Pub Date : 2022-05-04DOI: 10.29235/1817-7204-2022-60-2-243-256
C. Zhdanovich, V. N. Plishch
Rubber reinforced tracks and cushion suspension are becoming increasingly common on agricultural tractors. They increase environmental friendliness, provide asphalt driving ability and allow for higher transport speed of crawler tractors, improving working conditions for the tractor driver. The crawler tracks of these thrusters have a high degree of suppleness, so a loss of stability of the rubber reinforced track on the drive wheel can be a problem when operating under high traction loads. The most effective measure to increase the stability of the rim in the mover is to increase the pre-static tension. However, high track tension increases losses in the undercarriage and stresses the undercarriage, resulting in reduced undercarriage life and loss of performance. Analytical dependencies are derived to determine the rational pre-static tension of rubber reinforced crawler tractors with cushion and blocked suspensions during start of moving and moving modes. The required static pre-tensioning of rubber reinforced tracks for Belarus 1802, 2102 and 2103 tractors is determined. It has been found that the greatest necessary static pre-tensioning of the rubber reinforced tracks is required at the maximum forces on the driving wheels of the tractor. It is shown that locking the suspension when operating the tractor with high traction loads at low speed allows to reduce the required static pre-tensioning of rubber reinforced tracks and, as a consequence, their loading. The results of this research can be used in design and operation of tractors with rubber reinforced tracks.
{"title":"Selecting pre-tensioning of rubber reinforced track on agricultural tractor with cushion suspension","authors":"C. Zhdanovich, V. N. Plishch","doi":"10.29235/1817-7204-2022-60-2-243-256","DOIUrl":"https://doi.org/10.29235/1817-7204-2022-60-2-243-256","url":null,"abstract":"Rubber reinforced tracks and cushion suspension are becoming increasingly common on agricultural tractors. They increase environmental friendliness, provide asphalt driving ability and allow for higher transport speed of crawler tractors, improving working conditions for the tractor driver. The crawler tracks of these thrusters have a high degree of suppleness, so a loss of stability of the rubber reinforced track on the drive wheel can be a problem when operating under high traction loads. The most effective measure to increase the stability of the rim in the mover is to increase the pre-static tension. However, high track tension increases losses in the undercarriage and stresses the undercarriage, resulting in reduced undercarriage life and loss of performance. Analytical dependencies are derived to determine the rational pre-static tension of rubber reinforced crawler tractors with cushion and blocked suspensions during start of moving and moving modes. The required static pre-tensioning of rubber reinforced tracks for Belarus 1802, 2102 and 2103 tractors is determined. It has been found that the greatest necessary static pre-tensioning of the rubber reinforced tracks is required at the maximum forces on the driving wheels of the tractor. It is shown that locking the suspension when operating the tractor with high traction loads at low speed allows to reduce the required static pre-tensioning of rubber reinforced tracks and, as a consequence, their loading. The results of this research can be used in design and operation of tractors with rubber reinforced tracks. ","PeriodicalId":41146,"journal":{"name":"Proceedings of the National Academy of Sciences of Belarus-Agrarian Series","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2022-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89387326","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}
Pub Date : 2022-05-04DOI: 10.29235/1817-7204-2022-60-2-182-194
H. M. Pashkevich, A. Tchaikovsky, Z. Rupasova, T. Vasilevskaya, N. B. Krinitckaya, V. S. Zadala
In recent years, there has been a steady increase in public interest in healthy and balanced foods all over the world. In this respect, the microgreens of white cabbage is a source of a wide range of useful substances and is characterized by a higher content of those, compared with a similar commercial vegetable. At the same time, information about technological aspects of cultivation, which relate to the duration of lighting, about their correlation with biochemical composition of microgreens of industrial varieties and hybrids of this crop is insufficient and is limited to a very narrow set of their parameters. For this reason, it is of particular relevance to identify the optimal duration of LED lighting in the white cabbage microgreens crop, which ensures accumulation of the highest nutritional and vitamin value and determines the taste qualities of this product. The results of a comparative study of 14 quantitative parameters of biochemical composition of white cabbage microgreens (content of dry, tannic and pectin substances, free organic, ascorbic and hydroxycinnamic acids, soluble sugars, the main groups of bioflavonoids – i.e. anthocyanins, leucoanthocyanins, catechins, flavonols and the indicator of sugar acid index) with different duration of LED lighting are presented (8, 10, 12, 14 and 16 hours). The less significant effect of the studied factor on biochemical composition of microgreens was revealed at 10 hour exposure, while the maximum, exceeding it three times, was at 16 hour exposure. It has been shown that the highest integral level of nutritional and vitamin value of products according to the total analyzed indicators was provided at 16 hours of LED lighting, while the minimum – at 8 hours. For the first time in the Republic of Belarus, the optimal duration of LED lighting for the accumulation of physiologically valuable compounds by microgreens of white cabbage was revealed, which made it possible to recommend it to be used for industrial production.
