Naukovi gorizonti最新文献

{"title":"Creation and analysis of the starting material obtained by hybridisation of Triticum spelta L. × Triticum compactum Host.","authors":"Iryna Diordiieva, Valentin Kochmarskyi, Liudmila Riabovol, Iaroslav Riabovol, Svitlana Karychkovska","doi":"10.48077/scihor9.2023.110","DOIUrl":"https://doi.org/10.48077/scihor9.2023.110","url":null,"abstract":"In the conducted studies, as a result of the hybridisation of Triticum spelta L. × Triticum compactum Host. several new forms were obtained that differ in morphobiological and economically valuable traits. The research aims to expand the genetic diversity of spelt wheat and to obtain new introgressive forms with a high level of manifestation of economically valuable traits. The following methods were used: field, laboratory, hydrological analysis, and statistical analysis. As a result of the research, new source material was obtained and valuable genotypes with a unique combination of genetic material of the source species were identified. An intermediate type of inheritance of plant morphology traits (plant height, ear length and density, grain weight per ear) in F1 hybrids was established. In F2 hybrids, a split of 3:1, indicates the dominant monogenic nature of inheritance. The shape of the ear is inherited monogenically by the type of incomplete dominance. The analysis of transgressive variability in F3-4 hybrids Triticum spelta L. × Triticum compactum Host. shows that the highest proportion of positive transgressions was recorded for the number of spikelets (28.1-28.5%) and grains (23.4-51.0%) in the ear and grain weight per spikelet (20.3-32.1%). The analysis of stability and adaptability indices allowed us to distinguish line 201, characterised by high stability (S2 di=0.027), homeostasis (Hom=193.3) and breeding value (Sc=3.9), and line 206, combining high yield (5.11 t/ha) with high homeostasis (Hom=182.3) and breeding value (Sc=3.9). The introgressive hybridisation with Triticum compactum Host. identified new genetic sources characterised by the presence of deficient traits for breeding and of great practical importance for further breeding and genetic improvement of spelt, as they can enrich the existing gene pool of the crop","PeriodicalId":52817,"journal":{"name":"Naukovi gorizonti","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135937421","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":"Increased lactation in females due to the use of probiotic-based feed additives","authors":"Oksana Shkromada, Victoria Hrek, Oleksii Fotin, Roman Hrek, Valentina Rud","doi":"10.48077/scihor10.2023.09","DOIUrl":"https://doi.org/10.48077/scihor10.2023.09","url":null,"abstract":"The transition of females from childbirth to lactation is a physiologically complex period characterised by metabolic, endocrine and immunological changes. In addition, difficult labour drains the female and can lead to hypolactia. The purpose of the study was to determine the effect of probiotics on lactation recovery and metabolic changes in the body of females. Among the methods used are: the determination of lactation level, the physiological method for determining live weight, the biochemical method for blood testing; and the statistical method. The application of Bacillus subtilis AX 20, Bacillus licheniformis EA 22 contributes to an increase in milk productivity in cows on day 7-9 of the study by 12.9%, on day 10-12 – by 15.03%, on day 13-15 – by 13.93%, on day 16-18 – by 13.5% and on day 19-21 – by 21.35% compared to the control. The total protein content in experimental cows increased by 18.92%, globulins – by 37.26 (p≤0.05), compared to the initial indicators. The activity of alanine aminotransferase, urea, and urea nitrogen in animals of the control and experimental groups was within the normal range during the experiment. The application of Bacillus megaterium NCH 55 to sows with hypolactation contributes to lactation recovery in sows. In the experimental group, piglets showed a lag in growth of 18.5% on the third day and 11.39% on the tenth day due to hypolactation. Starting from day 15, there was an increase in the live weight of suckling piglets due to the restoration of lactation in sows by 20.56%, on day 20 – by 20.43%, on day 25 – by 30.56%, on day 30 – by 31.91%, compared to the control. In the blood serum of experimental sows, the content of total protein increased by 10%, globulins – by 19.13%, total cholesterol – by 40.11%, urea by 48.0%, compared to the beginning of studies (p≤0.05). The activity of alanine aminotransferase in the experiment increased by 8.95% (p≤0.05), alkaline phosphatase decreased by 27.46% (p≤0.05), compared to the beginning of the study. In the blood of experimental sows, the level of circulating immune complexes increased by 42.85% and a decrease in seromucoids by 