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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">vetpress</journal-id><journal-title-group><journal-title xml:lang="ru">Аграрная наука</journal-title><trans-title-group xml:lang="en"><trans-title>Agrarian science</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0869-8155</issn><issn pub-type="epub">2686-701X</issn><publisher><publisher-name>Редакция журнала "Аграрная наука"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.32634/0869-8155-2025-392-03-62-68</article-id><article-id custom-type="elpub" pub-id-type="custom">vetpress-3513</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</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ZOOTECHNICS</subject></subj-group></article-categories><title-group><article-title>Гаплотипы фертильности маточного поголовья крупного рогатого скота в Cвердловской области</article-title><trans-title-group xml:lang="en"><trans-title>Fertility haplotypes of the breeding stock of cattle in the Sverdlovsk region</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5976-6030</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лиходеевская</surname><given-names>О. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Lihodeevskaya</surname><given-names>O. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Лиходеевская Оксана Евгеньевна - кандидат биологических наук, доцент, заведующая лабораторией молекулярных и биологических исследований.</p><p>ул. Карла Либкнехта, 42, Екатеринбург, 620075</p></bio><bio xml:lang="en"><p>Oksana E. Lihodeevskaya - Candidate of Science in Biology, Associate Professor, Head of the Laboratory of Molecular and Biological Research.</p><p>42 Karl Liebknecht Str., Yekaterinburg, 620075</p></bio><email xlink:type="simple">lixodeevskaya@mail.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/0000-0003-2616-2166</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лиходеевский</surname><given-names>Г. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Lihodeevskiy</surname><given-names>G. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Лиходеевский Георгий Александрович - младший научный сотрудник.</p><p>ул. Карла Либкнехта, 42, Екатеринбург, 620075</p></bio><bio xml:lang="en"><p>Georgiy A. Lihodeevskiy - Junior Researcher.</p><p>42 Karl Liebknecht Str., Yekaterinburg, 620075</p></bio><email xlink:type="simple">georglihodey@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/0000-0002-6584-2394</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Богатова</surname><given-names>П. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Bogatova</surname><given-names>P. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Богатова Полина Сергеевна - младший научный сотрудник.</p><p>ул. Карла Либкнехта, 42, Екатеринбург, 620075</p></bio><bio xml:lang="en"><p>Polina S. Bogatova - Junior Researcher.</p><p>42 Karl Liebknecht Str., Yekaterinburg, 620075</p></bio><email xlink:type="simple">bogatova.p.s@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Уральский государственный аграрный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Ural State Agrarian University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>21</day><month>03</month><year>2025</year></pub-date><volume>0</volume><issue>3</issue><fpage>62</fpage><lpage>68</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Лиходеевская О.Е., Лиходеевский Г.А., Богатова П.С., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Лиходеевская О.Е., Лиходеевский Г.А., Богатова П.С.</copyright-holder><copyright-holder xml:lang="en">Lihodeevskaya O.E., Lihodeevskiy G.A., Bogatova P.S.</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://www.vetpress.ru/jour/article/view/3513">https://www.vetpress.ru/jour/article/view/3513</self-uri><abstract><p>Выявление летальных и нежелательных мутаций в популяциях маточного поголовья черно-пестрого скота остается актуальным, несмотря на то что быки-производители исследуются на широкий спектр известных генетических аномалий. Впервые в Свердловской области началось исследование маточного поголовья крупного рогатого скота молочного направления продуктивности на носительство летальных генов. Для исследования были отобраны по 48 половозрастных коров 2008–2013 годов рождения из четырех племенных организаций области. Генотипирование отобранных особей проводили на чипах GGP Bovine 150K. Проведенное генотипирование маточного поголовья подтвердило сохранение в стадах в скрытом состоянии мутантных форм аллелей генов CD18, APAF1, SDC2 и GART, вызывающих синдромы BLAD и гаплотипы фертильности HH1, HH3 и HH4 соответственно. Особей — носительниц патологии синдактилии, цитруллинемии и DUMPS обнаружено не было. Наибольшая доля гетерозиготных особей принадлежит летали HH1 (7%), доли носительства других мутаций не превышают 4%. По сельскохозяйственным организациям носительство распределено неравномерно в связи с индивидуальным подходом отдельного хозяйства к приобретению семени в племенных организациях по искусственному осеменению сельскохозяйственных животных. С помощью статистического анализа определены пять быков-производителей — носителей летальных аллелей, генеалогическим методом продемонстрирована высокая вероятность носительства мутаций для трех из них. Несмотря на выбытие быков-носителей, летальные формы гена могут сохраняться в поголовье за счет гетерозиготных коров. Полученные результаты демонстрируют широкую распространенность носительства исследуемых аллелей в большинстве генеалогических линий быков голштинского происхождения.</p></abstract><trans-abstract xml:lang="en"><p>The detection of lethal and undesirable mutations in maternal Black Pied cattle populations remains relevant, despite bulls being routinely screened for a wide range of known genetic anomalies. For the first time in Sverdlovsk Oblast, a study has been initiated to investigate the carriage of lethal genes in dairy-oriented maternal cattle. For the study, 48 sexually mature cows born between 2008 and 2013 were selected from four breeding organizations in the region. Genotyping of the sampled individuals was performed using GGP Bovine 150K chips. The genotyping confirmed the latent persistence of mutant allele forms of the CD18, APAF1, SDC2, and GART genes in the herds, which cause BLAD syndrome and fertility haplotypes HH1, HH3, and HH4, respectively. No carriers of syndactyly, citrullinemia, or DUMPS pathologies were identified. The highest proportion of heterozygous individuals was associated with the lethal HH1 haplotype (7%), while the carriage rates for other mutations did not exceed 4%. The distribution of carriers across agricultural enterprises was uneven, reflecting individual farm practices in sourcing semen from breeding organizations for artificial insemination. Statistical analysis identified five carrier bulls with lethal alleles, and genealogical methods demonstrated a high probability of mutation carriage for three of them. Despite the removal of carrier bulls, lethal gene forms may persist in the population through heterozygous cows. The results highlight the widespread prevalence of the studied alleles across most genealogical lines of Holstein-origin bulls.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>генетические маркеры</kwd><kwd>гаплотипы фертильности</kwd><kwd>крупный рогатый скот</kwd><kwd>селекция</kwd></kwd-group><kwd-group xml:lang="en"><kwd>genetic markers</kwd><kwd>fertility haplotypes</kwd><kwd>cattle</kwd><kwd>breeding</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено при финансовой поддержке Российского научного фонда № 23-26-00260. https://rscf.ru/project/23-26-00260/</funding-statement><funding-statement xml:lang="en">The research was carried out with the financial support of the Russian Science Foundation No. 23-26-00260. https://rscf.ru/project/23-26-00260/</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">Зиновьева Н.А. 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