Bulletin Samara State Agricultural Academy最新文献

{"title":"DETERMINATION OF RATIONAL METHOD OF HEATING OF MIXED MINERAL AND VEGETABLE FUELS FOR AUTOMOTIVE DIESEL ENGINES","authors":"О. С. Володько, O. Volodko, Александр Быченин, A. Bychenin, Олег Черников, O. Chernikov","doi":"10.12737/ARTICLE_5CDBC0E94CC1C9.07641574","DOIUrl":"https://doi.org/10.12737/ARTICLE_5CDBC0E94CC1C9.07641574","url":null,"abstract":"Research objective is to provide the set temperature condition of mixed mineral and vegetable fuel (MMVF). The use of fuel systems with smart heating will increase the volume of mineral diesel fuel, replaced by renewable re-sources. The technique and results of research of heating with external and internal supply of heat and also with hashing of the heated environment are given. Researches were conducted on specially developed laboratory in-stallation. MMVF on the basis of flax, soy and rape oils were investigated. Concentration of a vegetable component made 40% on volume. The 1000 W external heater and also the 1000, 500 and 300 W external heaters of all types were used. It is established that when heating MMVF the external source of warmth provides good heating on all volume without use of extra for mixing, overheating is 50% of necessary size. When leading warmth without hash-ing of MMVF warming up came from an internal source (the 1000 W heater) unevenly, the unevenness was 60%. When using mechanical mixing of MMVF with heating from an internal source of warmth the unevenness of warm-ing up was 3.1…4.65% depending on heater power. By results of a research it was established that when using the heater with a power of \u0000300 W when heating 1 liter of mixed mineral and vegetable fuel on the basis of rape oil with the maintenance of a vegetable component of 40% on volume time of heating to 60±2 °C was 230 s, the unevenness of heating was 3.1%, overheating was 3.1%. Recommendations about the most rational modes of heating of MMVF in a power supply system of the diesel are made.","PeriodicalId":393002,"journal":{"name":"Bulletin Samara State Agricultural Academy","volume":"147 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132800075","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":"EXPERIMENTAL DETERMINATION OF THE CHARACTERISTICS OF THE ROLLER BRAKE TESTER FOR RUNNING OF SMALL-BASED ENGINES OF AGRICULTURAL EQUIPMENT IN COLD REGIMES","authors":"Александр Иншаков, A. Inshakov, Дмитрий Владимирович Байков, D. Baykov, Иван Курбаков, I. Kurbakov, Михаил Голышев, Mikhail A. Golyshev","doi":"10.12737/ARTICLE_5CDBC0C24E6028.87827707","DOIUrl":"https://doi.org/10.12737/ARTICLE_5CDBC0C24E6028.87827707","url":null,"abstract":"The research aim is to determine the function of the tester for running internal combustion engines of mobile agri-cultural machinery of low power. To this goal, it was proposed to run the engines of small-scale mechanization on the previously developed specialized rolling-brake tester, consisting of an asynchronous electric machine with a phase rotor connected to a three-phase electrical network and a matrix frequency. Converter included in the three-phase electrical network and consisting of nine bidirectional transistor keys, which receive signals of space-vector control from the automatic control system, associated with testing measuring equipment based on a personal com-puter. To establish the actual characteristics of the developed tester, the requirements for technical means for run-ning and of engines of small-sized agricultural machinery were formulated and trials were carried out. The experi-mental characterization was carried out in various modes, and a diesel engine F. GREENFIELD GF178 was used as a trial. The limitations of the tester in the field of setting the rotational speed for stepless and step-by-step change in the speed mode of the cold running of the engine of small-scale mechanization from 30 to 3000 rpm (with a task step of 1 rpm) with the decompressor open and from 500 to 3000 rpm (with a task step of 1 rpm) – when closed. At the same time, the deviation in the maintenance of this speed mode was in the range from 0.2 to 3.3% and de-creased with the increase in the rotation rate. Designed tester enables you to make speedy modes cold running engines small agricultural machinery power class 0.1 and 0.2 when it was created and technical service.","PeriodicalId":393002,"journal":{"name":"Bulletin Samara State Agricultural Academy","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121864751","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":"PRODUCTIVE AND BIOLOGICAL TRAITS OF YOUNGS DIFFERENT GENOTYPES OF KAZAKH WHITE-HEADED BREED","authors":"Асемгул Бактыгалиева, A. Baktygalieva, Киниспай Джуламанов, K. Dzhulamanov, Андрей Ухтверов, A. Uhtverov, Н.