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All Journal Jurnal Peternakan (Jurnal of Animal Science) Jurnal Riset Biologi dan Aplikasinya Journal of Global Engineering Research & Science (J-GERS)
Santoso, Agung Dwi
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Environmental Science Immunology & microbiology Medicine & Pharmacology Veterinary

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PENGARUH PEMBERIAN TEPUNG DAUN KATUK (Sauropus androgynous) DALAM PAKAN TERHADAP KADAR KOLESTEROL DAN LEMAK AYAM BROILER Santoso, Agung Dwi; Windyasmara, Ludfia; Sukaryani, Sri
Jurnal Peternakan (Jurnal of Animal Science) Vol 8, No 2 (2024): JURNAL PETERNAKAN (JURNAL OF ANIMAL SCIENCE)
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jas.v8i2.16934

Abstract

Ayam broiler merupakan salah satu jenis ternak ayam yang mudah dipelihara, pertumbuhannya cepat, dan biaya pemeliharaannya murah. Katuk merupakan salah satu jenis tumbuhan yang dapat digunakan sebagi feed additive alami, bernilai gizi tinggi, mengandung senyawa antibakteri dan antioksidan, serta mengandung β-karoten yang tinggi. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh penambahan tepubg daun katuk terhadap kadar kolesterol dan lemak daging ayam broiler. Penelitan ini menggunkan ayam broiler umur 4 hari yang berjumlah 96 ekor. Desain yang digunakan dalam penelitian ini adalah Rancangan Acak Lengkap (RAL) dengan 4 perlakuan dan 3 ulangan. Perlakuan yang dimaksud adalah P-0 : 100% konsentrat + 0% tepung daun katuk, P-1 : 100% konsentrat + 1% tepung daun katuk, P-2 : 100% konsentrat + 3% tepung daun katuk, dan P-3 : 100% konsentrat + 5% tepung daun katuk.  Data yang diperoleh dianalisa dengan menggunakan SPSS for windows. Berdasarkan hasil penelitian, persentase kadar lemak daging  setiap perlakuan secara yaitu P0 = 3,68 ; P1 = 3,54 ; P2 = 3,19 ; P3 = 2,68 % (P<0,01). Sedangkan untuk kadar kolesterol daging yaitu P0 = 85,73 ; P1 = 46,87 ; P2 = 36,52 ; P3 = 18,74 mg/100 gr (P<0,01). Dapat disimpulkan bahwa penambahan tepung daun katuk dalam pakan mampu menurunkan kadar kolesterol dan lemak daging ayam broiler. Kata kunci :Ayam broiler, Kadar Lemak dan Kolesterol, Daun Katuk
Variation and Phenetic Relationship of Tobacco (Nicotiana tabacum L.) In Central Java and Yogyakarta Based on Morphological Characters Santoso, Agung Dwi; Purnomo, Purnomo
Jurnal Riset Biologi dan Aplikasinya Vol. 3 No. 2 (2021)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrba.v3n2.p73-79

Abstract

Tobacco (Nicotiana tabacum L.) is a plant used as a mixture of cigarettes, and recreational media especially for men. This study aimed to identify variations, and determine the relationship between tobacco cultivars in Central Java and Yogyakarta based on macromorphological and micromorphological characters. Sampling locations are determined by surveying locations in both regions. Tobacco samples found include 5 cultivars in Central Java namely 'Mantili', 'Uler Magetan', 'Garut', ‘Gober Boyolali’, 'Manila', and 3 cultivars in Yogyakarta namely 'Siluk', 'Java', and 'Virginia'. Characterization with 23 qualitative macromorphological characters including leaves, and stems, with 9 qualitative and quantitative micromorphological characters including trichome and stomata. Descriptive data analysis is done to obtain the typical character of each cultivar, followed by numerical analysis including scoring characters processed with MVSP (Multi Variate Statistical Package), clustering with UPGMA (Unweighted Pair Group Method with Averages), and calculation of similarity coefficients with Simple matching formula. The results showed variations in the macromorphological characters including the shape of the leaf lamina, the base of the leaf, the absence of leaf stalks, and type of leaf venation. Tobacco has anisositic stomata, and varies in terms of length, width, and density of stomata. Tobacco trichomes are glandular. The result dendrograms form two clusters (A and B) with the similarity index of each cluster above 0.80. Cultivars with close relationships such as 'Siluk'-'Java', and far relationship like 'Java'-'Manila'.
PENGARUH PEMBERIAN TEPUNG DAUN KATUK (Sauropus androgynous) DALAM PAKAN TERHADAP KADAR KOLESTEROL DAN LEMAK AYAM BROILER Santoso, Agung Dwi; Windyasmara, Ludfia; Sukaryani, Sri
Jurnal Peternakan (Jurnal of Animal Science) Vol 8, No 2 (2024): JURNAL PETERNAKAN (JURNAL OF ANIMAL SCIENCE)
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jas.v8i2.16934

