scholarly journals Particularities of Initial Selection of Primary School Age Sambo Wrestlers Based on the Study of Psychomotor Abilities

2021 ◽  
Vol 6 (1) ◽  
pp. 345-351
Author(s):  
I. Baraliuc ◽  
◽  
V. Manolachi ◽  
A. Polevaia-Secareanu ◽  
A. Cotorcea
Keyword(s):  
Study Groups ◽  
The Body ◽  
Experimental Methodology ◽  
Psychomotor Development ◽  
Control Group ◽  
Fourth Period ◽  
Sport Training ◽  
The Third ◽  
Experimental Group ◽  
Selection Of

The purpose of the study was to identify the particularities of psychomotor abilities in 8-9 years old sambo athletes in the process of initial sport selection. Material and methods. The research presents an algorithm of the leading factors of the step-by-step selection of 165 8-9-year-old pupils for sambo wrestling. The first stage of selection was a thorough checkup, which determined that more than 50 % of the total number of pupils had disturbance of morphology and functionality of different body systems, there remained 68 examinees. At the third stage of selection the identification of intellectual abilities showed that only 73.53 % of pupils out of 68 (i.e. 50 pupils) had an average level of attention stability. According to the appreciation of psychomotor abilities of pupils we identified a decrease on the examinees number with 20 % out of 50 pupils. At the special stage of selection 17.5 % of 8-9 years old pupils, in 70 % of cases (i.e. for the majority of tests) failed to execute the requirements for motor abilities and coordination capacity. The basic experiment was elaborated and realized on the basis of an yearlong pedagogical experiment for which we organized two experimental study groups of sambo wrestlers in their first year of sport training: control group, that included 15 pupils that did not undergo any special selection, and the experimental group, consisting of 15 8-9 years old pupils that were specially selected. We created identical conditions for the learning and training process throughout a year for both groups. However, only in the experimental group we included the experimental methodology of sport diagnostics that contained a complex of scientifically based criteria and conditions. Results and discussion. During the experiment we identified the indices of “timely” reaction of the sambo wrestlers in the control group which improved only by 6 %, compared to the experimental group (57% more compared to the indices at the beginning of the experiment). It presented the dynamics of the tapping test of the sambo wrestlers in the control and experimental groups, from the first to the fourth period. The dynamics showed the local tiredness of the nervous and muscular system of the body, caused by the depression of their brain motor centers, which increased in both groups, but had a visible tendency of aggravation to the fourth period in the control group (from the first to the fourth period – within the limits of 62.80 %) compared to the experimental group, where the speed of elementary movements of children in the tapping test decreased inconclusively in every time period. Thus, at the end of the second period the results of the experimental group decreased by 11.25 %, to the end of the third period they lowered by 36.62 %, to the end of the fourth period they decreased by 15.55 % of the data of the previous period, which in conclusion comprised the decrease from the first to the fourth period up to 63.42 %. Conclusion. Thus, the veridically relevant situation of psychomotor development in the experimental group of sambo wrestlers, in our opinion, became possible due to their preliminary readiness (selection results) and the active experimental training action on them

scholarly journals BIOLOGICAL EFFECTS OF SILICON OXIDE NANOPARTICLES ON BROILER CHICKEN

2020 ◽  
Vol 5 (2) ◽  
pp. 63-71
Author(s):  
Vladimir Nikulin ◽  
Aleksandra Mustafina
Keyword(s):  
Red Blood Cells ◽  
Total Protein ◽  
Blood Cells ◽  
Broiler Chickens ◽  
Broiler Chicken ◽  
Silicon Oxide ◽  
The Body ◽  
Control Group ◽  
The Third ◽  
Experimental Group

