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All Journal International Journal of Evaluation and Research in Education (IJERE) MEDIA PETERNAKAN - Journal of Animal Science and Technology Jurnal Ilmu Pertanian Indonesia Jurnal Teknologi Dan Industri Pangan Jurnal Teknologi Industri Pertanian Jurnal Silvikultur Tropika (JST) Buletin Peternakan Pastura; Journal Of Tropical Forage Science Jurnal Veteriner Jurnal Ilmu Ternak Jurnal Ilmiah Aplikasi Isotop Radiasi BIOTROPIA - The Southeast Asian Journal of Tropical Biology Jurnal Ilmu Komputer dan Agri-Informatika Jurnal Sain Peternakan Indonesia JURNAL PETERNAKAN WARTAZOA Indonesian Bulletin of Animal and Veterinary Sciences Journal of the Indonesian Tropical Animal Agriculture Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) JITRO (Jurnal Ilmiah dan Teknologi Peternakan Tropis) Jurnal Ilmu Produksi dan Teknologi Hasil Peternakan Warta IHP (Warta Industri Hasil Pertanian) Jurnal Biodjati Animal Production : Indonesian Journal of Animal Production Jurnal Pendidikan Islam Tropical Animal Science Journal Jurnal Ilmu Nutrisi dan Teknologi Pakan Jurnal Kimia Terapan Indonesia Jurnal Nutrisi Ternak Tropis dan Ilmu Pakan Jurnal Ilmu Peternakan Terapan Tadarus Tarbawy : Jurnal Kajian Islam dan Pendidikan PETERPAN (Jurnal Peternakan Terapan) Journal of Applied Agricultural Science and Technology Livestock and Animal Research Jurnal Kedokteran Hewan Policy Brief Pertanian, Kelautan, dan Biosains Tropika Jurnal Pendidikan Islam Jurnal Agripet Animal Production

Anuraga Jayanegara

Department Of Nutrition And Feed Technology, Faculty Of Animal Science, Bogor Agricultural University, Bogor, 16680, Indonesia

Author-ID : 291854

Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Medicine & Pharmacology Social Sciences Veterinary Other

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Fermentabilitas dan Kecernaan in Vitro Ransum Limbah Agroindustri yang Disuplementasi Kromium Anorganik dan Organik A Jayanegara; A S Tjakradidjaja; T Sutardi
Media Peternakan Vol. 29 No. 2 (2006): Media Peternakan
Publisher : Faculty of Animal Science, Bogor Agricultural University

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Chromium is a trace element which has been considered essential for humans and animals since 1959. However, the effect of chromium on activity of rumen microorganisms has not been yet investigated. This experiment was conducted to determine the effect of chromium supplementation to agroindustrial waste based diets on rumen microorganisms which was measured in vitro. Chromium supplement was in the form of anorganic and organic incoroporated to Rhizopus sp. fungus. Two experimental designs were used in this experiment. A completely randomized design with 10 treatments and 3 replications was used to measure dry matter and organic matter digestibilities (DMD and OMD). A factorial randomized block design 10 x 3 was used to measure total VFA and NH3 productions. Factor A was diet treatments and Factor B was fermentation period. Rumen fluid was used as block (replication). Treatments consisted of K1 (control diet), K2 (K1 + non mineral Rhizopus sp. fungus), A (K2 + anorganic Cr) with 4 levels of anorganic Cr (1, 2, 3, and 4 ppm), and O (K1 + organic Cr) with 4 levels of organic Cr (1, 2, 3, and 4 ppm). Incubation period was carried out for 1, 3, and 5 hours. The addition of non mineral Rhizopus sp. fungus (K2) decreased total VFA production from 110 to 59 mM (P < 0.05) and increased NH3production from 9.97 to 13.28 mM (P < 0.05). Supplementation of anorganic Cr decreased DMD and OMD compared to K2 (P < 0.05), but organic Cr supplementation increased DMD and OMD. Optimum level of organic Cr supplementation was 1 ppm and 4 ppm for anorganic Cr. This means that supplementation of organic Cr is four times more efficient than that of anorganic Cr. Key words : chromium, anorganic, organic, digestibility, fermentation

