<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE article PUBLIC "-//NLM//DTD JATS (Z39.96) Journal Publishing DTD v1.3 20210610//EN" "JATS-journalpublishing1-3.dtd">
<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="en"><front><journal-meta><journal-id journal-id-type="publisher-id">foodsyst</journal-id><journal-title-group><journal-title xml:lang="en">Food systems</journal-title><trans-title-group xml:lang="ru"><trans-title>Пищевые системы</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2618-9771</issn><issn pub-type="epub">2618-7272</issn><publisher><publisher-name>Федеральный научный центр пищевых систем им. В.М. Горбатова РАН</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21323/2618-9771-2019-2-4-34-37</article-id><article-id custom-type="elpub" pub-id-type="custom">foodsyst-56</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>Статьи</subject></subj-group></article-categories><title-group><article-title>STUDY OF FATTY ACID COMPOSITION OF MILK FOR CHEESE PRODUCTION</article-title><trans-title-group xml:lang="ru"><trans-title>STUDY OF FATTY ACID COMPOSITION OF MILK FOR CHEESE PRODUCTION</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>Topnikova</surname><given-names>E. V.</given-names></name><name name-style="western" xml:lang="en"><surname>Topnikova</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Elena V. Topnikova — doctor of technical sciences, director</p><p>152613, Yaroslavl Region, Uglich, Krasnoarmeysky Boulevard, 19</p></bio><bio xml:lang="en"><p>Elena V. Topnikova — doctor of technical sciences, director</p><p>152613, Yaroslavl Region, Uglich, Krasnoarmeysky Boulevard, 19</p></bio><email xlink:type="simple">topnikova.l@yandex.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>Mordvinova</surname><given-names>V. A.</given-names></name><name name-style="western" xml:lang="en"><surname>Mordvinova</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Valentina A. Mordvinova — candidate of technical sciences, head of research department of cheesemaking technology and serum processing</p><p>152613, Yaroslavl Region, Uglich, Krasnoarmeysky Boulevard, 19</p></bio><bio xml:lang="en"><p>Valentina A. Mordvinova — candidate of technical sciences, head of research department of cheesemaking technology and serum processing</p><p>152613, Yaroslavl Region, Uglich, Krasnoarmeysky Boulevard, 19</p></bio><email xlink:type="simple">valentina-mordvinova@yandex.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>Sviridenko</surname><given-names>G. M.</given-names></name><name name-style="western" xml:lang="en"><surname>Sviridenko</surname><given-names>G. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Galina M. Sviridenko — doctor of technical sciences, chief research scientist, head of microbiological research department of milk and dairy products</p><p>152613, Yaroslavl Region, Uglich, Krasnoarmeysky Boulevard, 19</p></bio><bio xml:lang="en"><p>Galina M. Sviridenko — doctor of technical sciences, chief research scientist, head of microbiological research department of milk and dairy products</p><p>152613, Yaroslavl Region, Uglich, Krasnoarmeysky Boulevard, 19</p></bio><email xlink:type="simple">sg_microbiology@mail.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>Danilova</surname><given-names>E. S.</given-names></name><name name-style="western" xml:lang="en"><surname>Danilova</surname><given-names>E. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ekaterina N. Danilova — junior researcher of research department in butter technology</p><p>152613, Yaroslavl Region, Uglich, Krasnoarmeysky Boulevard, 19</p></bio><bio xml:lang="en"><p>Ekaterina N. Danilova — junior researcher of research department in butter technology</p><p>152613, Yaroslavl Region, Uglich, Krasnoarmeysky Boulevard, 19</p></bio><email xlink:type="simple">danilovaes-vniims@rambler.