Dinamika dan Transformasi Implementasi Evaluasi Pendidikan pada Masa Darurat Covid-19

The emergence of the Covid-19 pandemic on a global scale has caused major impacts on various sectors, including the education sector. In order to reduce the spread of Covid-19, many countries have implemented learning from home, distance learning or e-learning. Several online platforms that are widely used as learning media include Microsoft Teams, Google Classroom, and Canvas and Blackboard, which allow teachers to create learning development programs. These online platforms have various features including chat, video meetings and file storage that keep classes organized and easy to learn. Such change in the learning methods requires the adjustment of educational evaluation system or learning assessment towards the online tests or other forms of distance assessment. The main problem with online evaluation is that the exams are performed without the physical presence of both students and teachers As a consequence, verification of the examinees and the potential for cheating among the students have appeared as major obstacles during the online learning assessment. Another obstacle that arises in online exams is related to facilities such as hardware (laptops, androids, tablets, etc.), software as well as the stable internet connection for all students

Digestibility and Methane Emission of Ration Based on Oil Palm By Products Supplemented with Probiotics and Banana Stem: An In vitro Study

Abstract: The objective of the present study was to investigate feed digestibility and methane emissions of ration based on oil palm by-products on addition of probiotics, namely Acetoanaerobium noterae and Saccharomyces cerevisiae and banana stem in vitro. The substrate, i.e., oil palm by-products consisted of oil palm midrib, oil palm leaf, oil palm kernel cake and oil palm sludge in the ratio of 30, 30, 30 and 10%, respectively. The following treatments were tested: control (R0), R0+S. cerevisiae (R1), R0+A. noterae (R2), R0+S. cerevisiae+A. noterae (R3), R0+ banana stem (R4), R0+banana stem+S. cerevisiae (R5), R0+banana stem+A. noterae (R6) and R0+banana stem+S. cerevisiae+A. noterae (R7). The treatments were incubated in vitro with buffered-rumen fluid in four replicates (represented by three incubation units per replicate), conducted for 48 h at 39 C. Gas production and methane emission were measured at regular time point o intervals. After the incubation, digestibility, Volatile Fatty Acids (VFA), ammonia and microbial counts were determined. Results showed that the highest dry matter digestibility was shown by R5 and the best reduction of methane emission was shown by R2 at 12 h of incubation. In conclusion, supplementation of probiotics did not affect the digestibility of ration based on oil palm by-products but A. noterae addition was potential to mitigate ruminal methane emission

Addition of Purified Tannin Sources and Polyethylene Glycol Treatment on Methane Emission and Rumen Fermentation in Vitro

The objectives of this experiment were (1) to observe the effects of purified tannins and polyethy-lene glycol (PEG) on in vitro rumen fermentation and methanogenesis, and (2) to assess the accuracy of volatile fatty acid (VFA) profiles in predicting methane emission. Hydrolysable and condensed tannins were extracted and purified from chestnut, sumach, mimosa and quebracho. Hay and concentrate mixture (70:30 w/w, 380 mg) was incubated in Hohenheim glass syringe containing 10 mL rumen liquor + 20 mL buffer. The purified tannins were injected into the syringes at a concentration of 1.0 mg/mL each, either without or with PEG 6,000 addition in three replicates. Results revealed that a decrease of methane emission (20%-27%) was observed when the purified tannins were added into basal diet as compared to control (P<0.05), and PEG addition increased methane emission (P<0.05). All purified tannins decreased total gas and total VFA production (P<0.05). The H2 recovery of the treatments ranged from 86.7% to 95.3%. Estimation of methane emission by using VFA profiles revealed an accurate result with a very low root mean square prediction error (1.75%). It is concluded that tannins mitigate methane emission while PEG neutralize such effect, and VFA profiles are accurate predictors of the emission.Key words: tannin, polyethylene glycol, methane, rumen, stoichiometr

Innovative learning methods of Islamic education subject in Indonesia: a meta-analysis

