Vestnik of Ulyanovsk state agricultural academy最新文献

{"title":"EFFICIENCY OF ZEOLITE-BASED FERTILIZERS IN SOYBEAN CULTIVATION TECHNOLOGY IN THE CONDITIONS OF THE FOREST-STEPPE OF THE VOLGA REGION","authors":"A. Kulikova, N. Zakharov, N. Khairtdinova","doi":"10.18286/1816-4501-2022-4-38-44","DOIUrl":"https://doi.org/10.18286/1816-4501-2022-4-38-44","url":null,"abstract":"The article presents results of the studies on effectiveness of zeolite application, both in pure form and enriched with amino acids and carbamide, in soybean cultivation technology of USKHI-6 variety on leached lack soil in the conditions of the Middle Volga region. Calculations of correlation coefficient of dependence of the leaf surface area and the accumulation of nodules on soybean roots showed that the closest relation between the traits is observed in the budding - flowering phase. It was noted that in the phases of germination and trifoliate leaves, the area of the leaf surface practically did not differ among the variants of the experiment. As far as subsequent phases of development (budding, flowering, seed filling) is concerned, the leaf area increased in the variants with zeolite application both in pure form and enriched with amino acids and carbamide compared with the control. For example, the leaf surface area increased by 10.1-11.5 thousand m2/ha in the variants with introduction of zeolite enriched with carbamide at a dose of 250 and 500 kg/ha, and by 16.3-17.2 thousand m2/ha in case of NPK application compared with the control. It influenced the crop yields. The application of pure zeolite contributed to an increase of soybean grain yield by 0.21-0.29 t/ha, whereas introduction of zeolite enriched with amino acids and carbamide as a fertilizer increased yield by 0.42-0.60 t/ha with improved product quality. The introduction of zeolite and fertilizers based on it into the soil led to a significant improvement of product quality: the amount of protein and fat increased in the grain. At the same time, these fertilizers had a greater impact on the protein content. Soybean cultivation using zeolite and fertilizers based on it is economically feasible: the highest conditional net income was observed in the variant with introduction of azophoska and zeolite enriched with carbamide at a dose of 250 kg/ha, which amounted to 66195 rubles/ha at a cost of 11200 t/rubles.","PeriodicalId":23563,"journal":{"name":"Vestnik of Ulyanovsk state agricultural academy","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81532652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CONTAMINATION OF SEEDS AND PLANTS OF WHEAT WITH PHYTOPATOGENES OF FUSARIUM GENUS, METHODS OF RECOVERY","authors":"N. Zargaryan, A. Kekalo, V. Nemchenko","doi":"10.18286/1816-4501-2022-4-96-101","DOIUrl":"https://doi.org/10.18286/1816-4501-2022-4-96-101","url":null,"abstract":"Widespread production of grain crops and rejection of classical tillage technology have led to a noticeable increase of harmfulness of phytopathogens. First of all, this appertains to facultative parasites with a wide specialization - Bipolaris spp., Fusarium spp., as well as to secondary fungi from Alternaria spp., Cladosporium spp., Penicillium spp. genera and others. There is a simultaneous change of dominance in microbial community of seeds obtained in the Trans-Urals. Fungi of Fusarium spp. genus occupied the leading place among the most harmful pathogens, placing Bipolaris sorokiniana Sacc. Shoem. to the background. F. oxysporum (Schleht) Snyd, F. graminearum Schwabe, F. sporotrichoides Sherb are most spread on spring wheat, both in the tillering phase and at milk-wax stage of grain ripeness. The abundance and diversity of species was significantly higher in the tillering phase than when counted at the end of the vegetation season. To reduce the spread and development of any phytopathogen, it is necessary to apply a set of measures. One of the most effective measures is pre-sowing disinfection of seeds. However, the proposed preparations are not all equally effective in suppressing the development of the fungus of Fusarium spp. genus. During the experiment, it was found that seed treatment fungicides from the class of benzimidazoles - Zim (carbendazim), mixtures of active substances from the classes of triazoles with imidazole - HYIP (triticonazole + prochloraz), and also two triazoles - Oplot (difenoconazole + tebuconazole) were distinguished by high activity from 5.2 to 7.5 units. Application of a microbiological preparation (Bacillus subtilis), as well as its mixtures with a reduced application rate of a chemical disinfectant, showed the absence or low