Siberian Journal of Life Sciences and AgricultureSiberian Journal of Life Sciences and AgricultureSiberian Journal of Life Sciences and Agriculture2658-66492658-6657Science and Innovation Center Publishing House44264310.12731/2658-6649-2026-18-1-1432GLOWAJФизиология человека и животныхHuman and Animal PhysiologyResearch ArticleThe influence of adrenaline level on meat productivity and meat quality of Aberdeen Angus bulls based on its determination in hairВлияние уровня адреналина на мясную продуктивность и качество мяса бычков абердин-ангусской породы при определении его содержания в волосеhttps://orcid.org/0000-0003-4525-255456714917700H-7679-20178129-5450ФроловАлексей НиколаевичFrolovAleksey N.
Россия

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

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

forleh@mail.ruhttps://orcid.org/0000-0003-2033-395656823498900N-4454-20146946-7296ЗавьяловОлег АлександровичZavyalovOleg A.
Россия

доктор биологических наук, ведущий научный сотрудник отдела технологии мясного скотоводства и производства говядины

Doctor of Biological Sciences, Leading Researcher of the Department of Beef Cattle Breeding and Beef Production Technology

oleg-zavyalov83@mail.ruhttps://orcid.org/0000-0001-6588-33165315-9065ГалиеваЗульфия АсхатовнаGalievaZulfiya A.
Россия

кандидат сельскохозяйственных наук, научный сотрудник отдела технологии мясного скотоводства и производства говядины; доцент

Candidate of Agricultural Sciences, Researcher of the Department of Beef Cattle Breeding and Beef Production Technology; Associate Professor

zulfia2704@mail.ruФедеральное государственное бюджетное научное учреждение «Федеральный научный центр биологических систем и агротехнологий Российской академии наук»Federal Research Centre of Biological Systems and Agrotechnologies of the Russian Academy of SciencesFederal State Budgetary Education Institution of Higher Education “Bashkir State Agrarian University”ФГБОУ ВО «Башкирский государственный аграрный университет»ru280220262026181608230072026Copyright ©; 2026, Frolov A.N., Zavyalov O.A., Galieva Z.A.Copyright ©; 2026, Фролов А.Н., Завьялов О.А., Галиева З.А.2026Frolov A.N., Zavyalov O.A., Galieva Z.A.Фролов А.Н., Завьялов О.А., Галиева З.А.https://creativecommons.org/licenses/by-nc-nd/4.0https://journals.rcsi.science/2658-6649/article/view/442643

Background. The intensification of modern animal husbandry inevitably leads to increased stress load on animals, which negatively affects their productivity and product quality. Existing methods for assessing stress status using biological fluids (blood, saliva) have a significant drawback - they reflect only short-term hormonal fluctuations. In this regard, the search for reliable integral indicators of chronic stress becomes particularly relevant, among which the determination of adrenaline concentration in hair appears promising.

Purpose. To study the effect of adrenaline levels assessed in hair on meat productivity, meat quality and mineral metabolism in Aberdeen Angus bulls.

Materials and methods. The study was performed on 50 Aberdeen Angus bulls. Adrenaline concentration was determined by enzyme immunoassay in hair samples collected from the animals’ withers. Based on the data obtained, three experimental groups were formed by the percentile method: I - with low (1.24-1.55 ng/ml), II - with moderate (1.58-2.69 ng/ml) and III - with high (2.76-3.14 ng/ml) hormone levels. After control slaughter, a comprehensive assessment of slaughter indicators, morphological composition of carcasses, chemical analysis and determination of the mineral profile of the longissimus dorsi muscle was performed. Statistical data processing was performed using the Statistica 10.0 software package.

Results. It was found that elevated adrenaline levels were associated with a decrease in hot carcass weight by 5.8% and slaughter weight by 6.0%. With deterioration of beef quality characteristics: intramuscular fat content decreased by 18%, energy value by 11%, calcium concentration by 22%, potassium by 31%, zinc by 18%, selenium by 28%.

Adrenaline concentration in hair can serve as a representative biomarker of chronic stress that significantly affects productivity and meat quality characteristics.

Обоснование. Интенсификация современного животноводства неизбежно приводит к усилению стрессовой нагрузки на организм животных, что негативно сказывается на их продуктивности и качестве продукции. Существующие методы оценки стрессового состояния по биологическим жидкостям (кровь, слюна) обладают существенным недостатком - они отражают лишь кратковременные гормональные колебания. В этой связи особую актуальность приобретает поиск надежных интегральных показателей хронического стресса, среди которых перспективным представляется определение концентрации адреналина в волосе.

Цель. Изучить влияние уровня адреналина оцененного по волосу на мясную продуктивность, качество мяса и минеральный обмен у бычков абердин-ангусской породы.

Материалы и методы. Исследование выполнено на 50 бычках абердин-ангусской породы. Концентрацию адреналина определяли методом иммуноферментного анализа в образцах волос, отобранных с холки животных. На основании полученных данных процентильным методом сформированы три экспериментальные группы: I - с низким (1,24-1,55 нг/мл), II - с умеренным (1,58-2,69 нг/мл) и III - с высоким (2,76-3,14 нг/мл) уровнем гормона. После проведения контрольного убоя выполнена комплексная оценка убойных показателей, морфологического состава туш, химического анализа и определение минерального профиля длиннейшей мышцы спины. Статистическая обработка данных проведена с использованием пакета программ Statistica 10.0.

Результаты. Установлено, что повышенный уровень адреналина ассоциирован со снижением массы парной туши на 5,8%, убойной массы - на 6,0%. При ухудшении качественных характеристик говядины: содержание внутримышечного жира снижалось на 18%, энергетическая ценность - на 11%, концентрация кальция - на 22%, калия - на 31%, цинка - на 18%, селена - на 28%.

Концентрация адреналина в волосе может служить репрезентативным биомаркером хронического стресса, оказывающего существенное влияние на продуктивность и качественные характеристики мяса.

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