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Consumers’ Preference and Perception of the Different Broiler Housing and Feeding Systems Among Staff and Students in a State University (Eskişehir Osmangazi University) Полный текст
2020
Canan Kop Bozbay
In this study, an investigation of the preference and perception of the different broiler housing and feeding systems among staff and students of Eskisehir Osmangazi University, Turkey was undertaken. A structured questionnaire was administered with a face-to-face to 790 randomly selected respondents [257 academic staff (academicians), 166 non-academic staff (worker with a secondary school national graduate diploma) and 367 undergraduate students (students)]. Most respondents preferred chicken (63.3%) and beef (32.0%) meats to fish meat (4.7%). The number of academicians preferred broiler meat (16.8%) was lower than those of students (52.6%) and workers (30.6%). There were significant differences among respondents in terms of preference and perception of different production sources of chicken meat. The proportion of academicians who preferred conventional broiler meat (68.2%) was higher than students (25.4%) and workers (6.4%). The impact of mediatic information (disinformation) about broiler meat relating to ingredients and/or feed additives used in broiler nutrition was higher on academics and students compared to workers. The results of the study indicated that as the level of education increases, the negative perception increased due to false media reports about chicken meat production and subsequently, the preference for chicken meat decreased.
Показать больше [+] Меньше [-]Mathematical Modelling of the Volumetric Efficiency for Fluted Rolls Metering Different Crop Seeds Полный текст
2020
Muhammed Hakan Özdemir | Adnan Değirmencioğlu
The objective of this study was to develop a mathematical model for predicting the volumetric efficiency for fluted rolls metering different crop seeds. A special test stand was designed and manufactured in order to conduct experiments in order to find out the volumetric efficiency of the fluted rolls. In order to meet the above objective, alfalfa, barley, coriander, flax, oat, rye, safflower, sesame and wheat seeds were used. Experiments were conducted at different roll revolutions and roll lengths by considering the seed rate for each crop and the rolls were driven by a step motor as controlled by a software installed on a laptop computer. Five replications were achieved for each experiment and a total of 1660 flow rate data was obtained. Five different models for volumetric efficiency were developed. Analysis based on different goodness of fit criteria were achieved to compare models in to order to select the appropriate one. The study conducted not only resulted in developing volumetric efficiency models but also revealed an important finding based on low flow evenness (low CV, %) values obtained as compared to other studies in the literature.
Показать больше [+] Меньше [-]Application of Plasma Technology in Food Processing Полный текст
2020
Aslı Albayrak | Gülden Başyiğit Kılıç
Consumer demands for raw or unprocessed foods increased due to consumers’ awareness of the importance of a healthy life. However, searching alternative techniques instead of heat treatment is an important issue for the industry in order to enhance the microbiological quality. Non-thermal techniques are encouraged because of their effectiveness on the preservation of natural aroma, flavor and microbiological quality without causing any change in the structure of the product. Plasma technology is one of these alternative techniques. Plasma technology, known as the fourth state of matter, is known as the partial ionization of positive and negative ions, free radicals, charged particles and molecules in electron and photon form. Plasma is usually forms or formed by electric or electrical discharge or by a strong radiation effect. Plasma is classified according to its temperature, thermal equilibrium, and pressure. Cold plasma technique is used in foods for contaminated surfaces and cleaning of medical instruments. In this review, plasma technology applied to foods and their effects are presented.
Показать больше [+] Меньше [-]The Comparison of Effects of Supplementation of Zeolite and Yucca Schidigera Powder to Diet on Liver Enzymes (AST, ALT, GGT) in Sheep Полный текст
2020
Oğuz Kale | İbrahim Durmuş
The concern of utilizing native coraps as forage supplements instead of antibiotics has increased in order to manipulate rumen fermentation.The purpose of current work was to determine effects of co-addition zeolites of and Yucca schidigera (YS) plant containing high level of saponin to sheep feed on plasma Aspartat aminotransferaz (AST), ALT (Alanin aminotransferaz) and Gama glutamil transferaz (GGT) levels. A total of 24 sheep wereusedas 6 of eachgroup. Sheepwas fed foronemonth as control, supplementedwithZeolite (3%), Yuccaschidigera (YS, 1500 ppm) and Zeolite (3%) + YS (1500 ppm) to basal diet. When trial finished, plasma AST, ALT and GGT levels were determined in blood samples taken from all groups. In the study, detected supplement of zeolite and YS did not have an impact on ALT and AST, whereas zeolite additions decreased GGT levels. As a result; zeolite and YS supplementation applied in this study did not have a negative impact liver welfare sheep.
