Scientific Journal of KubSAU

Polythematic online scientific journal
of Kuban State Agrarian University
ISSN 1990-4665
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396 kb

OPTIMIZATION OF THE RELATION OF BIOLOGICALLY ACTIVE SUBSTANCES AND PROBIOTIC MICROFLORA IN THE RECIPE OF COMPLEX FEED CONCENTRATE

abstract 1481904032 issue 148 pp. 0 – 0 30.04.2019 ru 77
Providing the population with basic foodstuffs, sources of proteins, fats, carbohydrates, vitamins and other essential nutrients is one of the main issues of ensuring the security of the country, while the requirement for food safety is paramount. Production of feed additives (concentrates), which improve feed conversion, while being natural and safe for animal health, acquires the greatest importance in the conditions of intensification of agriculture and increasing the competitiveness of livestock farms. Probiotic microflora, which, in competition with pathogenic, displaces the latter from the gastrointestinal tract, can be considered as one of the effective methods of controlling undesirable microflora in the digestive tract. In world science, research is actively conducted in the direction of searching for effective probiotic cultures. A promising way to increase the effectiveness of the use of probiotic feed additives is their addition to prebiotics, for example, including vitamins (antioxidants) and mineral substances (selenium). The purpose of this work was to determine the optimal ratio of biologically active substances contained in the feed vitamin-mineral concentrate, and probiotic microflora contained in the feed probiotic additive Bacell-M, for the development of complex feed concentrate. Using the Harrington's desirability function, the optimum ratio of biologically active substances and probiotic microflora in the recipe of the complex feed concentrate is determined, ensuring the maximum reduction in the serum levels of alanine aminotransferase in the blood serum of experimental animals, which characterizes the normalization of barrier organs
377 kb

NEED OF DAIRY CATTLE IN ESSENTIAL AMINO ACIDS

abstract 1481904033 issue 148 pp. 0 – 0 30.04.2019 ru 95
The article presents a factorial model for determining the needs of lactating cows in essential amino acids. The algorithm of the model uses fragments from the NRC – 2001 models [39], CNCPS – 200 [60], and research materials published in the world literature. Instead of the transformation coefficients of the metabolizable lysine and methionine for milk production equal to 0.85 and 1.00, respectively, by the CNCPS, the coefficients 0.68 and 0.66 were used according to Doepel et al., 2004 [49] and the authors' own data [69]. Norms obtained using this model in lysine and methionine in milk production and maintenance in percentage of metabolizable protein (MP) were 7.28 and 2.4%, which is identical to the NRC – 2001 standards, equal to 7.2 and 2.4 % respectively, obtained by dose – response method based on dozens of experiments. The norm of histidine was 3.5%, which closely corresponds to the indicator of 2.4 and 2.7 % MP [74], obtained by the incremental addition method. This indicates that the presented model is distinguished by sufficiently high accuracy and is comparable with the models developed by the dose – response method. However, the determination of the need of cows for amino acids in this model is much less expensive than the dose – response method. The need for the absolute amount of metabolizable essential amino acids (MEAA) for milk production (35 kg/d, yield milk protein 1103 gytt6) and maintenance cow - 600 kg, g/d: lysine - 178, methionine - 59, arginine - 119, histidine - 60, isoleucine - 138, leucine - 248, phenylalanine - 152, threonine - 134, tryptophan - 38, valine - 174; the need for only milk production, g/d: 130; 42; 81; 42; 95; 175; 98; 74; 25; 112; the need for only maintenance, g/d: 50; 16; 38; 20; 43; 73; 54; 60; 14; 64; the need for 1 kg of milk (31.5 g of protein) g/kg: 3.7; 1.2; 2.3; 1.2; 2.7; 5.0; 2.8; 2.1; 0.7; 3.2; need to maintain, g / kg 0.75: 0.41; 0.14; 0.31; 0.16; 0.35; 0.60; 0.44; 0.50; 0.11; 0.53. In addition, the article presents the norms of amino acids per 1 kg of dry matter (DM) ration. However, the proposed standards need a comprehensive assessment in the research and practice of dairy farming. Research is needed to improve the models and predict the MEAA in the rations in the following areas: studying the metabolism of amino acids in the body of cows and determining their costs for maintaining the digestive tract, tissues and organs, refining, on this basis, the utilization of amino acids for milk protein production and maintenance; the development of ideal amino-acid profile of low-protein diets, both due to the adjustment of natural ingredients, and through the use of amino acid preparations that are protected from disintegration in the rumen
376 kb

