WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection
Permanent URI for this collectionhttps://hdl.handle.net/11147/7150
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Article Effect of Methionine and Lysine Supplementation on Performance and Intestinal Morphometrics of Finisher Broiler Chickens Fed Diets Containing Processed Cassava Peel Meal(CSIRO Publishing, 2025) Adebowale, T.O.; Arowolo, M.A.; Adekola, M.; Adeleye, T.; Oke, O.E.Context: The current high prices of conventional feedstuffs in developing countries seems to warrant intensified efforts to find sustainable alternatives to the major feed ingredients that would support performance without compromising gut health, reduce cost of production and promote a sustainable environment. Aims: The aim of the study is to evaluate the performance and health-related responses of finisher broiler chickens to the dietary replacement of corn with processed cassava peel meal (high- quality cassava peel meal) at 50% inclusion level, supplemented with methionine and lysine. Methods: Three hundred and twenty Cobb500 broiler chickens were allocated to four dietary treatments on a weight equalization basis. Each treatment was replicated eight times. A control diet based on corn and soybean meal was formulated to meet the recommended digestible methionine and lysine specification of 4.0 and 0.96 g kg−1respectively (VenCobb 500 Broiler Management Guide, Cobb-Vantress Inc., Siloam Spring, AR) for the finisher phase. The corn in the control diet was replaced with cassava peel meal at 50% replacement level in three other treatments (Diet 2–4). Diets 2–4 were then formulated to contain 100%, 112.5% and 125% of the recommended digestible methionine and 100%, 106.25% and 112.5% of the recommended digestible lysine, yielding 4.0, 4.4, and 4.8 g kg−1digestible methionine respectively, and 0.96, 1.02, and 1.08 g kg−1digestible lysine respectively, for the finisher phase. Key results: The highest bodyweight gain, improved feed conversion ratio and increased duodenal and jejunal villus height:crypt depth ratio was found in birds fed Diet 4. The lactobacillus count was highest in birds fed Diet 4 and total bacteria counts was highest in birds fed Diet 2. The feed cost per kilogram weight gain was least for the birds fed diets containing the processed cassava peel meal. However, morphological changes were observed in the liver and intestinal tissues of the birds. Conclusion: The study showed that the adequate supplementation of methionine and lysine to processed cassava peel meal can improve production performance of finisher broiler chickens but may not prevent morphological changes in the liver and intestine of the birds. Implication: The result implied that processed and fortified cassava peel meal can reduce high dependence on maize in the production of finisher broiler chickens, while mitigating the enviromental challenges associated with the disposal of the agrowaste. The morphological changes in the liver and intestine of the birds require further investigation. © 2025 Elsevier B.V., All rights reserved.Review Citation - WoS: 3Citation - Scopus: 4Predictive Video Analytics in Online Courses: a Systematic Literature Review(SPRINGER, 2023) Yurum, Ozan Rasit; Taskaya-Temizel, Tuğba; Yildirim, SonerThe purpose of this study was to investigate the use of predictive video analytics in online courses in the literature. A systematic literature review was performed based on a hybrid search strategy that included both database searching and backward snowballing. In total, 77 related publications published between 2011 and April 2023 were identified. The findings revealed an increase in the number of publications on predictive video analytics since 2016. In the majority of studies, edX and Coursera platforms were used to collect learners' video interaction data. In addition, computer science was shown to be the top course domain, whilst data collection from a single course was found to be the most common. The results related to input measures showed that pause, play, backward, and forward were the top in-video interactions, whilst video transcript and subtitle were the least used. Learner performance and dropout were the primary output measures, whereas learning variables such as engagement, satisfaction, and motivation were investigated in only a few studies. Furthermore, most of the studies utilized data related to forums, navigation, and exams in addition to video data. The top algorithms used were Support Vector Machine, Random Forest, Logistic Regression, and Recurrent Neural Networks, with Random Forest and Recurrent Neural Networks being two rising algorithms in recent years. The top three evaluation metrics used were Accuracy, Area Under the Curve, and F1 Score. The findings of this study may be used to aid effective learning design and guide future research.Review Citation - WoS: 18Citation - Scopus: 18A Review on New Cobalt-Free Cathode Materials for Reversible Solid Oxide Fuel Cells(Chulalongkorn Univ, Metallurgy & Materials Science Research Inst, 2023) Akkurt, Sedat; Sındırac, Can; Özmen Egesoy, Tuğce; Ergen, EmreThe exponential growth in the requirement of fuel cells and batteries leads to increased demand for cobalt due to its common use in high-performance Li-ion batteries and high-temperature fuel cells/electrolyzers. This sharp increment in demand raises concern about the availability of limited reserves of cobalt which can impact the price of cobalt. Moreover, the geographic limitations of cobalt resources may endanger the whole supply chain. In addition to all those, huge moral issues of cobalt mining are also another problem. Hence, leading battery, fuel cells and electrolyzer manufacturers are looking for sustainable alternatives to reduce cobalt dependency. A more specific limitation is shown in Solid Oxide Fuel Cells (SOFCs) cathode materials that contain cobalt. Incompatibilities have already been observed between the cathode materials containing cobalt and the electrolytes in terms of the thermal expansion coefficient mismatch during the transition of the operating temperature from high to low. An advantage of low operating temperatures is the reduction of material costs compared to high temperature. Increasing the electrochemical performance of the cell and eliminating thermal expansion coefficient difference problems are in concert aimed at the development of cobalt-free cathode materials. Therefore, cobalt-free cathode materials are vital for the sustainability of SOFCs and green transition of the energy sector since they can be used as cathode and anode material in symmetrical SOFCs which is also known as reversible SOFC (RSOFC). In this review, we comprehensively summarize the recent advances of cobalt-free perovskite cathode materials for intermediate temperature RSOFCs.