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Effect of Soaking and Boiling on Anti-nutritional Factors, Oligosaccharide Contents and Protein Digestibility of Newly Developed Bambara Groundnut Cultivars Texto completo
2017
Olaposi Adeleke | Oladipupo Qudus Adiamo | Olumide Samson Fawale | Gbeminiyi Olamiti
Newly developed Bambara groundnut (Vigna subterranea L.) seeds (Accessions No: TVSU 5 – Bambara Groundnut White (BGW) and TVSU 146 – Bambara Groundnut Brown (BGB)) were collected from International Institute of Tropical Agriculture (IITA), Nigeria, planted and harvested. The effects of processing methods (soaking and boiling) on anti-nutritional factors and oligosaccharides content and protein digestibility of BGW and BGB compared with Bambara groundnut commercial (BGC) seeds were investigated. Soaking and boiling significantly reduced the anti-nutritional factors of the samples and the effect increased as processing time was elongated. Sample BGC had lower anti-nutritional factors than BGW and BGB after soaking for 48 h. Tannin contents of the samples were reduced drastically by 99 % throughout the soaking periods. Greatest loss in raffinose level was observed in BGB (59%) and BGW (50%) after boiling for 60 min compared with BGC (43%). The loss in stachyose content of the samples varies with processing and BGC (59%) had greatest loss after boiling for 60 min while soaking for 48 h reduced that of BGB and BGW by 57 and 35%, respectively. Boiling for 60 min increased the in vitro protein digestibility of BGB (89.34 %) compared with BGW (87.48%) and BGC (82.89%). Overall, the results demonstrated that soaking and boiling of newly developed Bambara groundnut seeds could improve the nutritive quality of the seeds.
Mostrar más [+] Menos [-]Characterization of Rhizobia from Root Nodule and Rhizosphere of Lablab purpureus and Vigna sinensis in Bangladesh Texto completo
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.
Mostrar más [+] Menos [-]Determination of Malondialdehyde (MDA), Superoxide Dismutase (SOD) and Glutathione Peroxidase (GPx) Levels in Kangal Dogs with Maternal Cannibalism Texto completo
2017
Nazlı Ercan | Mustafa Koçkaya
Oxidative stress, which plays an active role in the pathogenesis of various diseases, continues to be relevant in assessing the condition changes such as aggression. Some of Kangal dogs have been found to eat their own puppies during their first 24 hours following birth, as a case called maternal cannibalism. The present study aims to determine the levels of serum malondialdehyde (MDA), which is a product of lipid peroxidation, and serum glutathione peroxidase (GPx) and superoxide dismutase (SOD) enzymes, which are the parameters of antioxidant defense system, and total protein and albumin levels and to show their relationship with cannibalism. The study material consists of blood and blood serum of 30 Kangal dog breed in total, 15 of which have maternal cannibalism and 15 haven’t observed maternal cannibalism as a control group. Glutathione peroxidase, superoxide dismutase, malondialdehyde levels were investigated by means of spectrophotometric method in blood serum of these animals. The difference between the mean values of total protein, GPx, SOD, MDA and albumin was statistically significant in the results obtained. These findings conclude that oxidative stress and antioxidative metabolism plays a role in the pathogenesis of cannibalism in dogs.
Mostrar más [+] Menos [-]Prevalence and Antimicrobial Susceptibility of Escherichia Coli O157 Isolated From Raw Milk Marketed in Chittagong, Bangladesh Texto completo
2017
Md. Kauser-Ul Alam | Shireen Akther | Nazmul Sarwar | Shamsul Morshed | Goutam Kumar Debnath
Escherichia coli is an emerging public health concern in most countries of the world. It is an important cause of food-borne human disease. The present study assessed the prevalence and determined the antibiotic resistance patterns of E. coli from raw milk marketed in Chittagong, Bangladesh. Of the raw milk marketed in Chittagong ~33(18%) of the 186 raw milk samples of it contains E. coli, indicator bacteria for any enteric pathogens. The mean viable count of total bacteria was 4.04×108 cfu/ml and the mean viable count of E. coli in the contaminated raw milk was 1.88×106 cfu/ml. E. coli from only six (18.2%) of the 33 positive samples yielded colourless colonies across the CT-SMAC, suggesting the probable presence of populations belonging to the serotype O157 and rest of the isolates 27 (81.82%) produced coloured colony on CT-SMAC considering the probable presence of populations belonging to the serotype non-O157. Growth of probable E. coli O157, as evidenced by the colourless colonies on CT-SMAC compared to coloured colonies from other bacteria. Confirmed isolates were further subjected to antimicrobial susceptibility test using the Agar disc diffusion technique. Antibiotics susceptibility profile showed that all the isolates in case of E. coli O157, penicillin (100%), tetracycline (100%), amoxicillin (83.33%) and erythromycin (83.33%) were the most resistant whereas ciprofloxacin (66.67%), gentamicin (50.0%), and streptomycin (50.0%) were the most sensitive antibiotics. In case of E.coli non-O157 susceptibility profile showed that chloramphenicol (40.74%), erythromycin (40.74%) and oxacillin (37.04%) were the most resistant whereas ciprofloxacin (70.37%), sulphamethoxazole/trimethoprim (S/T) (59.26%) and gentamycin (55.55%) were the most sensitive antibiotics. The antimicrobial resistance exhibited by E. coli O157and non-O157 strains in this study is an indication of possible antibiotic abuse.