The aim of the study is to increase the productive qualities of broiler chickens by including ultrafine silicon oxide into main diet. During the experiment, the biological effect of ultrafine silicon oxide on broiler chickens was estab-lished. Use of ultrafine SiO2 particles for poultry feeding contributed to an increase in the number of red blood cells and content of total protein and albumins. By the end of the experiment, the number of red blood cells in birds in-creased by 17.43% (P≤0.001) – in the blood of birds of the first experimental group, 16.51% (P≤0.01) – the second one, 20.80% (P≤0.001) – the third experimental and 21.71% (P≤0.001) – the fourth experimental group, compared with the indicator of the control group. The amount of total protein in blood serum of chickens of the first and the second experimental groups increased by 1.36-1.39 %, in the third and fourth ones there was a significant (P≤0.05) increase by 5.45 and 3.05%, respectively. The blood glucose content of chickens in the experimental groups is higher by 8.04-23.65% compared to this indicator with ones in the control group. During the experiment feed con-sumption per 1 kg gain of live weight decreased: in the first experimental group by 3.00 % in the second by – 0.50 %, the third – 6.00 % the fourth– by 4.50 %, compared to this with the control group. The chicken’s vibrancy of the first the experimental group was higher by 4.77 %, the second – by 6.20 %, the third – by 19.25 % and the fourth– by 11.59% than in the control one. Consequently, when converting the feed energy into the body energy of a broiler chicken, the energy conversion coefficient of the experimental group of poultry is higher than that of the control one by 7.16-21.76 %. Thus, the most optimal dose for further research was determined.

scholarly journals INDIRECT SELECTION OF FEMALE TROUT AS A SELECTION METHOD TO INCREASE THEIR PRODUCTIVITY AND RESISTANCE

2020 ◽  
pp. 180-186
Author(s):  
I.N. Agleev ◽  
◽  
А.V. Bushov ◽  
Keyword(s):  
Live Weight ◽  
Indirect Selection ◽  
Selection Method ◽  
The Body ◽  
Oxygen Absorption ◽  
Control Group ◽  
Head Region ◽  
Functional Features ◽  
Experimental Group ◽  
Selection Of

The scientific work considers the selection method of selection in a herd of producers of rainbow trout Kamloops, taking into account values of positive correlation of some morphometric characteristics and degree of development of their reproductive products, as well as the features of natural protective functions of their body at the age of three. It is established that the somatic structure and, development of postorbital region largely determine the functional features of trout, as well as their reproductive qualities. In the indirect selection of three-year-old breeders, taking into account morphometry and correlation, females with a size of postorbital head region greater than 55 mm exceeded by 29.2% the live weight and by 40.4% the weight of trout caviar with a length of this head region less than 55 mm. When comparing the resistance of two experimental groups of three-year-old breeder flock, certain differences in immune proteins and hemoglobin content in blood were revealed. Note that in the selected group of fish, a large degree of saturation of red blood cells with hemoglobin is observed, which indicates increased share of oxygen absorption by the body, as well as the intensity of redox processes of metabolism. Indicators of serum proteins of trout in experimental groups vary ambiguously. So in the experimental group, producers had an average total protein in blood of 63.26 g / l, which is significantly 17.5% more than in the blood of fish in the control group. This can be explained by the relationship of the globulins with the immune status of fish of experimental group and its resistance by raising the level of globulin fraction, a high amount of Ig M` protein (by 42.9%) in the blood of trout in the experimental group suggests more aggressive immune system in these fish to viral, invasive and other infections, indicating improved adaptability of selected herds.

scholarly journals Intensity of growth of calves of Ukrainian black-and-white dairy breed in colostrum and milk periods while feeding them with pyridoxine hydrochloride

2019 ◽  
Vol 21 (90) ◽  
pp. 108-112
Author(s):  
O. V. Yaremko ◽  
R. A. Peleno
Keyword(s):  
Live Weight ◽  
Group Iv ◽  
Scar Formation ◽  
The Body ◽  
Control Group ◽  
Pyridoxine Hydrochloride ◽  
Group V ◽  
The Third ◽  
Daily Increments ◽  
Experimental Group

