scholarly journals Influence of the supplement «Press-Acid» on protein-mineral metabolism and resistance of piglets

2018 ◽  
Vol 20 (83) ◽  
pp. 320-324 ◽  
Author(s):  
N.V. Chеrniy ◽  
E.V. Matsenko ◽  
Yu.A. Shchepetilnikov ◽  
Yu. V. Maslak ◽  
O.S. Machula ◽  
...  
Keyword(s):  
Blood Serum ◽  
Mineral Metabolism ◽  
The Body ◽  
Control Group ◽  
Immunological Parameters ◽  
Oxidative Reaction ◽  
Experimental Animals ◽  
Growth Energy ◽  
First Time ◽  
Experimental Group

The aim of this study was to determine the effect of supplement «Press-Acid» on some parameters of mineral and protein metabolism and resistance of piglets. The study was done in condition «Meta» on two groups of piglets of the F-1 (BWхL) genotype. There were determined indexes of bacterial and lysocim activity of blood serum, calcium and phosphorus in piglets at the age of 21–30–45–75 days. Effect of supplement on the growth rate, morbidity and safety of pigs were revealed. We used hygienic, zootechnical, hematological, biochemical, immunological and statistical methods of analysis. The influence of «Press-Acid», which consist of formic, lactic, citric and fumaric acids, was established for the first time. The concentration of calcium in blood serum of experimental group of piglets were lower than in animals of control group. The level of phosphorus increased in blood serum of experimental animals on 11.83% (30 day), on 3.74% (45%), on 17.65% (75 day) respectively. Concentration of hemoglobin and the amount of erythrocytes increased on 11.8% and on 1.82% (30 day) in animals that feed the supplement. There were established the increase of viability of the pigs with gastro-intestinal diseases which were given the supplement in comparison with that, who did not feed it. Severity of diseases was determined using the Melenberg coefficient which did not higher than 1.2–2.4 score, it was lower on 6,0–9,3 unit than in control group. Using the supplement allowed to increase the intensity of growth of piglets by 3.7% (45 day) and 9.4% (75 day) respectively. Concentration of total protein, albumines and globulins increased on 8.66%, 9.90%, 7.3% respectively. The activity of alaninaminotransphaerasae in the blood serum of experimental animals were lower on 3.45% than in control piglets. Lysocym and bacterial activity of blood serum were higher in experimental group of piglets. Feeding piglets with addition supplement Press Acid promotes higher grow rates in experimental animals, that can be explained increases of oxidative-reducing processes in them organism. Feeding piglets with acidifier «Press-Acid», «Nifulin», zinc oxide, probiotics «Lactisan Complex» promotes growth energy, increase of morphological, biochemical and immunological parameters which indicates a higher level of oxidative reaction in the body. A low coefficient of Melenberg is recorded in the piglets at the age of 1 day. Safety was within 92.1–97.0%. That indicates a more successful elimination of complexes of protein, mineral substances, humoral protection in blood of experimental group of animals.

scholarly journals THE EFFECT OF «ARCUSIT» ON BIOCHEMICAL AND IMMUNOLOGICAL PARAMETERS BLOOD SERA IN SILVER-BLACK FOX (SILVER-BLACK FOX)

2021 ◽  
Vol 247 (3) ◽  
pp. 192-197
Author(s):  
I.I. Okulova ◽  
◽  
I.A. Domsky ◽  
Yu.A. Berezina ◽  
Z.N. Beltyukova ◽  
...  
Keyword(s):  
Experimental Data ◽  
Blood Serum ◽  
Bactericidal Activity ◽  
Lysozyme Activity ◽  
The Body ◽  
Phagocytic Index ◽  
Control Group ◽  
Immunological Parameters ◽  
Nonspecific Resistance ◽  
Experimental Group

The use of «Arkusit» at a dose of 20 μg / kg of body weight indicates a beneficial effect on the factors of nonspecific resistance of the silver-black fox. The concentration of alkaline phosphatase in the blood serum in the experimental group decreased by 1.8 times (P <0.001), the ALT index - by 1.2 (P <0.05). The concentration of glucose in the experimental group increased 2 times (P <0.05) compared with the control group. In animals of the experimental group, the lysozyme activity of blood serum increased 1.3 times (P <0.05), the OPR reaction and the phagocytic index - 1.4 times (P <0.05), the bactericidal activity of blood serum - 1.8 times (P <0.05). «Arcusit» stimulates the synthesis of gamma globulins, increases the opsonophagocytic, bactericidal activity of blood serum. Thus, the analysis of experimental data indicates that the drug «Arcusit» has a pronounced immunostimulating effect, providing the activation of factors of nonspecific resistance of the body of the silver-black fox.

