خيارات البحث
النتائج 111 - 120 من 392
Root Biomass Distribution with Root and Shoot Development at Different Growth Stages of Wild, Ancient and Modern Wheat Species النص الكامل
2017
Hayati Akman
This study was conducted to investigate root and shoot traits of wild, ancient and modern wheat genotypes belonging to 8 different species at long tubes under field weather conditions. It was found significant differences between genotypes with regard to root and shoot traits. The research results indicated that root biomass distribution of genotypes at GS 31 ad GS 69, respectively was found 59.2% and 56.3% in 0-30 cm, 76.7% and 71.9% in 0-60 cm. Modern wheats (Çeşit 1252, Konya 2002) and Triticum vavilovii (ancient wheat) had high root biomass distribution in top soil. In the study, species with AABBDD genomes had higher root length than those with AABB, AABBGG and AA genomes. Triticum dicoccoides, Triticum timopheevii and Triticum monococcum had lower values than other genotypes in terms of root length, crown root number, root biomass, shoot biomass and plant height at both growth stages (GS 31 and GS 69), while Triticum vavilovii and Triticum spelta (hexaploid) took part in the front. Accordingly, Triticum vavilovii and Triticum spelta may be used in breeding programs to improve new modern cultivars with high root and shoot traits.
اظهر المزيد [+] اقل [-]Antibacterial and Antioxidant Activities of Liquidambar Orientalis Mill. Various Extracts Against Bacterial Pathogens Causing Mastitis النص الكامل
2017
Gülten Ökmen | Zafer Cantekin | Mohammmad Intakhab Alam | Onur Türkcan | Yaşar Ergün
Antibiotic resistance is being constantly developed worldwide. Coagulase Negative Staphylococci (CNS) and Staphylococcus aureus are common causes of bovine subclinical mastitis. Bioactive compound of medicinal plants shows anti-microbial, anti-mutagenic and anti-oxidant effects. The anti-bacterial and anti-oxidant activities of Liquidambar orientalis (L. orientalis) extracts on subclinical mastitis causing bacteria in cows have not been reported to date. The aim of the present study was to examine anti-bacterial and anti-oxidant effects of L. orientalis leaf extracts on S. aureus and CNS isolated from cows with subclinical mastitis symptoms. In this study, 3.2 mg/mL minimum inhibitory concentration (MIC) of ethanol extracts of L. orientalis has shown to be a most potent anti-bacterial and anti-oxidant for all isolated bacterial species from mastitis cows. In this study, it was investigated anti-bacterial and anti-oxidant potentials of acetone, methanol and ethanol extracts of the L. orientalis. The acetone extract showed maximum inhibition zone against S. aureus numbered 17 (12 mm). In addition to anti-bacterial properties, anti-oxidant activity of L. orientalis extract was examined by ABTS [2,2'-azino-bis (3-ethylbenzothiazoline-6-sulphonic acid)] free radical assay. Trolox was used as a positive control anti-oxidant. Ethanol extract exhibited a strong anti-oxidant activity like Trolox anti-oxidant which was effective at 2.58 mM concentration. Bioactive compounds of sweet gum may be useful to screening mastitis causing bacteria for clinical applications.
اظهر المزيد [+] اقل [-]The Importance of Use of Computer Technology in Ecological Livestock النص الكامل
2017
Hasan Çelikyürek | Kadir Karakuş
The Importance of Use of Computer Technology in Ecological Livestock النص الكامل
2017
Hasan Çelikyürek | Kadir Karakuş
Ecological livestock is a production method which allows all kinds of natural behaviors to be shown, fed with ecological feeds, in order to increase efficiency additives are not used, healthier products are offered to consumers, is sensitive to environmental awareness and animal rights. Especially in recent times, livestock sector has been in demand due to significantly increase of demand for ecological products. Main purpose of ecological agriculture is maintaining production optimization in the life chain between soil, plants, animals and humans healthfully. For this purpose, it is necessary that computer technology should be used at every stage of ecological animal husbandry. Although family-run businesses are in the forefront nowadays, computer technology is not utilized sufficiently. Consequently, information cannot be recorded regularly at every stage of breeding by them. Essential automation system is accompanied by record keeping system that is obligatory and necessary for ecological animal husbandry. Utilizing computer technologies will be crucial in terms of effective use of livestock organizations, creation of ecological animal production policies and strategies, and more active involvement in production planning.
