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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">vetpress</journal-id><journal-title-group><journal-title xml:lang="ru">Аграрная наука</journal-title><trans-title-group xml:lang="en"><trans-title>Agrarian science</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0869-8155</issn><issn pub-type="epub">2686-701X</issn><publisher><publisher-name>Редакция журнала "Аграрная наука"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.32634/0869-8155-2024-385-8-56-60</article-id><article-id custom-type="elpub" pub-id-type="custom">vetpress-3213</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>ВЕТЕРИНАРИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>VETERINARY MEDICINE</subject></subj-group></article-categories><title-group><article-title>Концентрация кисспептина, тестостерона и кортизола в крови коров в транзитный период при нарушениях энергообмена</article-title><trans-title-group xml:lang="en"><trans-title>Concentration of kisspeptin, testosterone and cortisol in the blood of cows during the transit period with energy metabolism disorders</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4698-3917</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ширяев</surname><given-names>Г. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Shiryaev</surname><given-names>G. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Геннадий Владимирович Ширяев, кандидат сельскохозяйственных наук</p><p>Московское шоссе, 55А, Тярлево, Санкт-Петербург, 196625</p></bio><bio xml:lang="en"><p>Gennady Vladimirovich Shiryaev, Candidate of Agricultural Sciences</p><p>55А Moskovskoe Shosse, Tyarlevo village, St. Petersburg, 196625</p></bio><email xlink:type="simple">GS-2027@yandex.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/0000-0003-4574-4639</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ларкина</surname><given-names>Т. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Larkina</surname><given-names>T. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Татьяна Александровна Ларкина, кандидат биологических наук</p><p>Московское шоссе, 55А, Тярлево, Санкт-Петербург, 196625</p></bio><bio xml:lang="en"><p>Tatyana Aleksandrovna Larkina, Candidate of Biological Sciences</p><p>55А Moskovskoe Shosse, Tyarlevo village, St. Petersburg, 196625</p></bio><email xlink:type="simple">tanya.larkina2015@yandex.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/0000-0002-2080-2970</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Никитин</surname><given-names>Г. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Nikitin</surname><given-names>G. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Георгий Сергеевич Никитин, кандидат ветеринарных наук</p><p>ул. Черниговская, 5, Санкт-Петербург, 196084</p></bio><bio xml:lang="en"><p>Georgy Sergeevich Nikitin, Candidate of Veterinary Sciences</p><p>5 Chernigovskaya Str., St. Petersburg, 196084</p></bio><email xlink:type="simple">nikitin.g.s007@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2865-9582</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Притужалова</surname><given-names>А. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Prituzhalova</surname><given-names>A. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Анна Олеговна Притужалова, младший научный сотрудник</p><p>Московское шоссе, 55А, Тярлево, Санкт-Петербург, 196625</p></bio><bio xml:lang="en"><p>Anna Olegovna Prituzhalova, Junior Researcher Assistant</p><p>55А Moskovskoe Shosse, Tyarlevo village, St. Petersburg, 196625</p></bio><email xlink:type="simple">aklevakina14@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>Ширяева</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Shiryaeva</surname><given-names>N. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Наталья Александровна Ширяева, младший научный сотрудник</p><p>Московское шоссе, 55А, Тярлево, Санкт-Петербург, 196625</p></bio><bio xml:lang="en"><p>Natalya Alexandrovna Shiryaeva, Junior Research Assistant</p><p>55А Moskovskoe Shosse, Tyarlevo village, St. Petersburg, 196625</p></bio><email xlink:type="simple">odormidonova@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/0000-0002-8953-7511</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Перинек</surname><given-names>О. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Perinek</surname><given-names>O. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Оксана Юрьевна Перинек, кандидат биологических наук</p><p>Московское шоссе, 55А, Тярлево, Санкт-Петербург, 196625</p></bio><bio xml:lang="en"><p>Oksana Yurievna Perinek, Candidate of Biological Sciences</p><p>55А Moskovskoe Shosse, Tyarlevo village, St. Petersburg, 196625</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4430-4770</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Курочкин</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kurochkin</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Антон Алексеевич Курочкин, младший научный сотрудник</p><p>Московское шоссе, 55А, Тярлево, Санкт-Петербург, 196625</p></bio><bio xml:lang="en"><p>Anton Alekseevich Kurochkin, Junior Research Assistant</p><p>55А Moskovskoe Shosse, Tyarlevo village, St. Petersburg, 196625</p></bio><email xlink:type="simple">kurochkin.anton.66@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Всероссийский научно-исследовательский институт генетики и разведения сельскохозяйственных животных — филиал Федерального исследовательского центра животноводства «ВИЖ им. академика Л.К. Эрнста»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>The All-Russian Scientific Research Institute of Genetics and Breeding of Farm Animals is a branch of the L.K. Ernst Federal Research Center for Animal Husbandry</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Санкт-Петербургский государственный университет ветеринарной медицины</institution><country>Россия</country></aff><aff xml:lang="en"><institution>St. Petersburg State University of Veterinary Medicine</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>22</day><month>08</month><year>2024</year></pub-date><volume>1</volume><issue>8</issue><fpage>56</fpage><lpage>60</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ширяев Г.В., Ларкина Т.А., Никитин Г.С., Притужалова А.О., Ширяева Н.А., Перинек О.Ю., Курочкин А.А., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Ширяев Г.В., Ларкина Т.А., Никитин Г.С., Притужалова А.О., Ширяева Н.А., Перинек О.Ю., Курочкин А.А.</copyright-holder><copyright-holder xml:lang="en">Shiryaev G.V., Larkina T.A., Nikitin G.S., Prituzhalova A.O., Shiryaeva N.A., Perinek O.Y., Kurochkin A.A.</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.vetpress.ru/jour/article/view/3213">https://www.vetpress.ru/jour/article/view/3213</self-uri><abstract><p>У клинически здоровых коров голштинской породы (n = 20) изучен гормональный фон в период глубокой стельности и после отела. С этой целью у коров в сыворотке крови определяли концентрацию кисспептина, тестостерона и кортизола. За животными вели регулярное наблюдение с проведением клинических и акушерско-гинекологических исследований. В зависимости от концентрации глюкозы и бета-гидроксимасляной кислоты на 5-й день после отела коров разделяли на две группы. В первую группу вошли 15 голов с концентрацией глюкозы больше 3 ммоль/л и уровнем бета-гидроксимасляной кислоты ниже 1 ммоль/л. Во второй группе у 5 голов зафиксированы нарушения в энергообмене (уровень глюкозы меньше 3 ммоль/л, бетагидроксимасляной кислоты — выше 1 ммоль/л). На 15-й день после отела была зафиксирована нормализация энергетического гомеостаза. Концентрация кисспептина в предотельный период в обеих группах снижалась к отелу. При этом концентрация кисспептина в крови животных в группе с нарушениями энергообмена была выше на 9-й, 7-й и 5-й день до отела в 2,4–3 раза (р &lt; 0,01–0,05) по сравнению с первой группой. В производственном опыте концентрация всех трех гормонов после отела снизилась с существенными межгрупповыми различиями. Уровень кисспептина был достоверно выше в предотельный период в опытной группе и на 5-й день после отела (p &lt; 0,05). Уровень кортизола держался на высоком уровне до 7-го дня после отела (p &lt; 0,05). Концентрация тестостерона в крови на протяжении всего транзитного периода была достоверно высокой у животных опытной группы.