UKRAINIAN BLACK SEA REGION AGRARIAN SCIENCE最新文献

{"title":"Influence of Lactation Number, Year and Season of Calving on Milk Productivity of Cows","authors":"O. Kramarenko, S. Kramarenko","doi":"10.56407/313-092x/2022-26(2)-5","DOIUrl":"https://doi.org/10.56407/313-092x/2022-26(2)-5","url":null,"abstract":"The main characteristics of the milk productivity of Holstein dairy cattle differ in different countries due to differences in terrain, management and breeding objectives. At the same time, the manifestation of non-genetic (that is, environmental) factors during milk production, as a rule, mask the real breeding value of animals. The main goal of this study was to analyze the influence of lactation number, year and season of calving on the milk productivity of 238 Holstein cows during a 4-year period (2014-2017). The study was conducted using primary data on the dairy productivity of livestock in the conditions of PJSC Plemzavod Stepnoi of the Kamian-Dnipro district of the Zaporizhia region.The following characteristics were evaluated for each animal: duration of lactation, hope for 305 days of lactation, hope for the entire lactation, fat content and protein content in milk. P. Wood's model was used to approximate lactation curves within each subgroup. All signs of milk productivity were analyzed based on the algorithm of one- or two-factor analysis of variance with fixed factors using the statistical package STATISTICA v. 6.0 (Statsoft Inc.).Lactation number was found to have a significant effect on all milk yield traits that were examined (in all cases: p<0.001). Hope for 305 days of lactation increased with the growth of lactation number. The highest values of this characteristic were noted during the 2nd and 3rd lactations. The lowest estimate of milk yield for 305 days of lactation of dairy cows of this farm was obtained in 2014, and the highest in 2016. The calving season probably influenced the indicators of milk productivity (primarily, the content of fat and protein in milk) of firstborns. In addition, the milk yield score at 305 days of lactation was lower among winter- or spring-calved gilts compared to fall-calved animals. No influence of the calving season was noted among adult cows. Lactation number and year of calving probably influenced the estimates of the coefficients and parameters of P. Wood's model. The shape of the lactation curves of firstborns was flatter compared to mature cows. Estimates of peak milk yield were lower, but the index of constancy of the lactation curve was higher during the 1st lactation. Thus, we found that obtaining real (unbiased) estimates of milk productivity traits of Holstein cattle requires preliminary adjustment of data regarding the influence of lactation number, year and season of calving","PeriodicalId":166850,"journal":{"name":"UKRAINIAN BLACK SEA REGION AGRARIAN SCIENCE","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125898245","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":"Advantages of hybrid mobile applications and progressive web apps for entrepreneurs","authors":"T. Moroz, V. Endres","doi":"10.31521/2313-092x/2019-1(101)-14","DOIUrl":"https://doi.org/10.31521/2313-092x/2019-1(101)-14","url":null,"abstract":"","PeriodicalId":166850,"journal":{"name":"UKRAINIAN BLACK SEA REGION AGRARIAN SCIENCE","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122337124","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":"Contemporary Agro-ecological and Forestry Technical Characteristics of the Field Forest Protection in the Plain-Steppe Territory of Kherson Region","authors":"L. Strelchuk, kherson state agrarian universiry","doi":"10.31521/2313-092x/2019-3(103)-9","DOIUrl":"https://doi.org/10.31521/2313-092x/2019-3(103)-9","url":null,"abstract":"У статті наведено результати багаторічних польових досліджень, проведених в умовах Херсонської області на польових площах рівнинно-степового масиву з визначенням основних характеристик складу, функціональної конструкції та наявного стану польових захисних лісосмуг. У результаті проведення маршрутних обстежень встановлено, що існуючі полезахисні лісонасадження у розрізі районів демонструють значну різницю в сумарних площах, віковій і видовій структурі та рівнях деструкційних порушень, які визначаються як соціально-економічним станом населення, заходами охорони та відновлення лісосмуг, так і природно-кліматичними умовами середовища.","PeriodicalId":166850,"journal":{"name":"UKRAINIAN BLACK SEA REGION AGRARIAN SCIENCE","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126839573","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":"Efficiency of seed production in the context of development of the southern region of Ukraine","authors":"O. Novikov, N. Potryvaieva, N. Sharata, M. Korkhova, A. Chernova, M. Karpenko","doi":"10.31521/2313-092x/2021-4(112)-2","DOIUrl":"https://doi.org/10.31521/2313-092x/2021-4(112)-2","url":null,"abstract":"The article presents the results of the analysis of the need to establish and operate the Center for the production of basic and certified seeds of new varieties of basic cereals in conditions of natural and artificial moisture on the basis of the Training-Scientific-Practical Center of MNAU. The implementation of the project will promote the development of domestic seed production, providing agricultural producers with high-quality sowing material of new varieties, as well as improving the quality of education during the training of specialists in agronomy. Key words: seed production, grain crops, varieties, irrigation, economic efficiency, project.","PeriodicalId":166850,"journal":{"name":"UKRAINIAN BLACK SEA REGION AGRARIAN SCIENCE","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126612388","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":"Prospects for increasing energy autonomy of the agriculture in accordance with the energy strategy of Ukraine","authors":"G. Kaletnyk","doi":"10.31521/2313-092x/2019-4(104)-10","DOIUrl":"https://doi.org/10.31521/2313-092x/2019-4(104)-10","url":null,"abstract":"","PeriodicalId":166850,"journal":{"name":"UKRAINIAN BLACK SEA REGION AGRARIAN