Zavyalov OA, Medetov ES, Amirshoev FS, Gulukin AМ.

Animal Husbandry and Fodder Production. 2025. Vol. 108. No 3. Р. 8-20.

doi:10.33284/2658-3135-108-3-8

 

Original article

Testing technology for improving the productive qualities of cattle by assessing and correcting the elemental status

 

Oleg A Zavyalov1, Erlan S Medetov2, Faisulo S Amirshoev3, Alexey M Gulukin4

1,2Federal Research Centre оf Biological Systems and Agrotechnologies of the Russian Academy of Sciences, Orenburg, Russia

3Tajik Academy of Agricultural Sciences, Dushanbe, Republic of Tajikistan

4Federal Research Center–All-Russian Research Institute of Experimental Veterinary Medicine named after K.I. Scriabin and Y.R. Kovalenko of the Russian Academy of Sciences, Moscow, Russia

1oleg-zavyalov83@mail.ru, https://orcid.org/0000-0003-2033-3956

2erlanmedetov29@mail.ru, https://orcid.org/0000-0002-9424-4254

3afaizullo64@mail.ru, https://orcid.org/0000-0002-8009-8057

4admin@viev.ru, https//orcid.org/0000-0003-2160-4770

 

Abstract. The study was performed on 15-month Angus bulls with the identified deficiency of Zn and Se in blood serum. The bulls were divided into three groups: control and two experimental. In addition to the basic diet, animals from group I were given additional sources of Zn and Se in the form of Plexomin Se 2000 supplements at a dosage of 2 g/head/day and Plexomin Zn 26 at a dosage of 1.5 g/head/day. Animals of group II received the same supplements in similar dosages, but in combination with the amino acid methionine (Met) at a dosage of 25 g/head/day. The duration of the experiment was 90 days. The bulls were slaughtered at the age of 18 months. It was found that at the end of the experiment, the elemental composition of blood serum of bulls in group I was characterized by a reliable increase in the levels of Zn, Se and a decrease in the levels of Mn, Cu, Fe. Animals that received the Zn+Se+Met complex, on the contrary, had an increased concentration of these elements, which was accompanied by a decrease in the level of malondialdehyde in blood serum. Bulls in the experimental groups had a general tendency to increase a number of blood parameters directly related to the implementation of the productive potential (total protein, albumin, urea, uric acid). Bulls in the experimental groups I and II were characterized by a significant increase in testosterone and somatotropin levels, which was noted against the background of a significant decrease in the concentration of the stress hormone - cortisol. In terms of average daily gains, bulls in experimental groups I and II exceeded their peers from the control group by 5.9 and 8.4%. Bulls in the control group were inferior to animals of the experimental groups in pre-slaughter live weight, hot and chilled carcass weight, pulp and bone weight in carcasses, the maximum difference was in animals receiving the Zn+Se+Met complex. Correction of the elemental status in bulls with identified deficiency of Se and Zn in blood serum is economically beneficial and allows increasing the profitability of beef production by up to 2.53%.

Keywords: beef cattle, elemental status, hormonal status, selenium (Se), zinc (Zn), methionine (Met), meat productivity, economic efficiency

Acknowledgments: the   work   was  supported  by  the  Russian  Science  Foundation,  Project No. 23-26-00045.

For citation: Zavyalov OA, Medetov ES, Amirshoev FS, Gulukin AМ. Testing technology for improving the productive qualities of cattle by assessing and correcting the elemental status. Animal Husbandry and Fodder Production. 2025;108(3):8-20. (In Russ.). https://doi.org/10.33284/2658-3135-108-3-8

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Информация об авторах:

Information about the authors:

Oleg A Zavyalov, Dr Sci. (Biology), Leading Researcher, Department of Technology of Beef Cattle Breeding and Beef Production, Federal Research Centre of Biological Systems and Agrotechnologies of the Russian Academy of Sciences, 29 9 Yanvarya St., Orenburg, 460000, tel.: 8(3532)30-81-78.

Erlan S Medetov, Cand. Sci. (Agriculture), Junior Researcher, Federal Research Centre of Biological Systems and Agrotechnologies of the Russian Academy of Sciences, 29 9 Yanvarya St., Orenburg, 460000, tel.: 8(3532)30-81-78.

Faisulo S Amirshoev, Dr Sci. (Biology), Professor, Corresponding Member of the Tajik Academy of Agricultural Sciences, Vice-President of the Tajik Academy of Agricultural Sciences, 21 “A”, Rudaki Avenue, Republic of Tajikistan, Dushanbe, 734025, tel.: 810992372310607.

Alexey M Gulyukin, Dr. Sci (Veterinary), Corresponding Member of Russian Academy of Sciences, Leading Researcher, Laboratory of Epizootology, Federal Research Center–All-Russian Research Institute of Experimental Veterinary Medicine named after K.I. Scriabin and Y.R. Kovalenko of the Russian Academy of Sciences, Moscow, 24, Ryazanskiy prospect, build. 1, Moscow, 109428.

The article was submitted 02.12.2024; approved after reviewing 06.06.2025; accepted for publication 15.09.2025.

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