Scientific Journals of Bogor Agricultural University
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Influence of Sociodemographic, Knowledge, and Behavior of DKI Jakarta People on Willingness To Pay for Disposable Mask during the Covid-19 Pandemic
Get PDFThe use of masks is recommended to reduce the risk of widespread spread of the Covid-19 virus, but because of its use in high quantities in a short time, it has an impact on the high waste of disposable masks. The problem of high waste of masks that is not accompanied by good management is it has the potential to pollute the environment and disposable masks are included in the type of hazardous medical waste so that they require special waste management. The purpose of this study is to analyze the relationship between the sociodemographic characteristics of the people of DKI Jakarta and the Willingness to Pay (WTP) for disposable mask waste management to determine the WTP price for disposable mask waste management. The survey was conducted in DKI Jakarta Province by distributing questionnaires and obtained a total sample of 356 respondents. Furthermore, the analysis method used, the first is logistic regression analysis to determine the variables of sociodemographic characteristics that affect individual WTP. The next analysis method is to calculate WTP using the Contingent Valuation Method (CVM) and the question model with the Double Bounded dichotomous method. Based on the results, it is known that the dependent variables that can increase the WTP value are income (Δ+ 23.6%, p ≤ 0.05), type of healing treatment (Δ+ 100%, p ≤ 0.1), and knowledge (Δ+ 125.9%, p ≤ 0.01), where a value of Rp 28,578 is ideal for the cost of managing disposable mask waste.Dampak penyebaran virus Covid-19 di seluruh dunia sejak awal tahun 2020 berdampak pada anjuran pembatasan social dan penggunaan masker untuk menutupi hidup dan mulut. Penggunaan masker dianjurkan untuk menurunkan risiko penyebaran virus Covid-19 yang meluas namun sebab penggunaannya dalam jumlah yang tinggi pada waktu yang singkatm berdampak pada tingginya limbah dari masker sekali pakai. Permasalahan yang terjadi adalah tingginya limbah masker yang tidak diiringi oleh pengelolaan yang baik berdampak pada timbulan masker yang berpotensi mencemari lingkungan serta masker sekali pakai termasuk ke dalam jenis limbah medis B3 sehingga membutuhkan pengelolaan limbah secara khusus. Tujuan dari penelitian ini adalah analisis hubungan karakteristik sosiodemografi masyarakat DKI Jakarta terhadap Willingness to Pay (WTP) pengelolaan limbah masker sekali pakai untuk menentukan harga WTP pengelolaan limbah masker sekali pakai. Survey dilakukan di Provinsi DKI Jakarta dengan pembagian kuesioner dan didapatkan total sampel sebanyak 356 responden. Selanjutnya metode analisis yang digunakan, yang pertama adalah analisis regresi logistic untuk mengetahui variable karakteristik sosiodemografi yang berpengaruh pada WTP individu. Metode analisis selanjutnya yaitu untuk perhitungan WTP menggunakan metode perhitungan Contingent Valuation Method (CVM) dan model pertanyaan dengan metode Double Bounded Dichotomus. Hasil analisis adalah pendapatan, penanganan penyembuhan, dan pengetahuan signifikan berpengaruh pada keputusan WTP individu dengan hasil perhitungan nilai WTP untuk pengelolaan limbah masker sebesar Rp 30.771. Kesimpulan dari penelitian ini adalah nilai WTP sangat dipengaruhi oleh pendapatan, penanganan penyembuhan, dan pengetahuan dimana nilai sebesar Rp 30.771 ideal untuk biaya pengelolaan limbah masker sekali pakai
Work Breakdown Structures Vs. Business Processes: An Investigation of Appropriate Method For Identifying The Number of Risks
Get PDFBackground: Risk identification is a critical first step in the risk management process, laying the groundwork for subsequent stages like analysis, assessment, mitigation, and monitoring. Accurate identification is crucial to ensure that identified risks align with the company’s specific contextPurpose: This research aims to investigate how knowledge and understanding of various risk identification techniques influence the number of risk events identified by practitioners.Design/Methodology: An experimental approach was employed, involving 84 business school students. The study measured the dependent variable number of risks identified against independent variables comprising different risk identification approaches, both with and without context knowledge. Data analysis utilized the Chi-square technique of non-parametric statistics, maintaining a 95 percent confidence level.Findings: The findings reveal a significant correlation between the methods of identification approach (with or without knowledge of risk context) and the number of risks identified. Participants using the Business Process (BP) approach, regardless of context knowledge, identified more risks compared to those using the Work Breakdown Structure (WBS) approach or a No approach (NT).Conclusion: The findings highlight the importance of selecting appropriate risk identification methods and underscore the value of context knowledge in enhancing risk identification effectiveness. This research provides actionable insights for practitioners, analysts, and decision-makers actively engaged in risk management.Originality: This study contributes to the field by emphasizing the role of risk identification approaches and contextual knowledge, providing a framework for improving risk management practices.