Показать больше [+] Меньше [-]Camel milk: As a New Protein Source to Use for Yoghurt Production Полный текст
2020
Selda Bulca | Atakan Koç
The main purpose of this study was to investigate the possibilities of technological production of camel milk yoghurt. First of all, denaturation of antimicrobial substances in camel milk by heat treatment and their effects on pH decrease and on the viscosity were analysed. Although the pH decrease was present, the viscosity of camel milk didn’t change. In the study, two different heat treatments (20 min at 90°C and 20 min at 95°C) were applied to camel milk and pH and SH (Soxhelet Henkel) values were determined until pH reached 4.7 during fermentation. After culture addition the pH drop was at 90°C for 20 minutes heat-treated camel milk slower than the camel milk heated at 95°C for 20 minutes. Similarly, the increase in SH in the cultured milk treated at 90°C for 20 minutes was slower than the increase in SH in the cultured milk treated at 95°C for 20 minutes. In the next study, viscosity and pH changes in yoghurt produced from cow and camel milk were compared. For this purpose, both milks were heat treated at 80°C for 20 minutes. After 180 minutes in cow’s milk, the viscosity was 9891 mPa.s, and after 210 minutes it reached 25237 mPa.s. In contrast, the viscosity in cultured camel milk was determined as 1210 mPa.s after 90 minutes, while the viscosity remained around 1216 mPa.s after 380 minutes. In the next study, for the production of yogurt from cow milk and camel milk were performed. Both milks were heat treated at 80°C for 20 minutes and changes in viscosity and drop of pH during fermentation were analysed. After the 180 minutes of fermentation in cow’s milk the viscosity came to 9891 mPa.s, after 210 minutes it was 25237 mPa.s. In contrast, after 90 minutes in the cultured camel milk, the viscosity was 1210 mPa.s, while after 380 minutes the viscosity reached to 1216 mPa.s. E. coli, L. bulgaricus and Listeria innocua were used to determine the antimicrobial effect of raw camel milk, cow milk, heat treated camel and cow milk camel colostrum. While camel milk and colostrum had inhibitory effect on E. coli, L. bulgaricus, Listeria innocua was not inhibited
Показать больше [+] Меньше [-]Novel Single Nucleotide Polymorphisms of Lysozyme (C-Type) Gene in Donkey (Equus Asinus) Populations in Marmara Province of Turkey Полный текст
2020
Raziye Işık
The major antimicrobial proteins in donkey milk are lysozyme, lactoferrin, lactoperoxidase and immunoglobulins. Lysozyme has an important role in the host defense by way it inhibits the pathogenic bacteria. The aim of this study is to investigate the Lysozyme (LYZ) gene polymorphism in 82 donkeys reared in Thrace region of Turkey. 716 bp long partial 5’ UTR, exon 1, intron 1, exon 2 regions of LYZ gene were amplified and PCR products were analyzed via DNA sequencing. Three novel single nucleotide polymorphisms (SNPs) were identified as g.1782775A>G, g.1782924A>G and g.1782960T>C in the first intron of LYZ gene. The partial DNA sequence of LYZ gene in donkeys was reported in the present study and sequences of LYZ were entered to NCBI Genbank database with the accession number: MK984689-MK984692. This SNP may have an effect on immune system and milk traits in donkeys and additional studies are needed to confirm this assumption for donkey breeding.
Показать больше [+] Меньше [-]The Effect of Pre-Harvest Gibberellic Acid Applications on-Tree Storability and Fruit Quality in 'Valencia Late' Orange Полный текст
2020
Gülendam Sezer | Adalet Mısırlı | Fatih Şen | Nihal Acarsoy Bilgin
In this study, it was aimed to determine the effects of gibberillic acid (GA3) applications on drop and quality changes of fruits on-tree storage period. GA3 (before peel color break, on the peel color break and both periods) and 20 ppm GA3 (before peel color break and on the peel color break) were applied to the trees, and the untreated trees constituted the control group. Fruits were harvested in five periods at monthly intervals from april. In the last harvest period, the average fruit drop rate was significantly higher in the control group (38.48%) than in the color transformation 10 ppm GA3 (9.44%) and before color transformation 20 ppm GA3 (19.28%). The fruit drop was not observed in the first and second harvest periods. Especially in the first period on-tree storage, the shell C* and h° values of the fruits in control were found higher than the GA3 application. As a result, twice application of 10 ppm GA3 in 'Valencia Late' orange reduced pre-harvest fruit drop, delayed peel color transformation and limited fruit quality change. Accordingly, it has been revealed that it allows on-tree storability until the end of august.
