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Türkiye’de Besiye Alınan Simmental, Aberdeen Angus, Hereford, Limousin ve Charolais Irkı Sığırların Besi Performansı ve Karkas Özellikleri 全文
2017
Serdar Duru | Halil Sak
Bu araştırmada, Simmental (SİM), Aberdeen Angus (ANG), Hereford (HER), Limousin (LİM) ve Charolais (CHA) ırkı sığırların besi performansı ve karkas özelliklerinin belirlenmesi amaçlanmıştır. Uruguay ve Fransa’dan 2015 yılında ithal edilen 10-12 aylık yaştaki 606 baş erkek sığır kullanılmıştır. Tüm hayvanlar yaklaşık 7-9 ay süren besi süresinde aynı rasyon ile sınırsız beslenmişlerdir. Hayvanlar Nisan-Haziran 2016 arasında kesilmişlerdir. Varyans analizi sonucunda ırk, besi başı ağırlığı (BBA) ve besi süresi (BS) incelenen özelliklerin çoğu üzerine etkileri önemli (P
显示更多 [+] 显示较少 [-]Agricultural Credit Market and Farmers’ Response: A Case Study of Turkey 全文
2017
Erdogan Gunes | Hormoz Movassaghi
Agriculture is an important sector in Turkey’s economy. Access to credit financing is critical for timely acquisition of different inputs, farm productivity, and ultimately farmers’ financial well-being. Historically, Ziraat Bank and Agricultural Credit Cooperatives, supported by Turkish government, have been the principle supplier of loanable funds in the agricultural sector. However, since 2000, many private banks have discovered the potential of this market and entered the competition. This study was designed to investigate the structure of the agricultural credit market in Turkey and identify factors that influence farmers’ preference among alternative lenders. It was found that although the 550 Turkish farmers surveyed had several options among lenders, low interest rates and attainable eligibility criteria emerged as the most important differentiators among banks. Results from the Analytic Hierarchy Process (AHP) demonstrate the rising role of private banks’ credit. However, Ziraat Banks’ subsidized credits still dominant and its composite weight is 30.74% of total amount of agricultural credit market.
显示更多 [+] 显示较少 [-]Determination of Ventilation Openings Ratio in Greenhouses under Mediterranean Climate Conditions 全文
2017
Abdullah Nafi Baytorun | Sait Üstün | Adil Akyüz | Derya Önder
Ventilation is one of the methods used to obtain the biological optimal point of environmental factors needed for the plants in greenhouses. In the greenhouses, air change coefficient must be more than 50 h-1 in order to supply effective air ventilation. Temperature differences like air change coefficient can be regarded as a criterion to determine efficiency of ventilation in the greenhouses. In this study, the temperature values were calculated by using energy balance and Bernoulli equation at different ventilation opening ratios (AV/AG) depending on climatic properties in the Mediterranean region (Antalya). If was found that, based on temperature and radiation values of Antalya province, 20% ventilation opening rate is sufficient in the roof area. A temperature difference (∆T) of 1K can be achieved with a 50% shading of radiation and a 20% ventilation opening in June in the Mediterranean region. However, additional cooling is necessary in the greenhouses around noon hours because outdoor temperature is greater than 30°C.
显示更多 [+] 显示较少 [-]The Effect of Different Current and Wave Type Electricity Values Used in Unconscious Pre-Slaughtering of Broilers on Carcass Defects and Quality Characteristics of Breast Meat 全文
2017
İhsan Bülent Helva | Mustafa Akşit
This study was conducted to determine the effects of electrical stunning including different currents (AC/pDC) and waves types (square, triangle and chirp) applied to unconscious to broiler chickens before slaughtering on carcass defects and breast meat quality characteristics. In this study were used 39-d-old (Ross 308) broiler chickens, from the same flock raised commercially under similar environmental and mean weight 2350 g. Six treatment groups were set up with 10 birds (5♀:5♂) each. A total of 60 broiler chickens were stunned with electricity at water bath for 5 s using AC and pDC currents at 200 Hz frequency and 120 mA/bird. After slaughtering, the amount of blood loss, vein hemorrhages in the carcasses, spot stains and fractures in the wing bones were detected in the chicks. In addition, pH and color values and water loss of breast meat were also examined. Electric current application did not cause any significant carcass defect in chickens. It was determined that triangular and chirp wave types caused more blood loss than square wave in chickens. The lowest water loss in breast meat was realized in the chirp wave type while pH15 value in the breast meat of chicks applied AC was found higher. It was determined that triangular and square waves in water baths and chirp wave type in individual applications were resulted in having more positive effects on the properties investigated.
