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All Journal Kreano, Jurnal Matematika Kreatif-Inovatif Jurnal Ilmu Ternak Veteriner Animal Production : Indonesian Journal of Animal Production
B Santoso
The State University of Papua
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Environmental Science Mathematics Veterinary

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Methane production and energy partition in sheep fed timothy silage- or hay-based diets Santoso, B; Mwenya, B; Sar, C; Takahashi, J
Indonesian Journal of Animal and Veterinary Sciences Vol 12, No 1 (2007)
Publisher : Indonesian Animal Sciences Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (134.729 KB) | DOI: 10.14334/jitv.v12i1.561

Abstract

Methane is produced as a result of anaerobic fermentation of the soluble and structural carbohydrates by methanogens in the rumen of ruminant animals. Removal of methane from rumen represents a loss of approximately 7.22% of gross energy intake.  Four ruminally fistulated Cheviot wethers were used in a crossover design to determine methane production and energy partition in sheep fed timothy silage- or hay-based diets. The experimental diets consisted of either timothy silage or timothy hay and a commercial concentrate (85:15, on DM basis). Variables measured were nutrients digestibility, energy balance and methane production. Apparent digestibilities of DM, OM, CP, NDF, ADF, cellulose and hemicellulose were significantly higher (P<0.05) on sheep fed silage-based diet than those fed hay-based diet. Sheep fed silage-based diet had greater (P<0.01) urinary energy loss, methane and heat production, but lower (P<0.05) fecal energy loss. Methane production, either expressed as g kg-1 dry matter intake or g day-1 was markedly lower (P<0.05) in hay-based diet as compared to silage-based diet. There was a strong relationship between methane production (g day-1) and NDF digested (g day-1) (R2 = 88.4%, P<0.001). Methane production expressed as g kg-1 NDF digested in silage-based diet was higher (P<0.05) than in hay-based diet (66.44 vs 62.70). These results indicate that methane release by sheep increased with increasing NDF digested. Key Words : Methane, Silage, Hay, Neutral detergent fiber, Sheep
Fermentation quality and nutritive value of rice crop residue based silage ensiled with addition of epiphytic lactic acid bacteria Santoso, B; Hariadi, B.Tj.; ., Alimuddin; Seseray, D.Y.
Indonesian Journal of Animal and Veterinary Sciences Vol 16, No 1 (2011)
Publisher : Indonesian Animal Sciences Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (254.211 KB) | DOI: 10.14334/jitv.v16i1.628

Abstract

Silage is the feedstuff resulted from the preservation of forages through lactic acid fermentation. The aim of this study was to evaluate nutritive value, fermentation characteristics and nutrients digestibility of rice crop residue based silage ensiled with epiphytic lactic acid bacteria (LAB). The mixture of rice crop residue (RC), soybean curd residue (SC) and cassava waste (CW) in a 90: 5: 5 (on dry matter basis) ratio was used as silage material.  Three treatments silage were (A) RC + SC + CW as a control; (B) RC + SC + CW + LAB inoculums from rice crop residue; (C) RC + SC + CW + LAB inoculums from king grass.  Silage materials were packed into plastic silo (1.5 kg capacity) and stored for 30 days. The results showed that crude protein content in B and C silage was higher than that of silage A, but NDF content in silages B and C was lower than that of silage A.  Lactic acid concentration was higher (P < 0.01) in silage C compared to silage B and A, thus pH value of silage C was lower (P < 0.01) than silage B and A. Silage C had the highest Fleigh point than that of other silages. Dry matter and organic matter digestibilities were higher in silages B and C (P < 0.01) than that of control silage. It was concluded that the addition of LAB inoculums from king grass to rice crop residue based silage resulted a better fermentation quality compared to LAB inoculums from rice crop residue. Key Words: Silage, Rice Crop Residue, Lactic Acid, In Vitro
Quality evaluation of signal grass (Brachiaria brizantha) ensiled with forage as tannin source Santoso, B; Hariadi, B. Tj
Indonesian Journal of Animal and Veterinary Sciences Vol 13, No 3 (2008)
Publisher : Indonesian Animal Sciences Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (84.475 KB) | DOI: 10.14334/jitv.v13i3.582