scholarly journals Productivity and resistance of pigs under the action of immunostimulants

2017 ◽  
Vol 19 (79) ◽  
Author(s):  
N. V. Chorniy ◽  
O. S. Machula ◽  
V. V. Voronyak ◽  
V. P. Lyasota ◽  
O. P. Reshetnichenko
Keyword(s):  
Blood Serum ◽  
B Lymphocytes ◽  
Live Weight ◽  
The Body ◽  
Control Group ◽  
Average Weight ◽  
Large White ◽  
Immunological Parameters ◽  
Humoral Factors ◽  
Experimental Group

The aim of the work was to study the influence of stimulant drugs – the regenerating biological stimulant (RBS) and Imunolac on the immunological state and productive qualities of piglets. RBS is a complex of organic compounds of animal tissue that stimulates nonspecific immunity and increases the protective functions of the body. Imunolac is a preparation of enzymatic hydrolysis of the cell wall of Lactobacillus, activating the cellular and humoral factors of non-specific animal resistance. To achieve this goal, the following tasks were set: to find out the microclimate condition and sanitary regime in the boxes in which the experimental animals were kept; – to study the influence of immunostimulating drugs on the growth and intensity of the test pigs, their safety; to study the dynamics of immunological parameters (circulating immune complex (CIC), T-and B-lymphocytes), the content of immunoglobulins (Jg G, Jg M and Jg A) while using RBS and Imunolac. The research was carried out in the pedigree plant «Stepnoy» of the Zaporozhye region on pigs of the Large white breed × Landras. Piglets of the control group were injected with 0.9% sodium chloride solution at a dose of 1 ml/head. During the experiment, the microclimate was monitored for temperature, relative humidity, air speed, carbon dioxide, ammonia, air contamination with microflora. Cellular indices were determined from the ratio of neutrophils to E. coli according to VG Gostivu, 1956, bactericidal activity of blood serum (BASK) – according to the method of O.V. Smirnova and TA. Kuzmenoy, 1966, lysozyme activity of blood serum (LASK) according to V. Dorofeychuk, 1968. The content of T lymphocytes was determined according to M. Jondal, 1973, B-lymphocytes – according to N.S. When piglets were grown at the temperature lower than 3,5–8 °C, humidity – by 5–8% higher, the parameters of NH3 and CO2 higher by 0.8–1.2%, the contamination microflora was twice as much as recommended by the sanitary norms the genetic productive potential of the animals is not fully realized, while – the highest daily average weight gain was in the pigs, which were injected intramuscularly with RBS growth stimulant. They exceeded the animals from the control group on the 20th and 30th days of the experiment – by 24.3% and 14.4%, live weight – by 15.3% (P < 0.05). The growth rate in the animals that were injected with imunolac was less expressed; the diseases with the symptoms of dyspepsia and bronchopneumonia were registered in 5–10% of the pigs from the experimental groups that received RBS and imunolac that is 10–12 times less as compared to the control group; in the pigs from the experimental group 1, the BASK was at the level of the average values of 56.52 ± 2.03%, from the experimental group 2 – 59.48 ± 1.80%, by 5.2% higher (P < 0.05); LASK indices in the animals of the experimental group tended to increase but the differences were not trustworthy (P < 0.5); the cell indices of resistance in the pigs that received RBS were higher: the phagocytic activity of blood serum – by 4.3% (P < 0.05), phagocytic number – by 9.7% (P <0.05); the highest concentration of immunoglobulin of class Jg G (21.82 ± 0.3 mg/ml) was revealed in the animals that received RBS preparations, the concentration of the above immunoglobulins was slightly below – 19.86 ± 0.18 mg/ml in the pigs that received imunolac (0–1). For immunoglobulins of class Jg M and Jg A, the fluctuations  between the experimental groups were within the limits of 2.23 ± 0.01 and 2.36 ± 0.09 mg/ml.

scholarly journals «Energosil» in the diets of replacement gilts

2019 ◽  
Vol 20 (2) ◽  
pp. 153-162
Author(s):  
A. A. Suvorov ◽  
в Sh. Gayirbegov ◽  
A. S. Fedin ◽  
A. M. Guryanov
Keyword(s):  
Body Weight ◽  
Live Weight ◽  
Feed Additives ◽  
The Body ◽  
Feed Additive ◽  
Control Group ◽  
Practical Training ◽  
Optimal Dosage ◽  
Growth Energy ◽  
Experimental Group

