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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">zootech</journal-id><journal-title-group><journal-title xml:lang="ru">Зоотехническая наука Беларуси</journal-title><trans-title-group xml:lang="en"><trans-title>Zootechnical Science of Belarus</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0134-9732</issn><publisher><publisher-name>Научно-практический центр Национальной академии наук Беларуси по животноводству</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">zootech-1424</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>ТЕХНОЛОГИЯ КОРМОВ И КОРМЛЕНИЯ, ПРОДУКТИВНОСТЬ</subject></subj-group></article-categories><title-group><article-title>ВЛИЯНИЕ СОДЕРЖАНИЯ СЕЛЕНА В РАЦИОНЕ НА АНТИОКСИДАНТНЫЙ СТАТУС КОРОВ</article-title><trans-title-group xml:lang="en"><trans-title>Effect of dietary selenium on antioxidant status of cows</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>Голова</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Golova</surname><given-names>N. V.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</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>Билаш</surname><given-names>Ю. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Bilash</surname><given-names>Y. P.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дидовыч</surname><given-names>А. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Didovych</surname><given-names>A. P.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Вудмаска</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Vudmaska</surname><given-names>I. V.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт биологии животных Национальной академии аграрных наук Украины</institution></aff><aff xml:lang="en"><institution>Institute of Animal Biology of National Academy of Agrarian Sciences of Ukraine</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт биологии животных Национальной академии аграрных наук Украины; Львовский национальный университет ветеринарной медицины и биотехнологий им. С.З. Гжицкого</institution></aff><aff xml:lang="en"><institution>Institute of Animal Biology of the National Academy of Agrarian Sciences of Ukraine; Lviv National University of Veterinary Medicine and Biotechnology named S.Z. Gzhitsky</institution></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Львовский национальный университет ветеринарной медицины и биотехнологий им. С.З. Гжицкого</institution></aff><aff xml:lang="en"><institution>Lviv National University of Veterinary Medicine and Biotechnology named S.Z. Gzhitsky</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2010</year></pub-date><pub-date pub-type="epub"><day>12</day><month>08</month><year>2022</year></pub-date><volume>45</volume><issue>2</issue><fpage>44</fpage><lpage>49</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Голова Н.В., Билаш Ю.П., Дидовыч А.П., Вудмаска И.В., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Голова Н.В., Билаш Ю.П., Дидовыч А.П., Вудмаска И.В.</copyright-holder><copyright-holder xml:lang="en">Golova N.V., Bilash Y.P., Didovych A.P., Vudmaska I.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://zootech.belal.by/jour/article/view/1424">https://zootech.belal.by/jour/article/view/1424</self-uri><abstract><p>Исследовали влияние добавки к селенодефицитному рациону коров (0,1 мг/кг СВ корма) селенита натрия или селен-метионина в количестве 0,2 или 0,5 мг/кг сухого вещества рациона (в пересчете на элементарный селен) на содержание продуктов перекисного окисления липидов и активность антиоксидантных ферментов в крови. Селен-метионин в большей мере снижал концентрацию малонового диальдегида, диеновых конъюгатов и гидроперекисей липидов в плазме крови, его действие более выражено при дозе 0,5 мг/кг. Активность селенозависимого фермента глутатионпероксидазы в плазме крови при этом возрастала, причем селен-метионин действовал эффективнее. В эритроцитах селен повышал активность глутатионпероксидазы независимо от химической формы и количества.Добавка к рациону коров селенита натрия в количестве 0,2 мг/кг не влияла на удой, а в количестве 0,5 мг/кг снижала его на 8 %. При этом селенит натрия уменьшал содержание белка в молоке на 0,4-0,5 %. Селен-метионин, скармливаемый коровам в дозе 0,2 мг/кг, повышал удой на 5 %, а жирность молока - на 0,31 %. При добавлении к рациону селен-метионина в дозе 0,5 мг/кг к сухого вещества корма показатели молочной продуктивности коров не отличались от показателей контрольной группы.Таким образом, концентрацию продуктов перекисного окисления в плазме крови коров эффективнее снижает введение в рацион селен-метионина в количестве 0,5 мг/кг корма в пересчете на элементарный селен, тогда как 0,2 мг/кг корма положительно влияет на молочную продуктивность.</p></abstract><trans-abstract xml:lang="en"><p>Influence of supplementation of cows diet with 0,2 or 0,5 ppm (as elementary selenium) of sodium selenite and selenium methionine on blood antioxidant status are presented. Dose depended increasing of glutathione peroxidase activity in the cows blood has been found thus selenium methionine affected more effectively. Glutathione peroxidase activity in erythrocytes were increased independently selenium chemical form and quantity. Both doses of sodium selenite have decreased concentrations of thiobarbituric acid reactive substances in blood plasma at approximately equal levels. Effect of 0,5 ppm selenium methionine supplementation was more expressed. Supplementation of cows diet with 0,2 ppm of sodium selenite didn't change the milk yields but increasing of dose to 0.5 ppm has lowered the milk yields for 8 %. Both doses of sodium selenite decreased protein content in the milk. Addition to diet the 0,2 ppm of selenium methionine increased milk yields for 5 % and milk fat content - for 0,31 %. When the selenium methionine dose has risen to 0,5 ppm the cows milk yields and milk protein and fat contents have stayed at the control group cows level. So the effective decreasing element of peroxidation products concentration in blood plasma is selenium-methionine in the amount of 0.5 mg/kg, when 0.2 mg/kg has a positive effect on milk productivity.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>коровы</kwd><kwd>кров</kwd><kwd>молоко</kwd><kwd>селенит натрия</kwd><kwd>селен-метионин</kwd><kwd>антиоксидантный статус</kwd></kwd-group><kwd-group xml:lang="en"><kwd>cows</kwd><kwd>blood</kwd><kwd>milk</kwd><kwd>sodium selenite</kwd><kwd>selenium methionine antioxidant status</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">Ivancic, J. Effect of dietary sulfur and selenium concentrations on selenium balance of lactating Holstein cows / J. Ivancic, W. P. Weiss // J. Dairy Sci. - 2001. - Vol. 84. - Р. 225-232.</mixed-citation><mixed-citation xml:lang="en">Ivancic, J. 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