The effect of pyridoxine hydrochloride on the body mass of animals, absolute and average daily increment, relative growth rate, growth factor of live weight and multiplicity of increase in live weight of calves in the early stages of postnatal ontogenesis were studied. For the experiment, six groups of one-day calves (control and five experimental) were formed, with 5 animals in each, which, in addition to the main diet (MD), fed pyridoxine hydrochloride in different doses, according to the scheme: control group – MD, I experimental group – MD + 1 mg/kg g. m pyridoxine hydrochloride, II – MD + 2 mg/kg g. m of the preparation, ІІІ – MD + 3 mg/kg of w. m., IV – MD + 4 mg/kg g. m and V experimental group – MD + 5 mg/kg g. m pyridoxine hydrochloride. Conditionally, the research was divided into four periods: colostrum – from birth and up to 5 days, until the formation of digestion – from 5 to 21 days, the period of the formation of digestion scar – from 21 to 60 days and the end of the milk period – from 60 to 90 days. It was established that feeding to calves with pyridoxine hydrochloride resulted in an increase in the live weight of 60 days of calves by 5.9% in the second group (P < 0.05), by 8.7% in the third group, by 8.3% in IV and 9.2% in V groups (P < 0.001) and for 90 days it was higher by 9.3%, 9.1%, 9.2% and 9.1% respectively (P < 0.05). The highest average daily increments were in the colostrum period in calves IV and V groups, which were added to the main diet, respectively, 4 and 5 mg/kg b.w. pyridoxine hydrochloride, in the period prior to the formation of digestion scar in calves of group IV, in the period of the formation of digestion scar in calves of the III group and at the end of the milking period in calves of group V. Absolute incresements of calves in the colostrum period and the period prior to the formation of digestion scar were the highest in calves of Group IV and the difference in control was respectively 0.34 and 1.05 kg. During the period of the digestion scar formation and the end of the milk period, the highest absolute increases were in calves of group V, which was added to the main ration of 5 mg/kg b.w. pyridoxine hydrochloride. The highest increase in body weight of calves in colostric period and prior to the operation scar rate was in group IV, the period of digestion scar formation was in the third group and during the completion period of milk in the second group of calves. In colostric period the increase of live weight was higher in calves III, IV and V groups of 5 to 21 days in calves of group IV, from 21 to 60 days in the third group and during the completion period of milk in the second group of calves.

scholarly journals The use of sodium gumate as a biostimulator for healing castration wounds in male dogs (Сlinical case)

2020 ◽  
pp. 23-23
Author(s):  
P. О. Zaika ◽  
◽  
O. V. Kantemir ◽  
Keyword(s):  
Inflammatory Process ◽  
Human Life ◽  
Clinical Signs ◽  
The Body ◽  
Control Group ◽  
Physiological Mechanisms ◽  
Once Daily ◽  
The Third ◽  
Sodium Humate ◽  
Experimental Group

Dogs play a significant role in human life. It is difficult to list all the various aspects of their application. But along with the positive qualities of using dogs is the problem of regulating the numbers of stray animals. Among the agents that stimulate the processes of repair and regeneration, increase the basic physiological mechanisms of protection of the body are humic preparations such as sodium humate. Taking into account that preparations of natural origin have a special influence on the inflammatory process, it is necessary to find and study the possibilities of using biological preparations of humic acids. Six animals were selected for the detection of the effect of sodium humate on dogs by analogues. Castration was carried out in an open manner according to conventional methods After surgery, the animals were subcutaneously injected with a 0.1% solution of sodium humate at a dose of 0.1 ml per 1 kg of body weight, and the control saline solution once a day for 14 days. Examination of wounds and thermometry was performed twice daily for 16 days. Castration wounds were treated with antibacterial aerosol once daily. No additional medication was used. In the post-castration period, all operated dogs did not observe any bleeding, loss of the common vaginal sheath, intestine, cult of the seminal cord, or other complications. Since the third day in the general condition of the animals of the experimental group significant changes were observed, which were expressed in the attenuation of the signs of inflammation, which was manifested in the reduction of hyperemia of the wound edges and their edema. The tenderness of the scrotal tissue was noted, and the scrotal skin became folded. In control animals the development of the inflammatory process was more pronounced and occurred 2 to 3 days later than in the experimental animals. On the third day after surgery, the control animals showed clinical signs characteristic of acute inflammation: hyperemia, sharp pain and swelling of the scrotal tissues, elevated local temperature. In two animals of the control group swelling was spread beyond the scrotum - a slight swelling of the prepuce was noted. These signs were manifested against the background of general depression and decreased appetite. Recovery occurred on day 12 in the experimental group and on day 16 in the control one.

scholarly journals Peculiarities of nutrient digestibility of rations of pregnant ewes with the additional introduction of cobalt

2018 ◽  
pp. 24-31
Author(s):  
V. Mykytyuk ◽  
T. Vasilenko ◽  
O. Orischuk ◽  
S. Tsap ◽  
I. Porotikova
Keyword(s):  
Cobalt Chloride ◽  
Mineral Elements ◽  
Nutrient Digestibility ◽  
The Body ◽  
Control Group ◽  
Fourth Group ◽  
The Third ◽  
Experimental Group