Keywords: risk identification, risk context, experiment approach, and risk knowledg
Consumer Protection for High School Students with Disabilities: Between Practice and Context
Get PDFBackground: In fact, there are still many students with disabilities who do not get their rights in schools with adequate facilities and infrastructure.
Purpose: This study examines how consumer protection efforts are carried out by four (4) high schools in North Bekasi District based on Bekasi Regional Regulation Number 16 of 2019 concerning the Protection and Fulfilment of the Rights of Persons with Disabilities and Consumer Protection Obstacles faced by four high schools in North Bekasi District based on Bekasi Regional Regulation Number 16 of 2019.
Methods: This research is normative, based on secondary and primary data gathered through direct interviews with the authorities in four (4) high schools in Bekasi.
Findings: The interesting findings are that consumer protection efforts to protect and fulfill the rights of persons with disabilities are still not fully implemented. Related, the fulfillment of the right to inclusive education has been fully implemented but is inversely proportional to the implementation of accessibility. The obstacles faced in realizing consumer protection for students with disabilities are in fulfilling accessibility, both non-physical and physical accessibility.
Conclusions: This study shows that although consumer protection efforts to fulfill the rights of persons with disabilities in four high schools in North Bekasi District have been carried out, their implementations are still not fully effective, especially for accessibility. Although the right to inclusive education has been fulfilled, significant challenges remain in ensuring adequate physical and non-physical accessibility.
Research implication: The study is expected to provide input to the local government of Bekasi and other local governments on paying attention to the rights of people with disabilities in schools, both facilities and pre-facilities, to provide comfort and the rights of citizens as mandated in the constitution of justice for the entire nation of Indonesia
Characteristics of Quail Carcass and Non Carcass Fed A Diet with Black Soldier Fly Maggot Flour
Get PDFFeed is a crucial factor in enhancing quail (Coturnix-coturnix Japonica) productivity. A Frequently used protein source in quail feed is Meat Bone Meal (MBM). However, MBM is an imported product, making it relatively expensive. An alternative to MBM is utilizing locally sourced feed ingredients, such as black soldier fly maggot. This study aims to evaluate the characteristics of quail carcasses and non-carcass components from quails fed a diet containing black soldier fly maggot meal. The observed variables include slaughter weight, carcass weight, and its percentage, non-carcass weight and its percentage, commercial cut weight, and carcass percentage, as well as the weight and proportion of both edible and non-edible carcass components. The quail hens used in this study were aged 44-50 weeks and in their laying period. The research process included producing and managing black soldier fly maggot meal, preparing feed, setting up and maintaining cages, slaughtering, as well as cutting and deboning the carcasses. The treatment applied was R0 (feed with the primary protein source being MBM) and R1 (feed with the primary protein source of black soldier fly maggot). The collected data were analyzed using a two-sample t-test. The result showed that quail fed with black soldier fly meal as the primary protein source had no significant impact on slaughter weight, carcass and non-carcass percentage, commercial cut percentage, or the proportion of edible and non-edible parts. The conclusion of this study is that maggot can be used as an alternative protein source in feed as a substitute for MBM because quails fed with black soldier fly maggot flour as th eprimary protein source produced carcass and non carcass characteristics similar to those of quails fed with MBM as the main protein source
Supplementation of Brotowali Stem Meal (Tinospora Crispa L) in the Diet on Performance, and Organ Immunity of Hybrid Ducks Gunsi 888
