The effectiveness of the use of organic cobalt in the feeding of young cattle

Aim. The study of the regularities of metabolism in the body when feeding various types of trace elements. Materials and Methods. The studies were carried out using generally accepted and modern biotechnological, biochemical and mathematical methods and certified laboratory equipment. All digital material obtained in the course of the research work was processed using the Microsoft Excel software package and the method of variation statistics, taking into account the Student's probability criterion. Results. Studies have found that the use of 1 mg/ kg of cobalt acetic acid compound feed in feeding young bulls aged 3-6 months had a positive effect on the physiological state of animals, expressed in an increase in the content of erythrocytes in the blood by 2.4%, hemoglobin – by 2.1, total protein – by 1.1, calcium and phosphorus – by 1.4 and 1.3%, respectively. At the same time, the glucose level decreased by 1.8%, urea – by 1.9%. it did not have a significant effect on the processes of cicatricial digestion. All indicators were within the limits of physiological norms. The animals of the experimental group showed a tendency to decrease the ammonia content in the scar fluid by 4.1%. At the same time, in the experimental group, the level of volatile fatty acids increased by 3.0%. Feeding the bulls with cobalt acetic acid salt provided an increase in the average daily live weight gain by 3.1%. The increase in productivity had a positive effect on the efficiency of the transformation of nutrients in the diet into products. Thus, feed costs for products decreased by 2.8%. Conclusion. The adding of cobalt acetic acid in the diet of young bulls had a positive effect to decrease the ammonia content in the rumen fluid, increasing the average daily gain and, in general, the productivity of animals.