{"title":"Effect of LED lighting duration on biochemical composition of microgreens of white cabbag","authors":"H. M. Pashkevich, A. Tchaikovsky, Z. Rupasova, T. Vasilevskaya, N. B. Krinitckaya, V. S. Zadala","doi":"10.29235/1817-7204-2022-60-2-182-194","DOIUrl":"https://doi.org/10.29235/1817-7204-2022-60-2-182-194","url":null,"abstract":"In recent years, there has been a steady increase in public interest in healthy and balanced foods all over the world. In this respect, the microgreens of white cabbage is a source of a wide range of useful substances and is characterized by a higher content of those, compared with a similar commercial vegetable. At the same time, information about technological aspects of cultivation, which relate to the duration of lighting, about their correlation with biochemical composition of microgreens of industrial varieties and hybrids of this crop is insufficient and is limited to a very narrow set of their parameters. For this reason, it is of particular relevance to identify the optimal duration of LED lighting in the white cabbage microgreens crop, which ensures accumulation of the highest nutritional and vitamin value and determines the taste qualities of this product. The results of a comparative study of 14 quantitative parameters of biochemical composition of white cabbage microgreens (content of dry, tannic and pectin substances, free organic, ascorbic and hydroxycinnamic acids, soluble sugars, the main groups of bioflavonoids – i.e. anthocyanins, leucoanthocyanins, catechins, flavonols and the indicator of sugar acid index) with different duration of LED lighting are presented (8, 10, 12, 14 and 16 hours). The less significant effect of the studied factor on biochemical composition of microgreens was revealed at 10 hour exposure, while the maximum, exceeding it three times, was at 16 hour exposure. It has been shown that the highest integral level of nutritional and vitamin value of products according to the total analyzed indicators was provided at 16 hours of LED lighting, while the minimum – at 8 hours. For the first time in the Republic of Belarus, the optimal duration of LED lighting for the accumulation of physiologically valuable compounds by microgreens of white cabbage was revealed, which made it possible to recommend it to be used for industrial production.","PeriodicalId":41146,"journal":{"name":"Proceedings of the National Academy of Sciences of Belarus-Agrarian Series","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2022-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80667464","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}
Pub Date : 2022-05-04DOI: 10.29235/1817-7204-2022-60-2-146-159
G. Ganush, V. Grigoryeva
Under conditions of modern transformations of social-and-economic processes in domestic and foreign markets a new architecture of marketing relations is being formed, characterizing the essence of marketing as a tool of economic development of the enterprise, including the agricultural sector. Therefore, consideration of characteristics of this model predetermines the methodological basis for development of a forward-looking management strategy for the organisation. The paper outlines the theoretical and applied foundations of the marketing approach to improving and increasing the quality of management in agricultural sector. Substantiation of relevancy of reorientation of management from the production dominant to the marketing dominant is presented, according to which business entities orient their production and sales activities to the real market demand, i.e. to satisfy the constantly growing and changing consumer demands. Transformation of principles, functions and methods of management are formed, as well as its content, that are adequate to the new (dominant) role of marketing, taking into account the predicted evolution of social, economic, institutional, ideological and moral foundations of human society. Based on the studies carried out, it was concluded that the practical implementation of new principles, methods and functions of management in the agricultural sector will be carried out mainly by ensuring the key role of scientific marketing in managing the adaptation of production and marketing of agricultural products, the structure and content of organizational and economic relations in the agro-industrial complex, processes of social rural development to modern and future economic conditions, reflecting in the aggregate innovative and market transformations in the economy and society. Economic, environmental and social advantages of adaptive farming systems based on the dialectical interaction of economic, natural and market factors of agricultural production have been substantiated. Priority directions for development of adaptive agro-ecosystems have been identified, with important place given to improve the specialization and diversification of production, development of organic technologies, production of meat products in accordance with the requirements of the Halal certificate, intended for the Muslim population. Proposals have been made to increase the level of marketing training based on improving the educational process and organizing consulting, disseminating advanced business practices.