اظهر المزيد [+] اقل [-]Espacialidad volumétrica de madera en plantaciones forestales usando redes neurales artificiales con imágenes de satélite النص الكامل
2019
Moreno-Arteaga, Argemiro José | Moreira-Thiersch, Monica Fabiana Bento | Averna-Valente, Robería Oliveira | Bernardi, Lucas Krohling | Vasconcelos, Sophia Lourengo | Thiersch, Cláudio Roberto
Abstract The sustainable agriculture of forest plantations demands the permanent monitoring of the quantity of processed wood, thus becoming difficult to monitor large planted areas by using only manual procedures. Therefore, in this research artificial neural networks (RNA) of multilayer perceptrons, were modeled to estimate the spatial of wood volume in a Eucalyptus-sp plantation located in the state of Mato Grosso del Sur in the Central-West region of Brazil. As input variables in the RNA spectral bands, the textures of the bands obtained with Gray Level Co-occurrence Matrices and vegetation index were used, which were derived from digital satellite image Spot 6. The resulting RNA with the best performance presented accuracy of 93.32% and coefficient of determination of 0.9761. However, this network presented a mean square error of 16.32% (RMSE de 7.85 m3ha-1), but with a unbiased distribution of the residuals. So, the model showed to be suitable to monitor the amount of wood in large areas without overestimating or underestimating the prediction. Compared with different machine learning methods using the same variables, the built network seems to have a higher precision and accuracy. Even in the neuronal models using only spectral bands and vegetation indexes, a better performance was evidenced, showing that the textures contribute in the improvement of predictions. | Resumen La agricultura sustentable de plantaciones forestales exige la estimación permanente de la cantidad o volumen de madera que se está produciendo en un momento dado, lo que es difícil en extensas áreas de bosque, si solo se utilizan procedimientos manuales en campo. En la presente investigación se modelaron redes neuronales artificiales (ANNs, su sigla en inglés) de perceptrón multicapa para la estimación espacial de volúmenes de madera en una plantación de Eucalyptus sp. localizada en el estado de Mato Grosso del Sur, región Centro-oeste de Brasil. Para el efecto se emplearon como variables de predicción bandas espectrales, texturas de las bandas obtenidos con matriz de coocurrencia de niveles de grises e índice de vegetación, que fueron derivados de imagen digital de satélite Spot 6. La ANN resultante con mejor desempeño presentó una precisión de 93.32% y un coeficiente de determinación de 0.9761, con respecto a valores obtenidos con medidas de campo; no obstante, presentó un error cuadrático medio relativo de 16.32% (RMSE de 7.85 m3/ha), pero la distribución de los residuos no fue tendenciosa, por tanto, el modelo fue promisorio para mapear los volúmenes de madera en extensas áreas sin sobreestimar o subestimar la predicción. La red construida mostró mayor precisión y exactitud cuándo se comparó con otros métodos que usaron variables similares de estimación, inclusive en comparación con modelos neuronales que utilizaron solo bandas espectrales e índices de vegetación.
اظهر المزيد [+] اقل [-]The Investigation of the Accessibility of Children's Playgrounds in the Town of Ordu النص الكامل
2017
Murat Yeşil | Pervin Yeşil
The Investigation of the Accessibility of Children's Playgrounds in the Town of Ordu النص الكامل
2017
Murat Yeşil | Pervin Yeşil
Children's playgrounds which are safe and quiet environments that children can play there have started to become rare as a result of rapid urbanization. Because, the studies have shown that unplanned and distorted urban spaces affect children's behaviours, attitudes and reactions in a bad way. In this study, the availability of children's playgrounds in 22 districts of the city centre of Ordu was investigated. In this context, firstly, children's play areas were determined based on the neighbourhood scale and then area calculations were made and the amount of play area by per child between 0-14 years was calculated in each district. In the second stage, accessibility maps for children's playgrounds were obtained by determining the availability of the playgrounds at 200m distance. The results of this study showed that children's playgrounds are not balanced in the city, increased in some districts, in some cases they are not within reachability limits and can not meet their needs.