Get PDFThe management of microbial infections in poultry farming continues to be largely antibiotic-dependent. Despite this, the application of Antibiotic Growth Promoters (AGPs) in poultry feed has been banned, necessitating the use of herbal feed additives such as Brotowali (Tinospora crispa). This study aimed to evaluate the effects of Brotowali stem meal on the performance and immune organs of hybrid ducks. A total of 200 hybrid ducks Gunsi 888 were used in this study, reared from 11 to 46 days of age. The ducks were fed either a basal diet as a control (P1) or a basal diet supplemented with 0.5% Brotowali stem meal (P2), 1% (P3), and 1.5% (P4). The observed immune organs included the thymus, bursa of Fabricius, and spleen. The study was conducted in Bogor, West Java, while the an analysis of Brotowali’s phytochemical properties was conducted at the Tropical Biopharmaca Research Center of IPB University. All collected data were analyzed using analysis of variance (ANOVA), and significant differences were further analyzed using Duncan’s Multiple Range Test (DMRT) with SPSS version 25. The results showed that Brotowali stem meal had no significant effect (P>0.05) on the immunity of hybrid ducks. However, Brotowali stem meal significantly (P<0.05) improved the performance of hybrid ducks, as evidenced by increased body weight and decreased feed conversion ratios. In conclusion, Brotowali can enhance the performance of hybrid ducks, and it does not affect the stress levels of the livestock
Effective resolution of a post-ovariohysterectomy cutaneous abscess in a young female cat following antibiotic switch from amoxicillin to cefadroxil
Get PDFLaporan kasus ini menyajikan penggunaan jahitan intradermal kontinyu yang pertama kali digunakan di Indonesia untuk mengobati abses kulit pasca ovariohisterektomi pada kucing muda, dengan penggantian antibiotik. Seekor kucing betina berumur 6 bulan, K (2,5 kg), mengalami abses kulit setelah ovariohisterektomi. Amoksisilin trihidrat (15 mg/kg setiap 12 jam) diberikan secara oral untuk terapi antimikroba pasca operasi. Pada hari ke 9, pemeriksaan fisik menunjukkan pembengkakan pada lokasi sayatan yang dijahit, suhu rektal meningkat (39,9°C), dan ekspresi meringis. Terapi antibiotik dilanjutkan dengan injeksi amoksisilin kerja panjang subkutan (15 mg/kg). Namun, pada hari ke 18, pemilik melaporkan keluar cairan bernanah dari area yang bengkak. Setelah pemeriksaan ulang, rejimen antibiotik disesuaikan dengan mengganti amoksisilin trihidrat dengan sefadroksil (35 mg/kg setiap 24 jam, per oral). Pada hari ke 21, penyembuhan yang signifikan terlihat dengan penurunan ukuran abses dan penghentian total keluarnya nanah. Pada hari-hari berikutnya, gejala klinis berangsur-angsur berkurang, dan kondisi K secara keseluruhan membaik, ditandai dengan kembalinya nafsu makan, perilaku, dan aktivitas normal. Lokasi sayatan yang dijahit sembuh dengan baik dan menyatu mulus dengan kulit di sekitarnya.This case report presents the first use of buried continuous intradermal sutures in Indonesia to treat a post-ovariohysterectomy cutaneous abscess in a young cat, with an antibiotic switch. A 6-month-old female cat, K (2.5 kg), developed a cutaneous abscess after ovariohysterectomy. Amoxicillin trihydrate (15 mg/kg q12h) was administered orally for postoperative antimicrobial therapy. On day 9, physical examination revealed swelling at the sutured incision site, an elevated rectal temperature (39.9°C), and a grimacing expression. Antibiotic therapy was continued with subcutaneous injection of long-acting amoxicillin (15 mg/kg). However, by day 18, the owner reported purulent discharge from the swollen area. Upon re-examination, the antibiotic regimen was adjusted by replacing amoxicillin trihydrate with cefadroxil (35 mg/kg q24h, orally). By day 21, significant healing was observed with a notable reduction in abscess size and complete cessation of pus discharge. In subsequent days, clinical signs gradually diminished, and K\u27s overall condition improved, as indicated by the return of normal appetite, behavior, and activity. The sutured incision site healed well and blended seamlessly with the surrounding skin