{"title":"Current directions for increasing the role of marketing in qualitative improvement of agro management","authors":"G. Ganush, V. Grigoryeva","doi":"10.29235/1817-7204-2022-60-2-146-159","DOIUrl":"https://doi.org/10.29235/1817-7204-2022-60-2-146-159","url":null,"abstract":"Under conditions of modern transformations of social-and-economic processes in domestic and foreign markets a new architecture of marketing relations is being formed, characterizing the essence of marketing as a tool of economic development of the enterprise, including the agricultural sector. Therefore, consideration of characteristics of this model predetermines the methodological basis for development of a forward-looking management strategy for the organisation. The paper outlines the theoretical and applied foundations of the marketing approach to improving and increasing the quality of management in agricultural sector. Substantiation of relevancy of reorientation of management from the production dominant to the marketing dominant is presented, according to which business entities orient their production and sales activities to the real market demand, i.e. to satisfy the constantly growing and changing consumer demands. Transformation of principles, functions and methods of management are formed, as well as its content, that are adequate to the new (dominant) role of marketing, taking into account the predicted evolution of social, economic, institutional, ideological and moral foundations of human society. Based on the studies carried out, it was concluded that the practical implementation of new principles, methods and functions of management in the agricultural sector will be carried out mainly by ensuring the key role of scientific marketing in managing the adaptation of production and marketing of agricultural products, the structure and content of organizational and economic relations in the agro-industrial complex, processes of social rural development to modern and future economic conditions, reflecting in the aggregate innovative and market transformations in the economy and society. Economic, environmental and social advantages of adaptive farming systems based on the dialectical interaction of economic, natural and market factors of agricultural production have been substantiated. Priority directions for development of adaptive agro-ecosystems have been identified, with important place given to improve the specialization and diversification of production, development of organic technologies, production of meat products in accordance with the requirements of the Halal certificate, intended for the Muslim population. Proposals have been made to increase the level of marketing training based on improving the educational process and organizing consulting, disseminating advanced business practices.","PeriodicalId":41146,"journal":{"name":"Proceedings of the National Academy of Sciences of Belarus-Agrarian Series","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2022-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80313678","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}
Pub Date : 2022-05-04DOI: 10.29235/1817-7204-2022-60-2-195-212
S. Boika, Yu. I. Miakhtsiyeva, L. P. Vasileuskaya
Recently, in winter and spring grain crops for pre-sowing seed treatment among the assortment of insecticides the preparations of insecticidal and insectofungicidal action based on neonicotinoids: acetamiprid, imidacloprid, clothianidin and thiamethoxam have been widely used. At the current stage of chemical method development of plant protection against harmful arthropods, neonicotinoids are rapidly developing and promising group of neurotoxic insecticides and having a fundamentally different mechanism of action on insects – they inhibit nicotine-acetylcholine receptors. Pre-sowing seed material treatment with insecticides protects the sown seeds, hypocotyls and aboveground plant organs against soil and intrastem pests. It is revealed that during the growing seasons of 2019–2021 in the experimental field, economically significant phytophages are lined click beetle (Agriotes lineatus L.) and Frit flies of autumn and spring generations (Oscinella spp.), indicating the study of their larvae number and harmfulness and measures allowing to control the vital activity of insects in agrocenoses conditions. Plants damaged by them lag behind in growth and die. Improving the range of effective preparations with different active substances used by the method of pre-sowing treatment of grain crop seeds to protect plants during germination against phytophages is an obligatory link in the technology of crops cultivation and one of the factors of their number effective control, what has determined the relevance of the choice of our research topic. Pre-sowing winter and spring cereals seed treatment with neonicotinoid preparations based on imidacloprid (Coyote, SC, Sidoprid, FSC, Tabu, WSC), acetamiprid (Leatrin, SC, Bagrets Plus, SC, Vershina Plus, SC) and thiamethoxam (Questor Forte, SC) have provided plant seedlings high protection against click beetle and Frit fly larvae damage. The results of studies conducted in 2019–2021 have shown that the effectiveness of preparations have varied by years depending on weather conditions and pests number before sowing and at seedlings stage. The indicators of winter grain crops plant damage reduction by wireworms have made 78,8–91,1 %, Frit flies 60,0–85,0 %, spring cereals – 80,0–91,6 % and 80,7–91,1 %, respectively. Through years of research the insecticides for seed treatment have helped to increase the stored grain yield of cereal crops, on the average, from 0,7 to 6,2 cwt/ha, or 1,0–13,5 %. The data obtained will serve as a basis for justifying protective measures to reduce the number and harmfulness of soil-dwelling and terrestrial pests in order to improve the phytosanitary situation in the agrocenoses of cereals.
