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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">RUDN Journal of Agronomy and Animal Industries</journal-id><journal-title-group><journal-title xml:lang="en">RUDN Journal of Agronomy and Animal Industries</journal-title><trans-title-group xml:lang="ru"><trans-title>Вестник Российского университета дружбы народов. Серия: Агрономия и животноводство</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2312-797X</issn><issn publication-format="electronic">2312-7988</issn><publisher><publisher-name xml:lang="en">Peoples’ Friendship University of Russia named after Patrice Lumumba</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">19532</article-id><article-id pub-id-type="doi">10.22363/2312-797X-2019-14-4-481-491</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Veterinary science</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Ветеринария</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Biocidal activity of the extracts of Vernonia amygdalina against ticks responsible for livestock diseases</article-title><trans-title-group xml:lang="ru"><trans-title>Биоцидная активность экстрактов Vernonia amygdalina против клещей, вызывающих болезни скота</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Bisusa</surname><given-names>Muhimuzi</given-names></name><name xml:lang="ru"><surname>Бисуса</surname><given-names>Мухимузи</given-names></name></name-alternatives><bio xml:lang="en">Researcher in Environmental Sciences, Head of Veterinary Entomology Laboratory, Research Associate</bio><bio xml:lang="ru">научный сотрудник (науки об окружающей среде), руководитель лаборатории ветеринарной энтомологии, кафедра биологии</bio><email>bisusamuhimuzi@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Bagalwa</surname><given-names>Mashimango</given-names></name><name xml:lang="ru"><surname>Бгаруа</surname><given-names>Машиманго</given-names></name></name-alternatives><bio xml:lang="en">PhD at Makerere University, Head of the Malaria Laboratory, Researcher, NSRF, Research Center in Natural Sciences, CRSN-Lwiro; Research Associate, Evangelical University in Africa, Faculty of Agronomy and Environment</bio><bio xml:lang="ru">доктор философии (Университет Макерере), руководитель лаборатории малярии, научный сотрудник</bio><email>mashibagalwa@gmail.com</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Zirirane</surname><given-names>Dieudonné N</given-names></name><name xml:lang="ru"><surname>Зириране</surname><given-names>Н Дьедонне</given-names></name></name-alternatives><bio xml:lang="en">Master's degree in Environment, Faculty of Agronomy</bio><bio xml:lang="ru">магистр экологии, агрономический факультет</bio><email>didozirirane@gmail.com</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Mushagalusa</surname><given-names>Nachigera</given-names></name><name xml:lang="ru"><surname>Мушагалуса</surname><given-names>Начигера</given-names></name></name-alternatives><bio xml:lang="en">PhD, Faculty of Agronomy; Higher Institute of Rural Development</bio><bio xml:lang="ru">доктор философии</bio><email>mushagalusa2007@yahoo.fr</email><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Karume</surname><given-names>Katcho</given-names></name><name xml:lang="ru"><surname>Каруме</surname><given-names>Катчо</given-names></name></name-alternatives><bio xml:lang="en">PhD, Goma Volcanic Observatory, Department of Geochemistry and Environment; Ordinary Professor, Dean of Agronomy Faculty</bio><bio xml:lang="ru">доктор философии; профессор, декан факультета агрономии</bio><email>kkatcho@yahoo.com</email><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff4"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Research Center in Natural Sciences</institution></aff><aff><institution xml:lang="ru">Центр естественных наук</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Evangelical University in Africa</institution></aff><aff><institution xml:lang="ru">Евангелический университет в Африке</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Higher Institute of Rural Development</institution></aff><aff><institution xml:lang="ru">Высший институт развития сельских районов</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">Goma Volcanological Observatory</institution></aff><aff><institution xml:lang="ru">Вулканологическая обсерватория Гома</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2019-12-15" publication-format="electronic"><day>15</day><month>12</month><year>2019</year></pub-date><volume>14</volume><issue>4</issue><issue-title xml:lang="en">VOL 14, NO4 (2019)</issue-title><issue-title xml:lang="ru">ТОМ 14, №4 (2019)</issue-title><fpage>481</fpage><lpage>491</lpage><history><date date-type="received" iso-8601-date="2019-12-29"><day>29</day><month>12</month><year>2019</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2019, Bisusa M., Bagalwa M., Zirirane D.N., Mushagalusa N., Karume K.