ANALYSIS OF RESISTANCE AND STABILITY IN THE MODIFICATION OF OUTRIGGED FISHING BOAT DESIGN IN THE PUGER WATER, JEMBER: ANALISIS HAMBATAN DAN STABILITAS PADA MODIFIKASI DESAIN KAPAL IKAN BERCADIK DI PERAIRAN PUGER, JEMBER
Get PDFKapal ikan merupakan salah satu alat transportasi yang penting untuk profesi nelayan. Kapal ikan di Perairan Puger dibuat oleh pengrajin kapal tradisional secara turun temurun. Desain linggi haluan kapal ikan tersebut belum diketahui efektivitasnya. Tujuan dari penelitian ini adalah untuk menganalisis pengaruh bentuk linggi haluan terhadap nilai hambatan dan stabilitas kapal. Penelitian ini menggunakan kapal ikan bercadik dengan panjang (LOA) 11 m, lebar (B) 1,5 m, tinggi (H) 1,5 m, dan sarat (T) 0,5 m. Penelitian dilakukan dengan membandingkan desain awal kapal ikan dan desain modifikasi haluannya. Perbandingan menggunakan nilai hambatan dan stabilitas sebagai acuan. Hasil dari penelitian ini didapatkan bahwa desain modifikasi mempunyai hambatan lebih kecil sebesar 16,327%. Pada aspek stabilitas, desain modifikasi mempunyai nilai GZ lebih besar yaitu 12,7% dan sudut oleng lebih kecil 2,1% dari desain awal. Desain modifikasi mempunyai periode oleng 5,8% lebih cepat daripada desain awal. Desain modifikasi mempunyai nilai hambatan dan stabilitas yang lebih baik daripada desain awal.Fishing boats are one of the essential means of transportation for fishers. In Puger, fishing boats are crafted by traditional boat builders who have passed down their skills through generations. However, the effectiveness of the bow stem design of these fishing boats remains unknown. This research aims to analyze the impact of the bow stem shape on the resistance and stability values of the boat. This research utilized an outrigger fishing boat design with the following dimensions: a length overall (LOA) of 11 m, a beam (B) of 1.5 m, a height (H) of 1.5 m, and a draft (T) of 0.5 m. We compared the boat\u27s original design and its modified bow design. The results of this study indicate that the modified design has a 16.327% lower resistance. Regarding stability, the modified design shows a 12.7% greater GZ (upholding arm value) and a 2.1% smaller heel compared to the initial design. Additionally, the modified design has a rolling period that is 5.8% faster than the original design. The modified design has better resistance and stability than the initial design
Evaluation of food digestibility in Nile tilapia fish Oreochromis niloticus given NSP enzymes and organic chromiium
Get PDFFeed is a crucial factor in tilapia farming because it contributes 92% of the total production cost. This study aims to evaluate the digestibility and utilization of carbohydrates in low-protein feed supplemented with NSP enzymes and organic chromium. The research method employed a factorial completely randomized design with treatments of organic chromium (0, 1, 2) and NSP enzymes (0, 1). The study used 18 aquariums, each measuring 50×40×35 cm. The fish used were tilapia with an average weight of 33.09 ± 0.06 g per fish. The feed used was commercial feed supplemented with organic chromium and NSP enzymes. The study focused on digestibility performance, digestive enzyme activity, growth performance, and antioxidant status. The results showed that the treatments E1C1 and E0C2 resulted in better total digestibility, energy digestibility, and protein digestibility compared to the control and other treatments. Lipase, protease, and amylase enzymes in tilapia fed with the E1C1 treatment showed significantly higher results (P<0.05) compared to the control. Growth performance in tilapia fed with NSP enzymes and organic chromium did not show significant differences from the control (P>0.05). However, antioxidant status, specifically SOD and GPx, was significantly higher in the E0C1 treatment compared to the control (P<0.05). The conclusion of this study is that the addition of NSP enzymes and organic chromium to low-protein feed can improve digestibility and optimize carbohydrate utilization, with the best results achieved with the E1C1 treatment.
