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Major Sorghum Production Constraints and Coping Mechanisms: The Case of Anthracnose (Colletotrichum sublineolum) Full text
2021
Kebede Dessalegn Lemu | Peter Ogbonna | Christian Agbo | Dagnachew Lule
This paper attempts to review the major sorghum production constraints, the progress and perspective on sorghum anthracnose (Colletotrichum sublineolum) resistance breeding. The importance of anthracnose in sorghum production and breeding for resistance status and progress were also primly discovered. Sorghum is an ancient environment resilient crop and believed to be a future crop due to its important merits like tolerant to stresses, wide adaptability and low input requirement. Insects and disease are major biotic impediments to realizing the yield potential of the crop. Anthracnose disease caused by Colletotrichum sublineolum is the most important disease that severely affecting the crop in all sorghum producing regions of the world. Research results revealed that anthracnose resulted in 30-50% or greater yield losses. Several management strategies such as, cultural, chemical and using resistance varieties have been developed. Employing host-plant resistance is the most economical and environmentally friendly approach which can successfully control the disease. Breeding assisted with molecular markers plays a great role in resistance breeding programme as it makes easy to screen large number of genotypes at once. Recent advancement of molecular breeding and bio-informatics tools are playing a significant role in efficiencies and precisions of resistance breeding. QTLs or genomic area for resistance were identified using traditional molecular markers and recent research results revealed discoveries of specific gene and locus using high throughput markers like SNPs using GWAS approach. The discovery of genes/QTL associated with the resistance trait, using the high through put molecular markers like SNPs, facilitates the easiest way for gene pyramiding from different individual genotypes to a single variety, introgression into adapted elite cultivar through marker assisted and editing genes for elite landraces to develop durable resistance varieties. Transgenic approach is now a day becoming a powerful tool to utilize novel alien genes for crop improvement including anthracnose resistance breeding in sorghum.
Show more [+] Less [-]Phenotypic Characterization for Identification, Conservation and Sustainable Utilization of Boset and Minjar Shenkora Goats of Ethiopia Full text
2021
Tesfalem Aseged Ayele | Abraham Assefa | Abebe Hailu | Tesfaye Getachew | Manaye Misganaw | Seble Sinke | Fasil Getachew | Solomon Abegaz
This study was conducted on a total of 776 goats (part of Central highland goat breeds of Ethiopia), 306 from Boset district of Oromia region and 470 were from Minjar Shenkora district of Amhara region. A format developed by using food and agriculture organization discerption list was used for recording of morphological traits, bodyweight and linear body measurements. Both qualitative and quantitative traits were recorded from randomly sampled mature goats and the data were analyzed using SAS software. The goat type in the study area was characterized by a higher proportion of plain coat color patterns (62.5). Ingeneral, the majority (98.4%) of the studied goats were horned and characterized by backward orientation (67%) with a straight shape (49.3%). They presented a concave facial profile (73.8%), slop up toward the rump back profile (66.2%), no wattle (99.6%), no toggle (90.7%), no ruff (85.9%) and no beard (57.3%). The location had a significant effect on body weight and some other linear body measurements. Traits like body length, rump length, horn length, head length, head width and shin circumference were significantly higher in Boset district. In contrast, rump width and cannon bone length were significantly lower. The mean body weight of male goats in Boset and Minjar Shenkora district were 30.5±1.05 kg with a range of 16 to 47 and 27.5±0.56 with a range of 13 to 57, respectively. While for female counterpart mean body weights (kg) were 28.4±0.35 with a range of 17 to 45 for Boset and 27.5±0.33 with a range 15 to 57 for Minjar Shenkora district. Heart girth had the highest correlation with body weight in both sexes and shoulder width in Boset male goats. The wider variation in most quantitative measurement traits would open an opportunity for further improvement, conservation and utilization work.
Show more [+] Less [-]Circular Economy and its Prospects in Nepalese Agriculture Full text
2021
Santosh Kumar Bhattarai | Suman Bhattarai | Chandan KC | Arun GC
‘Circular economy’ in agriculture centres on the production of agricultural commodities using a minimal amount of external inputs, closing nutrient loops and reducing negative discharges to the environment (in the form of wastes and emissions). This can be achieved through the (re)design of maintenance, repair, reuse, remanufacturing, refurbishing, and recycling. Under the principles of CE, products and materials approaching their end-of-life stage can be regenerated or restored or replaced. Circular agriculture is aimed at closing the loop of materials and substances, and reducing both resource use and discharges into the environment. New measures like environmental taxes, insurance for liability resulting from environmental damage, cap and trade system and environmental labelling can be explored to promote transition of a current linear model to a circular one. The circular economy in Nepal is in infant stage and there is plenty of works to be done in this sector. The results of the paper will be instrumental for the transition of Nepalese agricultural sector to a more circular one.