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2019, Бисуса М., Бгаруа М., Зириране Н.Д., Мушагалуса Н., Каруме К.</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="en">Bisusa M., Bagalwa M., Zirirane D.N., Mushagalusa N., Karume K.</copyright-holder><copyright-holder xml:lang="ru">Бисуса М., Бгаруа М., Зириране Н.Д., Мушагалуса Н., Каруме К.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">http://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://agrojournal.rudn.ru/agronomy/article/view/19532">https://agrojournal.rudn.ru/agronomy/article/view/19532</self-uri><abstract xml:lang="en">Biocidal activity of Vernonia amygdalina was assessed on Rhipicephalus appendiculatus ticks responsible for livestock diseases in North and South-Kivu provinces. In vitro trials were conducted in the laboratory of Lwiro Research Center for Natural Sciences to determine the lethal dose for different days after ticks contact with extracts. Five different dosages of 1.25, 2.5, 5, 10, 20 g/mL were evaluated. Water was considered as positive control and Batycol as negative control. The phytochemical screening of extracts of Vernonia amygdalina plant shows that this plant contains several substances responsible for acaricidal activity, mainly saponins, terpenoids, steroids and tannins. The experiment shows a mortality rate that varies with the concentration of the extracts; the most fatal is 20 g/mL and decreases with exposure time. The aqueous extracts showed a progressive decrease in mortality compared to ethanol extracts. This is due to the dissolution of the substances responsible for this insecticidal activity. The study recommends the application of aqueous extracts of Vernonia amygdalina in the fight against cattle ticks. Indeed, this is a natural insecticide available and easier to prepare, non-toxic to humans and is rapidly degraded in the environment.</abstract><trans-abstract xml:lang="ru">Биоцидную активность Vernonia amygdalina оценивали на клещах Rhipicephalus appendiculatus , ответственных за заболевания скота в северных и южных провинциях Киву. Испытания в пробирке проводились в лаборатории Научно-исследовательского центра Лвиро, чтобы определить смертельную дозу для разных сроков после контакта клещей с экстрактами. Были оценены пять различных доз 1,25, 2,5, 5, 10, 20 г/мл. Вода рассматривалась как положительный, а Батикол - отрицательный контроль. Фитохимическая обработка экстрактов растения Vernonia amygdalina показывает, что это растение содержит несколько веществ, ответственных за акарицидную активность, в основном сапонины, терпеноиды, стероиды и дубильные вещества. Эксперимент показывает уровень смертности, который зависит от концентрации экстрактов (наиболее фатальна 20 г/мл) и уменьшается со временем воздействия. Водные экстракты показали прогрессивное снижение смертности по сравнению с этанольными экстрактами. Это связано с растворением веществ, ответственных за инсектицидную активность. В исследовании рекомендуется применение в борьбе с клещами крупного рогатого скота водных экстрактов Vernonia amygdalina , природного инсектицида, доступного и легко приготавливаемого, не токсичного для человека и быстро разлагающегося в окружающей среде.</trans-abstract><kwd-group xml:lang="en"><kwd>biocidal</kwd><kwd>Rhipicephalus appendiculatus</kwd><kwd>Vernonia amygdalina</kwd><kwd>aqueous extract</kwd><kwd>ethanolic extract</kwd><kwd>Rhipicephalus appendiculatus</kwd><kwd>Vernonia amygdalina</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>биоцидный</kwd><kwd>водный экстракт</kwd><kwd>этанольный экстракт</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Gitau GK, Perry BD, McDermont JJ. The incidence, morbidity and mortality due to Theileria parva infections in smallholder dairy farms in Muranga District, Kenya. 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