This study aimed to evaluate the effects of innovative learning methods in the Islamic education (ISE) subject on learning motivation, learning activity, and learning achievement of students in the elementary and secondary schools in Indonesia. This study employed the meta-analysis method which is among the quantitative research approach. There were 47 literatures that eligible to be included in the database. Results revealed that, for the learning motivation variable, effect size value in the form of odds ratio was significantly higher than 1.0 (average 3.008 [2.020-4.480]; P<0.001). For the learning activity variable, effect size value was significantly higher than 1.0 (average 2.905 [2.113-3.994]; P<0.001). For the learning achievement variable, effect size value was significantly higher than 1.0 (average 4.941 [4.136-5.903]; P<0.001). These indicated that innovative learning methods were able to elevate learning motivation, activity and achievement. There were no significant differences among the categories within most of the sub-groups, except for the sub-group of cycle, in which cycle 2 showed higher learning achievement than that of cycle 1 (P<0.05). It can be concluded that innovative learning methods are able to elevate learning motivation, learning activity, and learning achievement of students at elementary and secondary schools to study the Islamic education subject. Future work should address the interaction between each particular innovative learning method and the ISE specific topic

Physiological Response and Haematological Profile of Reproductive Ewe Consuming Diet Supplemented with Black Tea Extract and Sunflower Seed Oil

This study was aimed to examine the effect of black tea extract addition in diet containing 4% and 6% sunflower oil on ewe physiological responses and blood profiles from late pregnancy until early lactation. This study was designed using a 2×2 factorial completely randomized design with 5 replications on 20 late-pregnant ewes. The first factor was two levels of sunflower seed oil (4% and 6%) and the second factor was the levels of black tea extract addition (0 ppm and 500 ppm). Data were analyzed by using analysis of variance (ANOVA) and Duncan’s multiple range test. Results showed that supplementation of sunflower seed oil and black tea extract had no effect on physiological responses and blood profiles of ewe during late pregnancy until early lactation except for erythrocyte numbers. Erythrocyte numbers were higher on 6% sunflower seed oil supplementation than that of 4% (P<0.05). In conclusion, addition of black tea extract in diets containing 4% and 6% sunflower seed oil limitedly affect physiological responses and blood profiles of ewe

AMMONIATION OF RICE STRAW AND SUPPLEMENTATION OF Paraserianthes falcataria AND Sapindus rarak ON IN VITRO RUMEN FERMENTATION AND METHANE PRODUCTION

This study aimed to observe the effects of rice straw ammoniation and supplementation of Paraserianthes falcataria and Sapindus rarak on rumen fermentation and methane production in vitro. Rice straw was ammoniated by adding 2% urea. Rice straw, ammoniated rice straw, P. falcataria leaves and S. rarak fruits were oven-dried and finely ground. Experimental treatments were arranged as follow: rice straw (T1), ammoniated rice straw (T2), T2 80% + P. falcataria 20% (T3), T2 60% + P. falcataria 40% (T4), T2 80% + P. falcataria 10% + S. rarak 10% (T5), and T2 60% + P. falcataria 20% + S. rarak 20% (T6). An amount of 1 g sample from each treatment was added with 100 ml rumen fluid and buffer mixture (1:2 v/v), and incubated in a water bath at 39 ºC for 48 h. The incubation was performed in four replicates and each replicate was represented by four incubation bottles. Results showed that urea treatment increased gas production of rice straw at 24 and 48 h, higher ammonia production, higher IVDMD, and lower methane production as compared to the untreated rice straw (P<0.05). Addition of P. falcataria or S. rarak at lower level produced similar ammonia concentration as ammoniated rice straw whereas their addition at higher level decreased ammonia concentration (P<0.05). Paraserianthes falcataria addition to ammoniated rice straw decreased protozoa population (P<0.05) and S. rarak further decreased the fauna population (P<0.05) as well. Inclusion of S. rarak at 20% DM (T6) produced the lowest methane production both at 24 and 48 h after incubation and lowest methane production per unit of DM degraded. It was concluded that ammoniation of rice straw improved its nutritional quality with lower methane production, and its mixture with P. falcataria and S. rarak further increased the quality and lower the production of methane, respectively.       