The results of studies on the effect of various doses of cobalt with an optimized level of sulfur in rations of Askanian meat-and-wool ewes on digestibility of nutrients of consumed feed and digestibility of the studied mineral elements are presented. It was established that the level of nutrient digestibility of rations was higher in ewes of the experimental groups, which, to the generally accepted norm, were additionally injected with cobalt chloride in the amount of 10 %, which was equal 0.825 mg, 20 % – 0.900 mg, and 30 % – 0.975 mg per head per day . As a result of the conducted research, it was found that the ewes of the second experimental group differed in the highest indices of digestibility of nutrients of the ration, which increased the rate of cobalt by 10 %. The additional introduction of 20 % and 30 % cobalt to the basic ration did not contribute to a further increase in the digestibility factors of nutrients in the body of ewes of the experimental groups. The research has shown that the uptake of cobalt by experimental ewes increased as this element increased in the rations. Thus, 0.31 mg of cobalt was assimilated by the ewes of the second experimental group, which is 0.06 mg or 20.0 % higher compared to the control group; to the third-group of ewes by 0.07 mg or 28.0 % and to the fourth-group ewes by 0,08 mg or 32.0 % compared with analogues of the control group. However, when calculating these indicators in relative terms, it was established that the highest percentage of cobalt absorbed from that received was in the ewes of the second experimental group. Their advantage relative to the control group was 4.60 % (P <0.01), and III and IV experimental groups – 2.11 and 0.19 absolute percent.

scholarly journals Possibilities for preventing fatty liver in cows during peripartal period

2008 ◽  
Vol 62 (1-2) ◽  
pp. 13-24
Author(s):  
Horea Samanc ◽  
Danijela Kirovski ◽  
Milijan Jovanovic ◽  
Ivan Vujanac ◽  
Radisa Prodanovic ◽  
...  
Keyword(s):  
Vitamin C ◽  
Fatty Liver ◽  
Body Condition ◽  
Glucose Concentration ◽  
The Body ◽  
The Other ◽  
Control Group ◽  
Blood Samples ◽  
The Third ◽  
Experimental Group

The objective of these investigations was to examine possibilities for preventing fatty liver in cows during the peripartal period using the preparation HEPARENOL which includes methionine, lysine and choline in its composition. Investigations were performed on cattle of the Holstein breed whose average production during their last lactation was 8120 liters. The cows included in the experiment were divided into three groups of 10 cows each. Cows of the first group were administered the preparation HEPARENOL perorally 5-7 days before partus in daily doses of 50 ml per animal, and then daily during the first seven days after parturition in daily doses of 100 ml per animal. The second group of cows were administered the preparation in the same way as the first group, but they also received vitamin C injected deep i.m. in doses of 1000 mg per animal per day. The third group of cows were not exposed to any treatment and served as the control group. The body condition of the cows was marked according to the system Elanco Animal Health Bulletin Al 8478. Blood samples were taken by puncture of the jugular vein before the beginning of treatment, and on the third and 12th days after partus. The glucose concentration was determined in the blood samples. On the 12th day after partus, liver tissue samples were taken by biopsy for pathohistological examinations. Since the cows were fed in the same way and were in the same phase of the production-reproduction cycle, the average score of the body condition before treatment was approximately the same. However, on the 3rd day after partus, cows of the second experimental group showed average values that were significantly lower in comparison with the other two groups of cows. It is very interesting that a significantly lower value of glycemia (x=1.93?0.34 mmol/l) was established in the same group of cows at this time. In cows of the first experimental and the control group, glycemia was approximately the same during the examined period. In cows of the second experimental group on the 12th day after partus the glucose concentration significantly increased (x=2.42?0.58 mmol/l) against the values obtained for the 3rd day, but it was still significantly lower in comparison with the glycemia of cows of the first experimental (x=3.34?0.61 mmol/l) and the control group (x=3.48?0.49 mmol/l). Practically, throughout the entire period glycemia was statistically significantly lower in the second experimental group in comparison with the other two groups of cows. The degree of fatty liver on the 12th day postpartally, or five days after the end of treatment, was the lowest in cows of the second experimental group. In order to stress the differences, it is pointed out that there were two cows without fatty liver in the second group, while there were no such cows in the first experimental or in the control group. This group contained the smallest number of cows with a mean degree of fatty liver (n=2), while two cows had very strong fatty liver. There were no differences between the control and the first experimental group in the number of cows with a mean degree of fatty liver, with the exception that the control group had two and the first experimental group one cow with a mild degree of fatty liver. It seems that treatment using the preparation HEPARENOL, or methionine, lysine and choline, before and after parturition did not have a significant effect on the incidence and degree of fatty liver. Only cows with additional and simultaneous treatment with vitamin C had a lower incidence and degree of morphological changes in the liver, in addition to the sigfnificant changes in body condition and the blood glucose concentration.