</p></abstract><trans-abstract xml:lang="en"><p>In the clinically healthy cows of the Holstein breed (n = 20), a hormonal background was studied during theperiod of deepness and after the edema. For this purpose, the concentration of kisspeptin, testosterone and cortisol was determined in serum cows in the blood cows. The animals conducted regular observation with the conduct of clinical and obstetric and gynecological studies. Depending on the concentration of glucose and beta-hydroxybutyric acid on the 5th day after calving, the cows were divided into two groups. The first group included 15 heads with a glucose concentration greater than 3 mmol/l and a beta-hydroxybutyric acid level below 1 mmol/l. In the second group, 5 heads had violations in energy exchange (glucose levels less than 3 mmol/l, beta-hydroxybutyric acid above 1 mmol/l). On the 15th day after the hotel, normalization of energy homeostasis was recorded. The concentration of kisspeptin in the preventive period in both groups decreased to the hotel. At the same time, the concentration of kisspeptin in the blood of animals in the group with energy exchange disorders was 2.4–3 times higher on the 9th, 7th and 5th days before calving (p &lt; 0.01–0.05) compared with the first group. In production experience, the concentration of all three hormones after the hotel decreased with significant intergroup differences. The level of kisspeptin was reliably higher in the preventive period in the experimental group and on the 5th day after the hotel (p &lt; 0.05). The cortisole level was held at a high level of up to 7 days after the hotel (p &lt; 0.05). The concentration of testosterone in the blood throughout the transit period was reliably high in the animals of the experimental group.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>кисспептин</kwd><kwd>тестостерон</kwd><kwd>кортизол</kwd><kwd>кетоз</kwd><kwd>кровь</kwd><kwd>молочные коровы</kwd><kwd>отел</kwd></kwd-group><kwd-group xml:lang="en"><kwd>kisspeptin</kwd><kwd>testosterone</kwd><kwd>cortisol</kwd><kwd>ketosis</kwd><kwd>blood</kwd><kwd>dairy cows</kwd><kwd>calving</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена в рамках проекта Российского научного фонда № 21-76-10042.</funding-statement><funding-statement xml:lang="en">The study was funded by scientific research of the Russian Science Foundation Project No. 21-76-10042.</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">Gellrich K., Sigl T., Meyer H.H.D., Wiedemann S. Cortisol levels in skimmed milk during the first 22 weeks of lactation and response to short-term metabolic stress and lameness in dairy cows. Journal of Animal Science and Biotechnology. 2015; 6: 31. https://doi.org/10.1186/s40104-015-0035-y</mixed-citation><mixed-citation xml:lang="en">Gellrich K., Sigl T., Meyer H.H.D., Wiedemann S. Cortisol levels in skimmed milk during the first 22 weeks of lactation and response to short-term metabolic stress and lameness in dairy cows. Journal of Animal Science and Biotechnology. 2015; 6: 31. https://doi.org/10.1186/s40104-015-0035-y</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Лейбова В.Б., Ширяев Г.В. Биохимический профиль коров в ранний период лактации, его особенности у коров с разной степенью сократимости матки и удоем. Генетика и разведение животных. 2018; 2: 87–93. https://doi.org/10.31043/2410-2733-2018-2-87-93</mixed-citation><mixed-citation xml:lang="en">Leibova V.B., Shiryaev G.V. The metabolic status of cows with different level of uterine contractility and milk yield. Genetics and breeding of animals. 2018; 2: 87–93 (in Russian). https://doi.org/10.31043/2410-2733-2018-2-87-93</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Племяшов К.В., Андреев Г.М., Дмитриева Т., Стахеева М. Проблема продуктивных возможностей и производственного долголетия коров в Ленинградской области. Международный вестник ветеринарии. 2008; 3: 6–8. https://elibrary.ru/tktwoz</mixed-citation><mixed-citation xml:lang="en">Plemyashov K.V., Andreev G.M., Dmitrieva T., Stakheeva M. Problem of productive opportunities and industrial longevity of cows in Leningrad region. International Bulletin of Veterinary Medicine. 2008; 3: 6–8 (in Russian). https://elibrary.ru/tktwoz</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Васильева С.В., Карпенко Л.Ю. Динамика половых гормонов у коров в период глубокой стельности и после отела в связи с гипербилирубинемией. Нормативно-правовое регулирование в ветеринарии. 