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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/issn2072-2419.2025.3.63</article-id><article-id custom-type="elpub" pub-id-type="custom">ivm-1790</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>ИНФЕКЦИОННЫЕ БОЛЕЗНИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>INFECTIOUS DISEASES</subject></subj-group></article-categories><title-group><article-title>Оценка эффективности коллоидного серебра для ингибирования образования биоплёнки у возбудителей бронхопневмонии телят</article-title><trans-title-group xml:lang="en"><trans-title>Evaluation of the effectiveness of colloidal silver for inhibiting biofilm formation in pathogens of bronchopneumonia in calves</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0006-2884-9630</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Киянчук</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kiyanchuk</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>асп. каф. микробиологии, вирусологии и иммунологии, асс. каф. биохимии и физиологии</p></bio><bio xml:lang="en"><p>Postgraduate student of the Department Microbiology, Virology and Immunology, assistant of the Department of Biochemistry and Physiology</p></bio><email xlink:type="simple">kiyanchuk.margosha@yandex.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/0000-0001-9726-6339</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Борисова</surname><given-names>М. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Borisova</surname><given-names>M. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>канд. ветеринар. наук, асс. каф. микробиологии, вирусологии и иммунологии </p></bio><bio xml:lang="en"><p>Assistant of the Department Microbiology, Virology and Immunology, Ph.D. of Veterinary Sciences</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1245-3440</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сухинин</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Sukhinin</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д-р биол. наук, проф., зав. каф. микробиологии, вирусологии и иммунологии </p></bio><bio xml:lang="en"><p>Grand PhD in Biology, Full Professor, Head of the Department of Microbiology, Virology and Immunology</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБОУ ВО «Санкт-Петербургский государственный университет ветеринарной медицины» </institution><country>Россия</country></aff><aff xml:lang="en"><institution>St. Petersburg State University of Veterinary Medicine</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>07</day><month>01</month><year>2026</year></pub-date><volume>0</volume><issue>3</issue><fpage>63</fpage><lpage>71</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Киянчук М.В., Борисова М.С., Сухинин А.А., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Киянчук М.В., Борисова М.С., Сухинин А.А.</copyright-holder><copyright-holder xml:lang="en">Kiyanchuk M.V., Borisova M.S., Sukhinin A.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://vetjournal.spbguvm.ru/jour/article/view/1790">https://vetjournal.spbguvm.ru/jour/article/view/1790</self-uri><abstract><p>Микроорганизмы, способные образовывать биоплёнку, значительно устойчивы к воздействию антибиотиков и бактериофагов. Болезни крупного рогатого скота, вызванные биоплёнкообразующими возбудителями, представляют собой серьёзную проблему для скотоводства, поскольку наличие биоплёнки затрудняет применение имеющихся лечебных препаратов. Кроме того, из-за различий в концентрации антибиотиков в биопленке микробные клетки часто подвергаются воздействию концентраций ниже ингибирующих и могут выработать устойчивость. Глобальный рост устойчивости к противомикробным и химиотерапевтическим препаратам представляет собой серьёзную проблему в скотоводстве. Матрица внеклеточных полимерных веществ внутри биоплёнок может физически препятствовать проникновению антибиотиков и бактериофагов, что так же способствует выживанию и распространению бактерий с множественной лекарственной резистентностью среди сельскохозяйственных животных. Поэтому необходим поиск эффективных методов для борьбы с микроорганизмами, образующими биоплёнку. Наночастицы серебра (Ag) хорошо известны своим бактерицидным действием и способностью снижать синтез бактериальных биоплёнок. Поэтому коллоидное серебро, состоящее из наночастиц серебра, является привлекательным дополнением к имеющимся лечебно-профилактическим мероприятиям в животноводстве. В ходе проведённого исследования нами оценена интенсивность биоплёнкообразования возбудителей бронхопневмонии телят (Escherichia coli (n=30), Klebsiella pneumoniae (n=10), Proteus mirabilis (n=15), Proteus vulgaris (n=10), Pseudomonas aeruginosa (n=7), Moraxella bovoculi (n=5), Mannheimia haemolytica (n=6)) спектрофотометрическим методом в условиях отсутствия ингибиторов и при внесении коллоидного серебра. Полученные результаты демонстрируют потенциальную возможность включения коллоидного серебра в комплекс лечебно-профилактических мероприятий для борьбы с возбудителями бронхопневмонии молодняка крупного рогатого скота, способными образовывать биоплёнку.</p></abstract><trans-abstract xml:lang="en"><p>Microorganisms capable of forming biofilms are significantly resistant to antibiotics and bacteriophages. Cattle diseases caused by biofilm-forming pathogens are a serious problem for livestock production, since the presence of biofilm complicates the use of available therapeutic drugs. In addition, due to differences in antibiotic concentrations in biofilms, microbial cells are often exposed to concentrations below inhibitory concentrations and can develop resistance. The global increase in resistance to antimicrobial and chemotherapeutic drugs is a serious problem in livestock production. The matrix of extracellular polymeric substances within biofilms can physically impede the penetration of antibiotics and bacteriophages, which also contributes to the survival and spread of multidrug-resistant bacteria among farm animals. Therefore, it is necessary to find effective methods to combat biofilm-forming microorganisms. Silver nanoparticles (Ag) are well known for their bactericidal action and ability to reduce the synthesis of bacterial biofilms. Therefore, colloidal silver consisting of silver nanoparticles is an attractive addition to existing therapeutic and preventive measures in animal husbandry. In the course of the study, we assessed the intensity of biofilm formation of causative agents of calf bronchopneumonia (Escherichia coli (n = 30), Klebsiella pneumoniae (n = 10), Proteus mirabilis (n = 15), Proteus vulgaris (n = 10), Pseudomonas aeruginosa (n = 7), Moraxella bovoculi (n = 5), Mannheimia haemolytica (n = 6)) using the spectrophotometric method in the absence of inhibitors and with the introduction of colloidal silver. The obtained results demonstrate the potential possibility of including colloidal silver in a complex of therapeutic and preventive measures to combat pathogens of bronchopneumonia in young cattle that are capable of forming a biofilm.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>бронхопневмония</kwd><kwd>биоплёнка</kwd><kwd>коллоидное серебро</kwd><kwd>спектрофотомерия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>bronchopneumonia</kwd><kwd>biofilm</kwd><kwd>colloidal silver</kwd><kwd>spectrophotometry</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">Adams, J L, and R J McLean. “Impact of rpoS deletion on Escherichia coli biofilms.” Applied and environmental microbiology vol. 65,9 (1999): 4285-7. doi:10.1128/AEM.65.9.4285-4287.1999</mixed-citation><mixed-citation xml:lang="en">Adams, J L, and R J McLean. “Impact of rpoS deletion on Escherichia coli biofilms.” Applied and environmental microbiology vol. 65,9 (1999): 4285-7. doi:10.1128/AEM.65.9.4285-4287.1999</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Algburi A, Comito N, Kashtanov D, Dicks LMT, Chikindas ML. 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