Penentuan Aktivitas Biologis Tanin Beberapa Hijauan secara in Vitro Menggunakan ’Hohenheim Gas Test’ dengan Polietilen Glikol Sebagai Determinan A Jayanegara; A Sofyan
Media Peternakan Vol. 31 No. 1 (2008): Media Peternakan
Publisher : Faculty of Animal Science, Bogor Agricultural University

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Leaves from trees are alternative source of forage for ruminant's feed. However, most of the leaves contain high concentration of phenolic compounds, especially in the form of tannins. This experiment was aimed at quantifying biological activity of tannins using in vitro gas production method without and with the addition of polyethylene glycol (PEG). The leaves used in this experiment was Salix alba, Rhus typhina and Peltiphyllum peltatum. Several rumen fermentation variables, such as organic matter digestibility (OMD), metabolizable energy (ME) and total VFA production were measured. The results showed that crude protein, NDF and hemicellulose contents of S. alba leaves were the highest, while there was no difference in ADF content from the others. Biological activity of tannins in S. alba, R. Typhina and P. Peltatum were 0.7%, 45.7% and 122.6%, respectively. There was a significant correlation between total phenols and tannins biological activity (r=0.70; P < 0.05), whereas no significant correlation was found for total tannins and condensed tannins. It was concluded that the addition of PEG increased in vitro gas production, organic matter digestibility, metabolizable energy and total VFA production after 24 hours incubation period. Key words: tannins, PEG, in vitro, fermentation, Hohenheim gas test

Emisi Metana dan Fermentasi Rumen in Vitro Ransum Hay yang Mengandung Tanin Murni pada Konsentrasi Rendah A Jayanegara; H. P S Makkar; K Becker
Media Peternakan Vol. 32 No. 3 (2009): Media Peternakan
Publisher : Faculty of Animal Science, Bogor Agricultural University

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This experiment was conducted to study the effects of addition of purified tannins at low concentration into hay diet on in vitro gas emission and rumen fermentation. Treatments consisted of: P0 (control hay), P1 (hay + 0.5 mg chestnut tannin/ml of incubation medium), P2 (hay + 0.5 mg/ml mimosa tannin), P3 (hay + 0.5 mg/ml quebracho tannin) and P4 (hay + 0.5 mg/ml sumach tannin). Variables measured were gas production kinetics, organic matter digestibility (OMD), methane production, expressed as percent methane in total gas and methane production per unit organic matter digested, and volatile fatty acid (VFA) production. The results showed that in most cases tannin addition at 0.5 mg/ml decreased significantly (P < 0.05) total and rate of gas production, OMD, total VFA and iso-VFA. Tannin addition also decreased methane production (P < 0.05). Hydrolysable tannins seemed to have better methane reduction effect than condensed tannins. The best tannin to decrease methane was chestnut tannin, which contained hydrolysable tannins. Present research should be shifted from evaluating only the effect of condensed tannins in reducing methane emission towards some potential hydrolysable tannins since the nature and the toxicity of hydrolysable tannins are quite diverse. Key words: methane, tannin, rumen, in vitro, hay

Kinetika Produksi Gas, Kecernaan Bahan Organik dan Produksi Gas Metana in Vitro pada Hay dan Jerami yang Disuplementasi Hijauan Mengandung Tanin A Jayanegara; A Sofyan; H.P S Makkar; K Becker
Media Peternakan Vol. 32 No. 2 (2009): Media Peternakan
Publisher : Faculty of Animal Science, Bogor Agricultural University