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>All-Russian Scientific Research Institute of Butter- and Cheesemaking — Branch of V. M. Gorbatov Federal Research Center for Food Systems of RAS</institution><country>Россия</country></aff><aff xml:lang="en"><institution>All-Russian Scientific Research Institute of Butter- and Cheesemaking — Branch of V. M. Gorbatov Federal Research Center for Food Systems of RAS</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>20</day><month>12</month><year>2019</year></pub-date><volume>2</volume><issue>4</issue><fpage>34</fpage><lpage>37</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Topnikova E.V., Mordvinova V.A., Sviridenko G.M., Danilova E.S., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Topnikova E.V., Mordvinova V.A., Sviridenko G.M., Danilova E.S.</copyright-holder><copyright-holder xml:lang="en">Topnikova E.V., Mordvinova V.A., Sviridenko G.M., Danilova E.S.</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://www.fsjour.com/jour/article/view/56">https://www.fsjour.com/jour/article/view/56</self-uri><abstract><p>The article shows that the studied samples of raw milk in terms of composition (mass fraction of fat, protein, lactose and milk solids-not-fat) met the criteria of suitability for cheese, and its physic-chemical properties (titratable acidity, density, freezing point) were within acceptable limits. Moreover, rennet sample corresponded to the first and second classes. It was proved that the number of spores of lactating fermenting microorganisms met the requirements for milk for the production of any kind of cheese. It was established that the fatty acid composition of raw cow’s milk used to produce cheeses at various enterprises varied significantly. The data indicate the variability of the content of all groups of fatty acids — low molecular weight, saturated, monounsaturated and polyunsaturated. As a result of gas chromatography studies using the chromatographic complex «Chromos GX-1000» with a flame ionization detector and a CP 88 quartz capillary column — Sil 88 for FAME100 m × 0.25 mm × 0.2 µm, it was found that the largest absolute fluctuations were for saturated (± 7.03 % of the average value) and monounsaturated fatty acids (± 3.77 % of the average value). Absolute fluctuations in the group of low molecular weight fatty acids amounted to ± 2.62 %, and in the group of polyunsaturated — ± 1.02 % of the average value. The calculation of the relative deviation showed that the most varied groups were the ones of low molecular weight fatty acids (± 28.40 rel.%) and polyunsaturated fatty acids (± 25.11 rel.%). At the same time, a relatively high content of certain fatty acids: myristoleic, palmitic, palmitoleic and low levels of stearic and oleic fatty acids, was revealed in individual milk samples.</p></abstract><trans-abstract xml:lang="ru"><p>The article shows that the studied samples of raw milk in terms of composition (mass fraction of fat, protein, lactose and milk solids-not-fat) met the criteria of suitability for cheese, and its physic-chemical properties (titratable acidity, density, freezing point) were within acceptable limits. Moreover, rennet sample corresponded to the first and second classes. It was proved that the number of spores of lactating fermenting microorganisms met the requirements for milk for the production of any kind of cheese. It was established that the fatty acid composition of raw cow’s milk used to produce cheeses at various enterprises varied significantly. The data indicate the variability of the content of all groups of fatty acids — low molecular weight, saturated, monounsaturated and polyunsaturated. As a result of gas chromatography studies using the chromatographic complex «Chromos GX-1000» with a flame ionization detector and a CP 88 quartz capillary column — Sil 88 for FAME100 m × 0.25 mm × 0.2 µm, it was found that the largest absolute fluctuations were for saturated (± 7.03 % of the average value) and monounsaturated fatty acids (± 3.77 % of the average value). Absolute fluctuations in the group of low molecular weight fatty acids amounted to ± 2.62 %, and in the group of polyunsaturated — ± 1.02 % of the average value. The calculation of the relative deviation showed that the most varied groups were the ones of low molecular weight fatty acids (± 28.40 rel.