اظهر المزيد [+] اقل [-]Zmiany strukturalne na rynku trzody w Stanach Zjednoczonych i ich wpływ na cykl świński النص الكامل
Zawadzka, Danuta
In the last twenty years, the pork meat market in the United States was modified in many aspects including changes in concentration of the pig and pork production as well as on progress in the vertical coordination. The large production and the involvement of large capital does not allow producers to restrict production in a period of falling prices of pigs. As a result, fluctuations in supply, being the most important element of "hog cycle" is characterized by decreasing their amplitude. It is accompanied by changing of the cobwebs model from periodic to convergent fluctuations. However, regardless of small variations in production, pig prices are characterized by the same large amplitude fluctuations and their frequency as in previous decades. This happens due to two reasons. On the one hand, according to economic theory inelastic demand is accompanied by flexibility of prices. On the other hand, the pig prices are influenced by exchange rates of currencies with respect to dollar of the countries trading with the United States. Synopsis. W ostatnich dwudziestu latach rynek wieprzowiny w Stanach Zjednoczonych został poddany głębokim przemianom polegających na koncentracji podmiotów na wszystkich poziomach produkcji trzody i wieprzowiny oraz na postępie w koordynacji pionowej. Duża skala produkcji i zaangażowanie dużego kapitału nie pozwalają producentom na ograniczanie produkcji w okresie spadku cen trzody. W rezultacie wahania podaży, a więc najistotniejszy element w mechanizmie „cyklu świńskiego” charakteryzuje się malejącą amplitudą wahań. Oznacza to zmianę modelu pajęczyny z periodycznego na model wahań zbieżnych. Pomimo relatywnie małych wahań produkcji, ceny trzody cechuje tak samo duża amplituda wahań i częstość ich występowania jak w poprzednich dziesięcioleciach. Dzieje się tak, z dwu powodów. Z jednej strony zgodnie z teorią ekonomii usztywnionemu popytowi towarzyszy giętkość cen. Z drugiej strony na ceny trzody wpływ mają także kursy dolara do walut krajów, z którymi Stany Zjednoczone prowadzą handel zagraniczny.
اظهر المزيد [+] اقل [-]Menşe İşaretli Karnavas Dut Pekmezi’nin Tüketici Tercihlerine Dayalı Pazarlama Stratejileri النص الكامل
2017
Yavuz Topcu | Derya Baran
Menşe İşaretli Karnavas Dut Pekmezi’nin Tüketici Tercihlerine Dayalı Pazarlama Stratejileri النص الكامل
2017
Yavuz Topcu | Derya Baran
Çalışmanın amacı, Erzurum’da ikamet eden tüketicilerin menşe işaretli Karnavas Dut Pekmezi tüketim tercihleri ve satın alma modellerini etkileyen temel faktörlere dayalı bütünsel pazarlama stratejilerini belirlemektir. Çalışmanın ana materyali, Erzurum ilinde ikamet eden ve Karnavas Dut Pekmezi tüketen 401 hane halkı ile yapılan anket çalışmasından elde edilen birincil verilerden oluşmaktadır. Elde edilen verileri dikkate alarak; satın alma kararı üzerinde etkili olan ana faktörlerin belirlenmesinde Temel Bileşenler Analizi (PCA) ve tüketicilerin tüketim sıklıklarına göre grupların oluşturulmasında İki Aşamalı Kümeleme Analizi kullanılmıştır. Araştırma sonuçları; Karnavas Dut Pekmezi’ni yoğun ve ılımlı düzeyde tüketen kullanıcılar sırasıyla doğrudan pazarlama yaklaşımları altında kırsal kalkınmaya katkı sağlamak için menşe etiketli bütünsel kalite ve geleneksel üretim metotlarından sağlanan duyusal kalite niteliklerini dikkate alan yerel markalı genişletilmiş ve gerçek mamul imajlarının perakende seviyesinde konumlandırılmasının gerekliliğine işaret etmişlerdir. Diğer taraftan düşük düzeyde kullanıcılar ise, geleneksel üretim metotları ve hedonik kalite yaklaşımını uygulayan yerel markalı gerçek mamul imajları altında mamullerin konumlandırılması ve tutundurma karması ile yayılım etkisinin artacağı üzerine odaklanmışlardır. Bu yüzden her bir segmentteki kullanıcıların ihtiyaç ve istekleri dikkate alınarak, onların fayda beklentileri ile mamul imajlarına göre konumlandırma ve tutundurma stratejileri uygulanabilir.
