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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 custom-type="elpub" pub-id-type="custom">zootech-1743</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, БИОЛОГИЯ РАЗМНОЖЕНИЯ И ВОСПРОИЗВОДСТВО</subject></subj-group></article-categories><title-group><article-title>ВЛИЯНИЕ СЕЛЕКЦИОННО-ГЕНЕТИЧЕСКИХ ПАРАМЕТРОВ НА ТОЧНОСТЬ ИНДЕКСНОЙ ОЦЕНКИ (НА ПРИМЕРЕ СВИНОВОДСТВА)</article-title><trans-title-group xml:lang="en"><trans-title>INFLUENCE OF SELECTION AND GENETIC PARAMETERS ON THE ACCURACY OF INDEX ESTIMATION (BY THE EXAMPLE OF PIG BREEDING)</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>Храмченко</surname><given-names>Н. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Khramchanka</surname><given-names>M. M.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Романенко</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Romanenko</surname><given-names>A. V.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Невар</surname><given-names>К. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Nevar</surname><given-names>K. V.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff xml:lang="ru" id="aff-1"><institution>Научно-практический центр национальной академии наук Беларуси по животноводству</institution><country>Russian Federation</country></aff><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>21</day><month>09</month><year>2023</year></pub-date><volume>58</volume><issue>1</issue><fpage>119</fpage><lpage>129</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Храмченко Н.М., Романенко А.В., Невар К.В., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Храмченко Н.М., Романенко А.В., Невар К.В.</copyright-holder><copyright-holder xml:lang="en">Khramchanka M.M., Romanenko A.V., Nevar K.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/1743">https://zootech.belal.by/jour/article/view/1743</self-uri><abstract><p>В свиноводстве, в отличии от молочного скотоводства, система производства товарной продукции состоит из разных уровней племенной работы: ядро, множители и промышленные производители. Для оптимизации расчёта экономического веса необходимо использовать методику, позволяющую разделить вклад конкретного уровня племенного предприятия, породы и пола свиней в прибыль, получаемую от производства товарного животного. В связи с этим проведён анализ изменения точности селекционного индекса в зависимости от исходных селекционно-генетических параметров и агрегатного генотипа. В исследованиях использовался комплексный индекс, предложенный для хряков производителей, включающий два признака: среднесуточный прирост (ССП) и толщину шпика (ТШ). Выявлена нелинейная зависимость надёжности и коэффициентов наследуемости, при которой увеличение надёжности составило от 5 до 13 % точности по мере роста коэффициентов наследуемости на 10 %, что свидетельствует о более надёжной оценке по признакам с высокой наследуемостью. Установлено, что экономический вес признаков оказывает влияние только на размерность разрабатываемого индекса.</p></abstract><trans-abstract xml:lang="en"><p>In pig breeding, in contrast to dairy cattle breeding, the system of commercial production consists of different levels of breeding work: nucleus, multipliers and industrial producers. To optimize the calculation of economic value, it is necessary to use a methodology that allows us to divide the contribution of a particular level of breeding enterprise, breed and gender of pigs in the profit received from the production of a marketable animal. In this connection, the analysis of changes in the accuracy of the selection index depending on the initial selection and genetic parameters and aggregate genotype was carried out. A composite index, including two traits, was used for stud boars: average daily gain (ADG) and fat thickness (FT). A non-linear dependence of reliability and heritability coefficients was found, with reliability increasing from 5% to 13% as the heritability coefficients increased by 10%, indicating a more reliable estimate for traits with high heritability. It was found that the economic value of the traits had an impact only on the dimensionality of the developed index.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>селекционный индекс</kwd><kwd>агрегатный генотип</kwd><kwd>экономическая ценность</kwd><kwd>свиньи</kwd></kwd-group><kwd-group xml:lang="en"><kwd>selection index</kwd><kwd>aggregate genotype</kwd><kwd>economic value</kwd><kwd>pigs</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">Oldenbroek, Kor. 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