The effect of proteolytic enzymes on the degree of absorption of nutrients in the body of bull calves
https://doi.org/10.32634/0869-8155-2025-397-08-39-44
Abstract
Enzyme supplements are widely used in the feeding of farm animals all over the world. Feeding with enzyme catalysts is often accompanied by an increase in feed intake due to the fact that the palatability of the diet increases due to the sugars released during the hydrolysis of feed fiber. After the enzymes enter the stomach, the rate of digestion increases due to the hydrolytic activity in the rumen, which reduces intestinal filling and increases digestibility.
The aim of the study was to study the features of the absorption of nutrients in the diet of bull calves when the protease enzyme is included in the diet.
The objects of research are Kazakh white-headed bulls an average weight of 320–330 kg at the age of 14–15 months (number of 8 heads). Supplementing the diet of Kazakh whiteheaded bull calves with a mushroom protease exoenzyme at a dosage of 50 g/head had a positive effect on the metabolic mechanisms in the bull calves. As a result, an increase in the digestibility of nutrients in the diets of the experimental group was recorded. The digestibility of trace elements increased: Li by 2.0%, B by 0.4%, Se by 1.9%, Br by 2.7%, I by 24.6%, Zn by 1.0%; assimilation worsened: Mn by 19.2%, Co by 29.8%, Ni by 0.8%, Cu by 2.8%, Mo by 4.8 %, Cr by 6.8%, Fe by 1.5%. Toxic trace elements (Sr, Sn, Al, Cd, Hg, Pb) were better removed from the animal body under the influence of fungal protease.
Supporting agencies: The research was carried out at the expense of the grant of the Russian Science Foundation No. 23-16-00061.
About the Authors
E. V. Sheida
Federal Scientific Center of Biological Systems and Agro-technologies of the Russian Academy of Sciences;
Orenburg State University
Russian Federation
Russian Federation
Elena Vladimirovna Sheida, Doctor of Biological Sciences, Leading Researcher at the S.G. Leushin Department of Farm Animal Feeding and Feed Technology; Doctor of Biological Sciences, Senior Researcher
29 9th January Str., Orenburg, 460000;
13 Pobedy Ave., Orenburg, 460018
O. V. Kvan
Federal Scientific Center of Biological Systems and Agro-technologies of the Russian Academy of Sciences;
Orenburg State University
Russian Federation
Russian Federation
Olga Vilorievna Kvan, Candidate of Biological Sciences, Senior Researcher, Head. Department of Farm Animal Feeding and Feed Technology named after S.G. Leushin; Candidate of Biological Sciences, Senior Researcher, Acting Head of the Feeding Department
29 9th January Str., Orenburg, 460000;
13 Pobedy Ave., Orenburg, 460018
O. V. Shoshina
Federal Scientific Center of Biological Systems and Agro-technologies of the Russian Academy of Sciences
Russian Federation
Russian Federation
Oksana Vyacheslavovna Shoshina, Candidate of Biological Sciences, Junior Researcher at the S.G. Leushin Department of Farm Animal Feeding and Feed Technology
29 9th January Str., Orenburg, 460000
Yu. A. Sechnev
Federal Scientific Center of Biological Systems and Agro-technologies of the Russian Academy of Sciences
Russian Federation
Russian Federation
Yuri Andreevich Sechnev, Postgraduate Student of the Department of Farm Animal Feeding and Feed Technology named after S.G. Leushin
29 9th January Str., Orenburg, 460000
L. Yu. Topuria
Orenburg State Agrarian University
Russian Federation
Russian Federation
Larisa Yurievna Topuria, Doctor of Biological Sciences, Professor of the Department of Veterinary and Sanitary Expertise and Pharmacology
18 Chelyuskintsev Str., Orenburg, 460014
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Review
For citations:
Sheida E.V., Kvan O.V., Shoshina O.V., Sechnev Yu.A., Topuria L.Yu. The effect of proteolytic enzymes on the degree of absorption of nutrients in the body of bull calves. Agrarian science. 2025;(8):39-44. (In Russ.) https://doi.org/10.32634/0869-8155-2025-397-08-39-44
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