显示更多 [+] 显示较少 [-]Effect of Some Abiotic Stress Factories on Savrun Spinach (Spinacea oleracea L.) 全文
2017
Nezahat Turfan
In this study were investigated that resistance to salinity, heavy metals, drought and calcerous stress in Savrun (Spinacea oleracea L.) spinach. For this aim, 5-6 leafed seedlings were exposed to NaCl (75, 150 and 225 mM); heavy metals (Fe, Ni and Zn 0.2 mg/L), drought (50%) and 0.2% CaCO3 applications for four weeks half-weekly which plants grown under controlled conditions. Depends on result chlorophyll a, chlorophyll b, total cclorophyll, carotenoids, β-caroten and lycopen increased in drought and CaCO3 treatments. Total soluble protein and GuPX activity were found higher in all stress treatments, proline content increased in NiCl2, 75 ve 150 mM NaCl treatments. While APX activity was higher in 75 mM NaCl and ZnCl2; CAT was higher in 150 mM NaCl and others stres treatments except drought. SOD activity were noted higher in drought, CaCO3 and 225 mM NaCl stresses groups. MDA content was lower in all treatments except FeCl3 and, H2O2 were lower in 225 mM NaCl and drought while it was higher in others. As a result, it was found that tolerance of Savrun spinach is higher to CaCO3 and drought but sensitivity of it is higher to 225 mM NaCl, ZnCl2 and FeCl3. Also it was determined that Savrun genotype is moderate tolerance to NiCl2 and 75 Mm NaCl. However parameters of tolerance to stress that treated on spinach seedling showed variability in Savrun spinach.
显示更多 [+] 显示较少 [-]Evaluation of Production Process and Capacity Utilization of Olive Oil Mills in Turkey 全文
2017
Selda Murat Hocaoglu | İrfan Baştürk | Betül Hande Gürsoy Haksevenler | Cihangir Aydöner
In this study, a survey and data assessment has been made to clarify the status of olive oil mills which operate in Turkey. According to the study, there have been around 1000 commercial olive oil mills that mostly small and medium-sized and about 1 million tons of olives at these mills have been processed in our country seasonally and total maximum capacity of the olive oil mills was estimated to be about 5 million tons of olive oil. The average capacity utilization rate of the sector is also around 20%. About 71% of olive oil mills have three-phase decanter, 27% of them have two-phase decanter and 2% are operated as press extraction process. On the other hand, 78% of three -phase decanters used in olive oil mills can easily convert to 2-phase systems without loss of capacity and efficiency, but only 2% of them cannot be convert to two-phase systems. Approximately 89% of the olive oil mills are stored the olive oil mill wastewater in the evaporation lagoons.
显示更多 [+] 显示较少 [-]Yerli ve Yabancı Ticari Kahverengi Yumurtacı Tavukların Serbest (Free-Range) Yetiştirme Sisteminde Verim Özelliklerinin Karşılaştırılması 全文
2017
İsmail Türker | Sezai Alkan | Serpil Akçay
Araştırma serbest sistem yumurta tavukçuluğunda kullanılacak uygun tavuk materyalini belirlemek üzere yürütülmüştür. Bu amaçla yerli kahverengi yumurtacı Atak-S genotipi ile YB kodu verilen yabancı kahverengi ticari yumurtacı genotip verim ve yumurta özellikleri bakımından karşılaştırılmıştır. Araştırmada her bir genotipten 150’şer adet olmak üzere toplam 300 adet tavuk kullanılmıştır. Her genotip kendi arasında üç parsele ayrılmış ve her parselde 50 tavuk barındırılmıştır. Derin altlıklı yer sistemli kümes içerisinde birim alanda (m2) 5 tavuk yetiştirilirken, otlatma alanında ise tavuk başına 4 m2 alan ayrılmıştır. Aynı gün kuluçka çıkışı yapılmış olan yarkalar 16 haftalık yaşta özel bir firmadan temin edilmiştir. Araştırma 80 haftalık yaşa kadar sürdürülmüş olup bu süre zarfında verim ve yumurta kalite özellikleri tespit edilmiştir. Bu özelliklerden, %50 yumurta verim yaşı, yumurta ağırlığı, tavuk-gün yumurta verimi, tavuk-kümes yumurta verimi, yaşama gücü, ak indeksi, sarı indeksi, haugh birimi ve sarı rengi bakımından genotipler arasında farklılık bulunmamıştır. Buna karşın, 18-80. hafta canlı ağırlığı, yem tüketimi, yemden yararlanma oranı, şekil indeksi, kabuk kalınlığı, kabuk direnci, et-kan lekesi oranı ve kabuk rengi bakımından ise genotipler arasındaki farklılığın önemli olduğu tespit edilmiştir. Araştırmada, genotiplerden herhangi birisinin bütün özellikler bakımından öne çıkmadığı belirlenmiştir. Ancak, piyasa şartları dikkate alınarak yapılan ekonomik analiz sonuçları ve hayvan hassasiyetleri bakımından yapılan gözlemler neticesinde Atak-S genotipinin serbest sistem yumurta tavukçuluğuna daha uygun olduğu sonucuna varılmıştır.