{"title":"Role of neonicotinoid preparations for spike grain crop seedlings protection against click beetle and Frit fly larvae in Belarus","authors":"S. Boika, Yu. I. Miakhtsiyeva, L. P. Vasileuskaya","doi":"10.29235/1817-7204-2022-60-2-195-212","DOIUrl":"https://doi.org/10.29235/1817-7204-2022-60-2-195-212","url":null,"abstract":"Recently, in winter and spring grain crops for pre-sowing seed treatment among the assortment of insecticides the preparations of insecticidal and insectofungicidal action based on neonicotinoids: acetamiprid, imidacloprid, clothianidin and thiamethoxam have been widely used. At the current stage of chemical method development of plant protection against harmful arthropods, neonicotinoids are rapidly developing and promising group of neurotoxic insecticides and having a fundamentally different mechanism of action on insects – they inhibit nicotine-acetylcholine receptors. Pre-sowing seed material treatment with insecticides protects the sown seeds, hypocotyls and aboveground plant organs against soil and intrastem pests. It is revealed that during the growing seasons of 2019–2021 in the experimental field, economically significant phytophages are lined click beetle (Agriotes lineatus L.) and Frit flies of autumn and spring generations (Oscinella spp.), indicating the study of their larvae number and harmfulness and measures allowing to control the vital activity of insects in agrocenoses conditions. Plants damaged by them lag behind in growth and die. Improving the range of effective preparations with different active substances used by the method of pre-sowing treatment of grain crop seeds to protect plants during germination against phytophages is an obligatory link in the technology of crops cultivation and one of the factors of their number effective control, what has determined the relevance of the choice of our research topic. Pre-sowing winter and spring cereals seed treatment with neonicotinoid preparations based on imidacloprid (Coyote, SC, Sidoprid, FSC, Tabu, WSC), acetamiprid (Leatrin, SC, Bagrets Plus, SC, Vershina Plus, SC) and thiamethoxam (Questor Forte, SC) have provided plant seedlings high protection against click beetle and Frit fly larvae damage. The results of studies conducted in 2019–2021 have shown that the effectiveness of preparations have varied by years depending on weather conditions and pests number before sowing and at seedlings stage. The indicators of winter grain crops plant damage reduction by wireworms have made 78,8–91,1 %, Frit flies 60,0–85,0 %, spring cereals – 80,0–91,6 % and 80,7–91,1 %, respectively. Through years of research the insecticides for seed treatment have helped to increase the stored grain yield of cereal crops, on the average, from 0,7 to 6,2 cwt/ha, or 1,0–13,5 %. The data obtained will serve as a basis for justifying protective measures to reduce the number and harmfulness of soil-dwelling and terrestrial pests in order to improve the phytosanitary situation in the agrocenoses of cereals.","PeriodicalId":41146,"journal":{"name":"Proceedings of the National Academy of Sciences of Belarus-Agrarian Series","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2022-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83231921","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}
Pub Date : 2022-05-04DOI: 10.29235/1817-7204-2022-60-2-223-233
A. I. Shamonina
There is no consensus among producers and agricultural practitioners as to which bedding material is the best. The choice is largely influenced by its useful properties, duration of use and high cost. Organic (straw, sawdust, wood shavings, peat, etc.), inorganic (sand) and synthetic (rubber mats; mattresses made of chopped rubber, latex, polyurethane foam lining, waterproof wax coating, etc.) materials are used for bedding. A significant part of agricultural organizations in Belarus uses winter straw. As a bedding material, it has a number of useful properties: low thermal conductivity, high moisture absorption capacity, low cost, and comfort for animals. According to the Republican standards for the technological design of new, reconstruction and technological re-equipment of livestock facilities (RNTD-1-2004), the standards for consumption of straw bedding for cows at loose housing on deep litter is 8 kg, but there are no input standards for sections with other technological solutions. The paper presents the results of studies to determine the optimal rate of straw bedding in sections with different technological solutions. Analysis of ethological reactions of animals, contamination of the skin, presence/absence of injuries on the body, temperature characteristics of the straw bedding in different seasons of the year and the economic efficiency of using different straw bedding rates has been performed. It has been determined that the optimal straw bedding rate for the general section is 4.5 kg/animal per day, for a section with a division into a feeding area and a rest area – 3.0 kg/animal per day. Application of these rates of straw bedding will enable it to be used economically without affecting the productivity and resting comfort of cows. The research results can be used in design and construction of industrial dairy complexes and storages for rough feeds.