THE SIMULATION EXPERIENCE OF THE WORKING BODIES OF THE EQUIPMENT FOR AGRICULTURAL PURPOSES USING METHODS OF ENGINEERING GEOMETRY AND COMPUTER GRAPHICS

abstract 1471903001 issue 147 pp. 0 – 0 29.03.2019 ru 47
The article presents the results of the research on modeling of working bodies of agricultural equipment by methods of engineering geometry and computer graphics. The design and the principle of operation of the equipment on the basis of working bodies in the form of screw drums is shown on the example of a device for the preparation of concentrated feed
782 kb

METHODS AND RESULTS OF THE SEED MATERIAL FRICTION COEFFICIENT DETERMINING USING AN AUTOMATED DEVICE

abstract 1471903004 issue 147 pp. 0 – 0 29.03.2019 ru 66
The article describes the automated method of friction coefficient determination of row crops seeds using different types of surface, including modern polymer and composite materials. It is revealed that the friction coefficient characterizes the friction properties of seeds arising in the process of mechanical action during harvesting, transportation, storage and processing, as well as changes over time depending on the state of the surfaces, contact time, humidity, relative velocity and other parameters. The problem of lack of friction coefficients values for rest and dynamic friction coefficients for the polymeric and composite materials which are actively applied today at industrial production of agricultural machinery is designated. The design and general view of the device which helps to determine friction coefficient excluding the human factor (operator error) are presented. The operation principle of the developed device is described and the processing method of experimental data is given. Experimental data were obtained and statistical processing was carried out to identify the static and dynamic friction coefficients of seeds. Integral ( ) and differential ( ) graph for the distribution of friction coefficient average values for pairs "type of seed material – type of friction surface" are constructed
246 kb

ASSESSMENT OF THREATS TO THE VASCULAR PLANT DIVERSITY OF NATURAL COMMUNITIES AND OF REINEKE ISLAND FROM THE ALIEN SPECIES CENTAUREA JACEA L. (ASTERAСЕАЕ) (VLADIVOSTOK, PRIMORSKII KRAI, PETER THE GREAT BAY, SEA OF JAPAN)

abstract 1471903011 issue 147 pp. 0 – 0 29.03.2019 ru 25
In Reineke Island (Primorskii Krai, Vladivostok, Peter the Great Bay, Sea of Japan) alien species for Russia’s Far East Centaurea jacea L. (Asteraсеае) were first discovered in the 1980th in a small amount. Now, 40 years later distribution of C. jacea is limited to small sites of secondary grass meadows and disturbed habitats of roadsides unpaved roads for approximately 0.03% of the island; the level of its invasive activity is low; C. jacea threats currently is not for the biodiversity of plant community and forage value of meadows
228 kb

THE EFFECT OF FOLIAR TREATMENTS WITH MINERAL FERTILIZERS ON THE YIELD AND BIOMETRIC INDICATORS OF CUTTINGS

abstract 1471903012 issue 147 pp. 0 – 0 29.03.2019 ru 41
In this article, the influence of foliar treatments with complex fertilizers (Polimiks-agro, Sprühdünger 2) and a growth regulator (SeaweedMix) in the cultivation of rootstocks and seedlings given the concentration of drugs and phase of plant development. The positive effect of fertilizer "Polimix-agro" on physiological processes in plants of SC2U apple rootstock in the formation of adaptive resistance to abiotic stresses of the summer period, where the best water-holding capacity of the leaves than in the control. It was found that a single non-root feeding in the uterine growth regulator called SeaweedMix when reaching rootstocks height of 10-15 cm, allows to increase the yield by increasing the growth activity, increase the standard of layering with a decrease in the number of lateral branches, as well as 3-fold non-root fertilizing fertilizer Sprühdunger 2 provided an increase in the quality of rootstocks on the diameter of the trunk and height
199 kb

MAGNETIC PROFILES OF KUBAN SOILS OF VARIOUS AGRICULTURAL USE

abstract 1471903013 issue 147 pp. 0 – 0 29.03.2019 ru 19
The article discusses the change in the magnetic properties of soils of different agricultural use, depending on the conditions of soil formation. The objects of study are leached chernozem of Western Ciscaucasia, meadow chernozem and meadow bog soils of rice agrolandscapes. The results showed that with an increase in the degree of hydromorphism, the magnitude of the magnetic susceptibility of the soil decreases. The leached chernozem has the highest magnetization of the profile. In soils formed under the influence of hydromorphic soil formation, magnetic susceptibility is reduced by 3.0-3.5 times in rainfed conditions and deposits, and by 6.0-12.0 times in soils of rice agrocenoses
125 kb