Abstract

This research focused on examining the possibility of using three kinds of plant leaves i.e. Acacia mangium Willd, Persea americana Mill and Psidium guajava as tannin source to signal grass (Brachiaria brizantha) silage. The silages were made from the first cut of signal grass harvested at 50 days. Four treatment silages were TA: grass ensiled without tannin as control, AM: grass ensiled with A. mangium (6 g tannin /kg fresh weight), PA: grass ensiled with P. americana (6 g tannin /kg fresh weight), and PG: grass ensiled with P. guajava (6 g tannin/kg fresh weight). After mixing, the materials were packed into glass bottle silos (225 g capacity), in triplicate, which were ensiled for 30 days. The results showed that dry matter, organic matter and crude protein concentrations in signal grass silage mixed with tannin of A. mangium were higher (P<0.01) compared to other silages. Degradations of dry matter, organic matter and crude protein during ensiling were the lowest in silage with A. mangium tannin additive. This data was supported by good fermentation quality of that silage e.g. low pH value, NH3-N and VFA concentrations, and high lactic acid concentration and Fleigh point as compared to other silages.  It is concluded that addition of tannin from A. mangium leaf at rate of 6 g/kg fresh weight improved fermentation quality and has potential as protein protection agents during the ensilage of signal grass. Key Words: Fermentation, Silage, Tannin, Signal Grass
Nitrogen Metabolim in Sheep Fed Hay-Based Diet Supplemented with Yucca schidigera with or without Nisin Santoso, B
ANIMAL PRODUCTION Vol 7, No 1 (2005): January
Publisher : Universitas Jenderal Soedirman, Faculty of Animal Science, Purwokerto-Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (129.568 KB)

Abstract

Empat ekor domba yang berfistula pada bagian rumen digunakan pada rancangan Bujur sangkar latin 3 x 3. penelitian ini bertujuan untuk mengetahui pengaruh suplementasi Yucca schidigera dengan atau tanpa nisin terhadap penggunaan nitrogen, konsentrasi amonia dalam rumen, konsentrasi nitrogen urea dalam plasma, suplai nitrogen mikroba pada domba yang diberi pakan basal hay rumput timothy dan konsentrat. Tiga perlakuan pakan yaitu pakan basal (kontrol), pakan basal + Yucca schidigera 240 ppm (yucca), pakan basal + Yucca schidigera 240 ppm + nisin 6 mg/kg BW 0.75 (yucca+nisin). Ekskresi nitrogen dalam urin domba yang diberi perlakuan yucca+nisin lebih rendah (P<0.05) dibandingkan perlakuan kontrol. Perlakuan yucca+nisin meningkatkan keseimbangan nitrogen sebesar 8 % dibandingkan kontrol. Konsentrasi amonia  dalam rumen pada perlakuan yucca dan yucca+nisin lebih rendah (P<0.05) daripada perlakuan kontrol, dan konsentrasi tersebut masih berada diatas konsentrasi minimal untuk pertumbuhan mikroba dalam rumen. Konsentrasi nitrogen urea dalam plasma tidak dipengaruhi oleh perlakuan dan bervariasi antara 20.8 – 22.0 mg/dl. Suplai nitrogen mikroba pada perlakuan yucca dan yucca+nisin lebih tinggi (P<0.05) dibandingkan perlakuan kontrol. Berdasarkan hasil penelitian ini dapat disimpulkan bahwa suplementasi yucca atau kombinasi yucca dan nisin dapat menurunkan konsentrasi amonia dalam rumen, sehingga menurunkan ekskresi nitrogen pada urin dimana hal ini berimplikasi positif dalam mengurangi pencemaran nitrogen di lingkungan. (Animal Production 7(1): 34-39 (2005) Kata kunci : Yucca schidigera, Nisin, Penggunaan N, N Mikroba
Chemical Compositions and Nutrient Degradation of Elephant Grass Silage Ensiled with Black Tea Waste Santoso, B; Lekitoo, MN; Umiyati, Umiyati
ANIMAL PRODUCTION Vol 9, No 3 (2007): September
Publisher : Universitas Jenderal Soedirman, Faculty of Animal Science, Purwokerto-Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (100.959 KB)