{"title":"Substantiation of the optimal rate of straw bed in sections with different technological solution","authors":"A. I. Shamonina","doi":"10.29235/1817-7204-2022-60-2-223-233","DOIUrl":"https://doi.org/10.29235/1817-7204-2022-60-2-223-233","url":null,"abstract":"There is no consensus among producers and agricultural practitioners as to which bedding material is the best. The choice is largely influenced by its useful properties, duration of use and high cost. Organic (straw, sawdust, wood shavings, peat, etc.), inorganic (sand) and synthetic (rubber mats; mattresses made of chopped rubber, latex, polyurethane foam lining, waterproof wax coating, etc.) materials are used for bedding. A significant part of agricultural organizations in Belarus uses winter straw. As a bedding material, it has a number of useful properties: low thermal conductivity, high moisture absorption capacity, low cost, and comfort for animals. According to the Republican standards for the technological design of new, reconstruction and technological re-equipment of livestock facilities (RNTD-1-2004), the standards for consumption of straw bedding for cows at loose housing on deep litter is 8 kg, but there are no input standards for sections with other technological solutions. The paper presents the results of studies to determine the optimal rate of straw bedding in sections with different technological solutions. Analysis of ethological reactions of animals, contamination of the skin, presence/absence of injuries on the body, temperature characteristics of the straw bedding in different seasons of the year and the economic efficiency of using different straw bedding rates has been performed. It has been determined that the optimal straw bedding rate for the general section is 4.5 kg/animal per day, for a section with a division into a feeding area and a rest area – 3.0 kg/animal per day. Application of these rates of straw bedding will enable it to be used economically without affecting the productivity and resting comfort of cows. The research results can be used in design and construction of industrial dairy complexes and storages for rough feeds.","PeriodicalId":41146,"journal":{"name":"Proceedings of the National Academy of Sciences of Belarus-Agrarian Series","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2022-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84667276","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}
Pub Date : 2022-02-02DOI: 10.29235/1817-7204-2022-60-1-59-68
V. Pestis, N. Halko, I. M. Loikо, A. N. Krichevtsova
In the Republic of Belarus, as well as around the world, there is a continuous search for ways and methods of efficient struggle against the varroatous invasion of bees, however, no significant decisions are found in this struggle. In the context of this problem, scientific studies were conducted on development of modern technology of beekeeping on the background of spread varroatous invasion. Technological methods are proposed in the fight against varroatous invasion of bees, proving efficiency of the joint use of zoothechnical, biological and mechanical methods of combating the Varroa tick. It has been shown that purposeful rearing and selection of the drone brood reliably reduces the tick contamination of bee families by 5.7-17.4%. It has been substantiated that the use of intraulic pollen collector significantly reduces the number of ticks in the bees families, especially in the early spring period, when the ticks are mainly located on bees and are especially vulnerable to mechanical impact. The use of the feeding frame allows to purposefully obtain, conveniently and easily select the drone brood, and along with the drone brood, remove the Varroa tick form the bee nest. The use of the developed technology will allowed to reduce the number of tick, obtain additional products in the form of a homogenate of trutone larvae. Such system will increase the preservation of bee families, productivity of honey harvest and, as a result, increase the profitability of beekeeping production, as well as the effectiveness of pollination of entomophilic agricultural crops and their yield.
{"title":"Modern technologies for conducting beekeeping in the Republic of Belarus on the background of varroatous invasion","authors":"V. Pestis, N. Halko, I. M. Loikо, A. N. Krichevtsova","doi":"10.29235/1817-7204-2022-60-1-59-68","DOIUrl":"https://doi.org/10.29235/1817-7204-2022-60-1-59-68","url":null,"abstract":"In the Republic of Belarus, as well as around the world, there is a continuous search for ways and methods of efficient struggle against the varroatous invasion of bees, however, no significant decisions are found in this struggle. In the context of this problem, scientific studies were conducted on development of modern technology of beekeeping on the background of spread varroatous invasion. Technological methods are proposed in the fight against varroatous invasion of bees, proving efficiency of the joint use of zoothechnical, biological and mechanical methods of combating the Varroa tick. It has been shown that purposeful rearing and selection of the drone brood reliably reduces the tick contamination of bee families by 5.7-17.4%. It has been substantiated that the use of intraulic pollen collector significantly reduces the number of ticks in the bees families, especially in the early spring period, when the ticks are mainly located on bees and are especially vulnerable to mechanical impact. The use of the feeding frame allows to purposefully obtain, conveniently and easily select the drone brood, and along with the drone brood, remove the Varroa tick form the bee nest. The use of the developed technology will allowed to reduce the number of tick, obtain additional products in the form of a homogenate of trutone larvae. Such system will increase the preservation of bee families, productivity of honey harvest and, as a result, increase the profitability of beekeeping production, as well as the effectiveness of pollination of entomophilic agricultural crops and their yield.","PeriodicalId":41146,"journal":{"name":"Proceedings of the National Academy of Sciences of Belarus-Agrarian Series","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2022-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89923825","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}
Pub Date : 2022-02-02DOI: 10.29235/1817-7204-2022-60-1-105-113
N. Bakach, E. L. Zhilich, A. Kuvshinov, Y. Rogalskaya, V. Radchikov, А. A. Romanovich
In the market conditions of dairy cattle breeding, the problem of increasing productivity comes to the fore of cost-effective milk production. As best practices and zootechnical studies show, the productivity of cows is already laid at the level of raising calves of the dairy period. The main feed for calves of the dairy period is currently whole milk, but due to its deficiency, various substitutes based on skimmed milk powder with various additives of vitamins and trace elements are produced. However, due to high cost, the use of whole milk replacers has not been widely used. In this regard, to increase profitability of dairy cattle breeding, as well as for accelerated development, calves are accustomed to consuming vegetable feeds. Since plant-based feeds are difficult to digest in a young body, they must be processed into easily digestible. The paper presents an innovative technology and an automated set of equipment for production of easily digestible concentrate based on local grain raw materials for replacement young animals. It has been determined that the use of an innovative automated set of equipment for production of easily digestible concentrate for feeding calves of the dairy period contributes to: faster development of rumen, higher digestibility of grain components due to proper processing, since during preparation of the concentrate, protein denaturation, inactivation of anti-nutritional substances and starch hydrolysis to maltose occur; obtaining optimal weight gain of calves (over 700 g), which will lead to creation of a basis for future high milk productivity of cows; simplification of calf feeding technology; reducing the consumption of milk or whole milk replacer for feeding calves.
