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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">10.31016/1998-8435-2023-17-2-242-249</article-id><article-id custom-type="elpub" pub-id-type="custom">vniigis-1043</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>БИОХИМИЯ, БИОТЕХНОЛОГИЯ И ДИАГНОСТИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>BIOCHEMISTRY, BIOTECHNOLOGY AND DIAGNOSTICS</subject></subj-group></article-categories><title-group><article-title>Молекулярная диагностика представителей рода Cryptosporidium у свиней в условиях частных фермерских хозяйств Вологодской области Северо-Западного Федерального Округа РФ</article-title><trans-title-group xml:lang="en"><trans-title>Molecular diagnostics of Cryptosporidium species in pigs on private farms in the Vologda Region of the North-Western Federal District of the Russian Federation</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7015-8063</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кряжев</surname><given-names>А. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Kryazhev</surname><given-names>A. L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Андрей Леонидович Кряжев, доктор ветеринарных наук </p><p>160555, г. Вологда, п. Молочное, ул. Шмидта, 2  </p></bio><bio xml:lang="en"><p>Kryazhev Andrey L., Doctor of Veterinary Sciences </p><p>2 Schmidta st., Vologda, Molochnoe, 160555</p></bio><email xlink:type="simple">kamarnett@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/0000-0002-6919-8524</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Новиков</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Novikov</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p> Артём Сергеевич Новиков,  кандидат ветеринарных наук </p><p>160555, г. Вологда, п. Молочное, ул. Шмидта, 2  </p></bio><bio xml:lang="en"><p>Novikov Artem S., Candidate of Veterinary Sciences </p><p>2 Schmidta st., Vologda, Molochnoe, 160555</p></bio><email xlink:type="simple">vetnovikov@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">ФГБОУ ВО Вологодская государственная молочно-хозяйственная академия имени Н. В. Верещагина<country>Россия</country></aff><aff xml:lang="en">FSBEI HE Vologda State Dairy Farming Academy named after N. V. Vereshchagin<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>19</day><month>06</month><year>2023</year></pub-date><volume>17</volume><issue>2</issue><fpage>242</fpage><lpage>249</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Кряжев А.Л., Новиков А.С., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Кряжев А.Л., Новиков А.С.</copyright-holder><copyright-holder xml:lang="en">Kryazhev A.L., Novikov A.S.</copyright-holder><license 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/1043">https://vniigis.elpub.ru/jour/article/view/1043</self-uri><abstract><p>Цель исследований – определение зараженности и степени выделения ооцист с последующей идентификацией таксонов представителей рода Cryptosporidium у поросят различного возраста при помощи новейших молекулярно-генетических методик в условиях частных фермерских хозяйств Вологодской области Северо-Западного федерального округа РФ.Материалы и методы. Данные исследования в Российской Федерации выполнены впервые. Исследования проводили в условиях частных фермерских хозяйств по выращиванию свиней, расположенных на территории Вологодской области Северо-Западного Федерального Округа РФ с января по сентябрь 2022 г. Фекалии брали от поросят различных возрастов, а именно поросят-сосунов в возрасте до 1 мес., отъемышей (1–3 мес.), поросят на откорме (от 4 мес. и старше), а также от подсосных свиноматок. Возрастные группы были сформированы с учетом технологических параметров содержания животных в хозяйствах. При помощи микроскопических методов исследования выявляли «положительные» пробы, в которых обнаружены ооцисты рода Cryptosporidium, и число ооцист. В дальнейшем пробы исследовали с использованием оборудования ЦКП «Геномные технологии, протеомика и клеточная биология» ФГБНУ ВНИИСХМ». Идентификацию видов рода Cryptosporidium в пробах фекалий животных проводили с помощью высокопроизводительного секвенирования ампликонных библиотек фрагментов гена 18S рРНК, полученных в результате проведения nested (вложенной) ПЦР.