The article gives scientific substantiation of using silicon-containing new feed additive “Energosil” for replacement gilts. The studies were conducted in pig-breeding complex of the Center for Practical Training of Agricultural Specialists in Mordovia Republic. There were three experimental groups of replacement gilts (10 animals each). The effect of various dosages of Energosil (5.0, 7.5, and 10 mg per kg of body weight) on digestibility, nutrient utilization, and animal growth energy was studied. The most optimal dosage of a new feed additive in their rations was revealed, which constituted 5 mg / kg of the animal live weight. It was established that the animals from the first experimental group, who received silicon-containing feed additives of this amount digested the nutrients of the diet better than their counterparts from the other groups. Compared to the control group, the digestibility of dry matter increased by 3.62% (p<0.05), organic matter by 3.29% (p<0.01), crude protein by 4.09% (p<0.001), fat by 4.30% (p<0.01), cellulose by 3.79% (p<0.01) and nitrogen-free extractives by 2.03% (p>0.05).Replacement gilts of the first experimental group, who were given Energosil in the amount of 5 mg / kg body weight in addition to the basic ration, retained nitrogen in their bodies by 17.1%, calcium by 55.9% and phosphorus by 69.7% more than their counterparts from the control group. It contributed to an increase in body weight of gilts from the first group compared to control counterparts by 10.8%. Increased dosages of Energosil (7.5 and 10 mg / kg body weight) also had a better effect on the growth energy of gilts compared with the control group. The feed additive in the amount of 7.5 mg kg of animal  live weight contributed to an increase in animal weight compared with control counterparts by 6.21 kg or 4.8% (p<0.05), with a third experimental group by 4.4 kg or by 3.4% (p<0.05). When given Energosil in the dosage of 10 mg/kg, the body weight of gilts from the third experimental group was higher by 1.81 kg or 1.4% (p> 0.05) compared with the control counterparts.

scholarly journals REASIL HUMICVET AND REASIL HUMIC HEALTH SUPPLEMENTS BASED ON HUMIC ACIDS IN THE DIETS OF DAIRY CALVES

2021 ◽  
Vol 6 (1) ◽  
pp. 64-70
Author(s):  
Andrei Frolkin ◽  
Haidar Valitov ◽  
Aleksandr Varakin ◽  
Valentina Kornilova
Keyword(s):  
Blood Serum ◽  
Live Weight ◽  
Mineral Elements ◽  
The Body ◽  
Control Group ◽  
Liquid Form ◽  
Daily Growth ◽  
Black And White ◽  
Significant Difference ◽  
Experimental Group

The purpose of the research is to increase the effectiveness of the supplement Reasil on the growth of milk-fed calves. For the scientific and economic experience, three groups of calves were formed (control, 1 and 2 experi-enced). Groups of animals of 10 heads were formed according to the principle of analogues. The indicators of live weight, growth and blood of calves were studied after Reasil use in a diet: Reasil HumicVet as a liquid form, and Reasil Humic Health – reduced to powder. In the experiment, animals of a black-and-white breed were used. The Reasil feeding in the diet contributed to an increase in the live weight of milk-fed calves in the 1-st and the 2-nd experimental groups at two months of age by 5.65 and 5.48 kg (or by 7.4 and 7.2%), respectively, compared to the indicator of the control group analogues. The average daily growth of calves of the experimental groups exceeded this indicator of control animals by 96 and 82 g, respectively. The blood of calves of the 1st and 2nd experimental groups, showed that hematoglobin was higher by 15.7 and 11.4%, red blood cells – by 16.5 and 15.1%, and the alkaline reserve – by 5.2%, compared with blood of calves from the control group, which indicates the activation of metabolic processes in the body. The total protein amount in the blood serum of animals from the experimental groups increased by 8.4 and 5.9% respectively, compared to the tests of calves from the control group. The albu-min content of animals of the 1st experimental group tested was higher by 5.3%; from the 2nd experimental group there was no significant difference compared to the control. The number of gamma-globulins in the blood of ani-mals of the experimental groups increased, which indicates an increase in defense reaction of animals. The con-tent of calcium in the blood serum of calves from the experimental groups was higher by 8.3 and 5.9%, phosphorus – by 4.8 and 2.4%, which indicates a more effective use of these mineral elements.

scholarly journals The impact of humic acid additives on mineral metabolism of rabbits in the postnatal period of ontogenesis