30.43%. The practical value of the study lies in the use of probiotics to restore the milk productivity of cows and sows after childbirth","PeriodicalId":52817,"journal":{"name":"Naukovi gorizonti","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135936946","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":"Productivity of winter wheat depending on sowing dates and fertilisation","authors":"Nataliia Rudavska, Hryhoriy Konyk, Oksana Tymchyshyn, Наnna Dorota, Antin Shuvar","doi":"10.48077/scihor10.2023.107","DOIUrl":"https://doi.org/10.48077/scihor10.2023.107","url":null,"abstract":"Modern varieties of winter wheat have high genetic productivity potential that can be realised through improved cultivation techniques, including sowing dates optimisation, fertiliser system optimisation, and the application of microelements, which determines the relevance of this study. The purpose of the study is to substantiate the specific features of winter wheat productivity formation based on cultivation techniques in the Carpathian region. The research utilised field, laboratory (for grain quality determination), and statistical methods (for data reliability assessment). Field studies were conducted during 2021-2022 on grey forest surface-eroded soils. The growth and development characteristics of the Estafeta Myronivska, Dovira Odeska, and Akhim winter wheat varieties sown at different dates (September 20, October 5, October 20) were investigated. It was found that grain yield and individual productivity indicators of the studied winter wheat varieties varied depending on sowing dates, mineral fertilizer doses, foliar feeding, and varietal traits. The highest individual plant productivity indicators were achieved by the Estafeta Myronivska, Dovira Odeska, and Akhim varieties sown on October 5 with mineral fertiliser application N120P90K90 (including N30P90K90 applied during cultivation, N15 after soil thawing, N45 (in the BBCH 29-30 growth stage), N30 (BBCH 55-57) with dual application of micronutrients (Aidamin-complex foliar feeding). As a result of the studied factors, an increase in the number of productive stems, grains per stem, and grain weight per spike was observed. The highest grain yield among the studied varieties was achieved by the Estafeta Myronivska variety (5.65 t/ha) when sown on October 5 with N120P90K90 and Aidamin-complex foliar feeding. The research results can be used to adjust the cultivation techniques of winter wheat in production conditions to increase yield and grain quality","PeriodicalId":52817,"journal":{"name":"Naukovi gorizonti","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135936948","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":"Cow haemostasis and resistance of calves under hypoxia conditions","authors":"Mariia Kambur, Andrii Zamaziy, Viktor Kolenchenko, Oleksandr Demydko, Yevheniia Livoshchenko","doi":"10.48077/scihor9.2023.09","DOIUrl":"https://doi.org/10.48077/scihor9.2023.09","url":null,"abstract":"Intensification of the livestock industry is impossible without effective animal reproduction. The solution to this problem is possible only if a viable offspring is obtained, and their body resistance and safety are increased, which determines the research relevance. In this regard, determining the influence of the haemostasis system and blood properties of cows on the growth and development of the foetus, and subsequently on the resistance of newborn calves, depending on the condition at birth, determined the research aim. The conditions of foetal growth and development were found to be related to the activity of haemostatic factors and blood properties of cows. Hemocoagulation factors were active in animals that gave birth to calves in a state of hypoxia. The prothrombin time was 1.63, 1.40, 1.23 and 1.40 times lower, and the prothrombin haemostasis index was 1.53, 1.52, 1.35 and 1.46 times lower, respectively than in cows that gave birth to functionally active calves (p<0.01). The thrombin time of haemostasis, partially activated thrombin time and fibrinogen content in cows of the experimental groups were higher than in animals of the control group. The blood viscosity of cows in the control group was lower (p<0.01), and the blood coagulation of cows in the experimental groups was faster (p<0.05). The increase in coagulation properties of the blood of cows that gave birth to calves in a state of hypoxia occurred against the background of a decrease in the activity of the fibrinolytic system (p<0.05) and retraction of the blood clot. All this reduced the growth and development of the embryo and foetus. The placental ligamentous connection of foetuses born with signs of hypoxia was significantly greater than that of functionally active calves. The intensity and size of embryo growth were higher in the group of