Don state agrarian University
Author list of organization
List of articles written by the authors of the organization
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OPTIMIZATION TECHNIQUES FOR PCRRFLP FOR GENOTYPING SHEEP
06.00.00 Agricultural sciences
DescriptionDiagnosis by PCR-RFLP (polymerase chain reaction – polymorphism of the lengths of restriction fragments) is the standard analysis of point mutations for the diagnosis of allelic polymorphism of candidate genes related with productive qualities of farm animals. Along the length of the fragments (RFLP) make a conclusion about the absence or presence of the point mutation, and homozygosity or heterozygosity of the individual. The aim of our work was the optimization of protocols for conducting PCR-RFLP analysis for genotyping sheep for genes of the growth hormone gene differential growth factor and gene of calpastatin
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PRODUCTIVITY INDICES OF MEAT PIGS USING THE "VITA SELENIUM" AND "TOPINAMBUR" AT CULTIVATION
06.00.00 Agricultural sciences
DescriptionStudies were conducted on pure-bred pigs CT and DM-1. Determine the productivity of meat quality, thickness and quality of the bacon, the physicochemical quality of meat, histostructure longissimus dorsi experienced pigs fattened using dietary supplements
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06.00.00 Agricultural sciences
DescriptionStudies were conducted on pure-bred pigs CT and DM-1. An analysis of variance of economically useful signs and interior indicators pigs using dietary supplements "Vita selenium" and "Jerusalem artichoke"
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Description
The article discusses different types of drive axles of all-wheel drive machine. It is shown that if blocked drive of driving axle easy, it is able to provide the best traction drive qualities of the all-wheel car, if compensation of kinematic mismatch in movement of front and rear wheels. The article provides analysis of the causes of kinematic mismatch and its consequences. The analysis was given for the existing methods to reduce negative influence of kinematic discrepancy on the work of the four-wheel drive wheeled machine in locked mode. The method of reduction of kinematic mismatch by regulations of the air pressure in the tires of the wheels with one-time control of the leading moments on the axes was suggested. We show the relationship between the difference of kinematic radii of the wheels of different axles and the difference of the moments leading to them. The algorithm and description for the system of automatic control of air pressure in the tire, which realizes the proposed method, were presented. We have described experimental methods of determining the energy losses evaluation from kinematic mismatch when moving all-wheel drive machine. The article presents the results of the this assessment in relation to the agricultural wheel tractor of class 5 moving at different substructures
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COMPATIBILITY OF VARIOUS DOSES OF ECOVENTURA AND LIMESTONE IN FEEDING OF REPLACEMENT YOUNG DUCKS
06.00.00 Agricultural sciences
DescriptionThe research is aimed at studying the compatibility of different doses of ecoventura (TU 9283-199- 10514645-13) and limestone in the diets of rearing of ducks of "Blagovarsky" cross and the impact on productive performance. As a result of scientific and economic experience obtained data on the dynamics of live weight in groups of rearing ducks indicate that ecomentors in combination with limestone have a growth promoting effect and a positive effect on the growth of ducklings. Best growth depending on dose administration of ecoventura and limestone in feed composition had a rearing ducks III (ecomentors (1,0%) + limestone (3,0%) by weight of the feed) and IV experimental groups (ecomentors (1,0%) + limestone (3,5%) by weight of the feed). The results of the study measurements (body length, keel length, breast width, chest girth, chest depth) and indices stature (massiveness, the meat content, arizonia), which were higher in males and females when fed with mixed fodder with the introduction of ecoventura and limestone in an amount of 1.0 and 3.5% respectively. Introduction to feed composition of ecoventura and limestone in an amount of 1.0 and 3.5%, respectively had a positive impact on exterior indicators of rearing ducks
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MODELING REGIONAL SYSTEMS OF BREEDING PIGS
06.00.00 Agricultural sciences
DescriptionThe article contains the experience of the development of the methodology and the computer program for calculation of regional and local systems of pigs hybridization at the example of the Rostov region (Russia). Crossing the GP lines for F1 should be organized in multiplier farm, which may be separate farms and to be part of large commercial farms. For the production of F1 in a multiplier farm, we must breed a purebred specialized paternal and a maternal line, selected on the effect of combining ability. For the successful functioning of the system of hybridization, it is necessary to build a genetic pyramid, including breeding and genetic centers (nucleus farm), multiplier farm, reproducing the baseline. The article gives a detailed calculation of sow population of levels of P, GP, GGP for maternal and paternal breeds of pigs. The program uses user-defined parameters of pigs productivity, of the simulated population, and the parameters characterizing the intensity of selection of young animals. To ensure annual production of 1,822 million pigs in the Rostov region it is necessary to provide the availability of brood stock in the amount of 89 thousand heads, 6 800 heads in the structure of grandparent flocks (GP), 730 heads in the structure of the Grand-Grand-parent stock (GGP), excluding sows second maternal and paternal breeds
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ORGANIZATIONAL-ECONOMIC ASPECTS OF INCREASED ACTIVITY OF SMALL AGRIBUSINESSES
