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النتائج 81 - 90 من 477
Avian Influenza; Virus Characteristics, Clinical Symptoms and Antiviral Drugs
2022
Coşkun Aslan
The viruses that cause avian flu (influenza) are highly contagious and highly variable viruses commonly found in birds. Wild birds in aquatic habitats are thought to be natural reservoirs for influenza viruses, but domestic poultry and other birds can also be infected. Influenza viruses belong to the orthomyxovirus family. Influenza A viruses are the only orthomyxoviruses known to naturally affect birds. Many bird species are susceptible to infection with influenza A viruses. Influenza A viruses have nucleocapsid and matrix proteins associated with their antigenic properties but are subtyped according to the hemagglutinin (H) and neuraminidase (N) antigens. In addition, avian influenza virus infections are considered to be one of the most important public health problems of the 21st century. Only in the last century, avian influenza viruses have created 4 different pandemics and have caused the death of a large number of poultry all over the world. The main purpose of this study is to provide information about avian influenza virus characteristics, important virus subtypes, clinical symptoms and antiviral drugs by analyzing the “Avian influenza” known as a poultry epidemic that has had significant effects in the 21st century.
اظهر المزيد [+] اقل [-]Identification of Factors Affecting Benefiting from Young Farmer Project Support: Case of the Mediterranean Region
2022
Osman Uysal | Duygu Birol
This study aims to determine the characteristics of young farmers and their businesses that benefit from and cannot benefit from young farmer support in the Mediterranean Region and determine the factors that affect the benefit of young farmer project support. In 2016, a survey was conducted with all 160 producers who benefited from young farmer support, and a survey was conducted with 56 producers who applied for young farmer project support but could not benefit from it to make comparisons between groups. The tendency of farmers to benefit from the young farmer support project was determined using artificial neural networks and logistic regression analysis. It was determined that the majority of the producers who received support only made animal production and mixed production (livetock production and vegetable production), while the majority of the producers who did not receive support made only plant production. With both analysis methods, it was determined that the most critical variables that affect the benefit of young farmer project support are the type of activity, the share of non-agricultural income in total income, the number of farmers in the family, the education period, the status of having non-agricultural income and family size. The total correct classification rate was found to be 87.04% in the logistic regression analysis and 91.20% in the artificial neural network analysis, and it was seen that the classification percentages obtained by both methods were quite close to each other.
اظهر المزيد [+] اقل [-]Determination of Phytochemicals and Antioxidant Capacity of Satureja hortensis L
2022
Fatma Ergün
Thyme is one of the spices that is widely consumed in the regions where it grows and is used in many dishes, especially soups, and gives a regional identity to the dish where it is used. In this study, the amount of phytochemicals and antioxidant capacity of the plant Satureja hortensis L. (süpürge kekiği, çibriska) which grows spontaneously and is used as a spice in meals in the Karakoçlar settlement area of Olur district of Erzurum province was investigated. The total amounts of phenolic and flavonoid substances were determined to be 40.85±0.85 mg GAE/g and 26.52±0.46 mg QE/g, respectively. In addition, the DPPH radical scavenging activity of the plant extract was calculated as 45.24 ±3.47 μg TE/mL and the IC50 value was calculated as 177.11±0.99 μg/mL. It was determined that the Cu2+ reducing antioxidant capacity of the S. hortensis plant extract was 2162.09±113.61 μg TE/mL and the Fe3+ reducing antioxidant capacity was 24.36±4.59 μg TE/mL. As a result, it was concluded that the S. hortensis plant, which is known with different names in different regions, has antioxidant potential and can be used as a natural antioxidant source in addition to its common use.
اظهر المزيد [+] اقل [-]Bazı Hayvansal Ürünlerin Beslenme ve Sağlık Açısından Önemi
2022
Sibel Alapala Demirhan | Nuray Şahinler
Yetişkin bir insanın dengeli olarak beslenebilmesi için; bir günde 2800-3000 kalori ve en az 75-80 g protein alması ve alınan bu proteinin de en az 30-35 g’ının hayvansal kökenli olması gerekmektedir. Besin maddeleri karbonhidratlar, proteinler, lipitler, vitaminler ve minerallerden oluşmaktadır. Bütün gıdalar az veya çok bu bileşikleri içerir. Bitkisel kökenli besinlerde bu bileşikler olsa da et, süt, yumurta, bal gibi hayvansal kökenli besinlerde proteince zengin olmasının yanında içerdiği proteinin biyolojik değerliliği de yüksektir. Hayvansal ürünlerin hastalıkların tedavilerine destek olarak kullanılması üzerinde durulduğunda da keçi sütünün öneminin belirtilmesi gerekmektedir. Keçi sütlerinden birçok hastalıkların tedavisinde yararlanıldığı bilinmektedir. Keçi sütü ve keçi sütü ürünlerinin düzenli olarak tüketilmesinin egzema, astım, sindirim rahatsızlıkları, varisle ilgili bazı rahatsızlıklar, virus apseleri ve bazı alerjik durumların tedavisinde yararlı olduğu uygulamalardan alınan olumlu sonuçlarla belirlenmiştir. “Apiterapi “ arı ürünleri ile tedavi yöntemidir ve ülkemizde hızlı bir gelişme göstermektedir. Arıcılık aktivitelerinden elde edilen ürünler; bal, polen, propolis, arı sütü, arı zehiri gibi ürünlerdir. Bu ürünler halk arasında birçok hastalıklarda (uykusuzluk, sindirim sistemi hastalıkları, üst solunum yolu enfeksiyonları, romatizmal, gripal, ortopedik hastalıklar, deri kanseri, ekzema, astım, damar sertliği, mide barsak hastalıkları, romatizmal hastalıklar, böbrek, idrar yolu enfeksiyonları vb.) tedavilere takviye olarak kullanılmaktadır. Bal, propolis, arı sütü mükemmel bir antibakteriyel özelliğe sahiptir. Arı zehirinin antiromatizmal özelliği bulunmakta, polende immünolojik hastalıkların tedavisinde kullanılmaktadır. Hayvansal ürünlerin beslenme ve sağlıkaçısından önemi de göz ardı edilmemeli ve konuyla ilgili daha fazla çalışmanın yapılması gerekmektedir.