Keywords: antioxidant, digestive enzymes, Nile tilapia, nutrient digestibility
ABSTRAK
Pakan menjadi factor krusial dalam usaha budidaya ikan nila karena memiliki kontribusi sebesar 92% dari total biaya produksi. Penelitian ini bertujuan untuk mengevaluasi kecernaan dan kemampuanpemanfaatan karbohidrat pada pakan protein rendah yang diberienzim NSP dan kromium organik. Metode penelitian ini menggunakan rancangan acak lengkap faktorial dengan perlakuan kromium organic (0,1,2) dan enzim NSP (0,1). Wadah yang digunakan merupakan aquarium yang berukuran 50×40×35 cm sebanyak 18 unit. Ikan yang digunakan dalam penelitian ini adalah ikan nila dengan bobot rata-rata 33,09 ± 0,06 g/ekor. Pakan yang digunakan merupakan pakan komersial yang diberi penambahan kromium organik dan enzim NSP. Penelitian ini difokuskan pada kinerja kecernaan, aktivitas enzim pencernaan, kinerja Pertumbuhan serta status Antioksidan. Hasil penelitian menunjukkan bahwa perlakuan E1C1 dan E0C2 menghasilkan nilai kecernaan total, kecernaan energi dan kecernaan protein yang lebih baik dibanding perlakuan kontrol dan perlakuan lainnya. Enzim lipase, protease dan amilase pada ikan nila yang diberipakan perlakuan E1C1 menunjukkan hasil yang lebih tinggi secarasignifikan (P<0,05) terhadap kontrol. Kinerja pertumbuhan pada ikan nila yang diberienzim NSP dan kromium organik menghasilkan nilai yang tidak signifikan dengan kontrol (P>0,05). Walaupun demikian, status antioksidan yang dihasilkan yaitu SOD dan GPx pada perlakuan E0C1 menghasilkan nilai yang lebih tinggi secara signifikan terhadap kontrol (P<0,05). Kesimpulan dari penelitian ini adalah penambahan enzim NSP dan kromium organik pada pakan rendah protein mampu meningkatkan kinerja kecernaan dan memanfaatkan karbohidrat dengan optimal. Hasil terbaik pada perlakuan E1C1.
Kata kunci: antioksidan, enzim pencernaan, kecernaan nutrient, ikan nil
Cell Dimension and Proportion of Acacia aulacocarpa Wood in Axial and Radial Directions from Gunung Kidul, Yogyakarta
No full textThe information related anatomical characteristics (cell dimension and proportion) of Acacia aulacocarpa is still limited also for its axial and radial variations. This research aimed to analyze variation of the anatomical characteristics in axial and radial direction. Three trees of 27-year-old A. aulacocarpa planted in Gunung Kidul Yogyakarta were used. This research covered a completely randomized design with two factors, the axial direction (base, middle, and top of the trunk) and the radial direction (near pith, between pith and bark, and near bark) in triplicate. A two-way analysis of variants was used. The measured parameters were fiber dimensions (length, diameter, lumen diameter, and wall thickness) and cell proportions (fiber, vessel, ray parenchyma, and axial parenchyma). The results showed that average value of fiber dimensions was as follow: fiber length 0.94 mm; fiber diameter 17.43 µm; lumen diameter 11.75 µm; and fiber wall thickness 2.84 µm. The average value of cell proportions was 52.48% of fibers cell proportion; 17.5% of wood vessel proportion; 15.69% of axial parenchyma proportion; and 16.68% of ray’s parenchyma proportion. The axial position factor does not affect the proportion and dimensions of the fiber. However, the radial position factor affects the proportion of fiber cells, the proportion of wood vessels, the proportion of axial parenchyma, fiber length, lumen diameter, and fiber wall thickness. Fiber length, fiber lumen diameter, cell wall thickness increased from near the pith to the middle and then remained relatively constant toward the bark. Based on these results, it is suspected that the middle and near the bark are mature wood.
Keywords: Acacia aulacocarpa, cell dimension, cell proportion, radial direction, axial directio
Antioxidant Activity and Phenolics of Kabau (Archidendron bubalinum) Pod Peel Extract from East Lampung on Blood Cell Male Mice Induced by Cadmium
No full textCadmium (Cd) increases oxidative stress, which increases the likelihood of health problems. To protect the body from oxidative stress, natural antioxidants obtained from plants are required. The kabau plant (Archidendron bubalinum) is thought to have antioxidant phytochemicals. The purpose of this study was to assess the antioxidant activity and total phenolic component content of kabau pod peels, as well as their effect on the quantity of erythrocytes and leukocytes in male mice exposed to cadmium. This study used a completely randomized design, with 24 mice divided into six groups: three control groups and three treatment groups. The findings of assessing the antioxidant activity of peel extract revealed that the IC50 was 93.6 ppm, which is considered strong. The phenolic content of peel extract was 72.26 mg GAE/g. Giving pod peel extract to mice increased the number of erythrocytes and leukocytes, however the impact was not significant (p = 0.028 and P = 0.239). Mice with 380 mg/kg BW produced better outcomes.
Keywords: antioxidant, Archidendron, blood cell, kabau, phenolic