inhibition of fungus mycelium development.","PeriodicalId":23563,"journal":{"name":"Vestnik of Ulyanovsk state agricultural academy","volume":"21 2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77481546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"INFLUENCE OF FERTILIZER SYSTEMS ON SOIL FERTILITY OF TYPICAL BLACK SOIL AND WINTER WHEAT YIELD","authors":"A. Kulikova, E. Volkova, E. Yashin, E. A. Cherkasov","doi":"10.18286/1816-4501-2022-4-32-37","DOIUrl":"https://doi.org/10.18286/1816-4501-2022-4-32-37","url":null,"abstract":"The article is devoted to the study of the effect of fertilizer systems on soil fertility and winter wheat yield. The study was carried out on the experimental field of Ulyanovsk State Agrarian University named after P.A. Stolypin. The research materials were: straw; \"Biocomposite-correct\"biopreparation; zeolite; zeolite enriched with amino acids; Saratovskaya 17winter wheat variety. The scheme of the experiment included 8 variants: 1. Control; 2. Straw; 3. Straw+N10kg/t; 4. Straw + \"Biocomposite-correct\"; 5. \"Biocomposite-correct\"; 6. N64P32K54 (NPK); 7. Zeolite, 500 kg/ha; 8. Zeolite enriched with amino acids, 500 kg/ha. The area of the record plot is 20 m2 (2*10), the experiment is repeated four times. The soil of the experimental field is typical black soil. The experiments were carried out with strict observance of all methodological requirements, analyzes - according to the relevant state standards. It was found that mutual usage of straw and a biological product, as well as fertilizers based on zeolite, significantly improves physical (the structural coefficient increased by 0.3-2.1 units), biological (the degree of cellulose decomposition increased by 14-27 relative percent) and agrochemical (the content of mineral nitrogen increased up to 16% in the arable layer of the soil, available phosphorus compounds up to 23% and potassium up to 12%), the properties of the typical black soil. The yield of winter wheat was at the level of 6.08 t/ha , on average for 3 years,when zeolite enriched with amino acids was introduced into the soil, which is not inferior to the variant with mineral fertilizer. It is possible to increase soil fertility, as well as winter wheatyield, using biological farming techniques. Environmentally friendly farming, using mainly organic fertilizers and biological agents, will allow to abandon or reduce the dose of mineral fertilizers.","PeriodicalId":23563,"journal":{"name":"Vestnik of Ulyanovsk state agricultural academy","volume":"44 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90687851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"STUDENCHESKAYA NIVA - NEW WINTER SOFT WHEAT VARIETY","authors":"N. Zakharova, Zakharov N.G., M. Garanin, V. N. Ostin","doi":"10.18286/1816-4501-2022-4-85-90","DOIUrl":"https://doi.org/10.18286/1816-4501-2022-4-85-90","url":null,"abstract":"Winter soft wheat is the leading crop in agriculture of Ulyanovsk region. The problem of yield increase and winter wheat production in the region should be solved, among other things, by further selection improvement of this crop. The purpose of the research was to give a comprehensive economic and biological characteristics of StudencheskayaNivanew variety of winter soft wheat of Ulyanovsk State Agrarian University, which was studied on the experimental field of the Agrarian University in competitive variety testing (2018-2022), as well as on variety plots of the Middle Volga region of the Russian Federation ( 2020-2021). It was found that the new variety is characterized by high winter hardiness (4.4 points). StudencheskayaNiva variety formed large grain (weight of 1000 grains 38.3-55.0 g) in all years of research, including years with drought events of different intensity, which indicates its high drought resistance. According to the ripeness group, the new variety belongs to mid-early-early ripening wheat. The maximum yield for Studencheskaya Niva variety was achieved in 2021 - 7.73 t/ha. The yield potential of the new variety was realized to the greatest extent under conditions of sufficient moisture, however, relative tallness (113-116 cm) and lodging were noted. Plasticity evaluation on the trait of \"grain yield\" showed that the variety belongs to semi-intensive type of wheat. The advantage of the new variety is stability in formation of high quality grain.","PeriodicalId":23563,"journal":{"name":"Vestnik of Ulyanovsk state agricultural academy","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88399457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PROGRAMMING OF YIELD OF GRAIN CROPS AND ITS ASSURANCE IN AGRICULTURE