Silin DA, Lebedev SV.

Animal Husbandry and Fodder Production. 2026. Vol. 109. No. 1. Р. 184-196.

doi: 10.33284/2658-3135-109-1-184

Original article

The effect of the probiotic-mineral complex on the zootechnical indicators in different periods of productivity of laying hens

 

Dmitriy A Silin1, Svyatoslav V Lebedev2

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

1dasilin@mail.ru, https://orcid.org/0000-0001-6438-139X

 2lsv74@list.ru, https://orcid.org/0000-0001-9485-7010

 

Abstract. The use of chelated forms of microelements in combination with a probiotic is one of the solutions to the problems in egg production related to the availability of micro- and macronutrients. In this study, we proposed a combined use of the probiotic Lactobifadol-Forte at a dosage of 1.5, 1, and 0.5 g/kg of feed with a complex of chelated micronutrients Cu, Fe, Mn, Se, and Zn (probiotic-mineral complex – PMC) and a pure complex of microelements (experimental groups) based on the assessment of zootechnical indicators, morphological, and chemical composition of eggs from laying hens of the Hisex-Brown cross. During the experimental period from 17 to 26 weeks of age, egg production in the experimental groups increased to 9,8% compared with the control group. At a dosage of 1,5 g/kg of probiotic and trace elements, feed conversion increased by 12.4% based on 10 eggs, while egg weight increased by 6.5% (P≤0.05), the percentage of egg white and yolk by 1.13% (P≤0.05). The shell thickness was higher than in the control by 3.91-6.14% (P≤0.05), and the Haugh units at probiotic dosages of 1.5 and 1 g/kg with trace elements by 4.98% and 7.91%. In the group with pure complex of trace elements, there was an increase in the number of eggs by 9.8%, feed conversion by 16.1%, while reducing the quality of eggs – shape, white and yolk indices by 0.3-0.7%, Haugh units by 4.4% against the background of a lower egg weight, which was on 2.1% lower than the control. Therefore, the optimal results in terms of the totality of indicators were characterized by the experimental groups, in which the probiotic Lactobifadol Forte was administered in a dosage of 1.5 g /kg and 1 g/kg together with chelated forms of trace elements.

Keywords: laying hens, egg production, productivity, feed conversion, egg quality, Haugh units, probiotic, chelated minerals, chemical composition of eggs

Acknowledgments: the work was supported in accordance to the plan of research works for 2024-2026 FSBRI FRC BST RAS (No. FNWZ-2024-0003).

For citation: Silin DA, Lebedev SV. The effect of the probiotic-mineral complex on the zootechnical indicators in different periods of productivity of laying hens. Animal Husbandry and Fodder Production. 2026;109(1):184-196. (In Russ.). https://doi.org/10.33284/2658-3135-109-1-184

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Information about the authors:

Dmitriy A Silin, Junior Researcher of the Laboratory of Precision Technologies in Agriculture, Federal Research Centre of Biological Systems and Agrotechnologies of the Russian Academy of Sciences, 29, 9 Yanvarya St., Orenburg, 460000, tel.: 89534575189.

Svyatoslav V Lebedev, Dr. Sci. (Biology), Corresponding Member of the Russian Academy of Sciences, Leading Researcher of the Laboratory of Biological Tests and Examinations, Federal Research Centre of Biological Systems and Agrotechnologies of the Russian Academy of Sciences, 29, 9 Yanvarya St., Orenburg, 460000, tel.: 89123458738.

The article was submitted 02.02.2026; approved after reviewing 02.03.2026; accepted for publication 16.03.2026.

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