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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">veterinary</journal-id><journal-title-group><journal-title xml:lang="ru">Ветеринария сегодня</journal-title><trans-title-group xml:lang="en"><trans-title>Veterinary Science Today</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2304-196X</issn><issn pub-type="epub">2658-6959</issn><publisher><publisher-name>"Veinard"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29326/2304-196X-2019-3-30-63-67</article-id><article-id custom-type="elpub" pub-id-type="custom">veterinary-431</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>ВЕТЕРИНАРНАЯ МИКРОБИОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>VETERINARY MICROBIOLOGY</subject></subj-group></article-categories><title-group><article-title>ОСОБЕННОСТИ ИНАКТИВАЦИИ БАКТЕРИЙ AVIBACTERIUM PARAGALLINARUM ФОРМАЛЬДЕГИДОМ И ТИОМЕРСАЛОМ</article-title><trans-title-group xml:lang="en"><trans-title>SPECIFIC ASPECTS OF AVIBACTERIUM PARAGALLINARUM INACTIVATION WITH FORMALDEHYDE AND THIOMERSAL</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1531-004X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Фирсова</surname><given-names>М. C.</given-names></name><name name-style="western" xml:lang="en"><surname>Firsova</surname><given-names>M. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Аспирант</p></bio><bio xml:lang="en"><p>Post-Graduate Student</p></bio><email xlink:type="simple">firsova@arriah.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/0000-0003-3053-6976</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Евграфова</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Yevgrafova</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ведущий ветеринарный врач</p></bio><bio xml:lang="en"><p>Leading Veterinarian</p></bio><email xlink:type="simple">evgrafova@arriah.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/0000-0002-3529-4809</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Потехин</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Potekhin</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Заведующий сектором, кандидат ветеринарных наук</p></bio><bio xml:lang="en"><p>Head of Sector, Candidate of Science (Veterinary Medicine)</p></bio><email xlink:type="simple">potehin@arriah.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБУ «ВНИИЗЖ», г. Владимир</institution><country>Россия</country></aff><aff xml:lang="en"><institution>FGBI "ARRIAH", Vladimir</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>03</day><month>10</month><year>2019</year></pub-date><volume>0</volume><issue>3</issue><fpage>63</fpage><lpage>67</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Фирсова М.C., Евграфова В.А., Потехин А.В., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Фирсова М.C., Евграфова В.А., Потехин А.В.</copyright-holder><copyright-holder xml:lang="en">Firsova M.S., Yevgrafova V.A., Potekhin A.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://veterinary.arriah.ru/jour/article/view/431">https://veterinary.arriah.ru/jour/article/view/431</self-uri><abstract><p>Представлены результаты по отработке режимов инактивации штамма Avibacterium paragallinarum формальдегидом и тиомерсалом. Гибель бактерий при воздействии 0,20 и 0,10% формалина идет с постоянной скоростью, то есть процессы инактивации микроорганизмов подчиняются экспоненциальной зависимости. Данное обстоятельство позволяет рассчитать показатель константы скорости инактивации, который составляет для 0,10% формалина 2,94 ± 0,37 ч-1, а для 0,20% – 5,86 ± 0,72 ч-1. Режим инактивации формалином в конечной концентрации 0,10% при температуре 37 °С и постоянном перемешивании (60 об/мин) позволяет получать 7,0 дм3  бактерина с концентрацией 9,5 ± 0,2 lg м.к./см3 за 4,3 ± 0,1 ч. Тиомерсал обладает бактерицидным действием на клетки Avibacterium paragallinarum в концентрации 0,04% (1:2500) и выше. При этом процесс инактивации характеризуется линейностью, а константа скорости инактивации составляет 7,92 ± 1,12 ч-1. При действии тиомерсала в сублетальной концентрации 0,02% (1:5000) кривая выживания имеет сложную форму. При этом процесс гибели микроорганизмов не подчиняется экспоненциальной зависимости, а значение скорости инактивации, постоянно снижаясь, стремится к нулю, в связи с чем расчет показателя константы скорости инактивации невозможен. Режим инактивации с использованием 0,04% тиомерсала при температуре 37 °С позволяет получать 7,0 дм3  бактерина с концентрацией 9,5 ± 0,2 lg м.к./см3 за 5,8 ± 0,1 ч. Гемагглютинирующая активность антигена, инактивированного тиомерсалом, сразу после приготовления была выше, чем инактивированного формалином (Р &lt; 0,05). Однако через 10 мес. хранения активность антигена, инактивированного тиомерсалом, снизилась на 3,1 log2 (Р &lt; 0,05), а инактивированного формалином – на 0,4 log2  (Р &gt; 0,05). Приготовленный с помощью формалина антиген сохраняет высокую гемагглютинирующую активность в процессе хранения, что необходимо для изготовления качественных вакцин.</p></abstract><trans-abstract xml:lang="en"><p>The paper demonstrates results of testing different modes of Avibacterium paragallinarum inactivation with formaldehyde and thiomersal. The bacterium destruction by 0.20% and 0.10% formaldehyde proceeds at the constant rate thus indicating exponential dependence of the microorganism inactivation processes. This fact allows for calculation of the inactivation rate constant that amounts to 2.94 ± 0.37 h-1 for 0.10% formaldehyde and 5.86 ± 0.72 h-1 for 0.20% formaldehyde. Inactivation using formaldehyde at final concentration of 0.10% at 37 °С and continuous stirring (60 rpm) produces 7.0 dm3 of bacterin at concentration of 9.5 ± 0.2 lg microbial cells (mc)/cm3 in 4.3 ± 0.1 h. Thiomersal demonstrated bactericidal action against Avibacterium paragallinarum at concentration of 0.04% (1:2500) or higher. Herewith, inactivation process is specified by linearity and the inactivation rate constant amounts to 7.92±1.12 h-1. Under thiomersal sublethal concentration of 0.2% (1:5000) the survival curve is of irregular shape. However, the process of the microorganism death is not exponential, and under continuous decrease, the inactivation rate is going to zero thus making impossible the calculation of the inactivation rate constant. Inactivation mode involving use of 0.04% thiomersal at 37 °С allows production of 7.0 dm3 of bacterin at 9.5 ± 0.2 lg mc/cm3 concentration in 5.8 ± 0.1 h. Right after production, the hemagglutination activity of the thiomersal inactivated antigen was higher as compared to formaldehyde inactivated antigen (Р  0.05). The antigen produced using formaldehyde maintains high hemagglutination activity during storage that is critical for high quality vaccine production.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>инфекционный ринит (гемофилез) кур</kwd><kwd>штамм</kwd><kwd>инактивация</kwd><kwd>формалин</kwd><kwd>тиомерсал</kwd><kwd>антиген</kwd><kwd>Avibacterium paragallinarum</kwd></kwd-group><kwd-group xml:lang="en"><kwd>infectious coryza (Haemophilus infection)</kwd><kwd>strain</kwd><kwd>inactivation</kwd><kwd>formaldehyde</kwd><kwd>thiomersal</kwd><kwd>antigen</kwd><kwd>Avibacterium paragallinarum</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">Биотехнология / И. В. Тихонов, Е. А. Рубан, Т. Н. Грязнева [и др.]; под ред. Е. С. Воронина. – СПб.: ГИОРД, 2005. – С. 241–268.</mixed-citation><mixed-citation xml:lang="en">Biotechnology  [Biotekhnologiya]. I.  V. Tikhonov, Ye.  A. 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