scholarly journals The morphological composition of the blood and the peculiarities of metabolism in gonadectomized cockerels of the Adler silvery breed

2021 ◽  
pp. 18-26
Author(s):  
I. Cheverda ◽  
M. Zakharenko
Keyword(s):  
Uric Acid ◽  
Blood Plasma ◽  
The Body ◽  
Metabolic Parameters ◽  
Clinical State ◽  
Control Group ◽  
The Third ◽  
Morphological Composition ◽  
Physiological Values ◽  
Experimental Group

The article reflects the results of a study of the morphological composition of blood, indicators of metabolism and the content of hormones in the blood plasma of gonadectomized cockerels of the Adler silvery breed. In the experiment, 40 males were used at the age of 6 weeks, of which two groups were formed, a control and an experimental, 20 heads each. It was found that during the preparatory (leveling) period, the clinical state, morphological composition of blood and metabolic parameters in the experimental group of males did not differ from each other and were within the limits of their physiological values. There were also no differences in blood glucose concentration, protein content, triglycerol, cholesterol, uric acid, as well as the activity of alkaline phosphatase, alanine and aspartate aminotransferase in the blood plasma of cockerels in the experimental and control groups during the preparatory period. Gonadectomy of males by surgical intervention at the age of six weeks did not significantly affect the morphology of their blood on the third day, with the exception of ESR, the value of which in birds of the experimental group was 1.9 times higher than in the control. In gonadectomized males, the number of platelets in the blood decreased by 30.7% compared to the control, which indicates a decrease in platelet activity and is probably associated with their participation in blood coagulation processes in the body after gonadectomy. Other indicators of the morphological composition of blood, namely, the number of erythrocytes, leukocytes, lymphocytes, eosinophils and neutrophils in gonadectomized males did not change compared with the control. It was found that the concentration of glucose in the blood, as well as total protein and uric acid in the blood plasma of males who underwent gonadectomy on the third day of the research period were at the level of the values of the control group birds and corresponded to the physiological values of these parameters in clinically healthy birds. On the 125th day of the main period in gonadectomized males, the level of glucose and protein, as well as indicators of lipid metabolism, namely, the concentration of triglycerol and cholesterol in the blood plasma did not change, while the content of uric acid increased by 23.7% compared with the control. It was found that the content of cortisol in the blood plasma of gonadectomized males was 3.2 times lower, and testosterone 10.2 times lower than in the control. So, gonadectomy of cockerels does not affect the morphological composition of the blood, indicators of the metabolic status of the bird, but it helps to reduce the content of cortisol and testosterone in the blood plasma. Key words: roosters, gonadectomy, blood morphology, metabolic parameters, enzyme activity, cortisol, testosterone.

Influence of DAFS-25+polizon composition on blood and functional state of liver of steers at fattening

2020 ◽  
pp. 15-18
Author(s):  
Inna R. Kilmetova ◽  
◽  
Igor A. Rodin ◽  
Nazira I. Khayrullina ◽  
Nikolay G. Fenchenko ◽  
...  
Keyword(s):  
Functional State ◽  
White Blood Cells ◽  
Live Weight ◽  
The Body ◽  
Farm Animals ◽  
Control Group ◽  
Standard Diet ◽  
The Impact ◽  
Experimental Group ◽  
Stimulation Of

Summary. The disbalanced feeding and the uneven distribution of micro- and macroelements in the environment leads to a trace element, in particular hypomelanosis. To accelerate the growth and preservation of young farm animals include in the diet of various biological additives and drugs, which include selenium. For stimulation of weight gain in the livestock industry, as well as for the prevention and treatment of pathological processes in addition to micro - and macrouse amino acids, primarily methionine. The aim of this work was to study the influence of composition of DAFS-25+Polizon on morpho-biochemical parameters of blood and functional state of the liver in fattening bulls of black-motley breed in the conditions of the Republic of Bashkortostan. Experiments using were conducted on bull-calves of black-motley breed of the properties in the properties age from 6 to 15 months. The first experimental group during the experiment was additionally given the composition of DAFS-25+Polizon at a dose of 2 mg/kg, the animals of the control group received a standard diet. To assess the impact of the composition DAFS-25+Polizon on metabolism cattle studied morphological and biochemical indicators of blood and conducted histological examination of the liver. It is established that the use of the composition of DAFS-25+Polizon at a dose of 2 mg/kg increases the number of erythrocytes and hemoglobin in the experimental group and reduces the amount of white blood cells. The serum content of total protein, phosphorus and calcium increases in the group of experimental animals. Microscopic examination of the liver revealed no changes in the structure of the organ and hepatocytes in the experimental group, whereas in the control group hemodynamic disorders and dystrophic changes in liver cells were observed. Thus, the use of the composition DAFS-25+Polizon at a dose of 2 mg/kg of live weight in fattening bulls black-and-white breed contributes to the increase of redox processes in the body, stimulation of metabolism, prevent the development of liver disorders of cellular mechanisms of metabolism, optimizes the structure of the liver, which generally provides higher productivity.

