Mathematical modelling of heart rhythm in dairy cattle

Abstract

The article discusses the issues of mathematical modeling and processing of cardiointervalogramms of cows with different vegetative regulation. An analysis of the sinus rhythm with subsequent mathematical processing of statistical parameters is presented. The work examines the variational pulsograms of an experimental group of animals, using correlation rhythmography, analyzes the scattergrams, autocorrelation clouds in cows with different levels of vegetative regulation. Studies of heart rate variability indicators for Jersey breed cows are relevant. This is a unique method that allows one to take into account the breed characteristics of cattle, predict milk productivity and increase the period of economic use. The stress index is an indicator that most fully informs about the degree of tension of the body's compensatory mechanisms, as well as about the level of functioning of the central circuit of the regulation of heart rhythm. Based on the stress index, the initial vegetative tone was calculated.

Socio-economic mechanisms for the development of rural labor potential of Ryazan region

“…The transformation of the socioeconomic state of the regions occurs under the influence of a combination of factorsmacroeconomics, sectoral markets, state support programs, etc. They determine not only the current composition and structure of labor resources, but also their forecast parameters [18].…”

The influence of nanosized iron particles on morphological parameters of blood and reproductive ability of sows in the third trimester of gestation

“…The weight of the nest in the experimental group of sows on the day of farrowing was 4.1 % higher, the large-fruiting rate was 3.1 %, compared to the control animals.In modern conditions of livestock breeding, special attention is paid to increasing the production of meat products to fully meet the needs of the population, that is mainly solved through the production of pork, since pigs are early maturing and multiple animals [1][2][3].Pregnant sows are sensitive to the lack of mineral and vitamin components of the diet, on which depends not only their health, but also the offspring obtained [1,2]. The use of various feed and biologically active additives, which are an additional source of minerals and vitamins, compensates for its lack in the body of animals, improves metabolic processes, increases productivity, has a positive effect on fertility, embryonic development of offspring, and reduces the impact of stress factors [4][5][6].When using biologically active additives, it is possible to correct many biochemical processes and the state of defense mechanisms in the body [7].…”

“…Pregnant sows are sensitive to the lack of mineral and vitamin components of the diet, on which depends not only their health, but also the offspring obtained [1,2]. The use of various feed and biologically active additives, which are an additional source of minerals and vitamins, compensates for its lack in the body of animals, improves metabolic processes, increases productivity, has a positive effect on fertility, embryonic development of offspring, and reduces the impact of stress factors [4][5][6].…”

“…In this regard, they have metabolic disorders and, as a result, develop iron deficiency anemia. The disease is characterized by a disorder of the function of hematopoietic organs, a violation of metabolic processes, and this affects the growth retardation of young animals and a decrease in resistance [1,4,6].…”