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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">10.31016/1998-8435-2019-13-4-11-16</article-id><article-id custom-type="elpub" pub-id-type="custom">vniigis-520</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>ЭПИЗООТОЛОГИЯ, ЭПИДЕМИОЛОГИЯ И МОНИТОРИНГ ПАРАЗИТАРНЫХ БОЛЕЗНЕЙ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>EPIZOOTOLOGY, EPIDEMIOLOGY AND MONITORING OF PARASITIC DISEASES</subject></subj-group></article-categories><title-group><article-title>Изучение распространения и факторов риска желудочно-кишечных нематодозов у отдельных стад крупного рогатого скота</article-title><trans-title-group xml:lang="en"><trans-title>Field Study on Prevalence and Risk Factors for Gastrointestinal Nematodes in Selected Herds of Cattle</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Балицка-Рамиш</surname><given-names>А.</given-names></name><name name-style="western" xml:lang="en"><surname>Balicka-Ramisz</surname><given-names>A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кафедра биотехнологии репродукции животных и гигиены окружающей среды</p><p>г. Щецин</p></bio><bio xml:lang="en"><p>Department of Biotechnology of Animal Reproduction and Environment Hygiene</p><p>Szczecin</p></bio><email xlink:type="simple">abalicka52@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Рамиш</surname><given-names>А.</given-names></name><name name-style="western" xml:lang="en"><surname>Ramisz</surname><given-names>A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>г. Щецин</p></bio><bio xml:lang="en"><p>Szczecin</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лауранс</surname><given-names>Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Laurans</surname><given-names>Ł.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Клиника инфекционных заболеваний, гепатологии и трансплантации печени</p><p>ул. Aрконска, 4, 71-455, г. Щецин</p></bio><bio xml:lang="en"><p>Clinic of Infectious Diseases, Hepatology and Liver Transplantation</p><p>str. Arkońska 4, 71-455 Szczecin</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пиотровский</surname><given-names>М.</given-names></name><name name-style="western" xml:lang="en"><surname>Piotrowski</surname><given-names>M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>г. Щецин</p></bio><bio xml:lang="en"><p>Szczecin</p></bio><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Западно-Поморский технический университет<country>Польша</country></aff><aff xml:lang="en">West Pomerania University of Technology<country>Poland</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">Поморский медицинский университет<country>Польша</country></aff><aff xml:lang="en">Pomeranian Medical University<country>Poland</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru">Западно-Поморский технологический университет<country>Польша</country></aff><aff xml:lang="en">West Pomerania University of Technology<country>Poland</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>23</day><month>12</month><year>2019</year></pub-date><volume>13</volume><issue>4</issue><fpage>11</fpage><lpage>16</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Балицка-Рамиш А., Рамиш А., Лауранс Л., Пиотровский М., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Балицка-Рамиш А., Рамиш А., Лауранс Л., Пиотровский М.</copyright-holder><copyright-holder xml:lang="en">Balicka-Ramisz A., Ramisz A., Laurans Ł., Piotrowski M.</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/520">https://vniigis.elpub.ru/jour/article/view/520</self-uri><abstract><sec><title>Цель исследований</title><p>Цель исследований: изучение зараженности крупного рогатого скота желудочно-кишечными нематодами в зависимости от направления продуктивности и сезона года.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Исследования проводили в 2014–2017 гг. в двух стадах мясного крупного рогатого скота (54 гол. выпасающихся и 53 гол. без выпаса) и двух стадах молочного скота из трех ферм (187 гол. выпасающихся), расположенных на северо-западе Польши. Животные не были дегельминтизированы. Пробы фекалий исследовали с января по декабрь количественным методом МакМастера.</p></sec><sec><title>Результаты и обсуждение</title><p>Результаты и обсуждение. Установлена высокая зараженность крупного рогатого скота смешанной инвазией, вызванной желудочно-кишечными нематодами. Наибольшая интенсивность заражения была выявлена в апреле, мае и июне. Экстенсивность инвазии варьировала от 58,31 до 92,53% в зависимости от типа фермы. Низкая зараженность отмечена в зимние месяцы: декабре–феврале. Мясной скот был инвазирован желудочно-кишечными нематодами в большей степени, что, вероятно, связано с тем, что мясной скот выпасают чаще. Увеличение числа яиц в фекалиях наблюдали одновременно с увеличением экстенсивности инвазии в весенние месяцы. В этот период в 1 г фекалий находили 359–468 яиц нематод. В летние месяцы отмечали небольшое уменьшение числа яиц в фекалиях – 416–325 яиц в 1 г фекалий. Повторное снижение числа яиц в фекалиях регистрировали в августе. После этого периода выделение яиц нематод уменьшалось. Температура и атмосферные осадки оказывают огромное влияние на распространение желудочно-кишечных нематодозов. Поэтому изучение динамики заражения эндопаразитами в годовом цикле имеет важный практический аспект при выборе сроков дегельминтизации.</p></sec></abstract><trans-abstract xml:lang="en"><p>The purpose of the research is study of the effect of productivity direction and season on cattle contamination with gastrointestinal nematodes.</p><sec><title>Materials and methods</title><p>Materials and methods. Analyzing the criterion of animal husbandry system, two herds of meat cattle of blonde d'aquitaine meat breeds (54 individuals - grazing) of the Limousine breed (53 specimens – rearing without pasture) and two flocks of Holstein- Friesian dairy cattle from three farms (187 – with access to pastures) individuals located in north-western Poland. The research was carried out in 2014–2017. The animals were not dewormed. Attempts for parasitological examinations were collected from January to December from the handpiece or from the bedding immediately after defecation. The study was based on a quantitative method using the McMaster technique, which allowed the number of eggs to be determined in 1 g of feces.</p></sec><sec><title>Results and discussion</title><p>Results and discussion. A high percentage of cattle infection with a mixed infection of GIN was found. The greatest intensity of infection was demonstrated in April, May and June. In these months, the average degree of worming ranged from 58.31 to 92.53 % depending on the type of farm. The lowest level of infection was in winter months: December, January, February. Comparison of the prevalence of invasive endoparasites in dairy and beef cattle showed a higher extensiveness of infection in beef cattle. The increase in the number of eggs was observed along with the increase in the extensiveness of infection in the spring months. During this period, the EPG coefficient ranged from 359–468 eggs/gram. In summer months there was a slight decrease in the number of eggs in the faeces oscillated around 416–325 eggs/gram. Repeated egg expulsion was observed in August. After this period the excretion of eggs decreased. Microclimate factors, especially temperature and atmospheric precipitation, have a huge impact on the spread of helminthosis. Therefore, learning the exact dynamics of infection with endoparasites in an annual cycle has an important practical aspect in the selection of deworming dates.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>крупный рогатый скот</kwd><kwd>желудочно-кишечные нематоды</kwd><kwd>зараженность</kwd><kwd>распространение</kwd></kwd-group><kwd-group xml:lang="en"><kwd>cattle</kwd><kwd>gastrointestinal nematodes</kwd><kwd>naturally infection</kwd><kwd>prevalence</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">Ravine N., Bareille A., Lehebel A., Ponnau C., Chartier A., Chauvin A. Change in milk production after treatment against gastrointestinal nematodes according to grazing history, parasitological and production-based indicators in adult dairy cows. Vet. 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