2020 ◽  
Vol 11 (2) ◽  
pp. 289-293
Author(s):  
M. A. Rybalka ◽  
L. M. Stepchenko ◽  
O. O. Shuleshko ◽  
L. V. Zhorina
Keyword(s):  
Alkaline Phosphatase ◽  
Humic Acid ◽  
Blood Serum ◽  
Bone Tissue ◽  
Mineral Metabolism ◽  
Histological Study ◽  
Postnatal Period ◽  
Control Group ◽  
Copper And Zinc ◽  
Experimental Group

Humic acids are characterized by chelating properties due to which they are able to influence the mineral metabolism in animals. Rabbits have species-specific characteristics of mineral metabolism, which distinguishes them from most species of mammals. For the experiment, 16 rabbits of 45-day-old of Hyplus breed were divided into the experimental and control group of 8 rabbits in each. The animals were 15 days in the preparatory period. The rabbits of the experimental group received humic acid additive individually with water in the amount of 5 mg/kg, the rabbits of the control group received pure water in the same amount. The ability of humic acid additive to increase the content of calcium, ionized calcium, iron, to correct the content of copper and zinc, and also to increase the activity of alkaline phosphatase in the blood serum of rabbits of the experimental group has been proved. We observed the early effect of the humic acid additive on increasing the content of iron and calcium ionized and a later effect on the activity of alkaline phosphatase and an increase in the content of copper in the blood serum. The influence of humic acid additive on the distribution of calcium, phosphorus, manganese, copper and zinc in bone tissue is determined. According to a histological study, there was a significant increase in the number of layers of osteons and osteoblasts in the bone tissue of the femur, an increase in the number of osteons and osteoblasts in the bone tissue of the sternum and an increase in the number of columns of chondrocytes and an increase in the number of chondrocytes in the column in the cartilaginous tissue of the sternum. The results of a histological study of bone tissue, together with an increase in structural macroelements in it and redistribution of osteotropic trace elements in the blood and bone tissue suggest the possibility of using a humic acid additive to intensify the growth and mineralization of bone tissue, which can improve the state of bone tissue of rabbits in the postnatal period ontogenesis.

scholarly journals The impact of humic acid additives on mineral metabolism of rabbits in the postnatal period of ontogenesis

2020 ◽  
Vol 11 (2) ◽  
pp. 289-293
Author(s):  
M. A. Rybalka ◽  
L. M. Stepchenko ◽  
O. O. Shuleshko ◽  
L. V. Zhorina
Keyword(s):  
Alkaline Phosphatase ◽  
Humic Acid ◽  
Blood Serum ◽  
Bone Tissue ◽  
Mineral Metabolism ◽  
Histological Study ◽  
Postnatal Period ◽  
Control Group ◽  
Copper And Zinc ◽  
Experimental Group

Humic acids are characterized by chelating properties due to which they are able to influence the mineral metabolism in animals. Rabbits have species-specific characteristics of mineral metabolism, which distinguishes them from most species of mammals. For the experiment, 16 rabbits of 45-day-old of Hyplus breed were divided into the experimental and control group of 8 rabbits in each. The animals were 15 days in the preparatory period. The rabbits of the experimental group received humic acid additive individually with water in the amount of 5 mg/kg, the rabbits of the control group received pure water in the same amount. The ability of humic acid additive to increase the content of calcium, ionized calcium, iron, to correct the content of copper and zinc, and also to increase the activity of alkaline phosphatase in the blood serum of rabbits of the experimental group has been proved. We observed the early effect of the humic acid additive on increasing the content of iron and calcium ionized and a later effect on the activity of alkaline phosphatase and an increase in the content of copper in the blood serum. The influence of humic acid additive on the distribution of calcium, phosphorus, manganese, copper and zinc in bone tissue is determined. According to a histological study, there was a significant increase in the number of layers of osteons and osteoblasts in the bone tissue of the femur, an increase in the number of osteons and osteoblasts in the bone tissue of the sternum and an increase in the number of columns of chondrocytes and an increase in the number of chondrocytes in the column in the cartilaginous tissue of the sternum. The results of a histological study of bone tissue, together with an increase in structural macroelements in it and redistribution of osteotropic trace elements in the blood and bone tissue suggest the possibility of using a humic acid additive to intensify the growth and mineralization of bone tissue, which can improve the state of bone tissue of rabbits in the postnatal period ontogenesis.