Show more [+] Less [-]Gıda Mühendisliği Öğrencilerinin Gıda Güvenliği Hakkında Davranış ve Risk Algıları: Hatay Mustafa Kemal Üniversitesi Örneği Full text
2021
Ahmet Duran Çelik
Gıda güvenliği her tüketiciyi ilgilendiren önemli bir konudur. Gıda güvenliğinin sağlanması açısından gıda ürünlerinin üretim aşamasında alınacak önlemlerin yanı sıra tüketicilerin bilinç seviyesi de ayrıca önem taşımaktadır. Bugüne kadar yapılan çeşitli araştırmalarda, gıda zehirlenmelerinin veya gıdaya bağlı olarak ortaya çıkan çeşitli hastalıkların önemli bir kısmının evde yapılan yanlış gıda uygulamalarından kaynaklandığı belirlenmiştir. Bu araştırmada, gıda mühendisi adaylarının, gıda güvenliği konusunda bilgi seviyelerinin, tutum, yaklaşım ve risk algılarının belirlenmesi amaçlanmıştır. Araştırma sonuçlarına göre, görüşülen öğrencilerin %74,79’inin alışveriş sırasında ‘’her zaman’’ gıda ürünlerinin son kullanım tarihlerine baktıkları, et ürünleri satış yeri olarak en çok süper marketlere güvendikleri, genetiği değiştirilmiş ürünleri en riskli ürün grubu olarak değerlendirdikleri belirlenmiştir.
Show more [+] Less [-]Yumurtacı Tavuk Rasyonlarına Spirulina platensis İlave Edilmesinin Yumurta Kolesterol Seviyesi ve Yağ Asit Kompozisyonuna Etkisi Full text
2021
Meltem Tufan | Hasan Rüştü Kutlu
Spirulina platensis tek hücreli, fotosentetik bir mikroalg türüdür. Hem insan hem de hayvan tüketimi için protein ve fonksiyonel gıda katkı maddesidir. Yapısında keşfedilen değerli fitonütrientler ve pigmentler sayesinde sağlıklı beslenme, nutrasötik ve farmasötik alanda yoğun ilgi görmüştür. %5-6 toplam lipit oranının, %1,5-2 oranında çoklu doymamış yağ asitleri içeren (PUFAs) Spirulina, toplam PUFAs değerinin %36’sı kadar α-linoleik asit içermektedir. Ayrıca Linoleik Asit, Stearidonik Asit, Eikosapentaenoik Asit, Dodosaheksaenoik Asit, Araşidonik Asit gibi kıymetli yağ asitlerini de içermektedir. Bu çalışmada kahverengi yumurtacı tavuk (ATAK-S) yemlerine ilave edilen Spirulina ununun yumurta sarısı yağ asit kompozisyonu ve yumurta sarısı kolesterol seviyesine etkisi belirlenmiştir. 72 adet benzer canlı ağırlıkta 38 haftalık yumurtacı tavuk, her birinde 18 hayvan bulunacak şekilde 4 gruba rastgele dağıtılmıştır. Bireysel kafes sisteminde barındırılan tavuklar 8 hafta süreyle denemede tutulmuş ve %0 (Kontrol), %0,5, %1, %2 (%KM’ de) Spirulina unu içeren standart yumurtacı tavuk yemleriyle beslenmiştir. Deneme süresince 16:8 saatlik aydınlık:karanlık aydınlatma periyodu uygulanmıştır. Yem ve su ad libitum verilmiştir. Deneme sonucunda kontrol grubu ile kıyaslandığında, muamele grupları yumurta sarısı kolesterol miktarları arasındaki fark istatistiki açıdan önemsiz bulunmuştur. Yağ asidi komposizyonuna ilişkin elde edilen bulgulara göre rasyona ilave edilen Spirulina unu gruplar arasında linolenik asit miktarları üzerine etkili olmuştur.
