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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">ivm</journal-id><journal-title-group><journal-title xml:lang="ru">Международный вестник ветеринарии</journal-title><trans-title-group xml:lang="en"><trans-title>International Journal of Veterinary Medicine</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2072-2419</issn><publisher><publisher-name>SpbGUVM Publishing House</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.52419/issn2072-2419.2025.1.354</article-id><article-id custom-type="elpub" pub-id-type="custom">ivm-1652</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>АКУШЕРСТВО, ГИНЕКОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>OBSTETRICS, GYNECOLOGY</subject></subj-group></article-categories><title-group><article-title>Количественная и качественная эхографическая характеристика яичников у собак в период эструса</article-title><trans-title-group xml:lang="en"><trans-title>Quantitative and qualitative echographic characteristics of ovaries in dogs during estrus</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9643-2080</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Цыганский</surname><given-names>Р. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Tsyganski</surname><given-names>R. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Цыганский Р.А. – д-р биол. наук, проф. каф. физиологии, хирургии и акушерства </p></bio><bio xml:lang="en"><p>Tsyganski R.A. – doctor of biological sciences, professor of the Department of Physiology, Surgery and Obstetrics </p></bio><email xlink:type="simple">gypsyrom@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/0009-0003-2494-9800</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Яковлева</surname><given-names>У. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Yakovleva</surname><given-names>U. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Яковлева У.С. – асп. каф. физиологии, хирургии и акушерства</p></bio><bio xml:lang="en"><p>Yakovleva U.S. – postgraduate student of the Department of Physiology, Surgery and Obstetrics </p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБОУ ВО «Ставропольский государственный аграрный университет»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Stavropol State Agrarian University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>03</day><month>06</month><year>2025</year></pub-date><volume>0</volume><issue>1</issue><fpage>354</fpage><lpage>363</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Цыганский Р.А., Яковлева У.С., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Цыганский Р.А., Яковлева У.С.</copyright-holder><copyright-holder xml:lang="en">Tsyganski R.A., Yakovleva U.S.</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://vetjournal.spbguvm.ru/jour/article/view/1652">https://vetjournal.spbguvm.ru/jour/article/view/1652</self-uri><abstract><p>Статья посвящена количественной и качественной эхографической характеристике структур яичников у собак в период эструса, значимости фолликулярного индекса эхогенности при выявлении овуляции. Объект исследования 27 половозрелых разнопородных самок собак, от периода проэстуса до диэструса. Животные были разделены на 3 группы: первая группа – собаки массой до 5 кг (n=12), вторая группа – собаки с массой 6-20 кг (n=8), третья группа – собаки с массой более 20 кг (n=7). Исследования проведены в Ветеринарном центре им. Пирогова г.Ставрополя на сканере SIUI Apogee 1100 Omni (Shantou Institute of Ultrasonic Instruments Co., Ltd., Guangdong, China) по общепринятой методике c использованием мультичастотного линейного датчика с частотой 7,5-12 МГц в B-режиме. Количественные параметры эхогенности яичников и фолликулов определяли, используя методики Силиной Т.Л., с соавт. (2010) и Цыганского Р.А. (2020). Установлены специфические эхографические маркёры процесса овуляции, в виде увеличения гиперэхогенной каймы фолликулов 0,1-0,2 см или потери четкости контура фолликулов с уменьшением их размеров, утратой симметрии фолликулов, уменьшением количества фолликулов на 30-40%. В течение эструса меняется фолликулярный индекс эхогенности (ФИЭ), т.е. соотношение количественных единиц эхогенности стромы и фолликулов. В начале проэструса данный индекс 1,5-1,7, кконцу проэструса 2,0-2,5, что указывает на снижение эхогенности фолликулов в процессе фолликулогенеза, после овуляции данный индекс снижался менее значения 2,0. Динамические изменения эхографических параметров яичников сопровождались увеличением концентрации прогестерона в сыворотке крови собак. Полученные качественные и количественные сонографические данные яичников собак в процессе фолликулогенеза, могут служить основой для идентификации различных стадий активной фазы полового цикла при ультразвуковом исследовании.</p></abstract><trans-abstract xml:lang="en"><p>The article is devoted to the quantitative and qualitative echographic characteristics of ovarian structures in dogs during the estrus of the sexual cycle, the significance of the follicular echogenicity index in detecting ovulation. The object of the study was 27 sexually mature female dogs of different breeds, from the period of proestrus to diestrus. The animals were divided into 3 groups: the first group - dogs weighing up to 5 kg (n = 12), the second group – dogs weighing 6-20 kg (n = 8), the third group - dogs weighing more than 20 kg (n = 7). The studies were carried out at the Pirogov Veterinary Center in Stavropol on a SIUI Apogee 1100 Omni scanner (Shantou Institute of Ultrasonic Instruments Co., Ltd., Guangdong, China) according to the generally accepted technique using a multi-frequency linear sensor with a frequency of 7.5-12 MHz in B-mode. The quantitative parameters of the echogenicity of the ovaries and follicles were determined using the techniques of Silina T.L. et al. (2010) and Tsygansky R.A. (2020). Specific echographic markers of the ovulation process have been established, in the form of an increase in the hyperechoic border of follicles by 0.1-0.2 cm or loss of clarity of the follicle contour with a decrease in their size, loss of follicle symmetry, a decrease in the number of follicles by 30-40%. During estrus, the follicular echogenicity index (FEI – the ratio of quantitative units of echogenicity of the stroma and follicles). At the beginning of proestrus, this index is 1.5-1.7, by the end of proestrus 2.0-2.5, which indicates a decrease in the echogenicity of the follicles during folliculogenesis, after ovulation, this index decreased below 2.0. Dynamic changes in the echographic parameters of the ovaries were accompanied by an increase in the concentration of progesterone in the blood serum of dogs. The obtained qualitative and quantitative sonographic data of the ovaries of dogs in the process of folliculogenesis can serve as a basis for identifying various stages of the active phase of the sexual cycle during ultrasound examination.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>собаки</kwd><kwd>ультразвуковое исследование (УЗИ)</kwd><kwd>эхогенность</kwd><kwd>эходенситометрия</kwd><kwd>половой цикл</kwd><kwd>яичники</kwd><kwd>эструс</kwd></kwd-group><kwd-group xml:lang="en"><kwd>dogs</kwd><kwd>ultrasound examination</kwd><kwd>echogenicity</kwd><kwd>echodensitometry</kwd><kwd>sexual cycle</kwd><kwd>ovaries</kwd><kwd>estrus</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">Цыганский Р.А. Количественные характеристики эхогенности пищеварительного канала у собак / Р.А. 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