%) and polyunsaturated fatty acids (± 25.11 rel.%). At the same time, a relatively high content of certain fatty acids: myristoleic, palmitic, palmitoleic and low levels of stearic and oleic fatty acids, was revealed in individual milk samples.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>milk</kwd><kwd>cheese</kwd><kwd>milk suitability for cheese</kwd><kwd>fat phase of milk</kwd><kwd>fatty acid composition</kwd></kwd-group><kwd-group xml:lang="en"><kwd>milk</kwd><kwd>cheese</kwd><kwd>milk suitability for cheese</kwd><kwd>fat phase of milk</kwd><kwd>fatty acid composition</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">Sviridenko, G.M. (2009). Microbiological risks in the production of milk and dairy Moscow: Russian Academy of Agricultural Sciences. — 246 p. ISBN: 978–5–85941–338–6 (in Russian)</mixed-citation><mixed-citation xml:lang="en">Sviridenko, G.M. (2009). Microbiological risks in the production of milk and dairy Moscow: Russian Academy of Agricultural Sciences. — 246 p. ISBN: 978–5–85941–338–6 (in Russian)</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Myagkonosov, D.S., Mordvinova, V.A., Abramov, D.V., Delitskaya, I.N. (2014). Special features of proteolysis in different groups of cheese types. Cheesemaking and buttermaking, 2, 24–27. (in Russian)</mixed-citation><mixed-citation xml:lang="en">Myagkonosov, D.S., Mordvinova, V.A., Abramov, D.V., Delitskaya, I.N. (2014). Special features of proteolysis in different groups of cheese types. Cheesemaking and buttermaking, 2, 24–27. (in Russian)</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Ignat’eva, N.L. (2019). Protein content and structure in milk of cowsdaughters of bulls of domestic and import selection. All-Russian scientific-practical conference «Advanced achievements of science in the dairy industry». Vologda: GMKHA, 216–221. (in Russian)</mixed-citation><mixed-citation xml:lang="en">Ignat’eva, N.L. (2019). Protein content and structure in milk of cowsdaughters of bulls of domestic and import selection. All-Russian scientific-practical conference «Advanced achievements of science in the dairy industry». Vologda: GMKHA, 216–221. (in Russian)</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Borovitskiy, M.V. (2012). Study of the influence of the breed of cows on the composition and properties of milk and cheese production. Author’s abstract of the dissertation for the scientific degree of Candidate of Technical Sciences. Kemerovo: КеmТIPP. — 16 p. (in Russian)</mixed-citation><mixed-citation xml:lang="en">Borovitskiy, M.V. (2012). Study of the influence of the breed of cows on the composition and properties of milk and cheese production. Author’s abstract of the dissertation for the scientific degree of Candidate of Technical Sciences. Kemerovo: КеmТIPP. — 16 p. (in Russian)</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Bigaeva A. V. (2019). Comparative analysis of cow milk technological properties with different genes of ϰ-casein. XIII International Scientific and Practical Conference of Young Scientists and Specialists of Organizations in the Field of Agricultural Sciences «Advanced research and new approaches to the production and processing of agricultural raw materials and food products.» Uglich: VNIIMS, 