В. Герасимов, N. Gerasimov","doi":"10.12737/ARTICLE_5CDE37815507C1.77338365","DOIUrl":"https://doi.org/10.12737/ARTICLE_5CDE37815507C1.77338365","url":null,"abstract":"The research aim is increasing the potential of meat productivity of young Shagatay Zavodska type of livestock based on a heterogeneous selection of Shagatay cows with bulls – Ural type of hereford. The experience carried out on the breeding farm «Sabit» in West Kazakhstan region according to the scheme: group 1 – bull, group 2 – castrated males, group 3 – heifers of Shagatay breed of Kazakh white cattle and hybrids from crossing Shagatay cows with bulls of Ural Hereford, group 4 – bulls, 5 group – castrated males, 6 group – heifers. Groups were formed on the principle of analogues of 12 animals. Bulls by the age of 15 months of the Ural hereford reached the highest body weight and surpassed shagatai peers taking into account this selection feature in regard to sex by 20.4 kg. In castrates at the age of 18 months, this difference was in favor of the youngsters of group 5 and was 23.0 kg. Heter-ogeneous selection had a positive impact on the important productive qualities by heifers. Youngsters of group 6, born due to servicing bulls of the Ural Hereford, dominated in weight in regard to all analyzed periods. The contents of lizo the meyerhold centre in both winter and summer was greater at animal – hybrids of the Ural hereford and Shagatay animals, winter amount was 0,45-0,94 µg/ml in the summer – from 0.06 to 1.97 µg/ml. Significantly lower bactericidal activity of blood serum and slightly increased amount of lysozyme was shown by hybrids from the Ural hereford in the winter. Regardless of gender, the greatest consumption of both protein (8-41 g) and energy (0.48-2.54 MJ) per unit of body weight gained was characterized by descendants from parents of the Shagatai type of Ka-zakh white-headed breed. Hybrids the offspring of the Ural hereford – used crude protein in feeding more often for the synthesis of dietary protein.","PeriodicalId":393002,"journal":{"name":"Bulletin Samara State Agricultural Academy","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121162422","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 MAIN SOIL TREATMENT ON MICROBIOTA AND BARLEY PRODUCTIVITY IN THE CONDITIONS OF CENTRAL VOLGA AREA","authors":"Галина Марковская, G. Markovskaya, Ольга Викторовна Чугунова, O. Chugunova","doi":"10.12737/ARTICLE_5CDBC442E01672.39268090","DOIUrl":"https://doi.org/10.12737/ARTICLE_5CDBC442E01672.39268090","url":null,"abstract":"The researches are targeted at the efficiency increase of summer barley by application of various ways of soil main processing, in the conditions of insufficient moistening of Central Volga area. Researches were conducted in two the five-field crop rotations on pilot fields of «Agriculture, Soil Science, Agro Chemistry and Land Registry» depart-ment of the Samara GSHA in 2005-2008. The following options of soil main processing were studied: plowing on depth of \u000020-22 cm; loosening on 10-12 cm; zero processing. Average samples during three stages were investigated from the pilot field of all options of soil processing in triple frequency: in a phase of shoots, heading and after harvesting. Samples taken from various depths: 0-5, 5-10, 10-20 and 20-30 cm, were crushed and sifted. Assessment of total number and ratio of main groups of microorganisms in the soil were carried out by method of microbiological seed-ing of soil mixture on solid nutrient mediums. Content seeding was sterilized in the autoclave. Bacterial inoculation was made on the meat-peptonny agar (MPA), actinomycetes – on the starch-and ammonia agar (SAA), micromy-cetes – on Czapek's. The productivity of summer barley was determined by the mechanized method with regard to area. Soil microbiocenosis change under the influence of various ways of processing was considered. As a result of the conducted researches influence of the fallow tillage on productivity of barley is noted. Barley used with green manured fallow for seeding increases its productivity by 5.5%. Its influence on the general biogennost of the soil is noted. The traditional processing of the soil had no significant effect on productivity of the studied culture.","PeriodicalId":393002,"journal":{"name":"Bulletin Samara State Agricultural Academy","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128458460","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":"ULTRASOUND: ADVANTAGE FOR