اظهر المزيد [+] اقل [-]Forage yield, chemical composition and in vitro gas production of triticale varieties (x Triticosecale Wittmack) preserved by silage or hay النص الكامل
2018
Robles Jimenez, Lizbeth Esmeralda | Morales-Osorio, Andres | Gutierrez Martinez, María de Guadalupe | Osorio Avalos, Jorge | Castelan Ortega, Octavio Alonso | Gonzalez-Ronquillo, Manuel
Abstract Alternatives to good quality forages for animal feeding include small grain cereals such as triticale (X Triticosecale Wittmack), which presents environmental tolerance and acceptable nutritional value. The objectives of the present study were to evaluate the forage yield, the chemical composition and in vitro gas production of three varieties of triticale (UAEMex, Bicentennial and Siglo XXI), by two conservation method (ensiled or hay). A completely randomized design with three replicates per treatment was used. The Siglo XXI variety got more forage (P < 0.0001) in both fresh and dry matter than the other treatments. There were differences (P < 0.05) between varieties, UAEMex presenting higher content of organic matter (OM 906 g/kg DM) and crude protein (CP, 156 g/kg DM) (P < 0.05), and Bicentennial and Siglo XXI presenting higher content acid detergent lignin (ADL, 72.3 ± 0.3 g/ kg DM). Higher quantities of dry matter (DM), neutral detergent fiber (NDF) and ADL in the hay method (P < 0.05) were observed compared to the silage method. The hay preservation method produced higher values for digestible OM (OMD, 838 g/kg DM), metabolizable energy (ME,MJ/kg DM) and short chain fatty acids (SCFA) in comparison with silage. The variety UAEMex had higher OMD, ME, GY24h and SCFA than the other treatments. Siglo XXI and the silage method showed higher milk yield (kg milk/ ha) (P < 0.005). It was concluded that the triticale variety Siglo XXI was superior to the other varieties by their forage and milk yield potential production, the silage conservation method presented greater fermentation than hay treatment. | Resumen Las alternativas a los forrajes de buena calidad para la alimentación animal incluyen cereales de grano pequeño como el triticale (X Triticosecale Wittmack), que presenta tolerancia ambiental y valor nutricional aceptable. Los objetivos del presente estudio fueron evaluar el rendimiento de forraje, la composición química y la producción de gas in vitro de tres variedades de triticale (UAEMex, Bicentenario y Siglo XXI), por dos métodos de conservación (ensilado o heno). Se utilizó un diseño completamente aleatorizado con tres repeticiones por tratamiento. La variedad Siglo XXI obtuvo más forraje (P <0.0001) en materia fresca y en materia seca con respecto al resto. Hubo diferencias (P <0.05) entre variedades, UAEMex presentó mayor contenido de materia orgánica (MO 906 g / kg MS) y proteína cruda (PC, 156 g / kg MS) (P <0.05), y Bicentenario y Siglo XXI presentaron mayor contenido de lignina ácido detergente (LAD, 72.3 ±0.3 g / kg MS). Se observaron cantidades superiores de materia seca (MS), fibra detergente neutro (FND) y LAD en el heno (P <0.05) en comparación con el ensilaje. El método de preservación del heno produjo valores superiores para la digestión de la MO (MOD, 838 g / kg de MS), la energía metabolizable (EM Mj/kg MS) y los ácidos grasos de cadena corta (SCFA) en comparación con el ensilado. La variedad UAEMex fue superior para la MOD, EM, GY24h y SCFA con respecto al resto. Las variedases Siglo XXI y el método de ensilaje mostraron mayor producción de leche (kg de leche / ha) (P <0.005). Se concluyó que la variedad de triticale Siglo XXI fue superior a las otras variedades por su producción potencial de forraje y producción de leche, el método de conservación de ensilaje presentó mayor fermentación con respecto al heno.