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This research was aimed to evaluate supplementation of tannin-containing forages, namely Rhus typhina and Salix alba into hay and straw diets on rumen fermentation parameters in vitro, especially on methane production. Supplementation was applied at 30% dry matter replacement from hay and straw diets. Treatments consisted of: H (hay), J (straw), RT (R. typhina), SA (S. alba), H:RT (hay:R. typhina, 70:30), H:SA (hay:S. alba, 70:30), J:RT (straw:R. typhina, 70:30), and J:SA (straw:S. alba, 70:30). Incubation was applied using Hohenheim gas production method for 24 hours. Variables measured after incubation were cumulative and kinetics of gas production, methane emission and organic matter digestibility. The results showed that supplementation of R. typhina and S. alba decreased (P < 0.05) percentage of methane production by 11.2% and 4.3% when added to hay, respectively; while it decreased (P < 0,05) percentage methane production by 15.8% and 6.1% when added to straw, respectively. Additionally, supplementation of these tannin-containing forages significantly increased (P < 0.05) organic matter digestibility of hay and straw. It was concluded that supplementation of tannin-containing forages could strategically be used to decrease methane emission from rumen fermentation in vitro, and at the same time increase the quality of basal diets. Key words: gas production, digestibility, tannin, methane, forage

Ruminal Methane Production on Simple Phenolic Acids Addition in in Vitro Gas Production Method A Jayanegara
Media Peternakan Vol. 32 No. 1 (2009): Media Peternakan
Publisher : Faculty of Animal Science, Bogor Agricultural University

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Methane production from ruminants contributes to total global methane production, which is an important contributor to global warming. In this experiment, six sources of simple phenolic acids (benzoic, cinnamic, phenylacetic, caffeic, p-coumaric and ferulic acids) at two different levels (2 and 5 mM) added to hay diet were evaluated for their potential to reduce enteric methane production using in vitro Hohenheim gas production method. The measured variables were gas production, methane, organic matter digestibility (OMD), and short chain fatty acids (SCFA). The results showed that addition of cinnamic, caffeic, p-coumaric and ferulic acids at 5 mM significantly (P p-coumaric > ferulic > cinnamic. The addition of simple phenols did not significantly decrease OMD. Addition of simple phenols tends to decrease total SCFA production. It was concluded that methane decrease by addition of phenolic acids was relatively small, and the effect of phenolic acids on methane decrease depended on the source and concentration applied. Key words: methane, phenolic acids, in vitro, rumen

Condensed Tannin Effects on Nitrogen Digestion in Ruminants: A Meta-analysis from in Vitro and in Vivo Studies A Jayanegara; E Palupi
Media Peternakan Vol. 33 No. 3 (2010): Media Peternakan
Publisher : Faculty of Animal Science, Bogor Agricultural University

Statistical meta-analysis approach was conducted to quantify the effect of a wide range of dietary condensed tannin (CT) concentration on nitrogen digestion in ruminants. A total of 19 studies from published papers and own previously unpublished studies comprising of 100 treatments were pooled in a database. The database was segregated into two categories based on different methods or systems where the experiments were carried out, i.e. in vitro (6 studies, 65 treatments) and in vivo experiments (13 studies, 35 treatments). Mixed model effects were applied to the data; different studies were treated as random effects whereas dietary CT (continuous predictor variable) was treated as fixed effects. The results showed that in the in vitro studies, organic matter digestibility (OMD) decreased linearly (P=0.002) as CT concentration in feed increased. Likewise, such linear decrease of OMD at increasing CT was observed in the in vivo studies (P < 0.001) as well as crude protein digestibility (CPD, P < 0.001). The variation on in vitro OMD was higher at lower level of CT. Nitrogen retention was not significantly affected by CT level. It was concluded that CT reduced nutrient digestibility in ruminants, but its effect on N retention was unclear from the present study.