SCIENCE","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127365516","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":"IMPLEMENTATION OF THE ECONOMIC MODEL OF CLOSED-LOOP IN THE MYKOLAIV REGION","authors":"I. Honcharenko","doi":"10.31521/2313-092X/2019-1(101)-1","DOIUrl":"https://doi.org/10.31521/2313-092X/2019-1(101)-1","url":null,"abstract":"","PeriodicalId":166850,"journal":{"name":"UKRAINIAN BLACK SEA REGION AGRARIAN SCIENCE","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130650349","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":"Evaluation of the role of intellectual capital in innovative economic growth in the framework of knowledge economy","authors":"H. Rahimli","doi":"10.31521/2313-092x/2021-2(110)-14","DOIUrl":"https://doi.org/10.31521/2313-092x/2021-2(110)-14","url":null,"abstract":"H. Rahimli. Evaluation of the role of intellectual capital in innovative economic growth in the framework of knowledge economy The COVID – 19 pandemic has had and continues to have a profound effect on all areas of our lives. One of the main areas affected by the pandemic is agriculture. The article emphasizes the need to apply science-intensive technologies and expand innovative activities to ensure sustainable development of agriculture in the current pandemic. The importance of new generation technologies in accelerating the innovative development of the agricultural sector is also studied. Positive results have been obtained on issues that need to be solved when organizing and developing an economy based on an innovation system in the agricultural sector in a pandemic. Keywords: agricultural sector, innovation, COVID-19 pandemic, entrepreneurship, digital transformation, economic activity.","PeriodicalId":166850,"journal":{"name":"UKRAINIAN BLACK SEA REGION AGRARIAN SCIENCE","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132778851","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":"Improving the cultivation of corn hybrids under irrigation in the South of Ukraine","authors":"R. Vozhehova, Ya.V. Belov","doi":"10.31521/2313-092x/2019-2(102)-6","DOIUrl":"https://doi.org/10.31521/2313-092x/2019-2(102)-6","url":null,"abstract":"","PeriodicalId":166850,"journal":{"name":"UKRAINIAN BLACK SEA REGION AGRARIAN SCIENCE","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131973340","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":"Factors, that influence labor productivity based on ensuring the opportunities for human development","authors":"I. Krylova, H. Kovalenko, I. Potochylova","doi":"10.31521/2313-092x/2019-1(101)-4","DOIUrl":"https://doi.org/10.31521/2313-092x/2019-1(101)-4","url":null,"abstract":"","PeriodicalId":166850,"journal":{"name":"UKRAINIAN BLACK SEA REGION AGRARIAN SCIENCE","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133806847","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":"Integrated Assessment of Weldability of Steel with Increased Strength","authors":"O. Kostin, V. Martynenko, L. Vakhonina","doi":"10.56407/2313-092x/2022-26(2)-1","DOIUrl":"https://doi.org/10.56407/2313-092x/2022-26(2)-1","url":null,"abstract":"Modern production of agricultural equipment and facilities, hulls of ships, stationary oil drilling platforms, wind energy installations and other metal structures makes extensive use of sheet steel of increased strength. The main manufacturing process is welding, the quality of which depends on multiple factors, including the ability of steel to resist welding. It is known that the properties of the thermal influence zone are highly dependent on phase transformations, the nature of which is determined by the intensity and development of diffusion processes of carbon redistribution and alloying elements under the impact of the welding thermal cycle. Therefore, it is necessary to evaluate the weldability of the steel of a certain chemical composition, in order to choose the optimal method and the technological parameters of the welding mode for the manufacture of a specific metal structure. In order to reduce material costs, you can use analytical calculation methods that were developed at the E.O. Paton Electric Welding Institute. They are based on the analysis of the literature and the study of about 150 diagrams of the thermokinetic decomposition of austenite. Mathematical models make it possible to predict with a sufficient degree of accuracy the phase composition and mechanical properties of the high-temperature thermal influence zone depending on the chemical composition and cooling time of the metal, heated to a maximum temperature of 1350ºC, in the temperature range 850-500ºC. However, such tests are quite expensive and do not allow optimization of weld properties when the welding mode, mode, welding materials and other underlying technological factors change. In this connection, the objective was to assess the reliability of the proposed methodology in the study of weldability of shipbuilding steel of the increased strength of the category E36, for the weakest T(transverse) – the orientation of the sheet of 50 mm thickness. A high performance of the steel category is achieved by a limited increase in the aluminium content or other grain-crushing elements (Nb, V, Ti), which ensures that the size of the austenitic grain is not greater than the fifth point. The research showed that analytical methods for calculating the mechanical characteristics of high temperature HAZ sites by chemical composition, taking into account the cooling rate after welding, provide a level of confidence sufficient for practical application and can be recommended for the primary evaluation of the properties of welded compounds of high-thickness steel plates of category E36 (T-orientation). The impact work (KV-40) of the high-temperature sections of the high-temperature thermal influence zone is not subject to an analytical evaluation with the degree of accuracy required for production practice","PeriodicalId":166850,"journal":{"name":"UKRAINIAN BLACK SEA REGION AGRARIAN SCIENCE","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117269272","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}