{"title":"In novative automated set of equipment for preparation of easily digestible concentrate","authors":"N. Bakach, E. L. Zhilich, A. Kuvshinov, Y. Rogalskaya, V. Radchikov, А. A. Romanovich","doi":"10.29235/1817-7204-2022-60-1-105-113","DOIUrl":"https://doi.org/10.29235/1817-7204-2022-60-1-105-113","url":null,"abstract":"In the market conditions of dairy cattle breeding, the problem of increasing productivity comes to the fore of cost-effective milk production. As best practices and zootechnical studies show, the productivity of cows is already laid at the level of raising calves of the dairy period. The main feed for calves of the dairy period is currently whole milk, but due to its deficiency, various substitutes based on skimmed milk powder with various additives of vitamins and trace elements are produced. However, due to high cost, the use of whole milk replacers has not been widely used. In this regard, to increase profitability of dairy cattle breeding, as well as for accelerated development, calves are accustomed to consuming vegetable feeds. Since plant-based feeds are difficult to digest in a young body, they must be processed into easily digestible. The paper presents an innovative technology and an automated set of equipment for production of easily digestible concentrate based on local grain raw materials for replacement young animals. It has been determined that the use of an innovative automated set of equipment for production of easily digestible concentrate for feeding calves of the dairy period contributes to: faster development of rumen, higher digestibility of grain components due to proper processing, since during preparation of the concentrate, protein denaturation, inactivation of anti-nutritional substances and starch hydrolysis to maltose occur; obtaining optimal weight gain of calves (over 700 g), which will lead to creation of a basis for future high milk productivity of cows; simplification of calf feeding technology; reducing the consumption of milk or whole milk replacer for feeding calves.","PeriodicalId":41146,"journal":{"name":"Proceedings of the National Academy of Sciences of Belarus-Agrarian Series","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2022-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89286604","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}
Pub Date : 2022-02-02DOI: 10.29235/1817-7204-2022-60-2-69-78
T. Suprovych, O. Biriukova, M. Suprovych, V. Chepurna, T. Karchevska, V. Kolodii, Y. Lesniak
The study of the genetic specificity of local breeds is a promising direction in the context of preserving the biodiversity of cattle breeds in the world. The purpose of research was to analyze the allelic polymorphism of the BoLA-DRB3 gene of the White-Headed Ukrainian breed. The study was carried out with blood samples from 49 animals (11 bulls and 38 cows) of this breed. The allelic spectrum of the BoLA-DRB3 gene was detected based on two-step PCR (primers HLO-30, HLO-31 and HLO-32). Restriction was performed with endonucleases RsaI, HaeIII, BstYI. Restriction fragments were separated by electrophoresis in 9-12 % polyacrylamide gel. According to the test results, 29 alleles were detected. Seven alleles (*03, *11, *13, *15, *22, *23 and *24) were determined with a frequency of over 5 %, that was 65.3 % of the allele pool of the breed. The most common was allele *24 with a frequency of 15.3%. In the experimental sample, 37 genotypes were identified. The predominant variant was *11/*24 (16.2%). A slight excess of heterozygotes was detected (Fis = – 0.035). White-Headed Ukrainian breed is characterized by a significant level of differentiation (or specificity) according to the BoLA-DRB3 gene (Wright fixation index He = 0.959, Shannon-Wiener index H` = 2.93), that confirms the thesis of the important role of local breeds in preserving the biodiversity of genetic resources of cattle.