Abstract

This study evaluated the chemical compositions and nutrient degradation during ensiling of elephant grass (Pennisetum purpureum) silage with black tea waste (BTW) addition.  Four silage treatments were elephant grass (S0); elephant grass + 100 g BTW/ kg fresh matter (S1); elephant grass + 200 g BTW/kg fresh matter (S2); elephant grass + 300 g BTW/kg fresh matter.  About 220 g of silage material were ensiled for 30 days at room temperature (approximately 28°C).  Three replicates were prepared for each treatment.  Results showed that dry matter, organic matter and crude protein contents of silages increased linearly (P<0.01) with increasing black tea waste.  There were linear decreases in dry matter and crude protein degradations (P<0.01) and organic matter degradation (P<0.05) during ensiling with increased black tea waste addition.  Dry matter degradation values varied from 15.03 to 30.71% and were higher than degradation value of ideal silage.  It was concluded that black tea waste has potential as a silage additive to improve nutritive value and fermentation quality of elephant grass silage.  (Animal Production 9(2): 160-165 (2007)  Key Words: Elephant grass, black tea waste, silage additive, degradation
Pengaruh Pendekatan Pemodelan Matematika Terhadap Kemampuan Koneksi Matematis Siswa Kelas VIII MTs Aisyiyah Palembang Sari, Desi Permata; Darmawijoyo, Darmawijoyo; Santoso, B
Kreano, Jurnal Matematika Kreatif-Inovatif Vol 9, No 1 (2018): Kreano, Jurnal Matematika Kreatif-Inovatif 9(1)
Publisher : Jurusan Matematika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Sema

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/kreano.v9i1.12330

Abstract

Penelitian ini bertujuan untuk mengetahui apakah terdapat pengaruh pendekatan pemodelan matematika terhadap kemampuan koneksi matematis. Penelitian ini dilakukan di kelas VIII.A dan VIII.B MTs Aisyiyah Palembang. Metode penelitian yang digunakan adalah kuasi eksperimen dengan desain Nonequivalent Control Group Design dan teknik pengambilan sampel dengan random intact group. Instrumen yang digunakan adalah instrumen tes berupa soal kemampuan koneksi matematis. Hasil penelitian menunjukkan bahwa terdapat perbedaan peningkatan yang signifikan antara kemampuan koneksi matematis siswa yang belajar menggunakan pembelajaran pendekatan pemodelan matematika dan siswa yang belajar menggunakan pembelajaran konvensional. Hal ini terlihat dari hasil analisis uji-t menggunakan SPSS yang telah dilakukan, diperoleh t = 3,605 dengan tingkat  signifikansi (Sig-2-tailed) adalah 0,001. Dari hasil  perhitungan tersebut, signifikansi (Sig-2-tailed) yang diperoleh kurang dari taraf signifikansi = 0,05 sehingga berdasarkan kriteria pengujian maka  ditolak. Dari analisis data yang dilakukan dapat disimpulkan bahwa pembelajaran dengan pendekatan pemodelan matematika berpengaruh terhadap kemampuan koneksi matematis siswa.This research aimed to determine whether there is influence of mathematical modeling approach to mathematical connection ability. This research was conducted in  class VIII.A and VIII.B MTs Aisyiyah Palembang. The method used a quasi-experimental design with Nonequivalent control group design and random sampling technique with intact group. The instrument is used a test of mathematical connection ability. The results showed there is significant differences in improvement between mathematical connectionability of students who learn using mathematical modeling approach learning and student learning using conventional learning. This evident from the results of test analysis t test SPSS, obtained t = 3,605 with a significance level (Sig-2-tailed) was 0,001. The results of these calculations, the significance (Sig-2-tailed) were also less than the significance level of = 0.05 so that based on testing criteria then  was rejected. The conclusion of this research is that learning with mathematical modeling approaches affect the students' mathematical connectionability.
Co-Authors B Mwenya B. Tj Hariadi B.Tj. Hariadi C Sar Daniel Y. Seseray Darmawijoyo, Darmawijoyo Desi Permata Sari J Takahashi Lekitoo, Marlyn N Umiyati Umiyati, Umiyati