Abstract

Ayam broiler merupakan salah satu jenis ternak ayam yang mudah dipelihara, pertumbuhannya cepat, dan biaya pemeliharaannya murah. Katuk merupakan salah satu jenis tumbuhan yang dapat digunakan sebagi feed additive alami, bernilai gizi tinggi, mengandung senyawa antibakteri dan antioksidan, serta mengandung β-karoten yang tinggi. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh penambahan tepubg daun katuk terhadap kadar kolesterol dan lemak daging ayam broiler. Penelitan ini menggunkan ayam broiler umur 4 hari yang berjumlah 96 ekor. Desain yang digunakan dalam penelitian ini adalah Rancangan Acak Lengkap (RAL) dengan 4 perlakuan dan 3 ulangan. Perlakuan yang dimaksud adalah P-0 : 100% konsentrat + 0% tepung daun katuk, P-1 : 100% konsentrat + 1% tepung daun katuk, P-2 : 100% konsentrat + 3% tepung daun katuk, dan P-3 : 100% konsentrat + 5% tepung daun katuk.  Data yang diperoleh dianalisa dengan menggunakan SPSS for windows. Berdasarkan hasil penelitian, persentase kadar lemak daging  setiap perlakuan secara yaitu P0 = 3,68 ; P1 = 3,54 ; P2 = 3,19 ; P3 = 2,68 % (P0,01). Sedangkan untuk kadar kolesterol daging yaitu P0 = 85,73 ; P1 = 46,87 ; P2 = 36,52 ; P3 = 18,74 mg/100 gr (P0,01). Dapat disimpulkan bahwa penambahan tepung daun katuk dalam pakan mampu menurunkan kadar kolesterol dan lemak daging ayam broiler. Kata kunci :Ayam broiler, Kadar Lemak dan Kolesterol, Daun Katuk
The Influence of Substrate Width Ratio on the Rectified DC Output Voltage of a Piezoelectric Energy Harvester Santoso, Agung Dwi; Gamayel, Adhes; Suprihadi, Untung
Journal of Global Engineering Research and Science Vol. 4 No. 2 (2025): Vol. 4 No. 2 (December 2025): Journal of Global Engineering Research & Science
Publisher : Jakarta Global University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56904/j-gers.v4i2.161

Abstract

Piezoelectric energy harvesters (PEHs) have attracted considerable attention as an alternative approach for converting ambient mechanical energy into electrical power, particularly under low-speed wind conditions. In this study, the performance of a micro-windmill-driven piezoelectric wind energy harvesting system is experimentally investigated with emphasis on the effects of wind speed and mechanical configuration ratios. Experiments were conducted in a controlled wind tunnel environment at wind speeds of 6, 7, and 8 m/s to represent low to moderate airflow conditions commonly encountered in practical applications. Three mechanical configuration ratios, namely 1:3, 1:2, and 1:1, were evaluated to assess their influence on the dynamic response and electrical output of the piezoelectric element. The alternating voltage generated by the piezoelectric harvester was rectified, and the output voltage–time characteristics were recorded over a 60 s testing period using a data acquisition system. The experimental results demonstrate that increasing wind speed significantly improves both the voltage rise rate and the achievable steady-state voltage for all tested configurations, indicating enhanced mechanical excitation and energy conversion efficiency at higher airflow velocities. Among the configurations examined, the 1:1 ratio consistently exhibits the highest output voltage and the fastest response, particularly at wind speeds of 7 and 8 m/s, suggesting an optimal mechanical–electrical coupling. The 1:2 configuration shows comparable performance at lower wind speeds, while the 1:3 configuration produces substantially lower voltage output throughout the test duration, reflecting reduced energy transfer effectiveness. Overall, the findings highlight the importance of mechanical configuration and wind speed in determining the performance of piezoelectric wind energy harvesters. The results provide useful design guidelines for optimizing PEH systems intended for self-powered sensors and other low-power electronic applications operating in low-speed wind environments.
Co-Authors Adhes Gamayel Ludfia Windyasmara, Ludfia Purnomo Purnomo Sri Sukaryani Untung Suprihadi, Untung