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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">vniigis</journal-id><journal-title-group><journal-title xml:lang="ru">Российский паразитологический журнал</journal-title><trans-title-group xml:lang="en"><trans-title>Russian Journal of Parasitology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1998-8435</issn><issn pub-type="epub">2541-7843</issn><publisher><publisher-name>ВНИИП – филиал ФГБНУ ФНЦ ВИЭВ РАН</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.31016/1998-8435-2022-16-3-359-366</article-id><article-id custom-type="elpub" pub-id-type="custom">vniigis-949</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>ЛЕЧЕНИЕ И ПРОФИЛАКТИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>TREATMENT AND PREVENTION</subject></subj-group></article-categories><title-group><article-title>Профилактическая эффективность препаратов при пироплазмидозах лошадей в Горном Алтае</article-title><trans-title-group xml:lang="en"><trans-title>Prophylactic efficacy of drugs against equine piroplasmidosis in Gorny Altai</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0802-064X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Марченко</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Marchenko</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p> Виктор Алексеевич Марченко - доктор биологических наук, профессор </p><p> 656910, г. Барнаул, Научный городок, 35</p></bio><bio xml:lang="en"><p> Marchenko Viktor A.- Dr. Sc. Biol., Professor </p><p> 35 Scientific town, Barnaul, 656910 </p></bio><email xlink:type="simple">oestrus@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/0000-0002-5930-5306</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Рар</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Rar</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p> Вера Александровна Рар - кандидат биологических наук </p><p> 630090, г. Новосибирск, пр. Лаврентьева, 8 </p></bio><bio xml:lang="en"><p> Rar Vera A. - Cand. Sc. Biol. </p><p>8 Lavrentieva Pr., Novosibirsk, 630090 </p></bio><email xlink:type="simple">rarv@niboch.nsc.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8934-0778</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бирюков</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Biryukov</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p> Иван Владимирович Бирюков - кандидат ветеринарных наук, доцент </p><p> 656910, г. Барнаул, Научный городок, 35 </p></bio><bio xml:lang="en"><p> Biryukov Ivan V. - Cand. Sc. Vet., Associate Professor</p><p> 35 Scientific town, Barnaul, 656910 </p></bio><email xlink:type="simple">ivan.219@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Федеральный Алтайский научный центр агробиотехнологий</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal Altai Scientific Center of Agro-Bio Technologies</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт химической биологии и фундаментальной медицины СО РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of Chemical Biology and Fundamental Medicine of the Siberian Branch of the RAS</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>26</day><month>09</month><year>2022</year></pub-date><volume>16</volume><issue>3</issue><fpage>359</fpage><lpage>366</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Марченко В.А., Рар В.А., Бирюков И.В., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Марченко В.А., Рар В.А., Бирюков И.В.</copyright-holder><copyright-holder xml:lang="en">Marchenko V.A., Rar V.A., Biryukov I.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://vniigis.elpub.ru/jour/article/view/949">https://vniigis.elpub.ru/jour/article/view/949</self-uri><abstract><p>Цель исследований – изучить профилактическую эффективность пироплазмоцидных препаратов и выяснить влияние профилактических доз имидокарба дипропионата на выживаемость возбудителей заболевания.Материалы и методы. 150 головам лошадей внутримышечно вводили бабезан 12% из расчета по действующему веществу имидокарба дипропионата 2,5 мг/кг массы тела и 30 головам двукратно вводили неозидин М в дозе по ДВ 2,5 мл на 100 кг живой массы с интервалом 15 сут. Контрольной группе животных препарат не вводили. Клиническое наблюдение за состоянием животных опытной и контрольной групп осуществляли в течение 72 сут. Перед началом опыта и спустя 14 сут после введения препаратов исследовали пробы крови методом двухраундовой ПЦР в присутствии родоспецифичных праймеров из области гена 18S рРНК на наличие ДНК Babesia spp. / Theileria spp. Установление видовой принадлежности и генотипирование обнаруженных пироплазм проводили посредством секвенирования фрагментов гена 18S рРНК.Результаты и обсуждение. Из 12 обследованных лошадей в пробах крови у 8 животных (66,7%) обнаружена ДНК пираплазмид, из них 50,0% идентифицированы как Theileria equi и 16,7% как Babesia caballi. Высокий уровень встречаемости ДНК T. equi (свыше 50,0%) свидетельствует об эндемичном течении тейлериоза лошадей. Применение бабезана 12% при ранней химиотерапии лошадей позволяет профилактировать заболеваемость тейлериозом в течение 48 и 59 сут. Двукратная химиотерапия лошадей неозидином М с интервалом 15 сут предотвращает заболеваемость в течение 52 сут. Бабезан 12% в профилактической дозе не оказывает воздействия на выживаемость персестирующих стадий T. equi.</p></abstract><trans-abstract xml:lang="en"><p>The purpose of the research is to study the prophylactic efficacy of piroplasmicides and to elucidate the effect of prophylactic doses of Imidocarb Dipropionate on the pathogen viability.Materials and methods. Babezan 12% was intramuscularly injected to 150 horses based on the active substance of Imidocarb Dipropionate at 2.5 mg/kg of the body weight and Neosidin M was injected to 30 horses twice at a dose of 2.5 mL per 100 kg of the live weight with a 15-day interval. The control group of animals did not receive the drug. The clinical follow-up of the experimental and control animals’ condition was done for 72 days. Before the experiment and 14 days after the drugs, blood samples were examined by the nested PCR in the presence of genus-specific primers from the 18S rRNA gene sequence for the Babesia spp. / Theileria spp. DNA. Species identification and genotyping of the detected Piroplasma were performed by sequencing 18S rRNA gene fragments.Results and discussion. Among 12 examined horses, 8 animals (66.7%) had the Piroplasmida DNA found in the blood samples, of which 50.0% were identified as Theileria equi and 16.7% as Babesia caballi. A high T. equi DNA prevalence (over 50.0%) indicates an endemic course of equine theileriosis. Babesan 12% in early chemotherapy of the horses helped to prevent the incidence of theileriosis within 48 and 59 days. Double chemotherapy of the horses with Neosidin M with a 15-day interval prevented the morbidity for 52 days. Babesan 12% at the preventive dose had no effect on the viability of persistent T. equi stages.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>лошадь</kwd><kwd>Theileria equi</kwd><kwd>Babesia caballi</kwd><kwd>пироплазмоциды</kwd><kwd>эффективность</kwd></kwd-group><kwd-group xml:lang="en"><kwd>horse</kwd><kwd>Theileria equi</kwd><kwd>Babesia caballi</kwd><kwd>piroplasmicides</kwd><kwd>efficacy</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке РФФИ и Республики Алтай в рамках научного проекта № 20-44-040004, проектов Государственного задания ФБГНУ ФАНЦА (№ 0534-2021-0005) и ИХБФМ СО РАН (№ 0245- 2021-0008).</funding-statement><funding-statement xml:lang="en">The study was financially supported by the Russian Foundation for Basic Research and the Republic of Altai within Scientific Project No. 20-44-040004, and the State Task Projects of the Federal Altai Scientific Center of AgroBio Technologies (No. 0534-2021-0005) and of the Institute of Chemical Biology and Fundamental Medicine of the Siberian Branch of the RAS (No. 0245-2021-0008).</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">Князев С. 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