functionally active calves (p<0.05). The activity of leukocyte defence factors, and, accordingly, the resistance of the organism of functionally active calves at birth was higher. The percentage of activated leukocytes in the blood of calves was practically the same, and the microbial count was higher in calves of the control group (p<0.05). The results obtained in the course of the research can be implemented in the process of obtaining and rearing calves, and offered to all livestock farms in Ukraine","PeriodicalId":52817,"journal":{"name":"Naukovi gorizonti","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135937423","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":"Aquaculture indicators of young Cherax Quadricarinatus under various feeding plans","authors":"Valeriia Zharchynska, Nataliia Hrynevych","doi":"10.48077/scihor9.2023.61","DOIUrl":"https://doi.org/10.48077/scihor9.2023.61","url":null,"abstract":"Aquaculture of crustaceans is one of the main sources of valuable food protein, which cannot be replaced by other animal or vegetable proteins due to its properties. The use of nutritious and balanced feeds in feeding crayfish helps to increase productivity and at the same time obtain ecologically clean and safe products. The research aims to determine the effect of feeding the developed Decapoda fodder. It has been established that feeding Decapoda food contributes to a more intense increase in the size of crayfish. In particular, the increase in length was 1.1±0.1 cm for the period from 90 to 120 days of cultivation and 1.2±0.1 cm for the period from 120 to 150 days. When using Decapoda food, the increase in length of crayfish during the first month of rearing was 1.8 times greater than that of crayfish fed Ancistrus menu. In the growing period from 120 to 150 days, the increase in the length of crayfish in the experimental group was 2.0 times greater, compared with crayfish in the control group for the same period. When crayfish were fed with Decapoda, the intensity of body weight gain was, on average, 1.4 times stronger, compared to control group crabs. At the same time, the survival rate in this group was 74%, which is a 20% higher number of live specimens compared to the control group of crayfish. The results of the study can be used in the development of a technological scheme for the reproduction and cultivation of crayfish","PeriodicalId":52817,"journal":{"name":"Naukovi gorizonti","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135937425","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 growth regulators in corn crops of the Northern Steppe of Ukraine","authors":"Oleksandr Tsyliuryk, Oleksandr Izhboldin, Iryna Sologub","doi":"10.48077/scihor10.2023.59","DOIUrl":"https://doi.org/10.48077/scihor10.2023.59","url":null,"abstract":"The continuous increase in prices for mineral fertilisers for corn limits the use of fertilisers, which leads to the search for unconventional sources of food elements, and in particular, the use of biological natural and synthetic growth stimulators that are not harmful to the environment and allow wider use of the entire genetic potential of corn. The purpose of the study was to examine the influence of various plant growth regulators on the intensity of photosynthesis, development, growth and productivity of corn of various ripeness groups in the steppe of Ukraine. The field scientific study was conducted according to generally accepted methods of research, followed by the use of mathematical processing of experimental data using variance analysis. An increase in the chlorophyll content was identified when Avangard Grow Amino and Avangard Grow Humate preparations were applied compared to Vympel 2 and Alpha Nano Grow by 11.3-23.7%. The increase in grain from the use of growth stimulators on corn was in the early-maturing hybrid DN Pivikha – 0.13-0.37 t/ha (2.7-7.7%), mediumearly DN Khortytsia – 0.85-1.08 t/ha (16.6-18.5%), medium-maturing DN Julia – 0.20- 0.22 t/ha (3.20-3.4%), medium-late DN Olena – 0.05-0.53 t/ha (0.65-7.6%). Among the preparations used, Avangard Grow Amino and Avangard Grow Humate should be highlighted, which provided a tendency to increase the crude protein content to 6.42- 8.4%, or by 0.12-0.48 percentage points more compared to the control (3.53-4.71%), and the crude fat content to 3.73-5.52%, or by 0.20-0.81 percentage points. The use of growth stimulators in the conditions of the Northern Steppe of Ukraine on corn, especially Avangard Grow Amino and Avangard Grow Humate on early-maturing and medium-early corn hybrids, allows increasing the gross yield of high-quality grain by 7.6-18.4%","PeriodicalId":52817,"journal":{"name":"Naukovi gorizonti","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135970475","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":"State-of-the-art