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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/issn2072-2419.2025.4.534</article-id><article-id custom-type="elpub" pub-id-type="custom">ivm-1921</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>АКУШЕРСТВО, ГИНЕКОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>OBSTETRICS, GYNECOLOGY</subject></subj-group></article-categories><title-group><article-title>Оценка генетического разнообразия, показателей продуктивных качеств и воспроизводительной способности голштинского скота по гену SELPₑₓ₈</article-title><trans-title-group xml:lang="en"><trans-title>Assessment of genetic diversity, indicators productive qualities and reproductive capacity of Holstein cattle according to the SELPₑₓ₈ gene</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1184-3188</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сафина</surname><given-names>Н. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Safina</surname><given-names>N. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>канд. биол. наук, ст. науч. сотр. </p></bio><bio xml:lang="en"><p>Candidate of Biological Sciences, Senior Researcher</p></bio><email xlink:type="simple">natysafina@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/0000-0002-2970-1500</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гайнутдинова</surname><given-names>Э. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Gaynutdinova</surname><given-names>E. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>асп., науч. сотр.</p></bio><bio xml:lang="en"><p>Postgraduate Student, Researcher</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/0000-0002-6083-2883</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Фаттахова</surname><given-names>З. Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Fattakhova</surname><given-names>Z. F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>канд. биол. наук, ст. науч. сотр. </p></bio><bio xml:lang="en"><p>Candidate of Biological Sciences, Senior Researcher</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Татарский научно-исследовательский институт сельского хозяйства ФИЦ КазНЦ РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Tatar Scientific Research Institute of Agriculture “Kazan Scientific Center of Russia Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>30</day><month>12</month><year>2025</year></pub-date><volume>0</volume><issue>4</issue><fpage>534</fpage><lpage>543</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Сафина Н.Ю., Гайнутдинова Э.Р., Фаттахова З.Ф., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Сафина Н.Ю., Гайнутдинова Э.Р., Фаттахова З.Ф.</copyright-holder><copyright-holder xml:lang="en">Safina N.Y., Gaynutdinova E.R., Fattakhova Z.F.</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/1921">https://vetjournal.spbguvm.ru/jour/article/view/1921</self-uri><abstract><p>Исследование посвящено оценке влияния полиморфизма гена SELPₑₓ₈ (Val475Met) на генетические параметры, продуктивные и репродуктивные качества голштинского скота. Ген SELPₑₓ₈, кодирующий Pселектин, играет ключевую роль в иммунных и воспалительных процессах, а также участвует в формировании репродуктивной функции. В ходе работы были генотипированы 258 коров СХПК «ПЗ им. Ленина» Атнинского района и 67 быков-производителей АО «ГПП «Элита» Высокогорского района Республики Татарстан. В результате идентификации было установлено, что в обеих тестируемых группах преобладает аллель G – 0,835 и 0,791 у коров и быков соответственно. В поголовье коров встречаемость генотипов составила: GG – 69,0%, GA – 29,1% и AA – 1,9%. Среди быков не обнаружены особи-носители генотипа AA гена SELPₑₓ₈, генотип GG имел долю 58,2%, а GA – 41,8%. Проведенный ассоциативный анализ полиморфных вариантов гена SELPₑₓ₈ с хозяйственно-полезными признаками показал, что особи с генотипом AA имеют рекордный уровень удоев, но при этом в молоке зафиксировано повышенное количество соматических клеток. Они так же характеризовались сниженной фертильностью и коротким периодом хозяйственного использования. Животные с генотипом GA демонстрировали повышенное содержание массовой доли жира и белка (%), а также выход молочного жира и белка. При этом они значимо (p ≤ 0,05…0,01) превосходили сверстниц с другими генотипами по воспроизводительным качествам и продолжительностью хозяйственного использования. Полученные данные подчеркивают потенциал гена SELPₑₓ₈ в качестве генетического маркера для программ селекции, направленных на улучшения здоровья, продуктивности и долголетия молочного скота. Исследование выполнено в рамках государственного задания, регистрационный номер 125031003428-9.</p></abstract><trans-abstract xml:lang="en"><p>The study is devoted to assessing the effect of SELPₑₓ₈ gene polymorphism (Val475Met) on genetic parameters, productive and reproductive performance of Holstein cattle. The SELPₑₓ₈ gene encoding Pselectin, plays a key role in immune and inflammatory processes, and is also involved in the formation of reproductive function. The research involved genotyping 258 cows from the Lenin Breeding Farm Integrated Agricultural Production Center (IAPC), and 67 sires of the Parent breeding enterprise Elite (SC GPP), Vysokogorsky District, Republic of Tatarstan. As a result of identification, it was found that the G allele predominates in both tested groups: 0.835 and 0.791 in cows and bulls, respectively. Genotype distribution among cows was: GG - 69.0%, GA - 29.1 and AA - 1.9 %. No AA genotypes were detected in bulls, with GG at 58.2% and GA at 41.8% Association analysis demonstrated that AA genotype animals achieved record milk yields but showed elevated somatic cell counts, reduced fertility, and shorter period of economic use. GA genotype animals exhibited significantly (p ≤ 0.05…0.01) higher milk fat and protein content (both percentage and yield), along with superior reproductive performance and longevity compared to other genotypes. The obtained data highlight the potential of the SELPₑₓ₈ gene as a genetic marker for selection programs aimed at improving the health, productivity and longevity of dairy cattle. The study was carried out within the framework of the state assignment, registration number 125031003428-9.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>ген</kwd><kwd>биоразнообразие</kwd><kwd>полиморфизм</kwd><kwd>SELPₑₓ₈</kwd><kwd>P-селектин</kwd><kwd>продуктивность</kwd><kwd>удой</kwd><kwd>жир</kwd><kwd>белок</kwd><kwd>фертильность</kwd><kwd>скот</kwd><kwd>быки</kwd></kwd-group><kwd-group xml:lang="en"><kwd>gene</kwd><kwd>biodiversity</kwd><kwd>polymorphism</kwd><kwd>SELPₑₓ₈</kwd><kwd>P-selectin</kwd><kwd>productivity</kwd><kwd>milk yield</kwd><kwd>fat</kwd><kwd>protein</kwd><kwd>fertility</kwd><kwd>cattle</kwd><kwd>bulls</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена по государственному заданию: «Совершенствование комплексных отечественных технологий селекции, растениеводства и животноводства на основе идентификации высокоценных генотипов, молекулярно-генетических методов, биотехнологий, конструирования адаптивных и высокопродуктивных агробиоценозов и агроэкосистем для производства экологической и функциональной продукции. Номер регистрации: 125031003428-9».</funding-statement><funding-statement xml:lang="en">The work was carried out according to a state assignment: «Improvement of complex domestic technologies of breeding, crop and livestock farming on the basis of identification of highvalue genotypes, molecular-genetic methods, biotechnology, design of adaptive and highly productive agrobiocoenosis and agroecosystems for the production of ecological and functional products. Registration number: 125031003428-9».</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">Safina N.Y. Combination of polymorphism of the TFAM gene with growth dynamics, milk productivity and reproductive characteristics of cow-heifers / N.Y. Safina, T.M. Akhmetov, S.K. 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