2022; 3: 65–67. https://doi.org/10.52419/issn2782-6252.2022.3.65</mixed-citation><mixed-citation xml:lang="en">Vasilyeva S.V., Karpenko L.Yu. Dynamics of sex hormones in cows in the period of deep pregnancy and after calving in connection with hyperbilirubinemia. Legal regulation in veterinary medicine. 2022; 3: 65–67 (in Russian). https://doi.org/10.52419/issn2782-6252.2022.3.65</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Ohkura S. et al. Physiological role of metastin/kisspeptin in regulating gonadotropinreleasing hormone (GnRH) secretion in female rats. Peptides. 2009; 30(1): 49–56. https://doi.org/10.1016/j.peptides.2008.08.004</mixed-citation><mixed-citation xml:lang="en">Ohkura S. et al. Physiological role of metastin/kisspeptin in regulating gonadotropinreleasing hormone (GnRH) secretion in female rats. Peptides. 2009; 30(1): 49–56. https://doi.org/10.1016/j.peptides.2008.08.004</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Hu K.-L., Zhao H., Chang H.-M., Yu Y., Qiao J. Kisspeptin/Kisspeptin Receptor System in the Ovary. Frontiers in Endocrinology. 2018; 8: 365. https://doi.org/10.3389/fendo.2017.00365</mixed-citation><mixed-citation xml:lang="en">Hu K.-L., Zhao H., Chang H.-M., Yu Y., Qiao J. Kisspeptin/Kisspeptin Receptor System in the Ovary. Frontiers in Endocrinology. 2018; 8: 365. https://doi.org/10.3389/fendo.2017.00365</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Prashar V., Arora T., Singh R., Sharma A., Parkash J. Hypothalamic Kisspeptin Neurons: Integral Elements of the GnRH System. Reproductive Sciences. 2023; 30(3): 802–822. https://doi.org/10.1007/s43032-022-01027-5</mixed-citation><mixed-citation xml:lang="en">Prashar V., Arora T., Singh R., Sharma A., Parkash J. Hypothalamic Kisspeptin Neurons: Integral Elements of the GnRH System. Reproductive Sciences. 2023; 30(3): 802–822. https://doi.org/10.1007/s43032-022-01027-5</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Alves B.R.C. et al. Elevated Body Weight Gain During the Juvenile Period Alters Neuropeptide Y-Gonadotropin-Releasing Hormone Circuitry in Prepubertal Heifers. Biology of Reproduction. 2015; 92(2): 46. https://doi.org/10.1095/biolreprod.114.124636</mixed-citation><mixed-citation xml:lang="en">Alves B.R.C. et al. Elevated Body Weight Gain During the Juvenile Period Alters Neuropeptide Y-Gonadotropin-Releasing Hormone Circuitry in Prepubertal Heifers. Biology of Reproduction. 2015; 92(2): 46. https://doi.org/10.1095/biolreprod.114.124636</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Songphasuk T., Wannapong N., Thanantong N., Sajapitak S. Preliminary Study of Kisspeptin mRNA-expressing Neurons at POA and ARC in Hypothalamus of Beef Cattle. Journal of Mahanakorn Veterinary Medicine. 2021; 16(1): 99–107.</mixed-citation><mixed-citation xml:lang="en">Songphasuk T., Wannapong N., Thanantong N., Sajapitak S. Preliminary Study of Kisspeptin mRNA-expressing Neurons at POA and ARC in Hypothalamus of Beef Cattle. Journal of Mahanakorn Veterinary Medicine. 2021; 16(1): 99–107.</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Ширяев Г.В., Станиславович Т.И., Политов В.П. Кетоз и его роль в нарушении репродуктивной функции Bos Taurus. Вестник Российского университета дружбы народов. Серия: Агрономия и животноводство. 2020; 15(4): 403–416. https://doi.org/10.22363/2312-797X-2020-15-4-403-416</mixed-citation><mixed-citation xml:lang="en">Shiryaev G.V., Stanislavovich T.I., Politov V.P. Ketosis and its role in Bos Taurus reproductive impairment. RUDN Journal of Agronomy and Animal Industries. 2020; 15(4): 403–416 (in Russian). https://doi.org/10.22363/2312-797X-2020-15-4-403-416</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Morrison A.E., Fleming S., Levy M.J. A review of the pathophysiology of functional hypothalamic amenorrhoea in women subject to psychological stress, disordered eating, excessive exercise or a combination of these factors. Clinical Endocrinology. 2021; 95(2): 229–238. https://doi.org/10.1111/cen.14399</mixed-citation><mixed-citation xml:lang="en">Morrison A.E., Fleming S., Levy M.J. A review of the pathophysiology of functional hypothalamic amenorrhoea in women subject to psychological stress, disordered eating, excessive exercise or a combination of these factors. Clinical Endocrinology. 