Mostrar más [+] Menos [-]Organik Asitler ve Su Ürünleri Yetiştiriciliğinde Kullanımı Texto completo
2017
Ferbal Özkan Yılmaz | Arzu Özlüer Hunt
Organik asitlerin su ürünleri yetiştiriciliğinde, fonksiyonel yem katkı maddeleri olarak kullanılmasının öngörülebilir gelecekte belirgin bir şekilde artacağı düşünülmektedir. Dünya su ürünleri yetiştiriciliğinin sürekli genişlemesi, büyük bir pazar potansiyeli oluşturmaktadır. Bununla birlikte küresel ısınmanın bir sonucu olarak, su ürünleri yetiştiriciliğinde hastalık salgınlarında artma tehlikesi, önemli bir problem olarak ortaya çıkabilecektir. Birçok ülkede antibiyotik kullanımına ilişkin yasaklar veya kısıtlama uygulamaları bulunmaktadır. Su ürünleri yetiştiriciliğinde, antibiyotiklere karşı uygulanabilir bir alternatif olarak organik asitlerin kullanımının uygunluğunu, yapılan çalışmalar ile ortaya konulmaktadır. Organik asitler, antimikrobiyal özelliklerinden dolayı zararlı bakterilerin çoğalmasını engelleyerek, hayvanların gastrointestinal sisteminde yararlı bakterilerin büyümesini teşvik ederek, hayvanların sağlığını iyileştirme özelliklerini göstermektedirler. Yapılan çalışmalar, organik asitlerin fonksiyonel yem katkı maddeleri olarak, su ürünleri yetiştiriciliği endüstrisinde sürdürülebilir bir sağlık yönetimi programının bir parçası olarak kullanılabilirliğini ortaya koymaktadır.
Mostrar más [+] Menos [-]Effects of Kefir as a Probiotic Source on the Performance and Health of Young Dairy Calves Texto completo
2017
Sema Satık | Mevlüt günal
The aim of this study was to investigate the effect of kefir as a probiotic on the performance and health status of calves. Thirty Holstein female calves with 3-day-old were randomly allocated to three treatment groups: Control (without any probiotic), probiotic (a commercial probiotic mixture-3 g/d/calf bacteria-based and 2 g/d/calf yeast-based) and kefir (20 ml/d/calf). The calves were weaned at 56 days of age. The experiment was performed in 70 days. Treatment had no effect (P>0.05) on weaning and final body weight and starter intake. Although differences in weight gain were not significant (P>0.05), there were trend to increase by probiotic treatments during 0-14 days. Probiotic treatments tended to have a positive effect on the population of the fecal lactic acid bacteria at 14 days. The results of the study indicated that kefir as a natural probiotic in calf nutrition may be beneficial during the first weeks of life.
Mostrar más [+] Menos [-]The Effects of Plant Secondary Compounds on Herbivorous Insects Texto completo
2017
Oğuzhan Yanar | Elif Fatma Topkara
Plants have developed mechanical and chemical defense strategies that are effective against herbivores. Plants contain chemicals that are known as secondary metabolites (allelochemical) and these chemicals do not directly involve in organisms’ reproduction and growth, on the other hand, they affect survival, growth and behavior of species. These compounds usually take ecological tasks and plants use these compounds against diseases, parasites, and predators for interspecies competition. It is known through the observations on feeding of herbivorous insects that these compounds act as deterrent chemicals or they are toxic against them. Feeding is one of the most fundamental and the most important behaviors for herbivorous insects. Even though host plant preference of herbivores is partially depend on nutrients, this behavior greatly depends on secondary chemistry of plants. Effects of secondary compounds on herbivorous insects can be positive or negative.
