vetpressАграрная наукаAgrarian science0869-81552686-701XРедакция журнала "Аграрная наука"10.32634/0869-8155-2026-407-06-87-94vetpress-4217Research ArticleЗООТЕХНИЯZOOTECHNICSГормональный и биохимический статус организма ремонтных телок при скармливании хрома в органической формеHormonal and biochemical status of the body of repair heifers when feeding chromium in organichttps://orcid.org/0000-0002-4617-1644НовгородоваИ. П.NovgorodovaI. P.

Инна Петровна Новгородова, кандидат биологических наук, старший научный сотрудник

п. Дубровицы д. 60, г.о. Подольск, Московская область, 142132

Inna Petrovna Novgorodova, Candidate of Biological Sciences, Senior Researcher 

60 Dubrovitsy settlement, Podolsk, Moscow region, 142132

novg-inna2005@yandex.ruhttps://orcid.org/0000-0003-1889-6063ЧабаевМ. Г.ChabaevM. G.

Магомед Газиевич Чабаев, доктор сельскохозяйственных наук, профессор,главный научный сотрудник

п. Дубровицы д. 60, г.о. Подольск, Московская область, 142132

Magomed Gazievich Chabaev, Doctor of Agricultural Sciences, Professor, Chief Researcher 

60 Dubrovitsy settlement, Podolsk, Moscow region, 142132

chabaev.m.g-1@mail.ruhttps://orcid.org/0000-0003-4242-2239НекрасовР. В.NekrasovR. V.

Роман Владимирович Некрасов, доктор сельскохозяйственных. наук, профессор, директор

пос. Институт, Боровск, Калужская обл., 249010

Roman Vladimirovich Nekrasov, Doctor of Agricultural Sciences, Professor, Director

Institute, Borovsk, Kaluga Region, 249010

nek_roman@mail.ruhttps://orcid.org/0000-0002-0520-7022БоголюбоваН. В.BogolyubovaN. V.

Надежда Владимировна Боголюбова, доктор биол. наук, главный научный сотрудник

п. Дубровицы д. 60, г.о. Подольск, Московская область, 142132

Nadezhda Vladimirovna Bogolyubova, doctor of biological sciences, leading researcher

60 Dubrovitsy settlement, Podolsk, Moscow region, 142132

652202@mail.ruФедеральный исследовательский центр животноводства — ВИЖ имени академика Л.К. Эрнста»РоссияL.K. Ernst Federal Research Center for Animal HusbandryRussian FederationВсероссийский научно-исследовательский институт физиологии, биохимии и питания животных — филиал ФНЦ им. Л.К. ЭрнстаРоссияAll-Russia Research Institute of Animal Physiology, Biochemistry, and Nutrition — Branch of the L.K. Ernst Federal Research Center for Animal HusbandryRussian Federation202604072026068794Copyright © Новгородова И.П., Чабаев М.Г., Некрасов Р.В., Боголюбова Н.В., 20262026Новгородова И.П., Чабаев М.Г., Некрасов Р.В., Боголюбова Н.В.Novgorodova I.P., Chabaev M.G., Nekrasov R.V., Bogolyubova N.V.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/4217

Разработка норм кормления крупного рогатого скота с учетом важнейших элементов питания, к которым относится микроэлемент хром, весьма востребована. Цель исследований заключалась в изучении гормонального статуса и биохимических показателей крови ремонтных телок при скармливании пропионата хрома в разном количестве и выявлении корреляционных связей между исследуемыми показателями. Работа была проведена на ремонтных телках (15 голов) черно-пестрой голштинизированной породы в возрасте от 6 до 9 месяцев в ОАО «Предприятие «Емельяновка» (АО ОСП АГРО) с. Емельяновка, Московской области. Телки были разделены на 3 группы: I группа — контроль (основной рацион, n = 5), II группа — опытная (основной рацион + 3,75 мг/гол. в сутки пропионата хрома, n = 5) и III группа — опытная (основной рацион + 2,81 мг/гол в сутки пропионата хрома, n = 5) из расчета 0,02 мг/кг живой массы. В конце опыта продолжительностью 90 дней были отобраны образцы крови животных и проведено исследование их гормонального статуса по трийдтиронину (Т3 ), тироксину (Т4 ), тиреотропному гормону (ТТГ) и кортизолу, а также отдельным биохимическим показателям. Скармливание хрома ремонтным телкам дополнительно к основному рациону позволило выявить выраженные отличия между исследуемыми группами по содержанию кортизола, при сравнении контрольной группы сo II группой на 56,0% (р  <  0,05) и с III группой — на 9,5%. Незначительные отличия были отмечены между II и III группами по концентрации тироксина и трийодтиронину, 21,70 пмоль/л и 19,64 пмоль/л; 10,39 пмоль/л и 9,64 пмоль/л, соответственно. В ходе исследований были выявлены высокие положительные корреляционные связи во II и в III опытных группах между глюкозой и кортизолом (r = 0,890; p  <  0,05 и r  =  0,931; p  <  0,05) и между глюкозой и Т3 (r = 0,890; p < 0,05 и r  =  0,915; p  < 0,05).

The development of feeding standards for cattle, taking into account the most important elements of nutrition, which include the trace element chromium, is in demand. The purpose of the studies was to study the hormonal status and biochemical parameters of the blood of repair heifers when feeding different amounts of chromium propionate and to identify correlations between the studied parameters. The work was carried out on repair heifers (15 heads) of black-and-white Holstein breed aged from 6 to 9 months at JSC Enterprise Yemelyanovka (JSC OSP AGRO) in the village of Yemelyanovka, Moscow region. Heifers were divided into 3 groups: group I — control (basic diet, n = 5), group II — experimental (basic diet + 3.75 mg/head per day of chromium propionate, n = 5) and group III — experimental (basic diet + 2.81 mg/head per day of chromium propionate, n = 5) at 0.02 mg/kg bw. At the end of the 90-day experiment, animal blood samples were taken and their hormonal status was studied for triidothyronine (T3 ), thyroxine (T4 ), thyroid-stimulating hormone (TSH) and cortisol, as well as individual biochemical parameters. Feeding chromium to repair heifers in addition to the main diet revealed pronounced differences between the studied groups in terms of cortisol content, when comparing the control group with group II by 56.0 (p < 0.05) and with group III by 9.5%. Minor differences were noted between groups II and III in thyroxine and triiodothyronine concentrations, 21.70 pmol/l and 19.64 pmol/L; 10.39 pmol/l and 9.64 pmol/L, respectively. The studies revealed high positive correlations in the II and III experimental groups between glucose and cortisol (r = 0.890; p < 0.05 and r = 0.931; p < 0.05) and between glucose and T3(r = 0.890; p < 0.05 and r = 0.915; p < 0.05).

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