Результаты и обсуждение. Представители рода Cryptosporidium были выявлены в каждой исследуемой возрастной группе, причем как у животных с признаками расстройства пищеварения, так и у животных без клинических признаков болезни. Средняя инвазированность поголовья криптоспоридиями в частных фермерских хозяйствах составила 32,4%. Наиболее инвазированы ооцистами криптоспоридий поросята-откормочники в возрасте 4–6 мес. – 72%. В результате секвенирования библиотек фрагментов гена 18S рРНК, полученных с использованием выбранных праймеров, и последующего таксономического анализа полученных нуклеотидных последовательностей было показано, что во всех исследованных образцах присутствуют представители только вида Cryptosporidium scrofarum.</p></abstract><trans-abstract xml:lang="en"><p>The purpose of the research is to determine infection rate and oocyst isolation degree followed by identification of taxa of Cryptosporidium species in piglets of different age groups using the latest molecular genetic methods, on private farms in the Vologda Region of the North-Western Federal District of the Russian Federation.Materials and methods. These studies were performed in the Russian Federation for the first time. The research was performed on private pig farms located in the Vologda Region of the North-Western Federal District of the Russian Federation from January to September 2022. Feces were taken from piglets of different age groups, namely, sucklings under the age of 1 month, weaners (1–3 months), feeder pigs (4 months and older), as well as from milking sows. Age groups were formed taking into consideration technological parameters of keeping animals on farms. Using microscopic research methods, “positive” samples were detected in which Cryptosporidium oocysts were found, and the number of oocysts was determined. Subsequently, the samples were studied using the equipment of the resource center «Genomic Technologies, Proteomics and Cell Biology» of ARRIAM. Cryptosporidium species were identified in samples of animal feces using high-throughput sequencing of 18S rRNA gene fragment amplicon libraries as obtained by nested PCR.Results and discussion. Cryptosporidium species were identified in each studied age group both in the animal’s presenting indigestion and the animals without any clinical sign of the disease. The average cryptosporidium infection rate was 32.4% in the animals on private farms. The most infected with cryptosporidium oocysts were feeder pigs aged 4–6 months (72%). As a result of sequencing of 18S rRNA gene fragment amplicon libraries obtained using selected primers and subsequent taxonomic analysis of the resulting nucleotide sequences, it was shown that only representatives of the Cryptosporidium scrofarum species were present in all the studied samples.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>криптоспоридиоз</kwd><kwd>Cryptosporidium scrofarum</kwd><kwd>ооцисты</kwd><kwd>ПЦР</kwd><kwd>ДНК</kwd><kwd>секвенирование</kwd><kwd>18S рРНК</kwd><kwd>поросята</kwd><kwd>Вологодская область</kwd><kwd>Российская Федерация</kwd></kwd-group><kwd-group xml:lang="en"><kwd>cryptosporidiosis</kwd><kwd>Cryptosporidium scrofarum</kwd><kwd>oocysts</kwd><kwd>PCR</kwd><kwd>DNA</kwd><kwd>sequencing</kwd><kwd>18S rRNA</kwd><kwd>piglets</kwd><kwd>Vologda Region</kwd><kwd>Russian Federation</kwd></kwd-group><funding-group xml:lang="ru"><funding-statement>Исследование выполнено за счет гранта Российского научного фонда № 22-26-00002 (https://rscf.ru/project/22-26-00002/). Молекулярно-генетические исследования выполнены с использованием оборудования ЦКП «Геномные технологии, протеомика и клеточная биология» ФГБНУ ВНИИСХМ» (г. Пушкин, СПб.).