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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">10.32634/0869-8155-2025-390-01-93-99</article-id><article-id custom-type="elpub" pub-id-type="custom">vetpress-3420</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>Состояние исследований главного комплекса гистосовместимости (OLA) у овец</article-title><trans-title-group xml:lang="en"><trans-title>Status of research on the major histocompatibility complex (OLA) in sheep</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9895-8046</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Марзанова</surname><given-names>С. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Marzanova</surname><given-names>S. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Саида Нурбиевна Марзанова,кандидат биологических наук, доцент</p><p>ул. Академика К.И. Скрябина, 23, Москва, 109472</p></bio><bio xml:lang="en"><p>Saida Nurbievna Marzanova, Candidate of Biological Sciences, Associate Professor</p><p>23 Акаdemik Skriabin Str., Moscow, 109472</p></bio><email xlink:type="simple">s.marzanova@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/0000-0002-1747-2800</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Девришов</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Devrishov</surname><given-names>D. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Давудай Абдулсемедович Девришов, доктор биологических наук, профессор</p><p>ул. Академика К.И. Скрябина, 23, Москва, 109472</p></bio><bio xml:lang="en"><p>Davuday Abdulsemedovich Devrishov, Doctor of Biological Sciences, Professor</p><p>23 Акаdemik Skriabin Str., Moscow, 109472</p></bio><email xlink:type="simple">davud@mgavm.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/0000-0003-0427-8977</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Фатахов</surname><given-names>К. Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Fatakhov</surname><given-names>K. F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Курбан Фатахович Фатахов, кандидат ветеринарных наук</p><p>ул. Академика К.И. Скрябина, 23, Москва, 109472</p></bio><bio xml:lang="en"><p>Kurban Fatakhovich Fatakhov, Candidate of Veterinary Sciences</p><p>23 Акаdemik Skriabin Str., Moscow, 109472</p></bio><email xlink:type="simple">fat.kurban1995@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/0000-0003-0708-6196</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Марзанов</surname><given-names>Н. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Marzanov</surname><given-names>N. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Нурбий Сафарбиевич Марзанов, доктор биологических наук, профессор</p><p>пос. Дубровицы, 60, Подольск, Московская обл., 142132</p></bio><bio xml:lang="en"><p>Nurbiy Safarbievich Marzanov, Doctor of Biological Sciences, Professor</p><p>60 Dubrovitsy settlement, Podolsk, Moscow region, 142132</p></bio><email xlink:type="simple">nmarzanov@yandex.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Московская государственная академия ветеринарной медицины и биотехнологии — МВА им. К.И. Скрябина<country>Россия</country></aff><aff xml:lang="en">Moscow State Academy of Veterinary Medicine and Biotechnology — MVA by K.I. Skryabin<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">Федеральный исследовательский центр — ВИЖ им. академика Л.К.Эрнста<country>Россия</country></aff><aff xml:lang="en">L.K. Ernst Federal Research Center for Animal Husbandry<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>29</day><month>01</month><year>2025</year></pub-date><volume>1</volume><issue>1</issue><fpage>93</fpage><lpage>99</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Марзанова С.Н., Девришов Д.А., Фатахов К.Ф., Марзанов Н.С., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Марзанова С.Н., Девришов Д.А., Фатахов К.Ф., Марзанов Н.С.</copyright-holder><copyright-holder xml:lang="en">Marzanova S.N., Devrishov D.A., Fatakhov K.F., Marzanov N.S.</copyright-holder><license 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/3420">https://www.vetpress.ru/jour/article/view/3420</self-uri><abstract><p>Актуальность. Изучение полиморфизма генов главного комплекса гистосовместимости, номенклатуры локусов, обозначения аллелей OLA у овец, ассоциативная связь с резистентностью или чувствительностью к паразитарным и инфекционным болезням.Цель исследования — состояние изученности главного комплекса гистосовместимости (OLA) у овец.В работе использовали системный анализ, статистический обзор литературных данных из российских и зарубежных источников по изученности главного комплекса гистосовместимости овец (OLA). По уровню изученности OLA овцы входят в десятку известных видов животных: приматы, собаки, кошки, лошади, овцы, козы, свиньи, крупный рогатый скот, лососи и мыши. OLA участвует в работе иммунной системы овец и кодирует белки распознавания чужеродных антигенов. Исследованиями ряда ученых показано, что гены OLA обладают значительным полиморфизмом наряду с другими генетическими маркерами. В связи с этим идет интенсивное формирование OLA номенклатуры (уже известны 10 локусов). Установлены локусы и аллели, определяющие устойчивость или чувствительность к паразитарным и другим болезням. Это позволит в дальнейшем вести отбор и формировать популяции устойчивых животных к определенным инфекционным началам. Знание генетической структуры в локусах DRB1 и DQB овец даст возможность разработать реагентно-программный комплекс для исследований по оценке уровня полиморфности OLA у различных пород овец. Генотипирование овец на ранних стадиях развития по генам главного комплекса гистосовместимости позволит выявлять животных, устойчивых или восприимчивых к заболеваниям.</p></abstract><trans-abstract xml:lang="en"><p>Relevance. To study the polymorphism of genes of the main histocompatibility complex, the nomenclature of loci, the designation of OLA alleles in sheep, the associative relationship with resistance or sensitivity to parasitic and infectious diseases.The aim of the study is the state of knowledge of the main histocompatibility complex (OLA) in sheep.System analysis, statistical review of literature data from Russian and foreign sources on the study of sheep major histocompatibility complex (OLA) were used in this work. According to the level of study of OLA, sheep are among ten known animal species: primates, dogs, cats, horses, sheep, goats, pigs, cattle, salmon and mice. OLA is involved in the immune system of sheep and encodes foreign antigen recognition proteins. Studies by a number of scientists have shown that OLA genes have significant polymorphism, along with other genetic markers. In this regard, the OLA nomenclature is being intensively formed (10 loci are already known). The loci and alleles determining resistance or susceptibility to parasitic and other diseases have been identified. This will allow further selection and formation of populations of resistant animals to certain infectious origins. Knowledge of the genetic structure in DRB1 and DQB loci of sheep will make it possible to develop a reagent-software complex for studies to assess the level of OLA polymorphism in different breeds of sheep. Genotyping of sheep at early stages of development by genes of the main histocompatibility complex will make it possible to identify animals resistant or susceptible to diseases.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>овцы</kwd><kwd>главный комплекс гистосовместимости</kwd><kwd>OLA</kwd><kwd>полиморфизм</kwd><kwd>локус</kwd><kwd>антигены</kwd><kwd>генотипы</kwd><kwd>аллели</kwd><kwd>паразитарные и инфекционные болезни</kwd></kwd-group><kwd-group xml:lang="en"><kwd>sheep</kwd><kwd>main histocompatibility complex</kwd><kwd>OLA</kwd><kwd>polymorphism</kwd><kwd>loci</kwd><kwd>antigens</kwd><kwd>genotypes</kwd><kwd>alleles</kwd><kwd>parasitoses and other infectious diseases</kwd></kwd-group><funding-group xml:lang="ru"><funding-statement>Исследование выполнено за счет гранта Российского научного фонда № 24-26-00197. https://rscf.ru/project/24-26-00197/</funding-statement></funding-group><funding-group xml:lang="en"><funding-statement>The research was carried out at the expense of a grant from the Russian Science Foundation No. 24-26-00197. https://rscf.ru/project/24-26-00197/</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">Омарова Ф.А., Дроков М.Ю., Хамаганова Е.Г. 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