Addition of Purified Tannin Sources and Polyethylene Glycol Treatment on Methane Emission and Rumen Fermentation in Vitro Anuraga Jayanegara; H.P.S. Makkar; K. Becker
Media Peternakan Vol. 38 No. 1 (2015): Media Peternakan
Publisher : Faculty of Animal Science, Bogor Agricultural University

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, stoichiometry

Determination of Cell Wall Protein from Selected Feedstuffs and its Relationship with Ruminal Protein Digestibility in Vitro Anuraga Jayanegara; S. P. Dewi; N. Laylli; E. B. Laconi; Nahrowi Nahrowi; M. Ridla
Media Peternakan Vol. 39 No. 2 (2016): Media Peternakan
Publisher : Faculty of Animal Science, Bogor Agricultural University

This study was aimed to analyze neutral detergent insoluble crude protein (NDICP) and acid detergent insoluble crude protein (ADICP) contents of various commonly used forage and concentrate feedstuffs in Indonesia. A number of forages and concentrates, i.e. gliricidia, trichantera, indigofera, calliandra, papaya leaves, cassava leaves, leucaena, rapeseed meal, corn gluten feed, soybean meal, copra meal, palm kernel meal, fish and bone meal and wheat bran were subjected to proximate analysis, cell wall nitrogen determination and in vitro rumen fermentation evaluation. Chemical composition analysis was done in duplicate. The in vitro incubation was conducted in 14 treatments and 3 replicates by following a randomized complete block design. Variables measured after the incubation were total volatile fatty acid (VFA), ammonia, dry matter digestibility (DMD), organic matter digestibility (OMD) and crude protein digestibility (CPD). Results revealed that among the forages, cassava leaf had the highest proportion of NDICP while corn gluten feed was the highest among the concentrates. Different from that of NDICP, the highest proportion of ADICP was obtained in papaya leaf and copra meal for the forages and concentrates, respectively. Higher proportion of NDICP tended to decrease CPD (P<0.1). Although higher ADICP apparently tended to decrease CPD as well, the relationship was insignificant due to the higher variation of the dependent variable. It was concluded that cell wall protein proportion in feed may be used as an indicator to determine the quality of protein and its utilization in the rumen.

Glycerol as an Energy Source for Ruminants: A Meta-Analysis of in Vitro Experiments T. M. Syahniar; M. Ridla; A. A. Samsudin; A. Jayanegara
Media Peternakan Vol. 39 No. 3 (2016): Media Peternakan
Publisher : Faculty of Animal Science, Bogor Agricultural University

Glycerol or glycerin is generally recognized as a safe compound to be used in animal feed, especially for ruminants. A number of in vitro studies related to glycerol supplementation in ruminant ration have been published but to date the results have not been summarized. The objective of this study was, therefore, to evaluate in vitro digestibility, ruminal fermentation characteristics, total gas and methane production through the meta-analysis approach. Meta-analysis was applied to 13 experiments and 42 treatments dealing with glycerol supplementation in ruminants. Data were analyzed by general linear model procedure in which the glycerol levels and the different studies were treated as fixed effects. Results revealed that glycerol supplementation did not affect the in vitro digestibility and total VFA production, but significantly decreased molar proportion of acetate and iso-valerate (P<0.05). In contrast, molar proportion of propionate, butyrate, and valerate significantly increased, and thus the ratio of acetate to propionate declined linearly (P<0.05). Methane production decreased linearly and accompanied with an increase of total gas production with increasing levels of glycerol supplementation (P<0.05). It is concluded that the use of glycerol as an energy substitution in animal feed has no detrimental effects in the rumen and environmentally friendly.

Nutrient Content, Protein Fractionation, and Utilization of Some Beans as Potential Alternatives to Soybean for Ruminant Feeding A. Jayanegara; S. P. Dewi; M. Ridla
Media Peternakan Vol. 39 No. 3 (2016): Media Peternakan
Publisher : Faculty of Animal Science, Bogor Agricultural University