technologies for remote sensing of crops water status and nutrients in agriculture: A review","authors":"Svetoslav Atanasov","doi":"10.48077/scihor9.2023.167","DOIUrl":"https://doi.org/10.48077/scihor9.2023.167","url":null,"abstract":"The research relevance is predetermined by the need to introduce effective methods and tools for monitoring water resources and tracking soil nutrient levels to improve agricultural production and sustainable use of natural resources. The research aims to provide a comprehensive overview of the latest technologies and techniques used in RS for accurately assessing water status and nutrient levels in crops, aiming to enhance agricultural productivity and sustainability. The latest advancements in remote sensing techniques that enable precise monitoring and assessment of water levels and nutrient conditions in crops, crucial for optimizing agricultural practices, were studied. The literature research was conducted by adapting the Preferred Reporting Items for Systematic Reviews and Meta-Analysis Methods. The current study provides an overview of RS technology, with a special focus on establishing crops’ water and nutrient status in agriculture. A thorough review of research focused on the applications and technologies of RS in agriculture, using a broad-to-narrow approach, was also conducted. The scientific studies analysed provide the following: RS crops on a large scale level, RS crops on a field level, RS crops on a greenhouse level, RS on a plant level and RS on a leaf level. Current cutting-edge technologies are also presented. The findings of this study could be beneficial to those involved in sustainable agriculture, such as researchers, academics, and aspiring students","PeriodicalId":52817,"journal":{"name":"Naukovi gorizonti","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135970241","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":"Study of the world collection of oilseed flax as a source material for selection in the conditions of Northern Kazakhstan","authors":"Ruslan Iskakov, Damir Kaldybaev, Alyona Zinchenko, Ivan Sidorik","doi":"10.48077/scihor10.2023.116","DOIUrl":"https://doi.org/10.48077/scihor10.2023.116","url":null,"abstract":"According to the modern requirements of cultivation, new varieties of oilseed flax are being created, differing in a complex of useful features. The basis of the selection of oilseed flax is the study, selection, and creation of new varieties based on the world collection and suitable for the agro-climatic conditions of Northern Kazakhstan. The purpose of the study is to investigate the collection samples of oilseed flax in the conditions of the Kostanay region of Northern Kazakhstan and to select the most promising pedigree material according to economically valuable characteristics in the conditions of a moisture deficit zone. The following methods were used: biological, phenological, laboratory, statistical, and information analysis of the adaptive capabilities of individual varieties of oilseed flax. An assessment of economically valuable traits was carried out for 14 varieties of oilseed flax from the world collection of various ecological and geographical origin for the period in 2020- 2022. As a result of the research, samples characterised by high yield were identified: Linol – 82 g/m2 , Sibirskaya 38854 – 71 g/m2 , Antares – 78.3 g/m2 . Samples of the varieties Biryuza, Krokus, Kustanayskiy – 8.2 g, Iceberg – 8.1 g were distinguished by high indicators of the weight of 1,000 seeds. A valuable and plastic source material for selection with the main valuable and economic characteristics was identified: the growing season for 85-92 days, with a seed yield of more than 47.5-82.2 g/m2 , a weight of 1000 seeds of 6.9- 8.1 g, oil content in seeds of 43.7-47.5%, plant height of 45-60 cm. The selected samples are recommended for cultivation in Northern Kazakhstan: by precocity – Sibirskaya 38854 and Iceberg; productivity – Linol, Antares; weight of 1000 grains – Nebesniy, Biryuza, Linol, Krokus; oil content in seeds – Kostanayskiy-11, Iceberg; resistance to fusarium – Kostanayskiy-11, Sibirskaya 38854, Antares, Iceberg. The effectiveness of the breeding programme depends on the patterns of inheritance of economically valuable traits operating in a hybrid population, reducing the loss of valuable genotypes and reducing costs by culling less valuable traits","PeriodicalId":52817,"journal":{"name":"Naukovi gorizonti","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136214449","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 influence of water-soluble secretions of saffron seed on the germination of seeds of soft winter wheat varieties","authors":"Vira Mykolaichuk, Margaryta Korkhova","doi":"10.48077/scihor9.2023.81","DOIUrl":"https://doi.org/10.48077/scihor9.2023.81","url":null,"abstract":"Due