اظهر المزيد [+] اقل [-]Yield and Quality Features of Buckwheat-Soybean Mixtures in Organic Agricultural Conditions النص الكامل
2017
Mustafa Sürmen | Emre Kara
Yield and Quality Features of Buckwheat-Soybean Mixtures in Organic Agricultural Conditions النص الكامل
2017
Mustafa Sürmen | Emre Kara
This study was carried out during the summer of 2014 to determine alternative quality forage sources that could be grown in the Aydın ecological conditions. In the study, effects of 3 different mixtures and 2 pure species (100% Buckwheat, 25% Buckwheat -75% Soybean, 50% Buckwheat -5 0% Soybean, 75% Buckwheat - 25% Soybean, 100% Soybean) and 2 different harvesting times (50%-100% flowering/buckwheat) on yield and quality characteristics were investigated. According to measurements, the highest average herbage yield was obtained from 75% Buckwheat-25% Soybean application (3100 kg/da) at 2nd harvest time. When the average of hay yield was examined, the results were similar to herbage yield. When ADF and NDF were examined, the highest values were seen at the 2nd harvest. When the crude protein ratios were examined, it was found that they decreased at the 2nd harvesting time and the highest value was determined at 100% soybean application at the 1st harvesting time (21.08%). When Digestible Dry Matter (DDM) and Relative Feed Value (RFV) were examined, the highest values were determined in 100%Soybean applications at first harvest time and when the mixture applications were examined, the highest values were determined to be 75% Buckwheat - 25% Soybean application. As a result of the study, it was determined that the yields obtained at the 2nd harvest time were higher but the forage quality decreased. When the mixtures were examined, it was determined that the mixture having the highest roughage value was 75% buckwheat + 25% soybean application. In this study, the buckwheat which have short vegetation and good quality and the soybean, which is infront of with high quality, mixtures were examined. It has also been found that these mixtures may be important for obtaining high-quality forage in the short and intermediate periods.
اظهر المزيد [+] اقل [-]Extracción y caracterización de aceite de semillas de zapallo النص الكامل
2009
Ortiz Grisales, Sanín(Universidad Nacional de Colombia Facultad de Ciencias Agropecuarias) | Pasos López, Sonia Carolina(Universidad Nacional de Colombia Facultad de Ciencias Agropecuarias) | Rivas Abadía, Ximena Constanza(Universidad Nacional de Colombia Facultad de Ciencias Agropecuarias) | Valdés Restrepo, Magda Piedad(Universidad Nacional de Colombia Facultad de Ciencias Agropecuarias) | Vallejo Cabrera, ¹Franco Alirio(Universidad Nacional de Colombia Facultad de Ciencias Agropecuarias)
Se seleccionaron 79 introducciones de zapallo (Cucurbita moschata Duch) teniendo en cuenta el contenido de extracto etéreo (EE) de las semillas. El EE fue estable física y químicamente, con propiedades organolépticas óptimas de aceite comestible, no presentó características de rancidez; aceite semisecante (122.90 mg/g de KOH.); índice de acidez 3.25 mg/g de KOH; la prueba presuntiva de yodo supone presencia de polinsaturación y sin formación de cristales. La composición de ácidos grasos mostró: palmítico C16:0 (25.11 - 36.94%); esteárico C18:0 (10.79 - 13.37%); linoleíco C18:2 (48.23 - 62.41%); linolénico C18:3 (0.66%) y araquídico C20:0 (0.53 - 0.78%). El aceite de semilla de zapallo contiene 55.28% de ácidos grasos insaturados con una cantidad apreciable de linoleíco (55.11%). La torta de semilla presentó proteína (51.11 ± 0.95%) y energía (4604. 66 ± 134.08 kcal/kg). | In accordance with of ethereal extract (EE) of seeds 79 varieties of squash was selected. The EE was physical and chemically stable, with good organoleptic properties of edible oil: no rancidity character was present; saponification index was 122.90 mg KOH/g characteristics of semi dried oil; acid index was 3.25 mg KOH/gm typical of edible oil. The iodine presumptive test revealed the presence of polyunsaturation and the absence of crystals. The composition of fatty acid revealed: Palmitic acid C16:0 (25.11 - 36.94%); Stearic acid C18:0 (10.79 - 13.37%); linoleic acid C18:2 (48.23 - 62.41%); linolenic acid C18:3 (0.66%); arachidic acid C20:0 (0.53 - 0.78%). The extracted oil from squash seeds contained 55.28% of unsaturated fatty acid with an appreciable amount of linoleic acid (55.11%). The squash oilseed cake presented a protein (51.11 ± 0.95%) and energy (4604. 66 ± 134.08 kcal/kg).