This experiment aimed to determine nutrient content, protein fraction, and in vitro rumen fermentation of some alternative beans in comparison to soybean. Samples used were napier grass, soybean, redbean, groundnut, pigeonpea, cowpea, bambarabean, and mungbean. Samples were determined for their proximate composition, Van Soest’s fiber fraction, and Cornell protein fraction. The samples were subsequently evaluated for their fermentation characteristics and digestibility by using a two-stage in vitro rumen fermentation technique, maintained at 39 oC for 2 × 48 h. The in vitro incubation was performed in three consecutive runs by following a randomized complete block design in which each sample per run was represented by four fermentation tubes. Results revealed that all experimental beans contained high crude protein (CP), i.e. above 200 g/kg dry matter (DM), but only soybean and groundnut had CP contents higher than 300 g/kg DM. Redbean had the lowest crude fiber and acid detergent fiber contents among the beans. Soybean contained high proportion of rapidly degraded CP fraction, but low in slowly degraded and unavailable CP fractions. High proportion of slowly degraded CP fraction was found in redbean and bambarabean. Redbean, pigeonpea, cowpea, and mungbean were better than soybean, groundnut, and bambarabean with regard to DM degradability and DM digestibility values (P<0.05). Concentration of total VFA was the highest in the incubation of redbean. It was concluded that groundnut, redbean, pigeonpea, cowpea, and mungbean have the potency to be used to substitute soybean for ruminant feeding.

