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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">10.47612/0134-9732-2022-57-1-139-146</article-id><article-id custom-type="elpub" pub-id-type="custom">zootech-1680</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>ПЕРСПЕКТИВЫ СОЗДАНИЯ ПЛЕМЕННЫХ СТАД С ЖЕЛАТЕЛЬНЫМИ ГЕНОТИПАМИ ПО β-КАЗЕИНУВ РЕСПУБЛИКЕ БЕЛАРУСЬ</article-title><trans-title-group xml:lang="en"><trans-title>PROSPECTS FOR CREATING PEDIGREE HERDS WITH DESIRABLE β-CASEIN GENOTYPESIN THE REPUBLIC OF BELARUS</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>Шейко</surname><given-names>И. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Sheiko</surname><given-names>I. P.</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>Песоцкий</surname><given-names>Н. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Pesotsky</surname><given-names>N. I.</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>Климец</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Klimets</surname><given-names>N. V.</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>Коронец</surname><given-names>И. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Koronets</surname><given-names>I. N.</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>Научно-практический центр Национальной академии наук Беларуси по животноводству</institution></aff><aff xml:lang="en"><institution>Scientific and Practical Center of the National Academy of Sciences of Belarus for Animal Breeding</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>139</fpage><lpage>146</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Шейко И.П., Песоцкий Н.И., Климец Н.В., Коронец И.Н., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Шейко И.П., Песоцкий Н.И., Климец Н.В., Коронец И.Н.</copyright-holder><copyright-holder xml:lang="en">Sheiko I.P., Pesotsky N.I., Klimets N.V., Koronets I.N.</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/1680">https://zootech.belal.by/jour/article/view/1680</self-uri><abstract><p>Создание племенных стад молочного скота с желательными генотипами по β-казеину в Республике Беларусь является актуальной задачей отечественного молочного скотоводства. В настоящее время, наряду с оценкой основных селекционируемых признаков, во многих странах мира проводится тестирование и отбор коров желательных генотипов по β-казеину с целью улучшения качественных характеристик молока. В статье представлены результаты оценка 252 коров селекционных стад разных пород по генотипам β-казеина методом ПДРФ, разводимых в ГП «ЖодиноАгроПлемЭлита» Смолевичского, ОАО «Городея» Несвижского, ГП «Экспериментальная база «Криничная» Мозырского и УСП«Новый Двор - Агро» Свислочского районов. Установлено, что наилучшим соотношением желательного А2А2 и нежелательного А1А1 генотипов характеризовались коровы симментальской породы - 64,0 и 4,0 % соответственно. Длясоздания селекционных стад, а также отбора матерей ремонтных быков с учётом генотипов по β-казеину является предварительный отбор ремонтных тёлок с желательным генотипом А2А2.</p></abstract><trans-abstract xml:lang="en"><p>Creation of pedigree herds of dairy cattle with desirable β-casein genotypes in the Republic of Belarus is an urgent task of domestic dairy cattle breeding. Currently, along with the evaluation of basic selection traits, many countries around the world test and select cows with desirable β-casein genotypes in order to improve the quality characteristics of milk. The article presents the results of evaluation of 252 cows of breeding herds of different breeds for β-casein genotypes by the RFLP method, bred in SE “ZhodinoAgroPlemElita” of Smolevichi district, JSC “Gorodeya” of Nesvizh district, SE “Experimental base “Krinichnaya” of Mozyr district and UAE “Noviy Dvor - Agro” of Svisloch district. The Simmental cows showed the best ratio of de- sirable A2A2 and undesirable A1A1 genotypes - 64.0 and 4.0% respectively. To create breeding herds as well as to select dams of replacement bulls taking into account β-casein genotypes, preliminary selection of replacement heifers with the desirable genotype A2A2 is required.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>племенные стада</kwd><kwd>β-казеин</kwd><kwd>молочное скотоводство</kwd><kwd>генотипы</kwd><kwd>аллели</kwd><kwd>отбор</kwd><kwd>тестирование</kwd></kwd-group><kwd-group xml:lang="en"><kwd>pedigree herds</kwd><kwd>β-casein</kwd><kwd>dairy cattle breeding</kwd><kwd>genotypes</kwd><kwd>alleles</kwd><kwd>selection</kwd><kwd>testing</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">Naturally Occurring Opioid Peptide from Cow’s Milk, Beta-Casomorphine-7, Is a Direct Histamine Releaser in Man / M. 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