</funding-statement></funding-group><funding-group xml:lang="en"><funding-statement>The study was supported by the Russian Science Foundation Grant No. 22-26-00002 (https://rscf.ru/project/22-26-00002/). The study was carried out using the equipment of the resource center «Genomic Technologies, Proteomics and Cell Biology» of ARRIAM (Pushkin, St. Petersburg).</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">Васильева В. А. Криптоспоридиоз и эзофагостомоз свиней при моноинвазиях и паразитоценозе: автореф. дис. … д-ра вет. наук. М., 1998. 41 с.</mixed-citation><mixed-citation xml:lang="en">Vasilyeva V. A. Cryptosporidiosis and esophagostomosis of pigs with monoinvasions and parasitocenosis: Extended abstract of Doctor’s thesis. Мoscow, 1998; 41. (In Russ.)</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Горбов Ю. К., Мачинский А. П. Распространение ассоциативных заболеваний сельскохозяйственных животных и опыт борьбы с ними в Мордовской АССР // Паразитоценозы и ассоциативные болезни. М., 1984. С. 235-252.</mixed-citation><mixed-citation xml:lang="en">Gorbov Yu. K., Machinsky A. P. The spread of associative diseases of livestock animals and the experience of their control in the Mordovian Autonomous Soviet Socialist Republic. Parazitotsenozy i assotsiativnyye bolezni = Parasitocenosis and associative diseases. Мoscow, 1984; 235-252. (In Russ.)</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Кряжев А. Л. Криптоспоридиоз телят в хозяйствах молочной специализации Северо-Запада России (эпизоотология, клиническая картина, терапия и профилактика): дис. … канд. вет. наук. М., 2005. 152 с.</mixed-citation><mixed-citation xml:lang="en">Kryazhev A. L. Cryptosporidiosis of calves on dairy farms in the North-West of Russia (epizootology, clinical picture, therapy and prevention): autoref. dis. … cand. vet. sci. Мoscow, 2005; 152. (In Russ.)</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Кряжев А. Л., Лемехов П. А. Криптоспоридиоз телят в хозяйствах молочной специализации Северо-Западного региона России. Монография. Вологда–Молочное: ИЦ ВГМХА, 2010. 111 с.</mixed-citation><mixed-citation xml:lang="en">Kryazhev A. L., Lemekhov P. A. Cryptosporidiosis of calves on dairy farms in the North-West of Russia. Monograph. Vologda-Molochnoe: Research Center of the Vologda State Dairy Farming Academy named after N. V. Vereshchagin, 2010; 111. (In Russ.)</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Кряжев А. Л., Новиков А. С., Никитин В. Ф. Эпизоотологическая ситуация по криптоспоридиозу поросят в промышленном свиноводстве Вологодской области // Ветеринария. 2020. № 1. С. 30-34. https://doi.org/10.30896/0042-4846.2020.23.1.30-34</mixed-citation><mixed-citation xml:lang="en">Kryazhev A. L., Novikov A. S., Nikitin V. F. Epizootological situation on cryptosporidiosis in piglets in industrial pig farming of the Vologda Region. Veterïnarïya = Veterinary Medicine. 2020; 1: 30-34. (In Russ.) https://doi.org/10.30896/0042-4846.2020.23.1.30-34</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Никитин В. Ф., Павласек И. Ассоциация гельминтов и кокцидий у телят в животноводческих комплексах // II Всесоюзный съезд паразитологов: тезисы докладов (Киев, октябрь 1983). Киев: Наукова думка, 1983. С. 235-246.</mixed-citation><mixed-citation xml:lang="en">Nikitin V. F., Pavlasek I. Association of helminths and coccidia in calves in livestock complexes. II Vsesoyuznyy s"yezd parazitologov: tezisy dokladov (Kiyev, oktyabr' 1983) = II All-Union Congress of Parasitologists: abstracts (Kiev, October 1983). Kiev: Naukova Dumka, 1983; 235-246.