Show more [+] Less [-]The Effect of Evening Primrose (Oenothera biennis) on the Some Biochemical Parameters in Rats with Gentamicin Induced Nephrotoxicity Full text
2021
Murat Medineli | Handan Mert | Kıvanç İrak | Nihat Mert
In this study, it was aimed to investigate the effect of evening primrose oil (EPO) on some biochemical parameters on nephrotoxicity induced by gentamicin (GM) in rats. The rats used in the study were randomly divided into 4 groups each consisting of 8 rats. The control group, EPO group, GM group and GM+ EPO group. The blood samples were taken 24 hours after the 8-day trial and kidneys were removed and saved for histopathological and PGE2 analysis. The serum creatinine, BUN, calcitriol, Ca, Na, Cl, K and P analyzes were performed via autoanalyser. PGE2 analysis was performed in kidney tissue via ELISA. Histopathological examination of the kidney tissues was performed. The levels of creatinine, BUN and Cl were significantly decreased and PGE2 and Ca increased in GM + EPO compared to GM group. The changes in the biochemical parameters examined and the histopathological findings obtained, it can be said that the EPO weakens the nephrotoxic damage caused by GM and has the protective effects on the kidney.
Show more [+] Less [-]Environmental Enrichments in Laying Hen Production Systems with Emphasis on Welfare and Egg Quality Full text
2021
Brian Tainika | Ahmet Şekeroğlu
To improve hen welfare, several studies have investigated various environmental enrichments that suit different laying hen production systems. The positive results of these studies can enable such environmental enrichments to be utilized in commercial laying hen production. This paper reviewed the effects of environmental enrichments in different laying hen production systems on hen welfare and egg quality. The successfully proven environmental enrichments in free-range production system include forage, shelterbelt, and artificial shade in outdoor area and novel objects and H-shaped perching structures in indoor. These are associated with increased range use that positively affects hen welfare. In aviary system, perches, and litter materials (e.g., straw, sand) as environmental enrichments are linked to improved behavioral expression, reduced stress, and enhanced immune system. Under the litter system, environmental enrichment with substrates (e.g., pecking stones, alfalfa blocks, silage, straw, barley) has been found to increase the foraging behavior of laying hens. This reduces severe feather pecking thus, improving the plumage condition of hens. Although the effects of environmental enrichments on hen welfare have been assessed and scientifically proven in the reviewed studies, significant progress of their impact on egg quality traits has not been reported. The studies have shown that environmental enrichments have no significant effect on egg quality traits. Also, appropriate pasture or plant species as environmental enrichments in free-range production system in relation to hen welfare and egg quality have not been identified. Therefore, it is important to continue studies on environmental enrichments while emphasizing their influence on egg quality since it is a major performance trait in the egg industry. In addition, there is a need for studies to identify ideal pasture or plant species for free-range production system that positively affects hen welfare and egg quality.
Show more [+] Less [-]Türkiye’de Yağlık Ayçiçeği Üretiminin Analizi Full text
2021
Arif Semerci | Eylem Durmuş
Yağlı tohumlu bitkiler, Türkiye’de arz açığı yüksek olan ürün gruplarından biridir. 2018 yılı verilerine göre Türkiye’nin sadece ayçiçeği ve ayçiçek yağı ithalatı için ödemiş olduğu tutar 762 milyon ABD$’dır. Aynı yılın verilerine göre Türkiye’nin yağlı tohumlar üretim miktarı yaklaşık 4 milyon ton olup, üretimden ayçiçeğinin aldığı pay ise %48,62’dir. 2018 yılında ülke yağlık ayçiçeği üretim alanı yaklaşık 650 bin ha, üretim miktarı 1,8 milyon ton ve verim değeri de 277 kg/da olarak gerçekleşmiştir. Ülke genelinde ilk beş sırada yer alan illerin toplam yağlık ayçiçeği ekim alanı ve üretim miktarındaki payı yaklaşık %70 düzeyindedir. Birim alandan elde edilen verim değerinde Konya 408 kg/da ile ilk sırayı alırken, ekim alanı en yüksek il olan Tekirdağ ilinde değer 235 kg/da düzeyindedir. Türkiye’de 1998-2018 arası dönem dikkate alındığında, yağlı tohumlar üretiminde %66,43 oranında artış sağlanmış olup, bu artışta üretim miktarı bakımından en önemli değişim %126,65 pay ile ayçiçeğinde gerçekleşmiştir. Zira, bu dönemde yağlık ayçiçeği verim değeri 146,76 kg/da’dan 277,00 kg/da düzeyine ulaşmıştır. Türkiye’nin yağlık ayçiçeği üretiminde kendine yeterlilik oranı %64,30 olup, önemli düzeyde arz açığı mevcuttur. Yağlık ayçiçeği üretiminde üretici geliri üzerinde en etkili destekleme uygulaması fark desteği uygulaması olmasına rağmen 2017-2019 döneminde ilan edilen birim fiyat değerinde bir değişiklik olmamıştır. 2018 yılında Türkiye’de yağlık ayçiçeği ortalama verim değerinin 277 kg/da olduğu dikkate alındığında fark desteği uygulamasının yağlık ayçiçeğinde üretim değerini birim alanda 110 TL/da artırmaktadır.