APPLICATION AND TECHNICAL MEANS","authors":"Юлия Викторовна Уханова, Yuliya Ukhanova, Наталья Владимировна Перова, N. Perova, Александр Уханов, A. Ukhanov","doi":"10.12737/ARTICLE_5CDBC0D6ED3685.21192547","DOIUrl":"https://doi.org/10.12737/ARTICLE_5CDBC0D6ED3685.21192547","url":null,"abstract":"The purpose of research is to evaluate the effectiveness of ultrasound for the treatment of components of diesel mixed fuel (DMF).Ultrasonic vibrations can change the aggregate state of a substance, disperse, emulsify it, change the rate of diffusion, crystallization and dissolution of substances, activate chemical reactions, intensify technological processes. The use of ultrasonic vibrations in the treatment of liquid media gives them new proper-ties, which lead to the widespread use of ultrasound in various industrial processes. Currently, biological fuels are widely used as motor fuel in diesel engines of automotive engineering. One of the types of liquid biological fuels is diesel mixed fuel (DMF), the components of which are commercial oil diesel fuel and any vegetable oil produced from oilseeds (canola, ginger, oil radish, flax oil, wood, white mustard, soybean, Abyssinian crab, etc.). For the mix-ing of oil and vegetable components directly «on Board» of automotive equipment, static mixers are usually used, which do not fully provide high-quality mixing of components and processing of DMF by ultrasound. The ultrasonic mixer developed and manufactured by the authors due to high-frequency oscillations of the piezoe mitter allows not only to mix biological and oil components of the mixed fuel qualitatively, but also to process them by ultrasound with a radiation frequency of \u000025 kHz to obtain a homogeneous fine composition, which leads to a smaller decrease in engine power and a smaller increase in the specific effective consumption of the mixed fuel compared to the operation of the diesel on the untreated ultrasound mixed fuel.","PeriodicalId":393002,"journal":{"name":"Bulletin Samara State Agricultural Academy","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122805094","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":"EFFECTS OF WEATHER AND AGRICULTURAL TECHNIQUES ON RIPENING OF SPRING DURUM WHEAT IN THE ORENBURG PRIURALIYE","authors":"Ишен Бесалиев, I. Besaliev, Александр Панфилов, A. Panfilov","doi":"10.12737/ARTICLE_5CDE3F166C81D4.85950952","DOIUrl":"https://doi.org/10.12737/ARTICLE_5CDE3F166C81D4.85950952","url":null,"abstract":"The aim of the study is to increase the yield of spring durum wheat in the Orenburg Urals. Spring hard wheat makes more demands on the temperature region during the formation and filling of grain. Due to the growing aridity conditions of the second half of the growing season, when the grain falls asleep, have become more unfavorable. As you know, the nature of the filling, favorable weather conditions in this period are determined by the yield and quality of grain. The studies were carried out in 2016-2018 in the Central zone of the Orenburg region on chernozems ordinary in two stages of the main tillage. Weather conditions contrasted sharply. The research method is a field experiment. Experience and research were conducted according to conventional methods. Analysis of the grain samples was performed using a laboratory balance Adam NSV 602N and furnace SESH-3M. Mathematical analysis was performed in the program Statistica 6.0. It is established that the duration of grain loading in the study area depends on the weather conditions of the year, ranging from 20-21 days to 31 days. The growth rate of dry matter accumulation in durum wheat grain is observed in the air temperature range 18.7-26.2°C, followed by an increase in temperature reduces the increase. Amid the subsurface processing plowed fields, reducing grain moisture is less intense: 10 grade Orenburg-plowing is of 0.99 – 2.46% on a day, subsurface tillage-0.80 – 2.50% daily; cultivar bezenchukskaya 210 – plowing 1.64-of 2.34%, subsurface tillage-1.03-2.32%.","PeriodicalId":393002,"journal":{"name":"Bulletin Samara State Agricultural Academy","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124386402","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":"PRODUCTIVE MOISTURE IN CONNECTION WITH THE AGRONOMIC PRACTICES AND YIELD OF SPRING DURUM WHEAT IN THE ORENBURG PRIURALYE","authors":"Ишен Бесалиев, I. Besaliev, Александр Панфилов, A. Panfilov","doi":"10.12737/ARTICLE_5CDBC13A4BCF29.98849140","DOIUrl":"https://doi.org/10.12737/ARTICLE_5CDBC13A4BCF29.98849140","url":null,"abstract":"The article is published on the topic of the state assignment 0761-2019-0004. \u0000The