اظهر المزيد [+] اقل [-]Extracción y caracterización de aceite de semillas de zapallo النص الكامل
2009
Valdés Restrepo Magda Piedad | Vallejo Cabrera Franco Alirio | Ortiz Grisales Sanín | Pasos López Sonia Carolina | Rivas Abadía Ximena Constanza
Se seleccionaron 79 introducciones de zapallo (Cucurbita moschata Duch) teniendo en cuenta el contenido de extracto etéreo (EE) de las semillas. El EE fue estable física y químicamente, con propiedades organolépticas óptimas de aceite comestible, no presentó características de rancidez; aceite semisecante (122.90 mg/g de KOH.); índice de acidez 3.25 mg/g de KOH; la prueba presuntiva de yodo supone presencia de polinsaturación y sin formación de cristales. La composición de ácidos grasos mostró: palmítico C16:0 (25.11 – 36.94%); esteárico C18:0 (10.79 – 13.37%); linoleíco C18:2 (48.23 – 62.41%); linolénico C18:3 (0.66%) y araquídico C20:0 (0.53 – 0.78%). El aceite de semilla de zapallo contiene 55.28% de ácidos grasos insaturados con una cantidad apreciable de linoleíco (55.11%). La torta de semilla presentó proteína (51.11 ± 0.95%) y energía (4604. 66 ± 134.08 kcal/kg)
اظهر المزيد [+] اقل [-]Türkiye’de Organik Koyun ve Keçi Yetiştiriciliğinin Mevcut Durumu ve Gelişim Stratejileri النص الكامل
2017
Ayhan Ceyhan | Vecihi Aksakal | Gürsel Dellal | Mehmet Koyuncu | Nedim Koşum | Turgay Taşkın
Dünyada artan nüfusun sağlıklı ve dengeli beslenmesi amacıyla tarımsal üretimde konvansiyonel üretim biçimi yaygın olarak yapılmaktadır. Ancak bitkisel ve hayvansal üretimde verimi artırmak ve hastalıklarla mücadele etmek amacıyla kullanılan kimyasal maddeler su ve toprağa geçerek insan ve hayvan sağlığını etkilemektedir. Günümüzde Avrupa Birliği (AB) ülkeleri, Amerika Birleşik Devletleri (ABD), Japonya, Kanada ve Avustralya gibi gelişmiş ülkeler başta olmak üzere dünyadaki tüketiciler çevreye zarar vermeyen, insan ve hayvanlar üzerinde olumsuz etki yapmayan tarım ürünleri tüketim yönünde taleplerde bulunmaktadırlar. Koyun ve keçi yetiştiriciliği hem ülkemizde hem de dünyada organik hayvansal et ve süt üretiminde tüketicilerin taleplerini karşılamada önemli rol almaktadır. Dünyada 2012 yılında organik sertifikalı sığır, koyun ve domuz sayısı sırasıyla; 4,6, 5,6 ve 1,0 milyon baştır. Avrupa Birliği (AB)’inde bulunan 28 ülkenin 2015 yılında organik sertifikalı sığır, domuz, koyun, keçi ve tavuk sayısı sırasıyla; 3,7, 0,978, 4,5, 0,718 ve 31,6 milyon baştır. Türkiye’de organik hayvancılıkta en önemli oransal artış keçi yetiştiriciliğinde gerçekleşmiş (%652,1), bunu sırasıyla kanatlı (%187,7) ve koyun (%22,3) yetiştiriciliği izlemiştir. Türkiye’de 2015 yılında üretilen organik süt üretiminin %2,6 koyundan ve %6,3’ü keçilerden, organik kırmızı et üretimini ise %38,2 koyundan ve %1,6 keçiden sağlanmaktadır.