OF ULYANOVSK REGION","authors":"A. Toygildin, M.I. Semenkin, I. A. Toygildina","doi":"10.18286/1816-4501-2022-4-71-76","DOIUrl":"https://doi.org/10.18286/1816-4501-2022-4-71-76","url":null,"abstract":"The article substantiates productive potential of grain crops and calculations to provide durable means of production and circulating capital goods of the crop production industry of Ulyanovsk region. According to a set of parameters, the climate-provided yield of grain crops is 4.52 t/haon the territory of the Ulyanovsk region, its level is limited by soil fertility and violation of science-based agricultural technologies. In order to achieve a climate-provided yield of grain crops, it is necessary to improve the technologies for their cultivation, taking into account moisture availability, soil fertility and other factors, in particular, it is necessary to improve the quality of seed material, justify the application rates of mineral fertilizers, carry out liming of acidic soils, justify plant protection systems and a system of machines for timely execution of technological operations. There is a need to improve the system of seed production of grain crops in Ulyanovsk region: namely, to increase the share of original and elite seeds in agricultural enterprises up to 25% of the total amount, which is 33,482 tons, in order to achieve this goal, it is necessary to intensify the work of seed farms in the region. To realize the bioclimatic potential of productivity of grain crops, it is necessary to improve the application rates of mineral fertilizers. Calculations carried out on removal of nutrients show that, on average, 144.0 kg/ha should be applied in the region, which is more than 90 thousand tons of a.w. with the following structure: nitrogen - 87.1 kg/ha (60.4%) and phosphorus - 57.2 kg/ha (39.6%). There are more than 450 thousand hectares of acidic soils that need liming in the structure of cultivated agricultural land; with an average application dose of 3 t/ha, agricultural enterprises must be provided with at least 1350 thousand tons of liming material. In case ofintensificationincrease of crop production, a rise of the number of harmful organisms is inevitable, therefore, the volume of application of plant protection products should be increased to 1205.8 thousand liters at the rate of 1.8 l/ha (at the current level of development of harmful organisms and registered plant protection products). For timely implementation of technological operations for cultivation of field crops, it is necessary to continue totechnically equipagriculture.","PeriodicalId":23563,"journal":{"name":"Vestnik of Ulyanovsk state agricultural academy","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79772294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"COMPARATIVE EFFICIENCY OF INTENSIVE AND BIOLOGIZED CULTIVATION TECHNOLOGIES IN FORMATION OF PRODUCTIVE MOISTURE RESERVES UNDER CROPS AND PEA YIELD","authors":"A. Kulikova, G. Saydyasheva, A. Laschenkov","doi":"10.18286/1816-4501-2022-4-45-52","DOIUrl":"https://doi.org/10.18286/1816-4501-2022-4-45-52","url":null,"abstract":"The work was carried out in 2019–2021 in the conditions of the forest-steppe of the Middle Volga region on leached heavy loamy black soil with a content of humus of 6.27%, 235–291 mg/kg of available phosphorus, 95–138 mg/kg of exchangeable potassiumin the arable layer, with a sum of absorbed bases of 39.7–42.2 mg-eq/100 g, pHkcl close to neutral (6.2 units). Crop rotation was seven-field grain-grass with the following alternation of crops: 1) pea - 2) winter wheat - intermediate sowing (mustard) - 3) winter wheat - 4) barley + perennial grasses - 5) perennial grasses 1 year– 6) perennial grasses 2 year– 7) spring wheat. The experiment was repeated three times, the placement of plots was systematic. The intensive technology included usage of calculated doses of mineral fertilizers, the treatment of crops with herbicides, usage of fungicides and insecticides, fertilization with nitrogen fertilizers and growth stimulators. As far asbiologized cultivation technology is concerned, all chemical agents were replaced by biological ones (fertilizers, plant protection). The research results showed that the technologies studied in the experiment had an unequal effect on soil properties, as well as on formation of productive moisture reserves in the arable layer of leached black soil. The yield of peain case ofbiologized cultivation technology over the years of research was at the level of 2.08 t/ha, which practically does not differ from the variant with intensive technology (2.17 t/ha): the difference between them