{"title":"Genetic specificity of the white-headed ukrainian breed according to the BоLA-DRB3 gene","authors":"T. Suprovych, O. Biriukova, M. Suprovych, V. Chepurna, T. Karchevska, V. Kolodii, Y. Lesniak","doi":"10.29235/1817-7204-2022-60-2-69-78","DOIUrl":"https://doi.org/10.29235/1817-7204-2022-60-2-69-78","url":null,"abstract":"The study of the genetic specificity of local breeds is a promising direction in the context of preserving the biodiversity of cattle breeds in the world. The purpose of research was to analyze the allelic polymorphism of the BoLA-DRB3 gene of the White-Headed Ukrainian breed. The study was carried out with blood samples from 49 animals (11 bulls and 38 cows) of this breed. The allelic spectrum of the BoLA-DRB3 gene was detected based on two-step PCR (primers HLO-30, HLO-31 and HLO-32). Restriction was performed with endonucleases RsaI, HaeIII, BstYI. Restriction fragments were separated by electrophoresis in 9-12 % polyacrylamide gel. According to the test results, 29 alleles were detected. Seven alleles (*03, *11, *13, *15, *22, *23 and *24) were determined with a frequency of over 5 %, that was 65.3 % of the allele pool of the breed. The most common was allele *24 with a frequency of 15.3%. In the experimental sample, 37 genotypes were identified. The predominant variant was *11/*24 (16.2%). A slight excess of heterozygotes was detected (Fis = – 0.035). White-Headed Ukrainian breed is characterized by a significant level of differentiation (or specificity) according to the BoLA-DRB3 gene (Wright fixation index He = 0.959, Shannon-Wiener index H` = 2.93), that confirms the thesis of the important role of local breeds in preserving the biodiversity of genetic resources of cattle.","PeriodicalId":41146,"journal":{"name":"Proceedings of the National Academy of Sciences of Belarus-Agrarian Series","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2022-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89768190","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}
Pub Date : 2022-02-02DOI: 10.29235/1817-7204-2022-60-1-79-90
A. I. Shamonina
Technology should combine into a single production process biotechnical methods of stimulating the development of functional capabilities and increasing the adaptive abilities of animals with zootechnical techniques that provide comfortable conditions and preservation of the existing stereotype of housing throughout the entire technological cycle, which makes it possible to exclude unjustified losses in productivity and contributes to more complete manifestation of genetic potential. Therefore, search is required for such technological solutions that would not interfere with the animal body, but, on the contrary, would have a stimulating nature. At all stages of the productive life of animals, searches are needed to develop new and improve existing technologies that would best meet the physiological needs of the body. The paper presents the results of researches aimed to establish the optimal feeding front for lactating cows during the period of milk production and mid-lactation. It has been determined that comfortable ethological signs, expressed in the indices of food, motor and general activity, were manifested during the period of milk production in cows with a feeding front of 0.60-0.65 m/animal. These animals showed higher indicators of milk yield. For cows in the mid-lactation, the optimal feeding front was 0.45-0.50 m/animals. It allows to create more comfortable conditions for cows during the main lactation period, which contributes to more complete implementation of the genetic potential of dairy performance. The research results can be used in design and construction of industrial dairy complexes.
{"title":"Optimal rates for feeding front for cows during the milking and midlactation period when contained at dairy complexes of the industrial type","authors":"A. I. Shamonina","doi":"10.29235/1817-7204-2022-60-1-79-90","DOIUrl":"https://doi.org/10.29235/1817-7204-2022-60-1-79-90","url":null,"abstract":"Technology should combine into a single production process biotechnical methods of stimulating the development of functional capabilities and increasing the adaptive abilities of animals with zootechnical techniques that provide comfortable conditions and preservation of the existing stereotype of housing throughout the entire technological cycle, which makes it possible to exclude unjustified losses in productivity and contributes to more complete manifestation of genetic potential. Therefore, search is required for such technological solutions that would not interfere with the animal body, but, on the contrary, would have a stimulating nature. At all stages of the productive life of animals, searches are needed to develop new and improve existing technologies that would best meet the physiological needs of the body. The paper presents the results of researches aimed to establish the optimal feeding front for lactating cows during the period of milk production and mid-lactation. It has been determined that comfortable ethological signs, expressed in the indices of food, motor and general activity, were manifested during the period of milk production in cows with a feeding front of 0.60-0.65 m/animal. These animals showed higher indicators of milk yield. For cows in the mid-lactation, the optimal feeding front was 0.45-0.50 m/animals. It allows to create more comfortable conditions for cows during the main lactation period, which contributes to more complete implementation of the genetic potential of dairy performance. The research results can be used in design and construction of industrial dairy complexes.","PeriodicalId":41146,"journal":{"name":"Proceedings of the National Academy of Sciences of Belarus-Agrarian Series","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2022-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89854276","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}
