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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">10.32634/0869-8155-2025-400-11-68-75</article-id><article-id custom-type="elpub" pub-id-type="custom">vetpress-3895</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>Идентификация SNP и генов-кандидатов, ассоциированных с массой первого яйца у кур-несушек на основе данных полногеномного генотипирования</article-title><trans-title-group xml:lang="en"><trans-title>Identification of SNPs and candidate genes associated with first egg weight in laying hens based on whole-genome genotyping data</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7191-3550</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Волкова</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Volkova</surname><given-names>N. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p> Наталья Александровна Волкова,  доктор биологических наук, главный научный сотрудник, руководитель лаборатории криобиологии   пос. Дубровицы, 60, Подольск, Московская обл., 142132 </p></bio><bio xml:lang="en"><p> Natalia Alexandrovna Volkova,  Doctor of Biological Sciences, Chief Researcher, Head of the Cryobiology Laboratory</p><p>60 Dubrovitsy, Podolsk Municipal District, Moscow Region,142132 </p></bio><email xlink:type="simple">natavolkova@inbox.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/0000-0002-2865-5960</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ветох</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Vetokh</surname><given-names>A. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p> Анастасия Николаевна Ветох,  научный сотрудник лаборатории криобиологии</p><p> пос. Дубровицы, 60, Подольск, Московская обл., 142132   </p></bio><bio xml:lang="en"><p> Anastasia Nikolaevna Vetokh,  Reasearcher at the Cryobiology Laboratory</p><p>60 Dubrovitsy, Podolsk Municipal District, Moscow Region,142132</p></bio><email xlink:type="simple">anastezuya@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/0000-0002-9407-3686</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Волкова</surname><given-names>Л. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Volkova</surname><given-names>L. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p> Людмила Александровна Волкова,  кандидат биологических наук, научный сотрудник лаборатории микробиологии</p><p> пос. Дубровицы, 60, Подольск, Московская обл., 142132 </p></bio><bio xml:lang="en"><p> Ludmila Alexandrovna Volkova,  Candidate of Biological Sciences, Researcher of the Microbiology Laboratory </p><p>60 Dubrovitsy, Podolsk Municipal District, Moscow Region,142132 </p></bio><email xlink:type="simple">ludavolkova@inbox.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Федеральный исследовательский центр животноводства — ВИЖ им. академика Л.К. Эрнста</institution><country>Россия</country></aff><aff xml:lang="en"><institution>L.K. Ernst Federal Research Center for Animal Husbandry</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>19</day><month>11</month><year>2025</year></pub-date><volume>0</volume><issue>11</issue><fpage>68</fpage><lpage>75</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Волкова Н.А., Ветох А.Н., Волкова Л.А., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Волкова Н.А., Ветох А.Н., Волкова Л.А.</copyright-holder><copyright-holder xml:lang="en">Volkova N.A., Vetokh A.N., Volkova L.A.</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/3895">https://www.vetpress.ru/jour/article/view/3895</self-uri><abstract><p>Поиск генетических маркеров, детерминирующих формирование и степень проявления перспективных фенотипов селекционно значимых признаков у кур, является одной из приоритетных задач геномной селекции, направленной на повышение и реализацию их продуктивного потенциала.Цели исследований — поиск и идентификация однонуклеотидных полиморфизмов (SNP) и генов-кандидатов, ассоциированных с массой первого яйца у кур-несушек на основе данных полногеномного генотипирования.Объектом исследований являлись куры F2 ресурсной популяции, полученной посредством межпородного скрещивания двух контрастных по яичной продуктивности пород — русской белой и корниш (n = 94). Особей оценивали по массе первого яйца в начале яйцекладки. Для полногеномного генотипирования кур F2 использовали ДНК-чип Illumina Chicken 60K SNP iSelect BeadChip. На основании полученных данных фенотипа и генотипа проводили полногеномные ассоциативные исследования.Выявлены 7 достоверно значимых SNP (p &lt; 1,06 х 10-5), ассоциированных с массой первого яйца у кур F2 ресурсной популяции. В области данных SNP идентифицированы 26 генов, в том числе в позициях SNP — 3 гена (MPP7, SNTG1, SEPTIN11). Установлено, что генотипы GG по локусу Gga_rs15141739 (ген SNTG1) и АА по локусу GGaluGA162050 детерминируют более высокую массу первого яйца у кур (р &lt; 0,01).</p></abstract><trans-abstract xml:lang="en"><p>The search for genetic markers and their identification that determine the formation and degree of manifestation of promising phenotypes for economically important traits in chickens is one of the priority tasks of genomic selection.The research objectives are to search for and identify single nucleotide polymorphisms (SNPs) and candidate genes associated with the weight of the first egg in laying hens based on genome—wide genotyping data.The object of the study was F2 hens of the resource population obtained by interbreeding two breeds with contrasting egg productivity — Russian White and Cornish (n = 94). F2 individuals were assessed by the weight of the first egg at the beginning of laying. For whole-genome genotyping of F2 hens, the Illumina Chicken 60K SNP iSelect BeadChip DNA chip was used.Based on the obtained phenotype and genotype data, whole-genome association studies were performed. Seven significant SNPs (p &lt; 1.06 x 10-5) associated with the first egg weight in F2 resource population hens were identified. The 26 genes were identified in the SNP data area, including 3 genes in SNP positions (MPP7, SNTG1, SEPTIN11). It was established that genotypes GG at the Gga_rs15141739 locus (SNTG1) and AA at the GGaluGA162050 locus cause a high weight of the first egg (p &lt; 0.01).</p></trans-abstract><kwd-group xml:lang="ru"><kwd>куры</kwd><kwd>масса яйца</kwd><kwd>SNP</kwd><kwd>гены-кандидаты</kwd><kwd>GWAS</kwd></kwd-group><kwd-group xml:lang="en"><kwd>chicken</kwd><kwd>egg weight</kwd><kwd>SNP</kwd><kwd>candidate genes</kwd><kwd>GWAS</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке Министерства науки и высшего образования РФ (тема № FGGN-2024-0015).</funding-statement><funding-statement xml:lang="en">This research was supported financially by the Ministry of Science and Higher Education of the Russian Federation (subject No. FGGN-2024-0015).</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">Буяров А.В., Буяров В.С. 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