DescriptionThe development of the agricultural sector involves the increasing entrepreneurial activity of small agribusiness in the conditions of the market. This requires the formation of the organizationaleconomic mechanism. It acts as a system of relations arising between the state and the entities. One of the basic conditions in the solution of this problem is state support of small agribusiness at various levels. In addition, it is necessary to create a better organizational-economic mechanism of development of this type of business in the agricultural sector, which is aimed at creating and strengthening the competitive environment of agricultural producers. This article discusses the main directions of formation of the elements of the organizational-economic mechanism of development of small agribusiness in the proletarian district of Rostov region. In the area gets the development of competitive selection of farmers for the development of the agribusiness in animal husbandry. It helps to increase the livestock of farm animals in peasant (farm) area. The creation of a wholesaledistribution center on the basis of the agricultural consumer co-operative will contribute to the development of marketing infrastructure, primary processing, storage and transportation of agricultural products produced by small businesses in the area. The organizers of the marketing and logistics chain, which are wholesale distribution centres not only provides the most efficient distribution of the produced agricultural products, but also allows in General to increase the activity of the small agribusiness
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Description
Plowing is the main and most energy-intensive way of primary tillage. The development and the introduction of the energy-saving ways of the primary tillage are of great scientific and practical interest. In the Azov-Black Engineering Institute, we have developed a combined method of the tillage and a tool using left-hand blades designed to handle the lower layers of the soil. The tool is designed for a layered tillage providing moldboard shallow and mouldboardless shallow (12 ... 18 cm) subsurface tillage using the cropping and the offset of the lower layer of soil in the direction of the daylight surface. The installation of the left-hand blades is designed to decrease the energy intensity of the technological process by reducing the weight of soil treated by the plow body. The aim of this study is to compare the energy assessment of the three ways of the tillage: - Plowing without skimmers; - Plowing with coulters being at the wall of the furrow; - Plowing with a left-hand blades tool. The study has been carried out using a graphical simulation of the shifting of the center of gravity of the soil layer. The assessment of the energy intensity of the technological process has been carried out by the capacity value consumed to shift the center of gravity of the treated layer of soil at the different depths of the tillage. The results of the study have showed that the change of the total quantity of the shifting of the center of gravity of the treated soil layer ranges from 0.43 ... to 0.67 m in respect of the two first-mentioned ways of plowing, while the same index in respect of the combined tool ranges from 0.37 ...to 0.55 m. The maximum power consumption of the process is also higher in respect of the two first-mentioned ways of the tillage. The power required to shift the center of gravity of the treated layer in respect of both ways ranges from 0.6 ... to 2.0 kW. , while the same index in respect of the combined method of tillage ranges from 0.3 ... to 0.9 kW
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THE INFLUENCE OF GENOTYPE OF RAMS ON THE QUALITATIVE CHARACTERISTICS OF MEAT
06.00.00 Agricultural sciences
DescriptionThe article presents the results of the qualitative assessment of meat of crossbred rams. The analysis of the data shows that crossbred rams of 2, 3 and 4 groups increased the absolute mass of muscle tissue compared with purebred 12.3; of 18.2 and 25.6%, respectively. Fine-wooled rams were superior in the relative content of bone in carcasses of crossbred 1.1- 4.2 percent. Output of pulp for 1 kg of bones had the advantage of crossbred rams 2, 3 and 4 groups compared with purebred 0.12; 0.24 percent and 0.44 kg respectively. The analysis of the data shows that in carcasses of young animals of all the groups the greatest specific weight took cuts of the 1st sort. Nevertheless, the valuable parts to carcass weight balance was higher in the carcasses of the crossbred calves. So, rams 2, 3 and 4 groups, this advantage was 1.9; 4.5 and 4.7%, respectively. Thus, the analysis of a complex of indicators characterizing the quality of meat rams of different genotypes revealed that the superiority for the studied indices took place for two - and three-bred animals. These options of both simple and complex industrial crossing are promising and can be implemented and used in the farms of Merino and crossbred sheep
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Description
Industrial region passport is a comprehensive information tool for forming the sustainable consistent conception about the industrial economic sector of administrative territorial unit for third-party users. This content is being formed by taking into account following elements: maximum completeness of the provided information, minimization of the facts distortion and empirical data; simplicity and clarity of the data provided in an accessible form with informative and illustrative material; classifier by potential users’ interests’ availability. In the article, exemplary structure of the industrial passport according to the developed requirements is proposed. In addition, the formation of a working group in the structure of economy sector government bodies is proposed; its tasks include organization and carrying out the relevant works. The article describes a proposed phased-gradualist procedure for creating the industrial passport of the area or district. The developed industrial passport can be used: in the investors attraction activities to the regions with an industrial orientation of the economy; within industrial exhibitions, convents and conferences conducting; as a tool for operational diagnosing a certain industrial potential; as a tool for information accumulating for comparative analysis of the industrial sector functioning in the territorial and temporal dimension; among with other complex tools for the area investment attractiveness increase; as a reasoning element for project platforms necessary for the cluster forms of industrial production organization