purpose of research – increasing the yield of durum spring wheat in the conditions of Orenburg-tion of the Urals. Due to the increase in aridity of the climate, there is a lack of productive moisture in the soil, which creates sharply unfavorable conditions for the formation of the crop against the background of rising air temperature. The research method is a field experiment. Field experiments were carried out in the conditions of the Central zone of the Orenburg region in the zone of southern chernozems. Two methods of the main tillage – plowing, soil loosening to a depth of 25-27 cm and the background without the main soil formation-were studied. The experiments are laid in accordance with the requirements of the field research methodology. The left soil moisture was determined by the weight method, the calculation of correlation relations – with the use of the program Statistica 6.0. It is established that the yield of the studied crop has no reliable connection with the reserves of productive moisture to sowing in the soil horizons of 0-30 cm and 30-60 cm and is correlated with their amount in the horizon of 60-100 cm and in the meter (0-100 cm) horizon. In the earing phase, the content of useful moisture in both the sowing (0-30 cm), the main root (30-60 cm) and deeper layers of soil (60-100 cm), as well as its amount in the meter horizon is positively associated with the yield of spring durum wheat. Correlation ratios correspondingly on horizons make 0,743; 0,801; 0,954; 0,828, i.e. after earing the role of the moisture containing below a half-meter layer of the soil increases. The most important for the formation of the harvest of spring durum wheat is the accumulation of productive moisture in the soil horizons 30-60 cm and below. Loose soil loosening contributes to better penetration of moisture into the subsurface layers of the soil and increase its reserves.","PeriodicalId":393002,"journal":{"name":"Bulletin Samara State Agricultural Academy","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127747258","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":"THE RESULTS OF PRODUCTIVITY STUDY OF DIFFERENT SAMPLES OF ALFALFA CHANGEABLE (MEDICAGO VARIA MARTYN) IN THE CONDITIONS OF THE MIDDLE VOLGA REGION","authors":"Ирина Володина, I. Volodina","doi":"10.12737/ARTICLE_5CDBC10ED121D3.18530779","DOIUrl":"https://doi.org/10.12737/ARTICLE_5CDBC10ED121D3.18530779","url":null,"abstract":"The aim of the research was to increased fodder and seed productivity of variable alfalfa (Medicago varia Martin) in the middle Volga region. The results of the researches made during the period 2012-2014 for incorporated 13 vari-ety samples of alfalfa changeable in the nursery of competitive trials are provided. The most promising population demonstrated economically valuable traits in previous years, from various nurseries of the study were used. Popu-lation was created by the polikross. Weather conditions analysis of the region allows us to conclude that over the \u00002012-2014 they met the requirements needed for the studied culture, providing a sufficiently high potential of productivity, but the limiting factor for the formation of the vegetative mass of alfalfa is the level of moisture. The data on the possibility of obtaining seeds in the year of sowing in the climatic conditions of the Middle Volga region un-der the condition of early sowing (until 10-12 may) are confirmed. Seed yields in 2012 ranged from 24.7 to 47.8 g/m2. It was found that in different years of moisture supply, taking into regard the conditions of the region, all the studied samples form 2 full-fledged mowing per season. All studied samples can be characterized as highly pro-ductive by vegetative mass and seeds. The dry matter accumulation in the estimated samples in the first mowing of 2013 was \u00000.65-0.68 kg/m2, in the second – 0.38-0.86 kg/m2. In arid 2013, the highest yield of seeds was obtained \u0000337.5-494.7 g/m2. In 2014, the yield of dry matter both mowing was approximately equivalent 0,56-0,79 kg/m2 and 0.54-0.97 kg/m2 respectively, the average for the samples is 0.66 kg/m2 in the first mowing and 0.67 kg/m2 in the second. The yield of seed populations in 2014 ranged from 22.9 to 55.8 g/m2. All studied samples can be charac-terized as highly productive for the accumulation of dry matter and seed yield.","PeriodicalId":393002,"journal":{"name":"Bulletin Samara State Agricultural Academy","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131006131","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 SINGLE AND MIXED CROPS OF PERMANENT GRASS ON SOIL ENZYMIC ACTIVITY