INFLUENCE OF FERTILIZERS ON QUALITY OF CHARDONNAY GRAPES AND WINE MATERIALS

abstract 1471903014 issue 147 pp. 0 – 0 29.03.2019 ru 38
The article presents the results of the fertilizers use effect on dry wine materials produced from the Chardonnay variety, grown in the Anapo-Taman soil and climatic zone of the Krasnodar region, Russia. As a result of wine materials analysis, increase of tartaric acid was noted, with the autumn application of phosphorus-potassium fertilizers and the spring application of ammonium nitrate. At the same time, its optimum content was noted with nitroammophos. Also, the minimum concentration of malic acids was detected by the application of nitroammophos with potassium fertilizers. In its turn, early spring application of ammonium nitrate reduced the concentration of malic acid below the control sample (without fertilizers). It was revealed that the use of mineral fertilizers in this winemaking zone also contributed to a reduction of lactic acid in the must. At the same time, the application of nitroammophos (especially together with other mineral fertilizers), contributed to the accumulation of citric and succinic acids, as well as phenolic compounds. Moreover, the application of phosphate-potassium fertilizers in the autumn contributed to the accumulation, and, consequently, also to the increase in the content of phenolic compounds in the resulting must. In addition, the studied samples of wine materials contained high alcohol concentrations and low concentrations of sugars with volatile acids. At the same time, the maximum amount of alcohol exceeding its content in the control sample was revealed when phosphorus-potassium fertilizers were used together with nitroammophos fertilizers. It is also noted that the application of ammonium nitrate did not affect this indicator. As a result, the use of mineral fertilizers in the studied concentrations made it possible to prepare wine materials that contained a low concentration of sulfur dioxide, which is substantially lower than the harmful concentration for humans. In addition, increased concentrations of hydrogen ions in variants with the application of phosphate-potassium fertilizers have made it possible to reduce the number of iron tanates and the intensity of oxidation-reduction processes
11882 kb

SYSTEMIC COGNITIVE MODELING OF THE INFLUENCE OF AGRICULTURAL TECHNOLOGIES ON YIELD AND QUALITY OF WHEAT AND THE SOLUTION OF TASKS OF FORECASTING, DECISION SUPPORT AND RESEARCH OF THE SUBJECT AREA

abstract 1471903015 issue 147 pp. 0 – 0 29.03.2019 ru 28
The purpose of the article is to use automated system-cognitive analysis (ASC-analysis) to study the impact of agrotechnological factors on the yield and quality of wheat and the use of the created models to solve the problems of forecasting, decision support and research of the simulated domain through the study of its model. To achieve this goal, the following tasks are set and solved, obtained by decomposition of the goal and are the stages of its achievement: Task 1: to formulate the idea and concept of solving the problem; Task 2: to justify the choice of method and tool for solving the problem; Task 3: to apply the selected method and tool to achieve this goal: cognitive structuring of the subject area; formalization of the subject area; synthesis and verification of the model; improving the quality of the model and the choice of the most reliable model; solution in the most reliable model of diagnostic problems (classification, recognition, identification), decision support and research of the simulated subject area by studying its model. Task 4: describe the effectiveness of the proposed solution. Task 5: to consider the limitations and shortcomings of the proposed solution to the problem and the prospects for its development by overcoming these limitations and shortcomings. A detailed numerical example of solving the problems based on 217 real examples of wheat cultivation in the fields of the Krasnodar region is given. For readers, it is possible to download this numerical example and install it on your computer to study
120 kb

FEATURES OF THE ECOLOGY OF DRAINED SOILS OF DIFFERENT ECONOMIC USE

abstract 1471903016 issue 147 pp. 0 – 0 29.03.2019 ru 53
Slicesize soil is a kind of degradation of its changes. They are characterized by high density, hardness and other characteristics that reduce their effective fertility. Many authors have noted the progression of the process of fusion, which is associated with global warming, with over – compaction due to the unjustifiably frequent use of heavy equipment, irrigation-that is, with the direct impact of abiotic and anthropogenic factors on the pedosphere. Economic use – the strongest anthropogenic factor capable to bring the debugged mechanism of functioning of system out of action if not to observe scientifically-proved rules of agrotechnics. As a result of such intervention, the ecosystem is unable to independently neutralize negative deviations (consequences of anthropogenic impact) from the natural course of the processes of exchange of matter and energy. Therefore, the structure of agrocenoses should be as close as possible to the structure of natural biocenoses, namely: as fertilizers use more organic (manure, green fertilizers); to minimize the mechanical impact on the soil during its processing; to avoid such irrigation regime, which involves excessive soil moisture and its complete drying
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