Co-Authors A S Tjakradidjaja A Sofyan A. A. Affan A. A. Samsudin A. A. Samsudin A. Anggraeny A. Atabany, A. A. E. Suryani A. Fitri A. Ikhwanti A. Irawan A. Salleh A. Sofyan A. Sofyan A. Sofyan A. Sudarman A. T. Wahyudi A.K. Takyi A.O. Salih Achmadi, S. S. Aditya, S. Adli, D. N. Afandi, Frendy Ahmad Ahmad Sofyan Ahmad Sofyan Ahmad Sofyan Ainissya Fitri Allaily Tarman Almira Firna Fitrianti Ludfi Alya Nur Zahra Amirul, F. M. A. Andrian, Dedek Anjas Asmara Samsudin Annisa Imran Ardani, V. Arief Sabdo Yuwono Asep Sudarman Awistaros Angger Sakti Ayinda, R. S. K. Ayu Septi Anggraeni Aziz Kustiyo Bambang Pramudya Noorachmat, Bambang Pramudya Budi Tangendjaja C. Hidayat Cecep Hidayat Chung, T K D M Sinaga D. A. Astuti D. A. Astuti D. A. Astuti D. Setiawan D.A. Astuti DA Astuti DADIK PANTAYA Daulai, M. S. Dayat Dayat, Dayat Dedy Supriadin Desrial DEWI APRI ASTUTI Dias Indrasti Didid Diapari Diky Ramdani Dwinarto, Bondan E B Laconi E B Laconi E Palupi E Wina E. B. Laconi E. B. Laconi E. B. Laconi E. B. Laconi, E. B. E. Damayanti E. Wina E. Wina E.B. Laconi E.M. Hoffmann Elfawati Endang Warsiki Eneh Maesaroh Erica B. Laconi Erika B. Laconi Eylen Desy Novita Fahmi, Melta Rini FARAH FAHMA Febrina, D. Fhonna, Fenda Alvionita Fitri Ramadhani Gumilang Khairulli H. A. Hassim H. A. Hassim, H. A. H. Herdian H. Julendra H. Matsui H. P S Makkar H.P S Makkar H.P.S. Makkar H.P.S. Makkar Hanny Hafiar Hari Agung Adrianto Harningsih, Intan Sri Hasan Basri Jumin Hasanah, Q. N. Hazen, K. Hendra Herdian Hendra Herdian Heri Ahmad Sukria Heru Nugraha Hindun Syarifah I G Permana I Komang Gede Wiryawan I. G. Permana I. Ikhsan Ikhwan Shodiq Syifaudin ILHAM Iman Hernaman Indah Wijayanti Irawan Sugoro Irawan, A. Ismail Marzuki Ismail Marzuki Isnaini Dafri J. Nomura Juniati, Indira K Becker K. A. Sarwono K. Becker K. Becker K. G. Wiryawan K. Nur, K. Khasrad . Krisnan, Rantan Kusuma, R. I. L. Abdullah L. Abdullah L. Abdullah L. Khotijah Laconi, Erika Budiarti Lendrawati Lendrawati Lendrawati, L. Leo Adhar Effendi Lisman Suryanegara M. Abdelbagi M. Adhyatma M. Kondo M. M. Sholikin M. Makmur M. Zamri-Saad Mafrika Ria Gita Solaya Martin, Rima Shidqiyya Hidayati Mauluddin, Dadan Mazlan, N. A. Melissa Milana Abdillah Subarkah Mira Andriani Mohamad Yamin Muhammad Alam Firmansyah Muhammad Arpah Muhammad Ridla Muis, Nurmaya Rahmawati Mukhtarom, Asrori Mulianda, R. Mutiara Rizky Raisa N. Laylli Nahri Idris Nahrowi Nahrowi Nahrowi Nanang Krisnawan Nanang Krisnawan Neni Sintawardani Nisrina, Aufa Novandri, B. Novia Qomariyah Nugraha Edhi Suyatma Nur Rochmah Kumalasari Nurfitriani, R. A. Nurhayatun Mahmudah Nurrul Suri Aulia Nurul Fauziah Nurul Fitri Sari P. Yuliana Permana, I G Prameswari, Febrina Pratama, Said Mirza Pristian Yuliana Pudji Muljono Qomariah, N. Qomariyah, Novia Qomariyah, Novia R A Nurfitriani R Ridwan R. Hana Nurfitrian Adjie R. K. Rusli R. P. Harahap R. P. Harahap R. Priyanto R. Ridwan R. S. H. Martin R. Solfaine Rahmatillah, Ririn Siti Rakhmad Perkasa Harahap Rantan Krisnan Rardniyom, Chananpat Retnani, Y Retno Budi Lestari Retno Sri Hartati Mulyandari, Retno Sri Hartati Rima Shidqiyya Hidayati Martin Rini Purnawati Risyahadi, S. T. Rita Mutia Rizki Amalia Nurfitriani RM Muhammad Nur Fauzan Rochimawati, Nur Riana Rohmah, Aenyfatchu Rohmatussolihat Rohmatussolihat Roni Ridwan Roni Ridwan Roni Ridwan Rudi Priyanto Rusli Fidriyanto Rusli, N. D. S. P. Dewi S. P. Dewi S. Suharti S. Suharti Saad, M. Z. Sabila, Maureen Sadarman Sadarman , Sadarman Sadarman Sadarman, S. Saeful Ansor Samadi Samadi Samadi Samadi Samsudin, A. A. Samsudin, Anjas Asmara Santi Ratnakomala Savira Astri Adriana Sholikin, M. M. Silitonga, Rhoito Frista Sitti Wajizah Sitti Wajizah Suci Wulandari Sugiyono Sugiyono Suharlina Suharlina Suharti, Sri Sukria, H. A. Sumiati SUMINAR SETIATI ACHMADI Syamsiyah, Dzorifatus T Sutardi T. Ban-Tokuda T. M. Syahniar T. Obitsu T. Sabhan T. Toharmat Tandio, Tjondroargo Tangendjaja, Budi Teuku Mujaddid Syahri Ar-Ridha Thamrin, Elfa Susanti Theo Mahiseta Syahniar Titi Candra Sunarti Toto Haryanto Tri Aminingsih Tri Rachmanto Prihambodo Usman Ali Utomo, D. W. Manalu W. W. Wardani Wardani, W. W. Wasmen Manalu Widjaja, H. Widya Hermana Wijayanti, I. Win Ariga Bungsu Wina, E Wulansih Dwi Astuti Y Retnani Y. Marlida Y. Retnani Y. Retnani Y. Yogianto, Y. Yantina, N. Yantyati Widyastuti Yantyati Widyastuti Yanza, Yulianri Rizki Yeni Widyawati Yeni Widyawati Yesi Chwenta Sari Yuli Retnani Yuliansyah, Andika Boy Zain, M. Zulkarnain Zulkarnain Zulkifli, Sunarto

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