THE EFFECT OF APPLYING DEMONSTRATION METHOD ON STUDENTS’ ACHIEVEMENT IN SPEAKING SKILL AT THE THIRD GRADE OF SMK PAB 3 MEDAN ESTATE

2015 ◽  
Vol 4 (2) ◽  
Author(s):  
Meryanti Napitupulu And Anni Holila Pulungan
Keyword(s):  
High School ◽  
Control Group ◽  
Vocational High School ◽  
Control Groups ◽  
Speaking Test ◽  
The Third ◽  
Speaking Skill ◽  
The Subject ◽  
And Control ◽  
Experimental Group

This study was conducted as an attempt to discover the effect of applying Demonstration Method on students’ achievement in speaking skill. It was an experimental research. The subject was students of Grade XII, Vocational High School (Sekolah Menengah Kejuruan: SMK), which consisted of 79 students. The research was divided into two groups: experimental and control groups. The instrument used to collect the data was speaking test. To obtain the reliability of the test, the writer applied Kuder Richardson 21 formula. The result of the reliability was 0.7, and it was found that the test was reliable. The data were analyzed by using t-test formula. The analysis showed that the scores of the students in the experimental group were significantly higher than the scores of the students in the control group at the level of significant m = 0.05 with the degree of freedom (df) 77, t-observed value 8.9 > t-table value 1.99. The findings indicate that using Demonstration Method significantly affected the students’ achievement in speaking skill. So, English teachers are suggested to use Demonstration Method in order to improve students’ achievement in speaking skill.

Local mineral feed additives in the rations of steers of Hereford breed

2020 ◽  
pp. 28-39
Author(s):  
M. Grigoryev ◽  
N. Chernogradskaya
Keyword(s):  
Economic Effect ◽  
Live Weight ◽  
Negative Influence ◽  
Feed Additives ◽  
The Body ◽  
Control Group ◽  
Mineral Salts ◽  
Meat Productivity ◽  
Experimental Group ◽  
Mineral Feed Additives

Animals imported to Yakutia from other regions fall into feeding and housing conditions that differ from their usual agro-climatic conditions, which causes the problem of their adaptation. Yakutia is one of the areas where the feed of its own production has a lack of basic minerals, which affects the health and productivity of animals, which has an additional negative influence on the adaptation process of imported cattle. In order to replenish macro- and microelements in the body, it is necessary to introduce various local mineral feed additives, premixes, and use mineral salts into the ration. Under the conditions of Central Yakutia the influence of local mineral feed additives (zeolite of the Khonguruu Deposit in the Suntar district and sapropels of local lakes) containing macro- and microelements that increase the meat productivity of steers has been studied. As a result of the research the influence of local mineral feed additives on meat productivity and physiological condition of Hereford steers has been established. Influence of zeolite and sapropel in a complex with mineral salts on digestibility of nutrients of the ration and use of nitrogen, calcium and phosphorus by experimental animals has been defined. The influence of feed additives on the quality of meat products has been studied. The results have shown that the use of local mineral feed additives in the composition of ration of steers during the fattening period at a dose of 0,7 g zeolite per 1 kg of live weight of the animal and 200 g of sapropel in combination with 10 g of mineral salts contributed to the gain in live weight, carcass weight, carcass yield, yield of edible parts, and economic efficiency of fattening. For the entire period of the experiment the gain in live weight in groups was: in control group 2222,9 kg, in the 1st experimental group 2396,2 kg, in the 2nd experimental group 2471,1 kg. The total economic effect for the 1st experimental group for the period of experiment amounted to 44,3 thousand Rubles, for the 2nd experimental group 78,0 thousand Rubles or per 1 head/day 14,06 and 24,76 Rubles, respectively.

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