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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">zootech</journal-id><journal-title-group><journal-title xml:lang="ru">Зоотехническая наука Беларуси</journal-title><trans-title-group xml:lang="en"><trans-title>Zootechnical Science of Belarus</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0134-9732</issn><publisher><publisher-name>Научно-практический центр Национальной академии наук Беларуси по животноводству</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.47612/0134-9732-2022-57-1-38-44</article-id><article-id custom-type="elpub" pub-id-type="custom">zootech-1669</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>ГЕНЕТИКА, РАЗВЕДЕНИЕ, СЕЛЕКЦИЯ, БИОТЕХНОЛОГИЯ РАЗМНОЖЕНИЯИ ВОСПРОИЗВОДСТВО</subject></subj-group></article-categories><title-group><article-title>ВЗАИМОСВЯЗЬ ГЕНА COX4I2 СО СПОРТИВНЫМИ КАЧЕСТВАМИ ЛОШАДЕЙ ТРАКЕНЕНСКОЙИ ГАННОВЕРСКОЙ ПОРОД</article-title><trans-title-group xml:lang="en"><trans-title>RELATIONSHIP OF THE COX4I2 GENE WITH THE ATHLETIC PERFORMANCE OF TRAKEHNER AND HANOVERIAN HORSES</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>Будревич</surname><given-names>О. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Budrevich</surname><given-names>O. L.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.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>Вишневец</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Vishnevets</surname><given-names>A. V.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Витебская ордена «Знак Почёта» государственная академия ветеринарной медицины</institution></aff><aff xml:lang="en"><institution>Vitebsk State Academy of Veterinary Medicine</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>07</day><month>09</month><year>2022</year></pub-date><volume>57</volume><issue>1</issue><fpage>38</fpage><lpage>44</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Будревич О.Л., Вишневец А.В., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Будревич О.Л., Вишневец А.В.</copyright-holder><copyright-holder xml:lang="en">Budrevich O.L., Vishnevets A.V.</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://zootech.belal.by/jour/article/view/1669">https://zootech.belal.by/jour/article/view/1669</self-uri><abstract><p>Спортивный потенциал лошадей зависит от эффективности использования животными энергии, вырабатываемой посредством аэробных и анаэробных метаболических процессов, не исключая и иные факторы. В связи с этим целью исследования стало установить взаимосвязь гена COX4I2 со спортивными качествами лошадей тракененской и ганноверской пород. Полученные данные показали, что животные тракененской и ганноверской пород, имеющие генотип COX4I2ТТ, превосходят лошадей с генотипами COX4I2СС и COX4I2СТ в стиле рыси, галопа, прыжка, работоспособности, а также по двигательным, прыжковым качествам при выездке, конкуре, троеборье.</p></abstract><trans-abstract xml:lang="en"><p>The athletic potential of horses depends on the efficiency of the animal’s use of energy produced through aerobic and anaerobic metabolic processes, not excluding other factors. In this regard, the aim of the study was to determine the relationship between the COX4I2 gene and the athletic performance of Trakehner and Hanoverian horses. Data obtained show that Trakehner and Hanoverian horses with the COX4I2ТТ genotype are superior to horses with the COX4I2СС and COX4I2СТ genotypes in trotting, cantering, jumping, work capacity, as well as in moving and jumping abilities at dressage, triathlon.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>спортивные лошади</kwd><kwd>порода</kwd><kwd>ген COX4I2</kwd><kwd>генотип</kwd><kwd>взаимосвязь</kwd><kwd>двигательные</kwd><kwd>прыжковые качества</kwd><kwd>работоспособность</kwd></kwd-group><kwd-group xml:lang="en"><kwd>sporting horses</kwd><kwd>breed</kwd><kwd>COX4I2 gene</kwd><kwd>genotype</kwd><kwd>relationship</kwd><kwd>moving and jumping abilities</kwd><kwd>work capacity</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">Жалдыбин, В. В. Коневодство, исторический опыт развития, состояния и перспективы применения лошадей в Республике Беларусь / В. В. 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