اظهر المزيد [+] اقل [-]Effect of Climate Variability on Crop Income in Central Ethiopia النص الكامل
2017
Arega Shumetie Ademe | Belay Kassa | Degye Goshu | Majaliwa Mwanjalolo
Ethiopian agriculture is a vulnerable sector from effects of climate variability. This study identified how strong is the effect of climate variability on smallholders’ crop income in Central highlands and Arssi grain plough farming systems of the country. The unbalanced panel data (1994-2014) of the study collected for eight rounds analysed through fixed effect regression. The model result shows that successive increment of crop season rainfall keeping the temperature constant has negative and significant effect on households’ crop income in the study area. The crop income responds similarly for temperature increment if the rainfall remains constant. Given this, simultaneous increment of the two climate related inputs has positive and significant effect on crop income. Other variables like flood, frost, storm, and rainfall inconsistency in the onset and cessation time affected households’ crop income negatively and significantly. Similarly, draught power and human labour, which are critical inputs in the crop production of Ethiopian smallholders, have positive and significant effect on crop income as to the model result. Thus, this study recommended that there should be supplementing the rainfall through irrigation, check dam and other activities to have consistent water supply for the crop production that enable smallholders to collect better income. Additionally, negative effect of temperature increment should be curved through adopting long lasting strategies like afforestation.
اظهر المزيد [+] اقل [-]Assessment of Nutrient Contents of Modified Finger Millet (Eleusine coracana) Starch النص الكامل
2017
Tukura Bitrus Wokhe | Florence Nkiruka Obelle | James Ukamaka Okere
Modification processes can change the physicochemical and structural properties of native starch, thereby increasing its industrial applications. Finger millet starch (FMS) was modified with casava starch (CS), guar gum (GG) and xanthan gum (XG) modifiers at the ratios of 95:5%, 90:10%, 80:20% and 75: 25%, for each of the modifier. The proximate and mineral compositions of the modified starch were determined using standard methods. Atomic absorption spectrometry method was used to quantify the mineral contents of the modified starch. Proximate contents of the modified FMS starch varied according to the type of the modifier and FMS/modifier ratios. Concentrations of carbohydrate in CS (66.97±0.03%), GG (64.42±0.05%) and XG (64.64 ± 0.01%) FMS modified starches were highest at 10%, 25% and 5% of the modifier contents repectively. The highest levels of fat in GG (8.91±0.02%), XG (7.89±0.01) and ash (3.55±0.02%) in CS modified starches were recorded when the quantity of the modifiers were increased to 25%. Fatty acid levels in the modified starches varied in the order of XG (7.74±0.03%) at 20% > GG (7.13±0.02%) at 25% > CS (5.14±0.20%) at 10%. At 25% modifier contents, levels of mineral element were highest in the modified CS and GG starches. Modifications decreased Mg, Mn, Fe, Zn, and Cu contents, while the concentrations Na, K, Ca and P increased. The modified starches can be used for production of some foods for specific health purposes.
اظهر المزيد [+] اقل [-]Effects of Some Breeding Criteria on Financial Evaluation Indicators for Dairy Cattle Investment Projects النص الكامل
2017
Adnan Ünalan
This study was conducted with the aim of determining the probable effects of different real interest rates (RIR: 5, 6 and 7%), some key breeding criteria such as calving rate (CR: 80, 85 and 90%) and mean lactation milk yield per milking cow (MLML: 5000, 6000 and 7000 kg) on the financial evaluation indicators such as Benefit Cost Ratio (BCR) for a dairy cattle farm investment project taken as model, consisted of 100 heads of Holstein cows, which was established and operated during 20 years period in Turkey. In the study, firstly, current investment and annual operating costs for that kind of dairy cattle farm were determined according to optimal workmanship, housing, maintenance, feeding and health protection and then revenues were calculated from current sale prices of raw milk, slaughtered/breeding animal and manure. For each assumed different real interest rate, calving rate and mean lactation milk yield per milking cow, the parities of unit (1 kg) sale price of raw milk to unit (1 kg) cost of concentrate feed (M/F-parity) (current unit cost of concentrate feed was assumed as to be 1.00 Turkish Lira (TL) were calculated to make BCR that is one of the financial evaluation criteria for the investment projects, as to be 1.00. Calculations showed decreasing each 1% of the real interest rate in Turkey, increasing each 5% of calving rate and increasing each 1000 kg of mean lactation milk yield per milking cow had, separately, about 5-12% positive effect on the parity of unit (1 kg) sale price of raw milk to unit (1 kg) cost of concentrate feed.
اظهر المزيد [+] اقل [-]