was not significant. Cultivation of peas using biologized technology is the most cost-effective. Concurrently, the cost of grain varied from 4,563 to 5,705 rubles/ha, the profit per 1 ha was 10,307–13,754 rubles/ha, the profitability of production was 81–119% (average over 3 years, 105%), while it was 21-83% (average 57%)for intensive technology.","PeriodicalId":23563,"journal":{"name":"Vestnik of Ulyanovsk state agricultural academy","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82318311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"STUDY OF THE CELLULOLYTIC ACTIVITY OF A COLLECTION OF \"FIELD\" BACTERIAL CULTURES","authors":"P. Maiorov, N. Feoktistova, E. Lyashenko, E. Suldina","doi":"10.18286/1816-4501-2022-4-124-128","DOIUrl":"https://doi.org/10.18286/1816-4501-2022-4-124-128","url":null,"abstract":"Decomposition of organic substances is widespread in all types of soils and plays an important role in the carbon cycle. The decomposition of cellulose plays a special role, since cellulose is the most common polysaccharide in plant residues and can be used by new plants in the form of simpler compounds. At the same time, the rate of decomposition of plant residues in the soil takes a considerable time and largely depends on the type of soil and its microbial composition. The use of individual most active microorganisms in the composition of biological products can increase soil fertility, especially in those areas where the original composition of the microflora does not contribute to the active decomposition of plant residues. In this study, the cellulolytic activity of various strains of microorganisms isolated from the soil was studied and compared. The objects of the study were a collection of 56 strains. The study of cellulolytic activity was carried out on nutrient media containing a cellulose source using congo dye ed. The obtained results showed a different level of cellulolytic activity in the studied strains. In some cases, there was an increase in activity with a decrease in the number of bacterial cells. 18 of 56 strains demonstrated cellulose degradation only within the limits of bacterial colony growth. According to the results of the studies, 6 strains of microorganisms with the largest zone of cellulolytic activity, reaching a radius of 15 mm around the grown colony, were noted. Among the most active strains, only one was Gram-negative bacteria, while the rest were gram-positive microorganisms.","PeriodicalId":23563,"journal":{"name":"Vestnik of Ulyanovsk state agricultural academy","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86840739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"STUDY OF PATHOGENICITY OF FIELD STRAINS OF XANTHOMONAS CAMPESTRIS BACTERIA","authors":"P. Maiorov, N. Feoktistova, E. Suldina, V.S. Khaisanova","doi":"10.18286/1816-4501-2022-4-129-132","DOIUrl":"https://doi.org/10.18286/1816-4501-2022-4-129-132","url":null,"abstract":"Gram-negative bacterium Xanthomonas campestris, which is the causative agent of bacterial diseases of many cultivated plants, annually leads to significant economic losses in many sarans of the world. The development of modern methods of combating this phytopathogen is an urgent task for agriculture. One of the promising methods is the use of bacteriophages, the selection of which requires working directly with bacteria that have pathogenic properties in relation to natural host plants. This paper presents the results of studying the pathogenicity of the existing collection of microorganisms in relation to various varieties of cabbage. 38 strains of Xanthomonas campestris bacteria were used as the object of the study. The pathogenicity of the selected crops was studied by methods of studying hypersensitivity on tobacco plants and by infiltration into natural host plants. Studies have shown that the bacteria had varying degrees of activity in relation to cabbage varieties F1, Agamer 611 and Siberian 60. At the same time, 21 of the 38 strains studied showed their pathogenic properties on plants of all three varieties. In most cases, characteristic V-shaped lesions were found on the leaves of plants, which eventually led to the withering of the entire leaf. In some cases, necrosis was observed at the sites of inoculation of the studied strain of bacteria. Analysis of the time of manifestation of symptoms of bacteriosis showed that strains previously isolated from affected plants visually showed their pathogenic properties 5-6 days earlier than strains isolated from seed material. The obtained results will be used in the future to select bacteriophages with the greatest spectrum of action