PREVENTION AND CORRECTION OF DISORDERS OF THE METABOLISM OF PIGS WITH THE USE OF NATURAL FEED ADDITIVES

2021 ◽  
Vol 1 (2) ◽  
pp. 189-194
Author(s):  
L.A. Nikanova ◽  
◽  
E.N. Kolodina ◽  
R.A. Rykov ◽  
◽  
...  
Keyword(s):  
Blood Serum ◽  
Total Bilirubin ◽  
Live Weight ◽  
Feed Additives ◽  
The Body ◽  
Control Group ◽  
Blue Green Algae ◽  
Adaptive Ability ◽  
Positive Effect ◽  
Experimental Group

This article presents the results of studies conducted on piglets with the inclusion of natural feed additives in the diet in order to prevent and correct metabolism. The first experimental group of piglets received a total diet consisting of fullfledged compound feed, a complex micro-feed product consisting of blue-green algae Spirulina, dihydroquercetin and organic iodine, the second experimental group additionally received Spirulina and dihydroquercetin. The introduction of these natural feed additives into the diet of piglets helped to increase the adaptive ability , correction and prevention of metabolic disorders in the body. In these studies, dacha feed supplements prevented hyperbilirubinemia. As a result, the concentration of total bilirubin in the blood serum of pigs of the first experimental group was 1% lower, in the second experimental group it was 13,7% lower than in the control group. They also had a positive effect on the functional state of the liver, as evidenced by a lower content of AlAT and AsAT activity in the blood serum compared to those in piglets of the control group with a close cholesterol-forming fraction. The animals of the experimental group were less ill and the safety of this group was 100%, in the control group it was 90%. The average daily increase in live weight of pigs for 90 days in the first experimental group was 1% higher than in the control group, and in the second experimental group it was 21,7% higher.

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.

Possibilities for treating aspirin-i lesions of the stomach and duodenum in patients with chronic coronary heart disease

2020 ◽  
Vol 98 (3) ◽  
pp. 231-235
Author(s):  
N. Yu. Borovkova ◽  
M. V. Buyanova ◽  
T. E. Bakka ◽  
M. P. Nistratova ◽  
T. V. Vlasova ◽  
...  
Keyword(s):  
Coronary Heart Disease ◽  
Heart Disease ◽  
Proton Pump Inhibitor ◽  
Blood Serum ◽  
Proton Pump ◽  
The Body ◽  
Control Group ◽  
Pge2 Level ◽  
Endogenous Prostaglandins ◽  
Chronic Coronary Heart Disease

To evaluate possibilities of aspirin-induced gastroduodenopathy treatment in the patients with chronic ischemic heart disease by means of applying the internal endogenous prostaglandins stimulant.  Material and methods. 340 patients suffering from chronic coronary heart disease and receiving a long-term acetylsalicylic acid (ASA) therapy were examined on the base of the cardiovascular care unit of The Nizhny Novgorod Regional Clinical Hospital named after N.A. Semaschko. There were evaluated frequency, nature and severity of the aspirin-induced gastroduodenopathy. The patients with coronary heart disease and aspirin-induced gastroduodenopathy were divided in two groups. In the first group of patients there was applied rebamipide therapy (in a single daily dose 300 mg) in combination with the proton pump inhibitor (PPI) — pantoprazole. In the second group there was applied only pantoprazole therapy. For the purpose of specification of AIG pathogenetic mechanisms development, all the examined chronic coronary heart disease cases were tested on the prostaglandin E2 (PGE2) level in blood serum before the therapy beginning and after the treatment. The control group was formed of chronic coronary heart disease patients showing no AIG evidence. Statistical processing of the received data was fulfilled with the program «Statistika 10.0». Results. AIG was registered in 15% out of 340 chronic coronary heart disease patients. According to the endoscopic examination erosive disease of the body and antrum prevailed among the patients. The PGE2 level in the blood serum was significantly lower (р = 0,00087) in these patients in comparison with the control group. In association with PPI and rebamipide mixed therapy, esophagogastroduodenoscopy results showed no pathological findings in gastrointestinal mucosa and statistically significant (р = 0,00067) blood serum PGE2 level growing in all the treated patients. As a result of exclusive PPI therapy there was marked positive dynamics in endoscopic view in 19 out of 25 patients and a tendency to normalization of PGE2 level in the blood serum. However, PGE2 level growing was insignificant. Conclusion. The presented research demonstrates the possibility of AIG treatment with the use of internal endogenous prostaglandins stimulant — rebamipide in complex with proton pump inhibitor PPI therapy.

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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