52–57. ISBN978–5–6043305–1–7 (in Russian)</mixed-citation><mixed-citation xml:lang="en">Bigaeva A. V. (2019). Comparative analysis of cow milk technological properties with different genes of ϰ-casein. XIII International Scientific and Practical Conference of Young Scientists and Specialists of Organizations in the Field of Agricultural Sciences «Advanced research and new approaches to the production and processing of agricultural raw materials and food products.» Uglich: VNIIMS, 52–57. ISBN978–5–6043305–1–7 (in Russian)</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Tyulkin S.V. (2018). The effect of cows genotype on their productivity and Milk quality. Food systems, 1(3), 38–43. DOI: 10.21323/2618-9771-2018-1-3-38-43 (in Russian)</mixed-citation><mixed-citation xml:lang="en">Tyulkin S.V. (2018). The effect of cows genotype on their productivity and Milk quality. Food systems, 1(3), 38–43. DOI: 10.21323/2618-9771-2018-1-3-38-43 (in Russian)</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Kukhtyn, M.D., Pokotylo, O.S., Karpyk, G.V., Kravchenyik, K.J., Shynkaruk, O.J. (2015). Сhanges in the content of free fatty acids composition of the milk under the influence of psychotropic microorganisms. Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies. Series: Veterinary Sciences, 17(1–4 (61), 50–55. (in Ukrainian)</mixed-citation><mixed-citation xml:lang="en">Kukhtyn, M.D., Pokotylo, O.S., Karpyk, G.V., Kravchenyik, K.J., Shynkaruk, O.J. (2015). Сhanges in the content of free fatty acids composition of the milk under the influence of psychotropic microorganisms. Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies. Series: Veterinary Sciences, 17(1–4 (61), 50–55. (in Ukrainian)</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Lopez, Ch., Maillard, M.-B., Briard-Bion, B., Camier, B., Hannon, J. A. (2006). Lipolysis during Ripening of Emmental Cheese Considering Organization of Fat and Preferential Localization of Bacteria. Journal of Agricultural and Food Chemistry, 54 (16), 5855–5867. DOI: 10.1021/jf060214l</mixed-citation><mixed-citation xml:lang="en">Lopez, Ch., Maillard, M.-B., Briard-Bion, B., Camier, B., Hannon, J. A. (2006). Lipolysis during Ripening of Emmental Cheese Considering Organization of Fat and Preferential Localization of Bacteria. Journal of Agricultural and Food Chemistry, 54 (16), 5855–5867. DOI: 10.1021/jf060214l</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Appalonova, I.V., Smirnova, E.A., Nikonorova, N.P. (2012). Study of fatty acid composition of milk lipids. Food industry, 11, 72–75. (in Russian)</mixed-citation><mixed-citation xml:lang="en">Appalonova, I.V., Smirnova, E.A., Nikonorova, N.P. (2012). Study of fatty acid composition of milk lipids. Food industry, 11, 72–75. (in Russian)</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Samoylov, A.V., Kolpakov, E. Yu., Suraeva, N.M., Petrov, A.N., Volodarskaya, T.K., Goreva, T.A (2017). Seasonal variations in fatty acids composition of cow’s milk. Bulletin of KrasGAU, 9, 35–40. (in Russian)</mixed-citation><mixed-citation xml:lang="en">Samoylov, A.V., Kolpakov, E. Yu., Suraeva, N.M., Petrov, A.N., Volodarskaya, T.K., Goreva, T.A (2017). Seasonal variations in fatty acids composition of cow’s milk. Bulletin of KrasGAU, 9, 35–40. (in Russian)</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Abilleira, E., Collomb, M., Schlichtherle-Cerny, H., Virto, M, De Renobales, M., Barron, L.J.R. (2009). Winter/spring changes in fatty acid composition of farmhouse Idiazabal cheese due to different flock management systems. Journal of Agricultural and Food Chemistry, 57(11), 4746–4753. DOI: 10.1021/jf900460u</mixed-citation><mixed-citation xml:lang="en">Abilleira, E., Collomb, M., Schlichtherle-Cerny, H., Virto, M, De Renobales, M., Barron, L.J.R. (2009). Winter/spring