against bacteria with pathogenic properties.","PeriodicalId":23563,"journal":{"name":"Vestnik of Ulyanovsk state agricultural academy","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81479993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"RESEARCH OF A VIBRATORY ROLLER IN FIELD CONDITIONS","authors":"V. E. Proshkin, V. Kurdyumov, I. Sharonov, E. Zykin","doi":"10.18286/1816-4501-2022-4-162-167","DOIUrl":"https://doi.org/10.18286/1816-4501-2022-4-162-167","url":null,"abstract":"Post-sowing rolling is an essential operation for a good harvest, since it ensures fulfilment of basic agro-technical requirements such as soil density and structure. It should be noted that presently used soil-cultivating rollers do not ensure the fulfillment of agrotechnical requirements and, in addition, have a high specific metal content - more than 300 kg/m. Taking into account these disadvantages, a new design of the vibratory roller was developed, the metal consumption of which is 70 kg/m, which is significantly lower than the existing analogues. Moreover, it provides high-quality tillage due to vibration, and the tillage meets the basic agricultural requirements. As a result of studies of the vibratory roller on barley crops, it was revealed that the density of the soil corresponded to agrotechnical requirements and varied from 1182 kg/m3 to 1230 kg/m3, in contrast to KKZ-6, its density varied from 1098 kg/m3 to 1412 kg/m3. The studies of the structural composition of the soil showed that there were no lumps larger than 50 mm after passage of the vibratory roller, as far as KKZ-6 is concerned, there were, on average, from 10% to 20% of lumps that did not meet the agricultural requirements. As a result of high-quality tillage with a vibratory roller, it was possible to reduce the cost of fuel and lubricants as a result of weight decrease per 1 m of the working width in comparison with KKZ-6, (which was 270 kg/m), in addition it allowed to increase the yield of barley by an average of 35.7%.","PeriodicalId":23563,"journal":{"name":"Vestnik of Ulyanovsk state agricultural academy","volume":"347 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82981699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"INFLUENCE OF CYTRIMIN ON LEUKOCYTE FORMULA STRUCTURE OF FISH","authors":"T. Shlenkina, E. Romanova, V. Romanov, L. Shadyeva","doi":"10.18286/1816-4501-2022-4-156-161","DOIUrl":"https://doi.org/10.18286/1816-4501-2022-4-156-161","url":null,"abstract":"An obvious trend in domestic and foreign aquaculture in recent years is usage of biologically active substances of various mechanisms of action. It was clearly demonstrated that such biologically active substances as adaptogens, probiotics, vitamins, amino acids have a positive effect on the fish organism, increasing economic parameters of the industry. In particular, usage of \"Irkutin\" adaptogen in early ontogenesis of fish increased survivability of larvae during transition to exogenous nutrition, survivability of the fry, growth rate, endurance and it also reduced the level of cannibalism and stress. Therefore, the search for new substances with the properties of adaptogens for fish farming is of great importance. There is reason to believe that \"cytrimin\" can become such new substance. \"Cytrimin\" is a complex of tris-(2-hydroxyethyl) amine with zinc bis-(2-methylphenoxyacetate) and has the formula: (HOCH2CH2)3N Zn(OOCCH2OC6H4CH3-2)2. A study of the spectrum of physiological activity of \"cytrimin\" (one of the representatives of protatrans) showed that it protects blood vessels from formation of cholesterol plaques, it is also an antidote to alcohol and can increase performance, claiming to be an adaptogen. So far, \"cytrimin\" has not been used in fish farming. The aim of the work was to study the effect of \"cytrimin\" on parameters of blood system, in particular, on the structure of leukocyte formula of the African sharptooth catfish. It was found that there were no significant changes in the content of the total number of leukocytes in the blood of African catfish in case of \"cytrimin\" application, however, a redistribution of functionally different groups of cells in the leukogram of the African catfish was revealed. This redistribution was expressed in a slight decrease in the proportion of lymphocytes with a significant increase in the proportion of segmented neutrophils and monocytes within the physiological norm.","PeriodicalId":23563,"journal":{"name":"Vestnik of Ulyanovsk state agricultural academy","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85325337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}