to climate change, there is a need to introduce new crops into agricultural production in Ukraine, among which Crocus sativus L., a herbaceous perennial tuberous plant, whose allopathic properties have been insufficiently studied, can take a leading place. Therefore, the aim of the study was to determine the effect of water-soluble flower secretions and their individual elements on the initial stages of seed germination of two winter durum wheat varieties (Vidrada and Koshova). In the course of the study, generally accepted methods were used: laboratory research, analysis, synthesis and statistical. It was found that water-soluble extracts of flowers of different states and elements of C. sativus flowers do not have a significant effect on the morphometric and quality parameters of wheat kernels during germination. Water-soluble secretions of flowers of different states have an inhibitory effect on the development of the root system; secretions of the bud and the bloomed flower inhibit the growth of coleoptiles. The effect of water-soluble secretions of sowing saffron flowers elements has varietal peculiarities: for winter wheat seedlings of Vidrada variety, the petals have a stimulating effect on the total length of roots and their weight; for seedlings of Koshova variety, the opposite effect is observed. The water-soluble secretions of petals and stamens have a stimulating effect on the coleoptile of Vidrada plants, and the water-soluble secretions of petals have a stimulating effect on Koshova seedlings. The correlation between the length of roots and coleoptile under the influence of watersoluble secretions of flowers of different states and their elements, as well as the index of allelopathy have varietal characteristics. The obtained scientific results will contribute to the development of agrotechnical measures for the cultivation of saffron in Ukraine, selection of winter wheat varieties for joint cultivation and use of plant residues as biological stimulants","PeriodicalId":52817,"journal":{"name":"Naukovi gorizonti","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135022831","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":"Respiratory form of infectious rhinotracheitis: Analysis of immunomorphological reactions","authors":"Almazbek Irgashev, Rysbek Nurgaziev, Chyngyz Nurmanov, Eliza Asanova, Svetlana Ishenbaeva","doi":"10.48077/scihor10.2023.32","DOIUrl":"https://doi.org/10.48077/scihor10.2023.32","url":null,"abstract":"The concentration of cattle in limited areas, nutritional disorders, and imbalance of micro- and macroelements contribute to suppression of natural resistance of the organism, insufficient live weight gain, leading to the growth of infectious diseases of young animals with high rates of forced slaughter and cattle mortality. The source of the causative agent of rhinotracheitis infection – Bovine alphaherpesvirus 1 hinders the development of the livestock industry, thus, it is necessary to search for possible approaches to prevent and control this infection. The purpose of the research is to determine the immunomorphological changes in the lymphoid tissue of the trachea and bronchial system, in the regional lymph nodes of the lungs and in the spleen in calves naturally affected by infectious rhinotracheitis. The experimental studies were based on the research of immunomorphological reactions in lymphoid tissue during infection of young cattle with Bovine alphaherpesvirus 1, using polymerase chain reaction, histological and immunohistochemical methods. According to the results, it was established that hyperplasia of tracheaassociated lymphoid tissue was observed in the trachea, and hyperplasia of bronchial-associated lymphoid tissue was observed in the lungs; the affected areas of the trachea and lungs were infiltrated with lymphocytes, macrophages and plasma cells. The immunomorphological reactions of regional lymph nodes demonstrate hyperplasia of B- and T-dependent zones, and in the spleen – hyperplasia of T-dependent zones of the white pulp. Thus, immunocompetent cells of lymphoid tissue associated with B- and T-dependent areas of the trachea, bronchial system of the lungs and regional lymph nodes of the lungs, and with T-dependent areas of the spleen, are directly involved in the pathogenesis of infectious rhinotracheitis of respiratory type calves. Antibacterial therapy with antibiotics destroys pathogenic and normal flora in the intestine, but they are not effective enough on viral infection, therefore, production trials of effective means of specific prophylaxis and vaccination are the primary task of veterinary medicine","PeriodicalId":52817,"journal":{"name":"Naukovi gorizonti","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135165337","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}