2021; 95(2): 229–238. https://doi.org/10.1111/cen.14399</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Geronikolou S. et al. Kisspeptin and the Genetic Obesity Interactome. Vlamos P. (ed.). GeNeDis 2020: Genetics and Neurodegenerative Diseases. Cham: Springer. 2022; 111–117. https://doi.org/10.1007/978-3-030-78787-5_15</mixed-citation><mixed-citation xml:lang="en">Geronikolou S. et al. Kisspeptin and the Genetic Obesity Interactome. Vlamos P. (ed.). GeNeDis 2020: Genetics and Neurodegenerative Diseases. Cham: Springer. 2022; 111–117. https://doi.org/10.1007/978-3-030-78787-5_15</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Майорова И.В., Борисов Д.А., Балабанов А.Г. Патофизиологические и клинические аспекты кисспептина при нервной анорексии. Авиценна. 2022; 100: 22–26. https://elibrary.ru/vxzcbl</mixed-citation><mixed-citation xml:lang="en">Mayorova I.V., Borisov D.A., Balabanov A.G. Pathophysiological and clinical aspects of kisspeptin in anorexia nervous. Avitsenna. 2022; 100: 22–26 (in Russian). https://elibrary.ru/vxzcbl</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Königsson K., Kask K., Gustafsson H., Kindahl H., Parvizi N. 15-Ketodihydro-PGF2α, Progesterone and Cortisol Profiles in Heifers after Induction of Parturition by Injection of Dexamethasone. Acta Veterinaria Scandinavica. 2001; 42: 151. https://doi.org/10.1186/1751-0147-42-151</mixed-citation><mixed-citation xml:lang="en">Königsson K., Kask K., Gustafsson H., Kindahl H., Parvizi N. 15-KetodihydroPGF2α, Progesterone and Cortisol Profiles in Heifers after Induction of Parturition by Injection of Dexamethasone. Acta Veterinaria Scandinavica. 2001; 42: 151. https://doi.org/10.1186/1751-0147-42-151</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">След А.Н., Дерхо М.А. Оценка дыхательной функции крови и ее взаимосвязь с кортизолом у коров при беременности. Ученые записки Казанской государственной академии ветеринарной медицины им. Н.Э. Баумана. 2020; 241(1): 193–198. https://elibrary.ru/ltqxny</mixed-citation><mixed-citation xml:lang="en">Sled A.N., Dercho M.A. The assessment of the respiratory function of blood and its interaction with cortisol in pregnancy of cows. Scientific notes Kazan Bauman State Academy of Veterinary Medicine.2020; 241(1): 193–198 (in Russian). https://elibrary.ru/ltqxny</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Симонов М.Р., Влизло В.В., Буцяк В.И., Петрух И.М. Гормональный статус молочных коров до- и послеотельного периодов. Ученые записки учреждения образования «Витебская ордена “Знак Почёта” государственная академия ветеринарной медицины». 2017; 53(2): 132–137. https://elibrary.ru/zhuazr</mixed-citation><mixed-citation xml:lang="en">Simonov M.R., Vlyzlo V.V., Butsyak V.I., Petrukh I.M. Hormonal status of dairy cows before and after calving period. Scientific notes of the educational institution «Vitebsk Order “Badge of Honor” State Academy of Veterinary Medicine». 2017; 53(2): 132–137 (in Russian). https://elibrary.ru/zhuazr</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Васильева С.В., Карпенко Л.Ю. Изучение концентрации тироксина и кортизола у коров с жировым гепатозом в транзитный период. Вопросы нормативно-правового регулирования в ветеринарии. 2019; 3: 202–204. https://doi.org/10.17238/issn2072-6023.2019.3.202</mixed-citation><mixed-citation xml:lang="en">Vasilyeva S.V., Karpenko L.Yu. Study of the concentration of thyroxin and cortisol in cows with fat hepatosis in the transit period. Issues of Regulatory regulation in Veterinary Medicine. 2019; 3: 202–204 (in Russian). https://doi.org/10.17238/issn2072-6023.2019.3.202</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Синева А.М., Лукина В.А., Адодина М.И. Дегидроэпиандростерон, тестостерон и 17β-эстрадиол в крови молочных коров при послеродовой гипофункции яичников. Ветеринарный фармакологический вестник. 2019; 4: 77–90. https://doi.org/10.17238/issn2541-8203.2019.4.77</mixed-citation><mixed-citation xml:lang="en">Sineva A.M., Lukina V.A., Adodina M.I. Dehydroepiandrosterone, testosterone and 17β-estradiol in the blood of dairy cows with postpartum ovarian hypofunction. Bulletin of Veterinary pharmacology. 2019; 4: 77–90 (in Russian). https://doi.org/10.17238/issn2541-8203.2019.4.77</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>