Influence of Hemicell® Addition on Diets Containing Different Levels of Crude Fiber on Performance of Laying Hens

This study was conducted to examine the effect of Hemicell® addition on diets containing different levels of crude fiber on performance and egg quality of laying hens. A total of 72 laying hens aged 21 weeks were randomly divided into 18 experimental units. A completely randomized design with factorial design 2×3 and 3 replications was employed in this study. Factor A was crude fiber level (5% and 8%) and factor B was the level of Hemicell®(0, 100x103 and 200x103 IU/kg ration).  Results showed that crude fiber significantly (P<0.01) increased feed consumption and decreased the performance of laying hens. The addition of Hemicell®in diets significantly (P<0.01) decreased feed consumption and increased the performance of laying hens. Hemicell®addition (100 IU) to a diet containing 8% crude fiber significantly (P<0.05) affected egg mass, feed conversion ratio, egg yolk score and egg weight. It can be concluded that diet with 8% crude fiber added with Hemicell® (100 IU) could increase egg mass, feed conversion ratio, egg weight and yolk color score

In vitro indications for favourable non-additive effects on ruminal methane mitigation between high-phenolic and high-quality forages

Feeding plants containing elevated levels of polyphenols may reduce ruminal CH4 emissions, but at the expense of nutrient utilisation. There might, however, be non-additive effects when combining high-phenolic plants with well-digestible, high-nutrient feeds. To test whether non-additive effects exist, the leaves of Carica papaya (high in dietary quality, low in polyphenols), Clidemia hirta (high in hydrolysable tannins), Swietenia mahagoni (high in condensed tannins) and Eugenia aquea (high in non-tannin phenolics) were tested alone and in all possible mixtures (n 15 treatments). An amount of 200mg DM of samples was incubated in vitro (24h; 39oC) with buffered rumen fluid using the Hohenheim gas test apparatus. After the incubation, total gas production, CH4 concentration and fermentation profiles were determined. The levels of absolute CH4, and CH4:SCFA and CH4:total gas ratios were lower (P<0·05) when incubating a combination of C. papaya and any high-phenolic plants (C. hirta, S. mahagoni and E. aquea) than when incubating C. papaya alone. Additionally, mixtures resulted in non-additive effects for all CH4-related parameters of the order of 2-15% deviation from the expected value (P<0·01). This means that, by combining these plants, CH4 in relation to the fermentative capacity was lower than that predicted when assuming the linearity of the effects. Similar non-additive effects of combining C. papaya with the other plants were found for NH3 concentrations but not for SCFA concentrations. In conclusion, using mixtures of high-quality plants and high-phenolic plants could be one approach to CH4 mitigation; however, this awaits in vivo confirmatio

In ovo Feeding of Butyric Acid Replacing Antibiotics Function to Increase Poultry Productivity

Antibiotics have an important role in increasing livestock productivity. The ban on the use of these products encourages efforts to find substitute products. Butyric acid is one of the organic acids and considered to be potential to replace the role of antibiotics. In principle, both antibiotics and butyric acids can create livestock conditions physiologically and metabolically well to achieve good productivity. Several mechanisms of butyric acid in increasing livestock productivity can provide explanation for the positive effects of this material. Characteristics of butyric acids such as corrosive, volatile and have unpleasant odor encourage the need for an appropriate application technology. In ovo feeding technology can be the right solution to eliminate the constraints of using butyric acid. This technology has also been widely studied and proven to increase livestock productivity through improved hatching parameters, performance of livestock, improvement of organs/digestive tract (intestine), repair of bones, muscles and meat, and enhancement of immunity