Abstract
One of the approaches to creating biologically active additives for use in pig breeding can be the use of 20-hydroxyecdysone regulating protein metabolism in piglets. The purpose of the work is to assess the effect of 20-hydroxyecdysone on turnover of protein in piglets. The experiment was carried out on barrows (♂ Danish Yorkshire × ♀ Danish landrace) to achieve a live weight of 53-62 kg. At the age of 60 days, 2 groups of piglets were formed: control and experimental. Piglets of the experimental group were injected with 20-hydroxyecdysone at a dose of 1.6 mg / kg body weight. In piglets of the experimental group, in comparison with the control, a decrease in the excretion of nitrogen in the urine was noted (by 26.8%, P <0.05). Nitrogen deposition was higher in piglets of the experimental group by 19.0% (P <0.001) compared with the control. 20-hydroxyecdysone contributed to increased protein deposition in the body of piglets due to protein synthesizing activity. Thus, the use of 20-hydroxyecdysone in pigs increases the efficiency of using amino acids for the synthesis and deposition of proteins in the body.
Highlights
The processes of protein metabolism in the body of growing animals largely depend on nutritional conditions, content, intensity of their cultivation and other factors
The limited knowledge of the mechanisms of regulation of the synthesis and deposition of proteins in the body hinders the development of methods, tools and technologies that contribute to the maximum manifestation of the genetic potential of pig meat productivity, including the production of high-quality pork with a certain ratio of fat and protein in meat [1, 2, 3, 4]
Of great importance is the use of additives of biologically active substances, including phytobiotics, which allow to obtain high average daily gains in live weight, increase the efficiency of feed bioconversion per unit of production and meat quality [5]
Summary
The processes of protein metabolism in the body of growing animals largely depend on nutritional conditions, content, intensity of their cultivation and other factors. Of particular interest are studies on the characteristics of protein metabolism in the body of intensively growing animals in connection with the different supply of amino acids and biologically active substances. Optimization of nutritional conditions adequate to the physiological needs of pigs contributes to a more complete realization of the productive potential with minimal feed costs per unit of production. Of great importance is the use of additives of biologically active substances, including phytobiotics, which allow to obtain high average daily gains in live weight, increase the efficiency of feed bioconversion per unit of production and meat quality [5]
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