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Новиков А. С., Кряжев А. Л. Криптоспоридиоз поросят в условиях северо-западного Нечерноземья РФ. Монография. Вологда–Молочное: Вологодская ГМХА, 2022. 112 с.</mixed-citation><mixed-citation xml:lang="en">Novikov A. S., Kryazhev A. L. Cryptosporidiosis of piglets in the northwestern Non-Black Earth Zone of the Russian Federation. Monograph. Vologda-Molochnoe: Vologda State Dairy Farming Academy named after N. V. Vereshchagin, 2022; 112. (In Russ.).</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Johnson J., Buddle R., Reid S., Armson A., Ryan U. Prevalence of Cryptosporidium genotypes in pre and post-weaned pigs in Australia. Exp. Parasitol. 2008; 119 (3): 418-421. https://doi.org/10.1016/j.exppara.2008.04.009</mixed-citation><mixed-citation xml:lang="en">Johnson J., Buddle R., Reid S., Armson A., Ryan U. Prevalence of Cryptosporidium genotypes in pre and post-weaned pigs in Australia. Exp. Parasitol. 2008; 119 (3): 418-421. https://doi.org/10.1016/j.exppara.2008.04.009</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Kaupke A. Gawor J., Rzeżutka A., Gromadka R. Identification of pig-specific Cryptosporidium species in mixed infections using Illumina sequencing technology. Exp. Parasitol. 2017; 182. 22-25. https://doi.org/10.1016/j.exppara.2017.09.020</mixed-citation><mixed-citation xml:lang="en">Kaupke A. Gawor J., Rzeżutka A., Gromadka R. Identification of pig-specific Cryptosporidium species in mixed infections using Illumina sequencing technology. Exp. Parasitol. 2017; 182. 22-25. https://doi.org/10.1016/j.exppara.2017.09.020</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Kotloff K. L., Nataro J. P., Blackwelder W. C. et al. Burden and aetiology of diarrhoeal disease in infants and young children in developing countries (the Global Enteric Multicenter Study, GEMS): a prospective, case-control study. The Lancet. 2013; 382 (9888): 209-222. https://doi.org/10.1016/S0140-6736(13)60844-2</mixed-citation><mixed-citation xml:lang="en">Kotloff K. L., Nataro J. P., Blackwelder W. C. et al. Burden and aetiology of diarrhoeal disease in infants and young children in developing countries (the Global Enteric Multicenter Study, GEMS): a prospective, case-control study. The Lancet. 2013; 382 (9888): 209-222. https://doi.org/10.1016/S0140-6736(13)60844-2</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Kváč M., Kestřánová M., Pinková M. et al. Cryptosporidium scrofarum n. sp. (Apicomplexa: Cryptosporidiidae) in domestic pigs (Sus scrofa). Vet. Parasitol. 2013; 191 (3-4): 218-227. https://doi.org/10.1016/j.vetpar.2012.09.005</mixed-citation><mixed-citation xml:lang="en">Kváč M., Kestřánová M., Pinková M. et al. Cryptosporidium scrofarum n. sp. (Apicomplexa: Cryptosporidiidae) in domestic pigs (Sus scrofa). Vet. Parasitol. 2013; 191 (3-4): 218-227. https://doi.org/10.1016/j.vetpar.2012.09.005</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Němejc K., Sak B., Květoňová D. et al. Occurrence of Cryptosporidium suis and Cryptosporidium scrofarum on commercial swine farms in the Czech Republic and its associations with age and husbandry practices. Parasitol. Res. 2013; 112 (3): 1143-1154. https://doi.org/10.1007/s00436-012-3244-8</mixed-citation><mixed-citation xml:lang="en">Němejc K., Sak B., Květoňová D. et al. Occurrence of Cryptosporidium suis and Cryptosporidium scrofarum on commercial swine farms in the Czech Republic and its associations with age and husbandry practices. Parasitol. Res. 2013; 112 (3): 1143-1154. https://doi.org/10.1007/s00436-012-3244-8</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Pavlásek I. Cryptosporidia: biology, diagnosis, host spectrum, specificity, and the environment. Remedia Klin. Mikrobiol. 