Pub Date : 2022-02-02DOI: 10.29235/1817-7204-2022-60-1-91-104
С. Остренко, Елена Михайловна Колоскова, А. Езерский, А. Н. Овчарова, Н. В. Белова, Л. А. Ильина, Е. А. Йылдырым, Г. Ю. Лаптев, K. Ostrenko, E. Koloskova, Vadim A. Ezerskij, A. Ovcharova, Nadezhda V. Belova, Larisa A. Il, Elena A. Jyldyrym, G. Laptev
Health and productivity of ruminants directly depend on the state of rumen and digestion in intestinal tract. Normal microflora protects the body from pathogenic microbes, stimulates the immune system, participates in metabolic reactions and plays an important role in energy metabolism. Disturbance of species composition of microflora in rumen under effect of various factors leads to a state of dysbiosis, disorders of products digestibility, changes in enzymatic processes and other disorders. Biologically active substances of an adaptogenic nature can show immunomodulatory and antimicrobial activity. Adaptogen lithium ascorbate has stress-protective, neurotrophic, neuroprotective, antioxidant, immunomodulatory properties. In this paper, using molecular genetic methods, the effect of lithium ascorbate on composition of rumen microbiota of sheep was studied for the first time. Composition of microbiota was determined by NGS sequencing method. In total, 37 phylums, 76 classes, 98 orders, 225 families and 894 species of microorganisms were identified. It has been determined that introduction of lithium ascorbate at a dose of 10 mg/kg of body weight into the main diet of sheep contributed to increase in proportion of cellulolytic bacteria from 73.6±1.6% to 75.4±0.9% and over 40% decrease in total number of infusoria in rumen content. Cellulolytic activity of rumen fluid in sheep of the experimental group increased by 38% compared to the animals of the control group. The number of pathogenic bacteria decreased from 2.7% in sheep of the control group to 1.6% in animals of the experimental group, while the content of beneficial bacilli increased from 0.3% to 0.5%, respectively. Content of undesirable and conditionally pathogenic microflora decreased in the sheep of experimental group. The obtained data confirm positive effect of adaptogen lithium ascorbate, introduced into diet at a dosage of 10 mg/kg of body weight, on qualitative and quantitative composition of microbiota in sheep rumen. Therefore, lithium ascorbate, a broad-spectrum adaptogen, can be recommended as a feed additive to the main diet of sheep to improve rumen digestion and increase productivity.
{"title":"Effect of adaptogen lithium ascorbate on the microbiota of rumen in young ewes","authors":"С. Остренко, Елена Михайловна Колоскова, А. Езерский, А. Н. Овчарова, Н. В. Белова, Л. А. Ильина, Е. А. Йылдырым, Г. Ю. Лаптев, K. Ostrenko, E. Koloskova, Vadim A. Ezerskij, A. Ovcharova, Nadezhda V. Belova, Larisa A. Il, Elena A. Jyldyrym, G. Laptev","doi":"10.29235/1817-7204-2022-60-1-91-104","DOIUrl":"https://doi.org/10.29235/1817-7204-2022-60-1-91-104","url":null,"abstract":"Health and productivity of ruminants directly depend on the state of rumen and digestion in intestinal tract. Normal microflora protects the body from pathogenic microbes, stimulates the immune system, participates in metabolic reactions and plays an important role in energy metabolism. Disturbance of species composition of microflora in rumen under effect of various factors leads to a state of dysbiosis, disorders of products digestibility, changes in enzymatic processes and other disorders. Biologically active substances of an adaptogenic nature can show immunomodulatory and antimicrobial activity. Adaptogen lithium ascorbate has stress-protective, neurotrophic, neuroprotective, antioxidant, immunomodulatory properties. In this paper, using molecular genetic methods, the effect of lithium ascorbate on composition of rumen microbiota of sheep was studied for the first time. Composition of microbiota was determined by NGS sequencing method. In total, 37 phylums, 76 classes, 98 orders, 225 families and 894 species of microorganisms were identified. It has been determined that introduction of lithium ascorbate at a dose of 10 mg/kg of body weight into the main diet of sheep contributed to increase in proportion of cellulolytic bacteria from 73.6±1.6% to 75.4±0.9% and over 40% decrease in total number of infusoria in rumen content. Cellulolytic activity of rumen fluid in sheep of the experimental group increased by 38% compared to the animals of the control group. The number of pathogenic bacteria decreased from 2.7% in sheep of the control group to 1.6% in animals of the experimental group, while the content of beneficial bacilli increased from 0.3% to 0.5%, respectively. Content of undesirable and conditionally pathogenic microflora decreased in the sheep of experimental group. The obtained data confirm positive effect of adaptogen lithium ascorbate, introduced into diet at a dosage of 10 mg/kg of body weight, on qualitative and quantitative composition of microbiota in sheep rumen. Therefore, lithium ascorbate, a broad-spectrum adaptogen, can be recommended as a feed additive to the main diet of sheep to improve rumen digestion and increase productivity.","PeriodicalId":41146,"journal":{"name":"Proceedings of the National Academy of Sciences of Belarus-Agrarian Series","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2022-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74973307","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}
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