IN THE CONDITIONS OF FOREST-STEPPE OF THE MIDDLE VOLGA REGION","authors":"Галина Марковская, G. Markovskaya, С. Д. Гусева, S. Guseva","doi":"10.12737/ARTICLE_5CDBC12353B663.24196889","DOIUrl":"https://doi.org/10.12737/ARTICLE_5CDBC12353B663.24196889","url":null,"abstract":"The research is aimed at the development of effective methods to restore soil fertility under intensive agrogenic loads. The studies were conducted in the fields of the Department of Plant Cultivation and Agriculture from 2016 to 2018. The following variants of single-species and mixed crops of perennial grasses were studied: 1. awnless brome; 2. crested wheat grass; 3. awnless brome + smooth brome; 4. crested wheat grass + Agropyron; 5 awnless brome + smooth brome + Hungarian sainfoin; 6. crested wheat grass + Agropyron + Hungarian sainfoin. Medium soil samples were taken from the experimental field from all variants of single-species and mixed crops of perennial grasses in triplicate in three periods: beginning, middle, and end of the growing season. Samples were taken from depth of \u00000-20 cm and 20-40 cm. Bacteria number was assessed by sowing special soil mixture on the solid sterile MPA media according to the method of J. Sega. Enzyme activity was determined by the method of A. Sh. Galstyan. When studying the activity of PPO, a high activity of this enzyme was observed in the soil layer of 20-40 cm. The analysis of the activity of the enzyme peroxidase has various indicators both between the studied variants and in the soil section. The high activity of the enzymes was noted in the variants «awnless brome + smooth brome» and «crested wheat grass + Agropyron + Hungarian sainfoin». In the process of research, a correlation was found between peroxidase activity and the number of bacteria. The highest coefficient of humification was noted in the «awnless brome», the lowest – «crested wheat grass + Agropyron + Hungarian sainfoin». From 2016 to 2018, in the first variant, a decrease in the coefficient of humification is observed. Thus, of the above options, with the optimal species composition, the following options turned out to be: « awnless brome», «awnless brome +smooth brome», «awnless brome +smooth brome + Hungarian sainfoin». Research data were processed by the dispersion method.","PeriodicalId":393002,"journal":{"name":"Bulletin Samara State Agricultural Academy","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122965218","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":"USE OF SELECTION INDICES IN BREEDING WORK","authors":"Игорь Николаевич Ефимов, I. N. Efimov, Татьяна Усова, T. Usova, Ольга Юдина, O. Yudina","doi":"10.12737/27846/","DOIUrl":"https://doi.org/10.12737/27846/","url":null,"abstract":"The aim of the study is to develop an effective selective index adapted to the conditions of the country, taking into account the national priorities of consumption of livestock products. Selection indices, which are widely used in de-veloped countries with high scientific and production potential in the field of animal husbandry, have been ana-lyzed. They can be divided into three groups. The first group includes five countries where a simplified version of the calculation of selective indices is used. The second group includes nine countries, which are rather complex for on-line analysis of the selection indices. The third group included countries in the breeding work of which com-bined breeding indices are used. The rating of the most valuable bulls of the Federal state unitary enterprise «Mos-kovskoye» on breeding work made with application of the most widespread selection indexes is given. Selection indices, with the similarity of the methods of their calculation, need some adjustment to be used in our country. A selection index is developed and presented under the name UI (combined index). The developed index UI in 83% of cases coincides with the index ASI (Australia), in the remaining 17% of cases the difference does not exceed 0.5 rank. With the index PIN (England) differences are more significant, in 34% of cases there is a complete coinci-dence of estimates, in 50% – the differences are only 1 rank and only in one case the discrepancy is significant enough. The index of INET (the most frequently used by breeders in Europe) coincides with the evaluation of breeding value of animals in 100% of cases. The new index is supposed to be used in the work with dairy breeds.","PeriodicalId":393002,"journal":{"name":"Bulletin Samara State Agricultural Academy","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128108597","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}