اظهر المزيد [+] اقل [-]Determination Effects of Sulfur Applications on Some Fungal Diseases of Potato Tubers (Solanum tuberosum L.)
2022
Arif Şanlı | Hülya Özgönen Özkaya
This study was carried out in order to determine the antifungal effects of elemental sulfur applications on Rhizoctonia solani, Fusarium solani in potatoes in 2011-2012. Elemental sulfur was applied in 0, 2, 4, 6, 8 and 10 kg S/da doses with 3 different methods (seed tuber, soil (seed bed) and potato leaf). For both infections, seed tuber and soil applications showed higher antifungal effects than foliar applications. The effects of the application methods were different depending on the doses, and 6 kg/da and above S in seed tuber applications, 10 kg/da S in soil applications, and 6-8 kg/da S doses in foliar applications showed a higher antifungal effect. Infected tuber ratio and the infection severity with R. solani decreased to 18.8% and 6.0%, respectively with 10 kg/da S soil applications. The mean infection severity and infected tuber rate with F. solani decreased to 6.8% and 6.0%, respectively, with 8 kg/da S seed tuber applications. Sulfur applications showed high antifungal effect on both fungal pathogens, and this effect was higher on R. solani. With sulfur applications, a significant resistance can be created against R. solani and F. Solani infections, which have high economic damage in the potato plant. It was concluded that the application of sulfur to the soil or seed tuber was much more effective than the foliar application and 6-8 kg/da S applications may be sufficient to control of fungal diseases.
اظهر المزيد [+] اقل [-]Effects of Light and Dark Conditions on Root Development of Black Mulberry (Morus nigra L.) Hardwood Cuttings
2022
Fatmanur Çezik | Çetin Çekiç | Kenan Yıldız | Hakan Karadağ | Osman Nuri Öcalan
This study was carried out to determine the root development of black mulberry hardwood cuttings kept in light and dark conditions. The experiment was carried out in the polyethylene greenhouse of Tokat Gaziosmanpaşa University Research and Application Center, in 2021. As material, hardwood cuttings prepared from one-year-old branches of black mulberry trees were used. The cuttings were divided into 3 different groups and planted in rooting beds containing perlite with bottom heating (22±2 °C). First group of cuttings were planted into beds as soon as taken from tree (control), the second group of cuttings were plantend after the cuttings were kept under daylight conditions for 5 days (in the open) and third group cuttings were planted after the cuttings were kept in the dark conditions (in the dark) for 5 days in both conditions soaked in water. All cuttings were dipped in 6000 ppm IBA (indole-3-butyric acid) hormone for 5 seconds just before planting. The experiment is with 3 replications and there are 15 cuttings in each replication. After keeping 90 days in the rooting environment, the cuttings were removed; root number (root/stem), root length (cm), root diameter (mm), decay rate (%), rooting rate (%) and callus formation rate (%) parameters were investigated. As a result of the study, there was no statistical difference between the different conditions in the investigated parameters. The data obtained varied between the following values; rooting rate between 68.89% - 93.33%, decay rate between 24.4% - 55.5%, callus formation rate between 68.8% - 88.8%, number of roots 8.8 - 13.5 root/stem, root length 6.5 - 7.4 cm and root diameter between 1.02 - 1.16 mm.