Показать больше [+] Меньше [-]Thiols and Their Uses in the Food Industry Полный текст
2020
İnci Cerit | Aslı Demirer | Eda Bülbül | Merve Yaman | Şeyma Nur Güngör | Omca Demirkol
Studies have shown that many of the synthetic additives which are added to food for different purposes have negative impacts on human health. For this reason, researchers have focused on natural additives that can replace with synthetic ones and positively affect health through their various functions. Biothiols have effects on color, taste and aroma in foods. In addition, they possess various functions in the prevention of cancer, Alzheimer's, Parkinson's, lung and heart diseases by decreasing oxidative damage with their antioxidant and protective effects. In this review, the studies about thiol contents of food, their functions and the possibilities of using thiols in the food industry instead of synthetic additives have been brought together.
Показать больше [+] Меньше [-]Diversity and Path Analysis of Chilli (Capsicum spp.) Based on Morphological Traits in Northern Region of Bangladesh Полный текст
2020
Deen Mohammad Deepo | Aniruddha Sarker | Suraiya Akter | Md. Mazharul Islam | Mahmudul Hasan | Naheed Zeba
Genetic variability, heritability, genetic advance, correlation coefficient analysis, path coefficient analysis and genetic divergence between yield and its contributing traits were estimated using fifteen (15) different chilli genotypes in northern region of Bangladesh. The aim of this study is to screen out suitable parents for next hybridization program. The phenotypic coefficient of variations was found slightly higher than the genotypic coefficient of variations for all characters studied, indicating that the apparent variation is not only genetic but also influenced by the growing environment in the expression of the traits. High genotypic and phenotypic coefficient of variation was observed in length of fruit (27.27% and 27.81%). High heritability coupled with high genetic advance in percent of mean in fruit yield per plant (71.23 and 39.38), number of fruits per plant (71.26 and 31.18), weight of individual fruit (88.52 and 43.80), length of fruit (96.13 and 70.59) and diameter of fruit (79.58 and 35.79) suggested that these characters would be considered for varietal selection. The correlation studies revealed that fruit yield per plant showed significant positive correlation with plant height (0.369), number of fruits per plant (0.587), weight of individual fruit (0.634) and length of fruit (0.450) which can be considered for selection of a good variety. Path analysis revealed weight of individual fruit (0.293), plant height (0.205), number of branches per plant (0.186), length of fruit (0.164), number of fruits per plant (0.132) and diameter of fruit (0.078) had direct positive effect on yield per plant, indicating these traits are the main contributors to fruit yield per plant. The divergence value for cluster analysis showed the highest inter-cluster distance between clusters II and IV which indicates that these genotypes may provide high heterosis in hybridization and expected to show wide variability in genetic architecture.
Показать больше [+] Меньше [-]Floristic Patterns and Qualities of Forage Species from Mountainous Rangeland in the Middle Black Sea Region of Turkey Полный текст
2020
İbrahim Aydın | Betül Pak | Duygu Algan | Nuh Ocak
This study was carried out to investigate the floristic features (family, preference by grazers, growth form and response to grazing) and qualities of forage species collected from mountainous rangeland (Akdağ Mountain, Ladik) in the middle Black Sea region of Turkey. Forage samples were collected five times by 15-day intervals from the before-flowering stage to the after-flowering stage in 2015 and 2016. The total number of species was 105 species belonging to 73 genera and related to 26 families. Of the total species, 20 were from Poaceae (19.0%), 30 were from Poaceae (28.6%). Rests of the species belonged to other families (52.4%) dominated by families such as Asteraceae (13/55) and Lamiaceae (6/55), of which 26 species were weeds harmful to animals. While the percentages of decreaser, increaser and invader species were 16.2, 12.4 and 71.4, those of annual, biennial and perennial species were 31.9, 2.9 and 65.2, respectively. The number of species preferred by grazing was 74 (70.5%), while the number of non-preferable species was 31 (29.5%). The ME (MJ kg-1), RFQ and quality category of legumes, grass, and other botanical families were found as 8.88±0.07, 130.9±3.05 and very good, 8.00±0.07, 83.2±1.62 and good, and 8.98±0.07, 141.0±3.62 and premium, respectively. These results can be used as a management tool to improve rangeland quality and sustainability. The evidence from this study is that floristic pattern is not merely a result of invader forage species, but also might be a beneficial result that deserves further study for mountainous rangelands.
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