Show more [+] Less [-]Effect of Different Inorganic Substrates on Growth Performance of African Catfish (Clarias gariepinus, Burchell 1822) and Lettuce (Lactuca sativa L.) Full text
2021
Murat Yeşiltaş | Mehmet Ali Turan Koçer | Hüseyin Sevgili | Edis Koru
Lettuce (Lactuca sativa L.) and African catfish (Clarias gariepinus) were preferred to grow in aquaponics due to their high and fast productivity growth. However, limited research was conducted on the impact on different inorganic substrates’ growth performance in aquaponics. In this study, lettuce’s growth performance was determined in four different kinds of inorganic substrates in Nutrient Film Technique (NFT) aquaponics by measuring final weight, daily growth rate, stem diameter, plant and root lengths, leaf number per plant and shoot/root ratio. Polyester fiber, rock wool, zeolite, and gravel were used as inorganic substrate materials. A constant flow rate of 0.3 L/min was maintained using with a submersible pump motor. At the end of the study, the African catfish’s feed conversion ratio was estimated to be 0.66, while the specific growth rate (SGR) was 2.3%. Total lettuce yields for polyester fiber, rock wool, zeolite and gravel were obtained as 5.072,22 kg/m2, 4.934,03 kg/m2, 6.067 kg/m2, and 5.382,64 kg/m2 respectively. There were statistically significant differences for daily growth rate between the inorganic substrates that the significantly highest values were recorded in the zeolite. The results revealed that initial plant length and shoot/root ratio were the significant factors on the growth performance for lettuce in aquaponic system tested. The best lettuce yield performance was observed in zeolite substrate but, economically available option was found as gravel for hydroponic troughs.
Show more [+] Less [-]Usage of Hypericum perforatum Microcapsules in the Production of Ayran (Drinking Yoghurt) Full text
2021
Fadime Seyrekoğlu | Hasan Temiz
H. perforatum, which is widely used in traditional medicine due to its bioactive compounds was extracted with ethanol-water (3:7). The extract was encapsulated with maltodextrin and gum arabic in a spray dryer in order to protect the phenolic compounds in its structure. Different amounts of microcapsules were added to our traditional drink, i.e. ayran (drinking yoghurt). The total phenolic content and DPPH radical scavenging activity of the microcapsules, extract of HP, and ayran samples were determined. The amount of total phenolic compounds in the microcapsule provided a superior effect than the extract. The ayran samples were supplemented with 2%, 3%, 4%, 5% and 6% of H. perforatum (HP) microcapsules and it is observed that total phenolic content (TPC) and DPPH radical scavenging activity indicated an increase with concentration. TPC and DPPH activity were determined as 256.94 mg GAE / 100mL and 78.05% for 6% of HP microcapsules supplemented samples. As a result of the sensory analysis, ayran samples which supplemented with 4% of HS microcapsule gained the highest scores by the panellists and received more appreciation than the control group. According to sensory analysis, HP4 (ayran produced with 4% HP added microcapsule) sample was determined as the best sample, while the HP6 (Ayran produced with 6% HP added microcapsule) sample had the highest scores in terms of DPPH scavenging activity and TPC results. The overall results of this study revealed that 4% HP supplemented ayran can be produced with its increased health benefits and desirable properties. In this study, the use of H. perforatum microcapsules in ayran, its effect on antioxidant and phenolic components, the usage rates and acceptability of microcapsules were investigated.
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