Mostrar más [+] Menos [-]Control of Greenhouse Environmental Conditions with IOT Based Monitoring and Analysis System Texto completo
2017
Ali Çaylı | Adil Akyüz | Abdullah Nafi Baytorun | Sedat Boyacı | Sait Üstün | Fatma Begüm Kozak
Wireless sensor networks applications and inter-machine communication (M2M), called the Internet of Things, help decision-makers to control complex systems thanks to the low data-rate and cost-effective data collection and analysis. These technologies offer new possibilities to monitor environmental management and agricultural policies, and to improve agricultural production, especially in low-income rural areas. In this study, IoT is proposed with a low cost, flexible and scalable data collection and analysis system. For this purpose, open source hardware microprocessor cards and sensors are stored in the greenhouse computer database using the IEEE 802.15.4 Zigbee wireless communication protocol. The data can be analyzed by greenhouse computer analysis software, which is developed with the PHP programming language. It is possible to monitor the real time data from the greenhouse computer. Also alert rules definitions can be made and the system was tested in greenhouse conditions. It has been observed that it performs operations steadily such as data transfer, sensor measurements and data processing. The proposed system may be useful for monitoring indoor climate and controlling ventilation, irrigation and heating systems, especially for small enterprises due to the modular structure.
Mostrar más [+] Menos [-]Propolisin Genel Özellikleri ve Balıklarda Kullanımı Texto completo
2017
Muhammet Enis Yonar
Propolis, bitkilerin tomurcuk ve yaprak kısımlarından toplanan maddelerden bal arıları tarafından üretilen doğal reçineli bir karışımdır. Propolis antikanser, antiinflamator, antibiyotik, antioksidatif, antibakteriyel, antiviral, antifungal, anestetik, immunostimulan ve sitotoksik etkilere sahiptir. Bu derlemede doğal bir ürün olan propolisin fiziksel, kimyasal ve biyolojik özellikleri, bitkisel kaynakları ile balıklarda kullanımı ve uygulama şekiller hakkındaki bilgilerin bir araya getirilmesi amaçlanmıştır.
Mostrar más [+] Menos [-]Adıyaman İli Badem Üreticilerinin Zirai Mücadele Uygulamalarının Değerlendirilmesi Texto completo
2017
Oktay Erdoğan | Ela Tohumcu | Mehmet Fırat Baran | Osman Gökdoğan
Bu çalışmanın amacı, 2016 yılında Adıyaman ilindeki badem üreticilerinin zirai mücadele uygulamalarında karşılaştığı sorunları belirlemektir. Bu amaçla, basit tesadüfi örnekleme yöntemine göre Kahta, Besni, Gölbaşı ve Merkez ilçelerinde, her ilçede tesadüfi olarak seçilen 6 köy olmak üzere toplam 24 köyde, 96 üreticiden anket yöntemi ile bilgiler temin edilmiş ve sonuçlar yüzde oran olarak değerlendirilmiştir. Badem üreticilerinin, eğitim seviyesinin yüksek, pek çoğunun tarım dışı gelire sahip olduğu ve gelir miktarının açlık sınırı seviyesinin üzerinde olduğu saptanmıştır. Badem üreticileri pestisit seçimi ve pestisit dozunu belirlemede ilaç bayilerinden ve Tarım İl Müdürlüğünden tavsiye almakta, marka ve etkili maddenin pestisit seçiminde önemli faktörler olduğu, aynı hastalık ve zararlıya karşı sürekli aynı pestisiti kullanmadıkları, hastalık ve zararlıyı görmeden ilaçlama yaptıkları, ilaçlamada önerilen dozu uyguladıkları, kullandıkları pestisitlerin üründe kalıntı bıraktığı, ilaçlama ile hasat arasındaki bekleme süresine dikkat ettikleri, ilaçlama sırasında koruyucu elbise ve maske kullandıkları, boş pestisit kutularını tarla veya yol kenarına atmadıkları, ilaçlama aletini temizledikleri, ancak ilaçlama aletini kalibrasyon yapmadan kullandıkları, pestisitleri karışım halinde uyguladıkları, kimyasal mücadele dışında kültürel mücadeleyi tercih ettikleri ve biyopestisit kavramını bilmedikleri belirlenmiştir.
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