changes in fatty acid composition of farmhouse Idiazabal cheese due to different flock management systems. Journal of Agricultural and Food Chemistry, 57(11), 4746–4753. DOI: 10.1021/jf900460u</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Heck, J.M.L., Van Valenberg, H.J.F., Dijkstra, J., van Hooijdonk, A.C.M. (2009). Seasonal variation-in the Dutch bovine raw milk composition. Journal of Dairy Science, 92(10), 4745–4755. DOI: 10.3168/jds.2009–2146</mixed-citation><mixed-citation xml:lang="en">Heck, J.M.L., Van Valenberg, H.J.F., Dijkstra, J., van Hooijdonk, A.C.M. (2009). Seasonal variation-in the Dutch bovine raw milk composition. Journal of Dairy Science, 92(10), 4745–4755. DOI: 10.3168/jds.2009–2146</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Larsen, M.K., Nielsen, J.H., Butler, G., Leifert, C., Slots, T., Kristiansen, G.H., Gustafsson, A.H. (2010). Milk quality as affected by feeding regimens in a country with climatic variation. Journal of Dairy Science, 93(7), 2863–2873. DOI: 10.3168/jds.2009–2953</mixed-citation><mixed-citation xml:lang="en">Larsen, M.K., Nielsen, J.H., Butler, G., Leifert, C., Slots, T., Kristiansen, G.H., Gustafsson, A.H. (2010). Milk quality as affected by feeding regimens in a country with climatic variation. Journal of Dairy Science, 93(7), 2863–2873. DOI: 10.3168/jds.2009–2953</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Soyeurt, H., Dardenne, P., Gillon, A., Croquet, C., Vanderick, S., Mayeres, P., Bertozzi, C., Gengler, N. (2006). Variation in fatty acid contents of milk and milk fat within and across breeds. Journal of Dairy Science, 89(12), 4858–4865. DOI: 10.3168/jds.S0022–0302(06)72534–6</mixed-citation><mixed-citation xml:lang="en">Soyeurt, H., Dardenne, P., Gillon, A., Croquet, C., Vanderick, S., Mayeres, P., Bertozzi, C., Gengler, N. (2006). Variation in fatty acid contents of milk and milk fat within and across breeds. Journal of Dairy Science, 89(12), 4858–4865. DOI: 10.3168/jds.S0022–0302(06)72534–6</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">DePeters, E.J., German, J.B., Taylor, S.J., Essex, S.T., Perez-Monti, H. (2001). Fatty acid and triglyceride composition of milk fat from lactating Holstein cows in response to supplemental canola oil. Journal of Dairy Science, 84(4), 929–936. DOI: 10.3168/jds.S0022–0302(01)74550-X</mixed-citation><mixed-citation xml:lang="en">DePeters, E.J., German, J.B., Taylor, S.J., Essex, S.T., Perez-Monti, H. (2001). Fatty acid and triglyceride composition of milk fat from lactating Holstein cows in response to supplemental canola oil. Journal of Dairy Science, 84(4), 929–936. DOI: 10.3168/jds.S0022–0302(01)74550-X</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Khastayeva, A.Z., Smagulov, А.К., Zhamurova, V.S., Topnikova, E.V., Umirzakov, B.U., Nurgalieva, M.T. (2019). Technological properties of milk from the cows of black-motley and alatau breeds in various seasons of lactation. International Journal of Innovative Technology and Exploring Engineering, 8(8), 2299–2303</mixed-citation><mixed-citation xml:lang="en">Khastayeva, A.Z., Smagulov, А.К., Zhamurova, V.S., Topnikova, E.V., Umirzakov, B.U., Nurgalieva, M.T. (2019). Technological properties of milk from the cows of black-motley and alatau breeds in various seasons of lactation. International Journal of Innovative Technology and Exploring Engineering, 8(8), 2299–2303</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Chouinard, P.Y., Girard, V., Brisson, G.J. (1998). Fatty Acid Profile and Physical Properties of Milk Fat from Cows fed Calcium Salts of Fatty Acids with Varying Unsaturation. Journal of Dairy Science, 81(2), 471–481. DOI: 10.3168/jds.S0022–0302(98)75599–7</mixed-citation><mixed-citation xml:lang="en">Chouinard, P.Y., Girard, V., Brisson, G.J. (1998). Fatty Acid Profile and Physical