vetpressАграрная наукаAgrarian science0869-81552686-701XРедакция журнала "Аграрная наука"10.32634/0869-8155-2026-402-01-68-76vetpress-3970Research ArticleЗООТЕХНИЯZOOTECHNICSТестостерон в волосах как прогностический маркер мясной продуктивности бычковTestosterone in the hair as a prognostic marker of beef productivity of bullshttps://orcid.org/0000-0003-4525-2554ФроловА. Н.FrolovA. N.

Алексей Николаевич Фролов, доктор биологических наук, заведующий отделом технологии мясного скотоводства и производства говядины 

ул. 9 Января, 29, Оренбург, 460000

Alexey Nikolaevich Frolov, Doctor of Biological Sciences, Head of the Department  of Technology of Beef Cattle Breeding and Beef  Production

29 9th January Str., Orenburg, 460000

forleh@mail.ruhttps://orcid.org/0000-0003-2033-3956ЗавьяловО. А.ZavyalovO. A.

Олег Александрович Завьялов, доктор биологических наук, ведущий научный сотрудник 

ул. 9 Января, 29, Оренбург, 460000

Oleg Alexandrovich Zavyalov, Doctor of Biological Sciences, Leading Researcher 

29 9th January Str., Orenburg, 460000

oleg-zavyalov83@mail.ruhttps://orcid.org/0000-0001-6588-3316ГалиеваЗ. А.GalievaZ. A.

Зульфия Асхатовна Галиева, кандидат сельскохозяйственных наук, доцент 

ул. 9 Января, 29, Оренбург, 460000

ул. 50-летия Октября, 34, Уфа, 450001

Zulfiya Askhatovna Galieva, Candidate of Agricultural Sciences, Associate Professor 

29 9th January Str., Orenburg, 460000

34 50-letiya Oktyabrya Str., Ufa, 450001

zulfia2704@mail.ruhttps://orcid.org/0000-0002-8636-7553АлдыяровТ. Б.AldyarovT. B.

Тимур Бажикенович Алдыяров, кандидат сельскохозяйственных наук, научный сотрудник

ул. 9 Января, 29, Оренбург, 460000

Timur Bazhikenovich Aldyarov, Candidate of Agricultural Sciences, Researcher 

29 9th January Str., Orenburg, 460000

aldyyarov97@mail.ruhttps://orcid.org/0000-0002-9424-4254МедетовЕ. С.MedetovE. S.

Ерлан Сагитович Медетов, кандидат сельскохозяйственных наук, научный сотрудник

ул. 9 Января, 29, Оренбург, 460000

Erlan Sagitovich Medetov, Candidate of Agricultural Sciences, Researcher 

29 9th January Str., Orenburg, 460000

erlanmedetov29@mail.ruФедеральный научный центр биологических систем и агротехнологий Российской академии наукРоссияFederal Scientific Center for Biological Systems and Agrotechnologies of the Russian Academy of SciencesRussian FederationФедеральный научный центр биологических систем и агротехнологий Российской академии наук; Башкирский государственный аграрный университетРоссияFederal Scientific Center for Biological Systems and Agrotechnologies of the Russian Academy of Sciences; Bashkir State Agrarian UniversityRussian Federation202626012026116876Copyright © Фролов А.Н., Завьялов О.А., Галиева З.А., Алдыяров Т.Б., Медетов Е.С., 20262026Фролов А.Н., Завьялов О.А., Галиева З.А., Алдыяров Т.Б., Медетов Е.С.Frolov A.N., Zavyalov O.A., Galieva Z.A., Aldyarov T.B., Medetov E.S.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.vetpress.ru/jour/article/view/3970

Цель данного исследования — оценка влияния уровня тестостерона в волосах с холки на продуктивные качества и мясную продуктивность бычков герефордской породы (n = 60).

По уровню гормона животные были разделены на три группы: с низким, средним и высоким содержанием тестостерона. Концентрацию тестостерона измеряли методом ИФА после экстракции гормона из волос. Оценивали приросты живой массы, показатели убоя, морфологический и химический состав туш. Статистический анализ проводили с использованием t-критерия Стьюдента.

Результаты показали выраженную положительную зависимость между уровнем тестостерона и интенсивностью роста. Бычки с высоким уровнем гормона достоверно превосходили животных с низким уровнем по абсолютному (на 23,1%) и среднесуточному (на 23,1%) приросту живой массы, массе туши (на 10,2%) и массе мякоти (на 11,1%). При этом наблюдалось значительное снижение отложения внутреннего жира (на 0,4%) и увеличение содержания протеина (на 1,1%) в длиннейшей мышце. Таким образом, определение тестостерона в волосах является надежным инструментом для прогнозирования мясной продуктивности и может быть использовано в селекционно-племенной работе для отбора животных с оптимальным гормональным статусом.

The purpose of this study was to evaluate the effect of testosterone levels in withers hair on the productive qualities and meat productivity of Hereford bulls (n = 60).

According to hormone levels, the animals were divided into three groups: low, medium and high testosterone. Testosterone concentration was measured by ELISA after hormone extraction from hair. The weight gain, slaughter parameters, and morphological and chemical composition of the carcasses were evaluated. Statistical analysis was performed using the Student’s t-test.

The results showed a pronounced positive relationship between testosterone levels and growth rate. Bulls with high hormone levels significantly outperformed animals with low levels in terms of absolute (by 23.1%) and average daily (by 23.1%) weight gain, carcass weight (by 10.2%) and pulp weight (by 11.1%). At the same time, there was a significant decrease in internal fat deposition (by 0.4%) and an increase in protein content (by 1.1%) in the longest muscle. Thus, the determination of testosterone in hair is a reliable tool for predicting meat productivity and can be used in breeding work to select animals with optimal hormonal status.

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The authors declare that there are no conflicts of interest present.