显示更多 [+] 显示较少 [-]Characterization of Rhizobia from Root Nodule and Rhizosphere of Lablab purpureus and Vigna sinensis in Bangladesh 全文
2017
Safirun Pervin | Bushra Jannat | Sohana Al Sanjee
Nitrogen fixation resulting from mutual symbiosis of rhizobia and cultivated legume plants is therefore critical to food security as it directly affects agricultural production. Biological Nitrogen Fixation (BNF) can be an important factor in sustainable agriculture.The isolation and identification of different slow growing and fast growing rhizobial strains from the nodules of two leguminous plant species. Symbiotic nitrogen fixing Rhizobium spp. was isolated from (Lablab purpureus and Vigna sinensis). Nodules samples were collected from plants growing in different Districts of Bangladesh and the Glucose-Peptone Agar (GPA), Congo red, Yeast Mannitol Agar (YMA) containing 2% NaCl were employed to make presumptive decisions on the recognition and classification of the isolated bacterial strains. All the isolates were found with poor absorption of dye Congo red and little or no growth on the media of GPA and without altering the pH. Almost all of the isolates exhibit growth on 2% NaCl, poor growth on GPA, thus confirming the rhizobia. After biochemical tests like catalase test and citrate utilization test isolates were confirmed as Rhizobia. The presence of rhizobia on root nodules of leguminous Plant. Not only the leguminous Plant but also the rhizosphere contains rhizobia which help in soil fertilization.
显示更多 [+] 显示较少 [-]Late Blight of Potato (Phytophthora infestans) I: Fungicides Application and Associated Challenges 全文
2017
Abdul Majeed | Zahir Muhammad | Zabeeh Ullah | Rafi Ullah | Habib Ahmad
Potato (Solanum tuberosum L.) has been remained an important agricultural crop in resolving global food issues through decades. The crop has experienced enormous growth in terms of production throughout the world in recent decades because of improvement in agricultural mechanization, fertilizers application and irrigation practices. Nevertheless, a significant proportion of this valuable crop is still vulnerable to losses due to prevalence of different viral, bacterial, fungal and nematodes infestations. Late blight, caused by Phytophthora infestans (Mont.) de Bary, is one of the most threatening pathogenic diseases which not only results in direct crop losses but also cause farmers to embrace huge monetary expenses for disease control and preventive measures. The disease is well known for notorious ‘Irish Famine’ which resulted in drop of Irish population by more than 20% as result of hunger and potato starvation. Globally, annual losses of crop and money spend on fungicides for late blight control exceeds one trillion US dollars. This paper reviews the significance of late blight of potato and controlling strategies adopted for minimizing yield losses incurred by this disease by the use of synthetic fungicides. Advantages and disadvantages of fungicides application are discussed.
显示更多 [+] 显示较少 [-]Research on Possible Effects of Acrylamide and Vitamin E Administered to Pregnant Rats on Placenta Tissue 全文
2017
Mehmet Erman Erdemli | Eyüp Altınöz | Zeynep Aksungur | Zümrüt Doğan | Harika Gözükara Bağ | Yusuf Türköz
Investigate the changes that occur in the placenta tissues of pregnant rats that were administered acrylamide (AA) and vitamin E as a protective agent during pregnancy. Thirty rats that were proven positive for pregnancy with vaginal smear test were randomly distributed into control, corn oil, vitamin E, acrylamide and vitamin E + acrylamide groups. Pregnant rats were decapitated on the 20th day of the experiment. Malondialdehyde (MDA), reduced glutathione (GSH), total antioxidant capacity (TAS), total oxidant capacity (TOS) and Xanthine oxidase (XO) levels were measured in placenta tissues. It was determined that acrylamide application during pregnancy statistically significantly increased MDA, TOS and XO levels and reduced GSH and TAS levels in the placenta tissue of pregnant rats when compared to all other groups, and GAS and TAS levels statistically significantly increased in vitamin E administered group when compared to all other groups and TOS and XO levels were decreased to control group levels. It was observed that orally administered AA changed the antioxidant / oxidant equilibrium favoring the oxidants by increasing MDA, XO and TOS levels in pregnant rats and caused oxidative stress, while vitamin E administration returned the antioxidant / oxidant equilibrium back to normal levels, preventing oxidative stress induced toxicity.
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