lang="en"><p>Yusupzhan A. Yuldashbaev, DSc (Ag), Full Member of the Russian Academy of Sciences, Professor, Professor at the Department of Private Zootechny</p><p>49 Timiryazevskaya St., Moscow, 127550 </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"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4754-1771</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Косилов</surname><given-names>В. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Kosilov</surname><given-names>V. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Владимир Иванович Косилов, д-р с.-х. наук, профессор, профессор кафедры технологии производства и переработки продукции животноводства</p><p>460014, г. Оренбург, ул. Челюскинцев, 18</p></bio><bio xml:lang="en"><p>Vladimir I. Kosilov, DSc (Ag), Professor, Professor at the Department of Technology of Production and Processing of Livestock Products</p><p>18 Chelyuskintsev St., Orenburg, 460014</p></bio><email xlink:type="simple">kosilov_vi@bk.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0906-8362</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Никонова</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Nikonova</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Елена Анатольевна Никонова, д-р с.-х. наук, доцент, профессор кафедры технологии производства и переработки продукции животноводства</p><p>460014, г. Оренбург, ул. Челюскинцев, 18</p></bio><bio xml:lang="en"><p>Elena A. Nikonova, DSc (Ag), Professor, Professor at the Department of Technology of Production and Processing of Livestock Products</p><p>18 Chelyuskintsev St., Orenburg, 460014</p></bio><email xlink:type="simple">nikonovaea84@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7771-7291</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Рахимжанова</surname><given-names>И. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Rakhimzhanova</surname><given-names>I. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ильмира Агзамовна Рахимжанова, д-р с.-х. наук, доцент, заведующий кафедрой электротехнологии и электрооборудования</p><p>460014, г. Оренбург, ул. Челюскинцев, 18</p></bio><bio xml:lang="en"><p>Ilmira A. Rakhimzhanova, DSc (Ag), Associate Professor, Head of the Department of Electrical Engineering and Electrical Equipment</p><p>18 Chelyuskintsev St., Orenburg, 460014</p></bio><email xlink:type="simple">kaf36@orensau.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2295-5150</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Герасимов</surname><given-names>Н. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Gerasimov</surname><given-names>N. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Николай Павлович Герасимов, д-р биол. наук, ведущий научный сотрудник отдела разведения мясного скота</p><p>460000, г. Оренбург, ул. 9 января, 29</p></bio><bio xml:lang="en"><p>Nikolay P. Gerasimov, DSc (Bio), Leading Research Associate at the Department of Beef Cattle Breeding</p><p>29 9ogo Yanvarya St., Orenburg, 460000 </p></bio><email xlink:type="simple">nick.gerasimov@rambler.ru</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Российский государственный аграрный университет – МСХА имени К.А. Тимирязева</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Russian State Agrarian University – Moscow Timiryazev Agricultural Academy</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Оренбургский государственный аграрный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Orenburg State Agrarian University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Федеральный научный центр биологических систем и агротехнологий</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal Research Centre of Biological Systems and Agrotechnologies RAS</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>06</day><month>11</month><year>2025</year></pub-date><volume>0</volume><issue>5</issue><fpage>135</fpage><lpage>147</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Юлдашбаев Ю.А., Косилов В.И., Никонова Е.А., Рахимжанова И.А., Герасимов Н.П., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Юлдашбаев Ю.А., Косилов В.И., Никонова Е.А., Рахимжанова И.А., Герасимов Н.П.</copyright-holder><copyright-holder xml:lang="en">Yuldashbaev Y.A., Kosilov V.I., Nikonova E.A., Rakhimzhanova I.A., Gerasimov N.P.</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://izvestiia.timacad.ru/jour/article/view/1075">https://izvestiia.timacad.ru/jour/article/view/1075</self-uri><abstract><p>Реализация программы значительного наращивания производственного потенциала мясного животноводства должна базироваться на рациональном использовании доступных породных ресурсов, что подразумевает и задействование сверхремонтного молодняка в качестве контингента для откорма. Целью исследований являлась оценка пищевой ценности средней пробы мяса-фарша и выхода питательных веществ в съедобной части туши телок красной степной (I гр.), симментальской (II гр.) и казахской белоголовой (III гр.) пород. Установлено, что телки I гр. уступали сверстницам II и III гр. по массовой доле сухого вещества в средней пробе мяса фарша на 2,21 и 3,81%, экстрагируемого жира – на 1,09 и 2,59%, протеина – на 1,11 и 1,20%. При этом преимущество телок III гр. над молодняком II гр. по величине анализируемых показателей составляло 1,60, 1,50 и 0,09% соответственно. Отмечалось преимущество телок II и III гр. над сверстницами I гр. по выходу сухого вещества в съедобной части туши, которое составляло 11,88 кг (21,54%) и 15,15 кг (28,10%). По выходу белка телки I гр. уступали молодняку II и III на 6,43 кг (22,36%) и 6,39 кг (22,22%), экстрагируемого жира – на 5,79 кг (23,32%) и 8,26 кг (33,27%). Это обусловило более высокую энергетическую ценность мясной продукции телок симментальской и казахской белоголовой пород II и III гр. при лидирующем положении последних.</p></abstract><trans-abstract xml:lang="en"><p>The implementation of a program aimed at significantly increasing the production potential of beef cattle breeding should be based on the efficient utilization of available breed resources, which implies the involvement of surplus replacement heifers as a component for fattening. The aim of this study was to assess the nutritional value of an average sample of minced meat and the yield of nutrients in the edible portion of the carcass of red steppe (Group I), Simmental (Group II), and Kazakh white-headed (Group III) heifers. It was found that Group I heifers were inferior to their counterparts in Groups II and III in terms of the mass fraction of dry matter in the average minced meat sample by 2.21% and 3.81%, extractable fat by 1.09% and 2.59%, and protein by 1.11% and 1.20%. Moreover, Group III heifers showed an advantage over Group II heifers in the magnitude of the analyzed parameters, which amounted to 1.60%, 1.50%, and 0.09%, respectively. Heifers in Groups II and III exhibited a higher yield of dry matter in the edible portion of the carcass compared to their Group I counterparts, amounting to 11.88 kg (21.54%) and 15.15 kg (28.10%). In terms of protein yield, Group I heifers were inferior to those in Groups II and III by 6.43 kg (22.36%) and 6.39 kg (22.22%), and in extractable fat by 5.79 kg (23.32%) and 8.26 kg (33.27%). This resulted in a higher energy value of beef products from Simmental and Kazakh white-headed heifers in Groups II and III, with the latter holding a leading position.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>Скотоводство</kwd><kwd>телки</kwd><kwd>красная степная порода</kwd><kwd>симментальская порода</kwd><kwd>казахская белоголовая порода</kwd><kwd>средняя проба мяса</kwd><kwd>химический состав</kwd><kwd>выход питательных веществ</kwd><kwd>энергетическая ценность</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Cattle breeding</kwd><kwd>heifers</kwd><kwd>red steppe breed</kwd><kwd>Simmental breed</kwd><kwd>Kazakh white-headed breed</kwd><kwd>average meat sample</kwd><kwd>chemical composition</kwd><kwd>nutrient yield</kwd><kwd>energy value</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">Джуламанов К.М., Бактыгалиева А.Т., Колпаков В.И., Джуламанов Е.Б. 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