Properties of Milk Fat from Cows fed Calcium Salts of Fatty Acids with Varying Unsaturation. Journal of Dairy Science, 81(2), 471–481. DOI: 10.3168/jds.S0022–0302(98)75599–7</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Collomb, M., Sollberger, H., Bütikofer, U., Sieber, R., Stoll, W., Schaeren, W. (2004). Impact of a basal diet of hay and fodder beet supplemented with rapeseed, linseed and sunflowerseed on the fatty acid composition of milk fat. International Dairy Journal, 14(6), 549–559. DOI: 10.1016/j.idairyj.2003.11.004</mixed-citation><mixed-citation xml:lang="en">Collomb, M., Sollberger, H., Bütikofer, U., Sieber, R., Stoll, W., Schaeren, W. (2004). Impact of a basal diet of hay and fodder beet supplemented with rapeseed, linseed and sunflowerseed on the fatty acid composition of milk fat. International Dairy Journal, 14(6), 549–559. DOI: 10.1016/j.idairyj.2003.11.004</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Postavneva, E.V. (2010). Chemical composition of milk of Black-andWhite cows of various genotypes. Zootechniya, 1, 30–31. (in Russian)</mixed-citation><mixed-citation xml:lang="en">Postavneva, E.V. (2010). Chemical composition of milk of Black-andWhite cows of various genotypes. Zootechniya, 1, 30–31. (in Russian)</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">Kharitonov, E.L., Panyushkin D. E. (2016). Feed and metabolic factors of the milk fatty acid composition in cows. Problems of Biology producing animals, 2, 76–106. (in Russian)</mixed-citation><mixed-citation xml:lang="en">Kharitonov, E.L., Panyushkin D. E. (2016). Feed and metabolic factors of the milk fatty acid composition in cows. Problems of Biology producing animals, 2, 76–106. (in Russian)</mixed-citation></citation-alternatives></ref><ref id="cit21"><label>21</label><citation-alternatives><mixed-citation xml:lang="ru">Buryakov, N.P. (2009). Feeding high producing dairy cattle. Мoscow: Prospect. — 416 p. ISBN: 978–5–98597–148–4 (in Russian)</mixed-citation><mixed-citation xml:lang="en">Buryakov, N.P. (2009). Feeding high producing dairy cattle. Мoscow: Prospect. — 416 p. ISBN: 978–5–98597–148–4 (in Russian)</mixed-citation></citation-alternatives></ref><ref id="cit22"><label>22</label><citation-alternatives><mixed-citation xml:lang="ru">Kasatkin, I.A., Serkova, A.N. (2019). Energy supplement for highly productive cows. All-Russian scientific-practical conference «Advanced achievements of science in the dairy industry.» Vologda: GMKHA, 271–221. (in Russian)</mixed-citation><mixed-citation xml:lang="en">Kasatkin, I.A., Serkova, A.N. (2019). Energy supplement for highly productive cows. All-Russian scientific-practical conference «Advanced achievements of science in the dairy industry.» Vologda: GMKHA, 271–221. (in Russian)</mixed-citation></citation-alternatives></ref><ref id="cit23"><label>23</label><citation-alternatives><mixed-citation xml:lang="ru">Yurin, D.A., Yurina, N.A., Esaulenko, N.N. (2017). Effective approaches to feeding highly productive cows. Effective Livestock, 1(131), 16–18. (in Russian)</mixed-citation><mixed-citation xml:lang="en">Yurin, D.A., Yurina, N.A., Esaulenko, N.N. (2017). Effective approaches to feeding highly productive cows. Effective Livestock, 1(131), 16–18. (in Russian)</mixed-citation></citation-alternatives></ref><ref id="cit24"><label>24</label><citation-alternatives><mixed-citation xml:lang="ru">Gusarov, I.V., Fomenko, P.A., Bogatyrev, E.V. (2019). Bulk feed in the diet of dairy cows in the Vologda region. Cheesemaking and buttermaking, 5, 54–56. (in Russian)</mixed-citation><mixed-citation xml:lang="en">Gusarov, I.V., Fomenko, P.A., Bogatyrev, E.V. (2019). Bulk feed in the diet of dairy cows in the Vologda region. Cheesemaking and buttermaking, 5, 54–56. (in Russian)</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>