1999; 3: 290-301.</mixed-citation><mixed-citation xml:lang="en">Pavlásek I. Cryptosporidia: biology, diagnosis, host spectrum, specificity, and the environment. Remedia Klin. Mikrobiol. 1999; 3: 290-301.</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Pettersson E., Ahola H., Frössling J. et al. Detection and molecular characterisation of Cryptosporidium spp. in Swedish pigs. Acta Veterinaria Scandinavica. 2020; 62 (1): 1-7. https://doi.org/10.1186/s13028-020-00537-z</mixed-citation><mixed-citation xml:lang="en">Pettersson E., Ahola H., Frössling J. et al. Detection and molecular characterisation of Cryptosporidium spp. in Swedish pigs. Acta Veterinaria Scandinavica. 2020; 62 (1): 1-7. https://doi.org/10.1186/s13028-020-00537-z</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Qi M., Zhang Q., Xu C. et al. Prevalence and molecular characterization of Cryptosporidium spp. in pigs in Xinjiang, China. Acta Tropica. 2020; 209. 105551. https://doi.org/10.1016/j.actatropica.2020.105551</mixed-citation><mixed-citation xml:lang="en">Qi M., Zhang Q., Xu C. et al. Prevalence and molecular characterization of Cryptosporidium spp. in pigs in Xinjiang, China. Acta Tropica. 2020; 209. 105551. https://doi.org/10.1016/j.actatropica.2020.105551</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Rahimah A. B., Cheah S. C., Rajinder S. Freezedrying of oil palm (Elaeis guineensis) leaf and its effect on the quality of extractable DNA. J. Oil Palm. Res. 2006; 18. 296-304.</mixed-citation><mixed-citation xml:lang="en">Rahimah A. B., Cheah S. C., Rajinder S. Freezedrying of oil palm (Elaeis guineensis) leaf and its effect on the quality of extractable DNA. J. Oil Palm. Res. 2006; 18. 296-304.</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Striepen B. Parasitic infections: time to tackle cryptosporidiosis. Nature News. 2013; 503 (7475): 189-191. https://doi.org/10.1038/503189a</mixed-citation><mixed-citation xml:lang="en">Striepen B. Parasitic infections: time to tackle cryptosporidiosis. Nature News. 2013; 503 (7475): 189-191. https://doi.org/10.1038/503189a</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Wang P., Li S., Zou Y. et al. The infection and molecular characterization of Cryptosporidium spp. in diarrheic pigs in southern China. Microbial Pathogenesis. 2022; 165. 105459. https://doi.org/10.1016/j.micpath.2022.105459</mixed-citation><mixed-citation xml:lang="en">Wang P., Li S., Zou Y. et al. The infection and molecular characterization of Cryptosporidium spp. in diarrheic pigs in southern China. Microbial Pathogenesis. 2022; 165. 105459. https://doi.org/10.1016/j.micpath.2022.105459</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Wang R., Qiu S., Jian F. et al. Prevalence and molecular identification of Cryptosporidium spp. Parasitol. Res. 2010; 107. 1489-1494. https://doi.org/10.1007/s00436-010-2024-6</mixed-citation><mixed-citation xml:lang="en">Wang R., Qiu S., Jian F. et al. Prevalence and molecular identification of Cryptosporidium spp. Parasitol. Res. 2010; 107. 1489-1494. https://doi.org/10.1007/s00436-010-2024-6</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">Zheng S., Li D., Zhou C. et al. Molecular identification and epidemiological comparison of Cryptosporidium spp. among different pig breeds in Tibet and Henan, China. BMC Vet. Res. 2019; 15 (1): 1-8. https://doi.org/10.1186/s12917-019-1847-3</mixed-citation><mixed-citation xml:lang="en">Zheng S., Li D., Zhou C. et al. Molecular identification and epidemiological comparison of Cryptosporidium spp. among different pig breeds in Tibet and Henan, China. BMC Vet. Res. 2019; 15 (1): 1-8. https://doi.org/10.1186/s12917-019-1847-3</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