اظهر المزيد [+] اقل [-]Küresel Salgın ve Türkiye Hayvancılığı Üzerine Etkileri
2022
Sibel Alapala Demirhan | Nuray Şahinler
Covid-19 salgını gıda ve hayvancılık sektörünün önemini ortaya çıkarmıştır. Hayvancılık sektöründe üretimin devam etmesi olası gıda krizini önlemiştir. Covid 19 salgını ülkemizde hayvancılık üzerinde bazı etkiler yaratmıştır ve küresel piyasalarla birlikte maliyetlerde artış olmuştur. Ne yazık ki maliyetlerdeki artış halen devam etmekte ve üreticiyi zor duruma sokmaktadır. Bu çalışmada, pandemi sürecinin Türkiye’de hayvancılığı üzerine olan etkileri değerlendirilmiştir. Bu konu ile ilgili ulaşılabilen kaynaklar incelenerek mevcut durum ortaya konulmuştur. Ayrıca, COVID-19 etkeninin özelliği ile hayvan türleri arasındaki farklılıklara ait bilgiler verilmiş ve çiftlik hayvanları sayıları incelenerek büyükbaş, küçükbaş, kanatlı ve arı ürünleri üretimleri incelenmiştir. Bu çalışma, COVID- 19’un hayvancılık sektöründe ve çiftlik hayvanlarında görülen etkileri ile ilgili veriler derlenerek literatüre katkı sağlamak üzere hazırlanmıştır.
اظهر المزيد [+] اقل [-]The Effects of Different Organic and Inorganic Fertilizer Applications on Yield and Improvement of Maize Plant
2022
Hasan Durukan | Zekeriya Duran | Handan Saraç | Ahmet Demirbaş
In this study, it was aimed to determine the effects of organic and inorganic fertilizer applications at different rates on the yield and development of maize plant. The research was carried out in three replications in greenhouse conditions, according to the randomized plot design, in plastic pots with a capacity of three kg. Applications in research; control, conventional fertilization, gypsum (1% and 2% w/w), anhydrite (1% and 2% w/w), calcite (1% and 2% w/w), perlite (1% and 2% w/w), vermicompost (5% and 10% w/w) and animal manure (5% and 10% w/w). Maize was used as the test plant. Maize plant was harvested approximately 60 days after planting and analysis of dry matter production and nitrogen, phosphorus, potassium, calcium, magnesium, iron, zinc, manganese and copper were made. According to the results of the research, the highest dry matter production was determined at 15.4 g pot-1 and 10% of the vermicompost application. This application was followed by conventional fertilizer application (13.64 g pot-1). In addition, vermicompost application in general had higher values in macro and micro element concentrations of maize plant.
اظهر المزيد [+] اقل [-]Bjerkandera adusta Collected from Niğde: Analysis of Total Phenolic Compound, Antioxidant, vnd Antimicrobial Properties
2022
Elif Ildız | Şükrü Canpolat | Cemil İşlek | Elif Yürümez Canpolat | Yasemin İşlek | Ilgaz Akata
Macrofungi have long been used as food and medicinal purposes by humankind. This study aimed to identify a macrofungus sample collected from Niğde, Türkiye in 2019 via molecular techniques and determine the content of total phenolic compounds, antioxidant and antimicrobial activities. According to data obtained from the sequence analysis of ITS fragment of rDNA the macrofungus sample was identified as Bjerkandera adusta (Willd.) P. Karst (1880). The sample was extracted with ethanol and methanol. Total phenolic compound content, antioxidant activity via DPPH scavenging method and antimicrobial activity via disc diffusion method of B. adusta was determined by using these extracts. The amount of total phenolic compounds was found as 772.28 µg GAE/mL for a methanolic extract of B. adusta. The ethanol extract of B. adusta showed 79.66% scavenging activity of 0.1 mM DPPH solution. The highest inhibition zone diameter was measured as 28±1 mm against P. aeruginosa by ethanolic extract, while the lowest antimicrobial activity was found in 15 µL methanol extract against S. typhimurium with an inhibition zone diameter of 8.7±1.2 mm.
اظهر المزيد [+] اقل [-]Comparative Structural Analysis of Heavy Metal ATPases in Arabidopsis thaliana, Arabidopsis halleri, Brassica rapa, and Brassica juncea
2022
Abdulrezzak Memon | Nuriye Meraklı
Arabidopsis thaliana has eight genes encoding members of the type P1B heavy metal–transporting ATPase, subfamily of the P-type ATPases. We focused our study on four ATPases, mainly HMA1, HMA2, HMA3, and HMA4, which are closely related and most similar in their sequences. We carried out the bioinformatics analysis of these metal ATPases and obtained their structure in A. thaliana, A. halleri, and the other heavy metal accumulators in Brassica spp. A. thaliana is a model plant for research because of the duplications and other evolutionary events. These evolutionary events provided a chance to elucidate their regulation and function in the cell. All previous bioinformatics analyses have given some information about their structure, but not much work has been done on their structural components and interactome analysis. Experimental determination of 3D structures is essential to understand better these proteins’ function, which is crucial for the proper functioning of all plant cellular processes. Especially, docking sites and domains need to be worked out to understand the role of these transporter proteins and their interaction in plant cells. These bioinformatic analyses will help the researcher understand these ATPases’ role in detoxifying the toxic metals from the cells of accumulator plants. Further research on gene cloning, gene expression, and generating new accumulator plants for phytoremediation is needed to reclamation polluted soils from toxic heavy metals.
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